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Membrane Switch

Membrane Switch

A membrane switch or more precisely a standard membrane switch assembly is comprised of several flexible layers that make up a complete switch package. This assembly can have as few as one active area (key or button) to several dozen active areas. A custom membrane panel switch is an interface between man and machine, which enables an operator to communicate with equipment, instrumentation, or machinery. Subsequently, this allows the operator to communicate with the device, issuing commands and/or performing other operations. The operator presses the membrane control panel when he or she wants to control the device.

 Why choose our membrane switch?

Construction of Membrane Switch

Graphic Overlay – PET/PC is usually the overlay material of choice due to its fantastic chemical resistance and flex property. Komkey offers membrane switch customized design services such as digital printing, screen-printing, or apply both methods to ensure you get the right colors, textures and finish your membrane switch design requirements.

 Adhesive Overlay – This adhesive layer sticks the membrane switch overlay to the top circuit layer, and is usually an acrylic adhesive. The material is the same as the fourth layer. Only the thickness is maybe different according to the actual situation.

 Top Circuit Layer – The material of this layer is specific. It is a 0.1mm thickness thermostable PET film printed with conductive silver ink and also dielectric oil, which used for fastening metal domes.

 Circuit Spacer – This layer separates the top circuit from the bottom circuit so that the touch membrane remains normally break until the membrane switch keypad is pressed. The circuit spacer is a polyester spacer with adhesive on both sides.

 Lower Circuit Layer – This layer is a 0.1mm-0.25mm thickness thermostable PET film printed with conductive silver ink and also dielectric oil. This layer terminates as a flexible tail that serves as an interconnector to controller PCBs or other IC.

 Rear Adhesive – This adhesive layer bonds the entire membrane switch to the product surface, housing, or to a rigid support panel. Komkey, one of the membrane switch keypad suppliers, can use the proper adhesive type and thickness to bond your membrane switch to your equipment.

 Membrane Switch Specification

Mechanical Properties:

Life Expectancy

Flat type ≥ 5 million times,

Tactile type ≥ 1 million times

Operation Force

Flat Type 57-284g ,Tactile Type 170-397g

Dome Rebound Time

≤6ms

Tail Bending Performance

≤180°

Switch Stroke

Flat 0.1~0.5mm,Tactile 0.6~1.5mm

Vibration

20G's max.

Thickness

0.7~1.5 mm

 Electrical Properties:

Rated Voltage

≤50V DC

Rated Current

≤ 100mA

Operating Power

≤1W

Insulation Resistance

≥100MΩ (250V DC)

Loop Resistance

10Ω~2kΩ

(Depending on the design)

Contact Resistance

0.5 ~ 5Ω

(Depending on wire length and the materials)

Wire Lead Resistance

<1Ω/cm

Base Material Voltage Withstand

1500V DC

 Environmental Properties:

Operation Temperature

-40°C to +80°C (-40°to 176°F)

Storage Temperature

-40°C to +85°C (-40°to 185°F)

Atmospheric Pressure

86 ~ 106 kPa

Humidity

+40°C, 90%~95%RH for 240 Hours

 Why Choose Our Membrane Switch?

Our Membrane Switch Pad Advantages

 Beautiful appearance, Variety color printing.

 Small size, light in weight, good tactility, Long life span.

 moisture-proof, dustproof, waterproof, anti-corrosion, and erosion of harmful gases proof.

 Easy to operate, intuitive, safe and reliable

 Cost-effective, convenient installation

 Komkey is one of the reliable membrane keyboard suppliers offering custom membrane keypad design service  

 Customized specification is available, the Smaller volume can be accepted.

 Customized logo/Brand/Contact way can be printed in the overlay for advertisement.

https://www.kom-key.com/membrane-switch/

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How to Repair the Malfunctioning Microwave Oven Membrane Switch?

Two common faults in microwave ovens are mostly related to membrane switches or FPC printed circuits.

 (1) Most of the key switches in the keyboard fail. This failure is usually caused by the leakage of the membrane switch or FPC. The electricity leakage is caused by long-term moisture or moisture erosion of the microwave computer board and it is sometimes difficult to judge whether there is electricity leakage from the appearance of the circuit board. Therefore, if necessary, it will be effective in most times that you directly use absolute alcohol to wipe or clean the membrane switch, FPC and computer board. This kind of failure may also be caused by several disconnections in the FPC printed circuit at the same time, but these disconnections are basically caused by improper maintenance, so they are not common. When checking, you can quickly check the fault by just seeing with the naked eyes or measuring with a multimeter. Then as long as you re-solder the broken wire, the fault can be eliminated.

 (2) Individual key switches in the keyboard are malfunctioning. The main reason for this failure is that the FPC circuit corresponding to the failed switch is broken or the membrane switch is in poor contact. You can find the membrane switch corresponding to the malfunctioning switch and repair it.

 The failure of the microwave oven buttons is probably due to the aging of the membrane switch panel. If it is more than four years, it is recommended that you replace the membrane switch panel, and it is OK as long as you replace it with one of the same model and specification. This replacement can be done by removing the control panel by people as long as they have basic operational ability. If you can't buy a membrane switch panel, you can also change it to a micro switch. The circuit should be wired according to the old membrane switch board, and the panel can be done by drilling holes, installing micro switches, fixing and wiring with silica gel.

 After the microwave oven is used for a long time, the membrane switch may be aging. In this case, the switch that are used with longer time is really not useful, so there is no need to spend money on repairs, and you can replace the membrane switch panel. If the membrane switch fails when used for short time, then it is necessary to see if the machine is affected in any way, such as whether it is damp or corroded by water. These problems are required to be studied carefully.

 https://www.kom-key.com/how-to-repair-the-malfunctioning-microwave-oven-membrane-switch.html

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How to Fix the Membrane Switch If Broken?

Anything in the use of maintenance and repair needs, then, is how membrane switch repair it?

 1. Unpack the film panel again to open the top layer of the film according to health. Each of the connecting positions with a multimeter isolated by the Kin switching point of the circuit board to ensure the connection point of the switch after the modification and corresponding to the original.

 2, at each switching point of the lower layer film with good positioning, tapered metallic cone bit dish plate holes. The size of the perforations than the logo switch actual column dimensions are slightly larger. Logo switch according to ensure the health column moves up and down unobstructed bore appropriate. If the hole is too small will switch ring-shaped resilient action switch malfunction.

 3, Gold and Iron tablets of each aperture plate. The logo printed play switch fixed plate. Each switch and press the corresponding connection point Na connect the cable. The real space position while the third metal plate between the display panel 2 and the corresponding left the edge of the printing plate drama. A fixed switching plate. Because the new switch plate is a metal plate in between the display panel and the LEDs in the printing plate must also be perforated with holes corresponding to the display panel position indicator 2 to ensure that the light-emitting tube passes through the display panel from PCB a display panel can see the signal. At the same time have a certain distance between the two circuit boards and to prevent short circuits.

 As long as the replacement of the same type and specifications of the membrane switch panels can (scouring the Internet, as long as there are not very old models), as long as the replacement control plates removed, as long as the basic ability will do (if not the ability it is no chance). If the buy membrane switch panel, may be changed to a micro switch, to a wiring circuit according to the old membrane switch panel, the panel by drilling, mounting the microswitch, silica gel stationary and the wiring, the wiring on it.

 These are some of the ways the maintenance of membrane switches, membrane switch need to order you can contact us.

 https://www.kom-key.com/how-to-fix-the-membrane-switch-if-broken.html

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Graphic Overlay

What is Graphic overlay ?

Graphic overlay is an interface layer which is made of polycarbonate or polyester with an adhesive backing. It can be applied to many industries including, Residential and commercial appliances

Machinery control panels Medical equipment

HVAC equipment Gas station pumps

Automotive dashboards

 A functional graphic overlay is designed for use with rubber keypads, membrane switches or as a touch screen panel interface for control panels. In these applications, the printed graphics and text are used to providing operational instructions or safety warnings and label overlay buttons and controls.

 However, with an aesthetic purpose, decorative membrane switches graphic overlays and panel overlays are printed with custom graphics, company logos or product information. They act as an intermediary between the user and the machine through functional descriptions, without conductive traces or circuitry.

 The membrane switch overlay or custom control panel overlay provides a variety of embossed keys, matte or glossy finishes, and a protective coated overlay to reduce the likelihood of fading. It also includes different material thicknesses from 0.125mm to 1mm to meet customers' specific applications.

 Materials for Graphic Overlay

POLYCARBONATES

GE(Matte materials) 8B35-0.125mm, 8B35-0.254mm, 8B35-0.375mm,8B35-0.5mm

 GE (Golssy materilas) 8010-0.125mm, 8010-0.254mm, 8010-0.375mm,  8010-0.5mm

 POLYESTERS

Autotex (Textured) Like F150, F200

 Autotex UV/XE Like, V150, V200, XE150, XE200

 AutoFlex EBG/A (Glossy and Anti-glare), Like EBG130, EBG180, EBA130, EBA180.

 ADHESIVES

200 Series (467MP & 468MP) - 3M

 300LSE Series (For Low Surface Energy Applications) - 3M

 DT8016, DT8126, DT8176 - (Nikto)

 Graphic Overlays for Any Industry

Custom graphic smart overlays can improve the overall appearance and prevent moisture, dust, and debris from penetrating the electrical components such as switches or touch screens. Some of the common uses include:

 Residential and commercial appliances

 Machinery control panels

 Medical equipment

 HVAC equipment

 Gas station pumps

 Automotive dashboards

 Custom Graphic Overlay Capabilities

Specializing in graphic design overlays as static components for membrane switches and rubber keypads and touch panel, we will help you design a customized graphic overlay which meets both functional and aesthetic needs. We can offer the following services:

 Digital overlay printing

 Prototyping

 In-house embossing

 Custom control panel overlay printing

 Laser & die-cutting

 Custom graphic overlays can be made in sizes from to 30" to 40". Additionally, in order to improve visibility in low light applications, backlighting can also be added to the overlay panels. We also offer special ultraviolet selective textures and ultraviolet hard coat treatments which can protect lens areas from chemicals and scratching.

 How to Design the Graphic Overlay?

Sample: Provide drawings of graphic overlay prototypes that all dimensions and physical characteristics including colors or actual samples for copy are clearly shown.

 Colors: Identify the colors which you want your switch overlays to have by Pantone (PMS) RAL color number or a color sample. It is important to supply the exact standard for which our color match will be evaluated.

 Borders and Outlines: Avoid circles within circles, or outlines which are close to cutouts or outer edges because any misregistration will be visually accentuated.

 File Format: It's best to receive design files from the native software packages. (ie Adobe Illustrator, Corel Draw or PDF files)

 Background: Light text and dark backgrounds will show less wear and dirt and greater clarity. Try making the control panel overlay or the membrane overlay drawings clear.

 Text: Block lettering provides the most legible copy. Try to use common fonts. Positive letter strokes should be a minimum of .008'' and .012''for negative letter stroke.

 https://www.kom-key.com/graphic-overlay/

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Film Switch Characteristics And Applications

Characteristics and applications of membrane switch

As we all know, the switch plays a role of transmitting instruction information in electronic machine products. There are many kinds of switches, and their development is constantly updated with the progress of electronic products. In the 1950s, key switch, toggle switch, change-over switch of discrete components were dominant; in the 1960s, combination switch represented by piano key switch appeared and completed simple function conversion; with the expansion of application field and the increase of whole machine function, conductive rubber keyboard switch appeared in the 1970s, while membrane switch is a new type of electronic device researched and developed in the late 1970s and early 1980s, which conforms to the needs of miniaturization, digitalization, intellectualization and multi-functional development of electronic machine products.

 The membrane switch is a kind of contact switch, which is made by contact circuit printed by conductive paste on flexible polycarbonate or polyester membrane.

 The membrane switch is a planar type electronic machine control system with multi-layer combination, sealed structure integrating key switch, panel function mark, transparent reading display window, indicator light window hole and circuit.

 The membrane switch has the following characteristics:

(1) durability

 The service times of membrane switch can reach more than one million times of creeping generally. The reason why it has such a long service life is that the action of the switch is only realized by the vertical movement of the elastic membrane. Although the elastic membrane undergoes one million times of creeping, the creeping range is only 0.1 ~ 0.3mm (i.e. switch stroke). Furthermore, the material selection is rational, so it is far from reaching the limit of the membrane so that the membrane material can withstand more than one million times of creeping without deformation. On the other hand, the contact of the switch is vertical, and the wear extent is very small; the screen printed contact can form enough thickness, and a layer of conductive carbon is printed on the silver paste contact to achieve the purpose of high wear resistance and self lubrication, so the service life of the membrane switch is more than ten times longer than that of the mechanical contact switch.

 (2) good sealing performance

 As the membrane switch is an integral sealed structure, the contact of the switch is not subject to the erosion of harmful gases and is not easy to be oxidized; it has the characteristics of waterproof and dustproof, so it is more suitable for various harsh environments.

 (3) small volume, light weight and reliable structure

 The membrane switch can be arranged and combined into a membrane keyboard in the design. Its setting density is large, and it is a sealed sheet structure composed of multi-layer membranes. The connecting wires and leading-out between all switches are completed by screen printing at one time, with a total thickness of 1 ~ 3mm, which reduces the volume and the weight and improves the reliability.

 (4) rich in color and beautiful appearance

 Membrane switch can be personalized in the design of color pattern according to the user's design concept, and the comprehensive characteristics of material beauty, decoration beauty and process beauty can be reflected in the decoration effect.

 (5) reduce the matching cost of mechanical and electrical products

 The traditional mechanical switch needs to be welded when it is installed, even with the fixed bracket. The membrane switch is a paste type one, and as long as the back adhesive paper is removed, it can be firmly pasted on the surface of the whole machine with the adhesive side. Its lead outlet is inserted into the socket of the rear circuit of the whole machine, and the circuit can be connected in an instant. The membrane switch not only save labor and material but also reduce the matching cost of the whole machine.

 Application of membrane switch

 The membrane switch is a kind of non-self-locking switch. It is applicable to the working occasions with switch power less than 1W, maximum working voltage of 42V (DC) or 25V (DC) and maximum working current less than 100 mA. It can be widely used in all microcomputers, CNC, intelligent instruments, meters and electronic circuits with discrimination and memory functions and other fields.

 https://www.kom-key.com/film-switch-characteristics-and-applications.html

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Car Stereo Wiring Harness

The car audio wiring harness is very important for the car audio. A good harness is to ensure safety first, followed by anti-interference and attenuation. Car audio wiring harness can be divided into two categories: signal lines and power lines.

 1. Signal harness

It is required to have good anti-interference, reduce signal attenuation, good contact, and prevent oxidation at the joint. Some signal wires are usually made of special alloy materials, snap ring plugs, and gold-plated on the plug surface to prevent oxidation.

 1) Wrap the joint of audio signal wire with insulating tape to ensure insulation. When the joint contacts with the vehicle body, noise may be generated.

 2) Keep the audio signal line as short as possible. The longer the audio signal line is, the easier it is to be interfered by the noise signal. Note: if the length of the audio signal line cannot be shortened, the extra long part should be folded up instead of rolled up.

 3) The wiring of audio signal line shall be at least 20cm away from the power line of driving computer unit and power amplifier. If the wiring is too close, the audio signal line will pick up induced noise. Separate the audio signal cable and power cable on both sides of the driver's seat and the passenger's seat. Note that when wiring near the power line and microcomputer unit, the audio signal line must be more than 20cm away from them. If the audio signal line and power line need to cross each other, it is recommended to intersect at 90°.

 2. Power harness

The car audio harness requires stable current and voltage, low impedance and low current attenuation. The selection of the power supply wire depends on the power. The larger the power is, the larger the current is, the coarser the wire needs to be selected. Generally, pure metal wires with high purity are used as materials, and enthusiasts may use pure silver wires. In addition to the good insulation properties of the insulating material surrounding the power cord, it must be able to withstand high temperatures.

 https://www.kom-key.com/car-stereo-wiring-harness.html

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Application of Membrane Switch Keypad in Military Electronic Product Design

With the emergence of the membrane touch switch, it has become more and more widely used in military products, which has caused a fundamental change in the design of military electronic products. The membrane switch is also called a touch panel, a membrane button, a membrane flexible switch, and the like. It is a monolithic structure made up of flat multi-layer films. It is a new mechatronics product that seals masks, buttons, and substrates together. Its lifetime is generally several dozen times longer than other mechanical switching devices, or even hundreds of times, and its lifetime can reach millions of times.

 Komkey's Military application

 Since the 1990s, under the premise of ensuring reliable quality, aesthetics, practicality, and economy have been mentioned as important positions, becoming an important additional function of military products. The image of military products is "stupid, big and rough" was completely changed. In this situation, the membrane switch is widely used in military products for its unique reliability, aesthetics, practicability, convenience, and economy, which has revolutionized the structural design of military products and greatly improved the appearance of military products. However, due to its unique peculiarity and importance, military products must make necessary changes in design and construction when applied to military products. Instead of adopting general-purpose design methods for civilian products, The harsh use environment and routine test environment of military products.

 The military product is a special product. It has strict requirements on the membrane switch button and requires reliable quality, strong stereoscopic effect, and good hand feeling. There are many types of membrane switch buttons, such as flat keys, stereo keys, light hand keys, heavy hand keys, and special keys. However, as a military product, a stereo heavy hand key is preferred, which is beautiful in appearance, convenient in operation, and strong in hand.

 As a military product, the requirements for electromagnetic compatibility are quite strict. Electromagnetic compatibility is an important technical indicator of military products, which will directly affect the technical performance of the whole machine. Membrane switches used in military applications must comply with electromagnetic compatibility requirements.

 Like electromagnetic compatibility, high and low-temperature routine tests are also an important technical indicator for military products.

https://www.kom-key.com/application-of-in-military-electronic-product.html

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Transparent Red Window for PCB Membrane Overlay

https://www.kom-key.com/products/transparent-red-window-for-pcb-membrane-overlay.html

Product characteristics

Materials: F150

 Application: Used for scales

 Adhesive:3M467

 Transparent Red window in the graphic overlay

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Touch Panel

https://www.kom-key.com/products/touch-panel.html

What kinds of Touch Panels Are You Looking for?

A touch panel is one of the kinds of computer display screens, which can also be called an input device. Due to the sensitivity to the pressure of the touch panel sensor, users interact with the computer by touching the objects on the screen.

 Three types of touch screens are listed below:

 Resistive Touch Screen:

 A resistive touch screen panel is a sensor that is basically a film-plus-glass structure that converts the physical position of a touchpoint (X, Y) in a rectangular area into a voltage representing an X coordinate and a Y coordinate. Resistive touch screen panels are generally more affordable but provide only 75% clarity and the layer may be damaged by sharp objects. Resistive touch screens are immune to external elements such as dust or water.

 Surface Wave Touch Screen:

 Surface wave technology integrates acoustics, electronics, and semiconductors into new technology. They have the advantages of small size, flexible design, mature technology, good consistency, and reliability.  Surface wave technology uses ultrasonic waves that pass over the touch screen panel. Surface wave touch screen panels are the most advanced one of the three types of screen touch panels, but they can be damaged by external elements.

 Capacitive Touch Screen:

 The resistive touch screen panel is constructed by placing a transparent thin-film conductor layer on the touch panel glass and adding a protective glass to the conductor layer. This double glass design completely protects the conductor layer and the inductor. With the rise of smartphones and tablets, the capacitive touch screen panel market has been developing rapidly.

 Touch Points of the Touch Panel

Single, or Dual/Multi-Touch?

Single-touch interaction is capable of, at a lower price, realizing all the applications' goals. Gesture interaction, including, flick, slide and knead, requires dual/multiple support. Select the alternative to continue.

 Single Touch Point Only

Aiming at supporting single-touch input, resistance touch screen is designed. Various types of materials are available because there is no limitation of the materials which are used for input. Besides, resistance touch screens have the advantages of mature technology, stability, high-cost competitiveness, and excellent detection accuracy.

 The advantage of single-touch is that the device design space is optimized, especially for small devices, because it can "install" screens and buttons in the same area at the same time; second, because the buttons can be bound to any application in the operating system, So the "buttons" used by the device can reach an unlimited number.

 Multiple Touch Point Support

The user's two hands have ten fingers, and when the users interact with each other, more fingers appear on the screen. This is the origin of the multi-touch concept of recognizing the position of a finger, which enables manipulation of more than two fingers. Projected capacitive touch screens support single or multiple touchpoints. It allows for the interaction of gestures. One point to mention is that no part of the resistive multi touch screen physically will move at detection, and it makes the touch experience smoother and lighter (just like smart-phone).

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Tactile Membrane Keyboard with Aluminium Plate Type

https://www.kom-key.com/products/tactile-membrane-keyboard-with-aluminium-plate-typ.html

Product characteristics

1. Aluminum plate surface dealing: Black Anodized/Clear Anodize/Polished/Deactivation/High-speed sandblasting/Superficial wiredrawing

 2. Aluminium thickness: 0.5mm, 1mm,1,5mm 1.8mm,2mm,

 3. Component: Screws, Nuts

 4. Glue: 3M adhesive at the back

 5. Cut out holes by customized

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Rim Embossing for Custom Smart Switch Overlay

https://www.kom-key.com/products/rim-embossing-for-custom-smart-switch-overlay.html

 Product characteristics

Materials: UV150

 Application: Outdoor application, UV resistant

 Adhesive:3M467

 Rim embossing for keys

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PCB with Metal Dome

https://www.kom-key.com/products/pcb-with-metal-dome.html

What is PCB with Metal Dome

Metal shrapnel (also known as pot or piece, metal dome, snap dome), made of ultra-thin (0.05mm-0.1mm thickness) and ultra-thick (usually high hardness) stainless steel 301 or 304 material. Metal dome is an important part of the dome switch PCB.

 They are momentary switch contacts that become normally-open tactile metal dome switches when used in conjunction with a printed circuit board (PCB).

 PCB is also known as printed circuit boards because it is made by electronic printing.  A printed circuit board is a substrate for assembling electronic components and is a printed board on which a point-to-point connection and a printed component are formed on a general-purpose substrate in a predetermined metal core printed circuit board design.

 Metal domes can be divided into several groups: round metal dome, triangle metal dome,  rectangular metal dome, four-leg metal dome(cross shape), square shape metal dome and other special shapes. PCB membrane switches are widely applicable. It can be applied in areas including mobile phones, diagnostic equipment, industrial controls, test equipment, and measurement equipment, etc.

 Advantages of Our PCB with Metal Dome

Making smaller and thinner packages possible

 Dome switch PCB with high product reliability

 Low-profile and lightweight design

 PCB membrane switch with consistent tactile response

 Actuation forces are available to meet any needs of applications

 Metal dome membrane switch which is able to be used even in the rough environment

 Applications Of PCB with Metal Dome

CD player

 Focusing on three-dimensional assembly characteristics of flexible circuit boards and thin thickness.

 The mobile phone

 Easy connection of the battery, microphone, and buttons and into one. Focusing on the flexible metal core printed circuit board lightweight and thin thickness. Being able to effectively save the volume of products.

 Computer and LCD screen

 Using the one-line configuration of thin thickness and flexible circuit boards.

 Disk drives

 No matter it is or diskette or the hard disk, it is dependent on FPC high softness and thickness of the 0.1 mm slim.

 The latest applications

 Hard disk drives (HDDs, hard disk drive) of the suspended circuit and the components of xe packaging board, etc.

 What we can do in PCB products

 We are one of the trustworthy metal dome switch manufacturers. However, PCB fabrication assembly is also a very important component for metal dome membrane switch. To meet customers' requests and demands, we have a professional team to help the customers change the PCB circuit into a Polyester printing circuit. There are some designs with space limit which need to be changed from the Polyester circuit or flexible circuit into Double-side or Multi-layer's PCB. That's also one of the services we can provide. In addition, we can provide some PCBA services, such as solder the components and assembling metal dome and different layers' (Overlay, Spacer) in PCB.

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lluminated LED Membrane Switch with LED Insert

https://www.kom-key.com/products/illuminated-led-membrane-switch-with-led-insert.html

Product characteristics

1. LED colors: Red, Green, Yellow, White, Blue, Orange, Duo-colors LEDs

 2. LED size：0603，0805，1206，020

 3. LED brand： Kingbright, Every light

 4. Little heat, low-cost, used for the outdoor environment

 Can be bonded into Polyester or FPC

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FPC Custom Membrane Switch Keyboard

https://www.kom-key.com/products/fpc-custom-membrane-switch-keyboard.html

Product characteristics

1. Lower resistance, it's about 1ohm-50ohm

 2. More flexible, standard for bending and high temperature

 3. Pitch: 0.3mm, 0.5mm, 1mm, 1.25mm, 2mm,2.54mm

 1. SMD: LED, Resistor, IC, connector, capacitors

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Custom Waterproof Membrane Switch with LGF Construction

https://www.kom-key.com/products/custom-waterproof-membrane-switch-with-lgf-constru.html

Product characteristics

LGF is a thinner construction, without limited to devices thickness.

 LGF has a limited impact on the tactile feel of buttons.

 LGF can provide even backlight across larger and small areas.

 Reliability and long lifetime, Low-Cost

 Efficient power consumption and operating on lower voltage

 Colors: White, Blue, Red, Green is a common choice.

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Cable Harness

https://www.kom-key.com/products/cable-harness.html

What is Cable Harness

A cable and wire harness also referred to as a wire harness, wiring assembly, cable assembly or wiring loom, is an assembly of electrical cables or wires which transmit signals or electrical power. The cables are bonded together with a durable material such as vinyl, rubber, electrical tape, conduit, a weave of extruded string, or a combination thereof. Commonly used in automobiles, car, and construction machinery, cable harnesses has several advantages over loose wires and cables.

 Application and environment are the two major factors that determine the types of the wire harness. Based on these two factors, there are 3 types of harness cable assembly.

 Open Bundle:

 The cable and harness assembly is attached to the connectors and lugs and are coupled in bundles with various breakouts using plastic tie wraps or waxed lacing twine.

 Closed Bundle:

 Wires are bundled with a covering, such as pulled-on braided tubing, braided-on Nomex or nylon, or in some cases, metal braid.

 Waterproof Harnesses:

 The junctions between the legs and backshells of the connectors are molded with a material such as urethane or rubber compounds.

 Specifications of the Cable Harness

Material

Wires can be UL/CSA,CE, VDE,SAA,CB etc

Size Range

Thousands of different connectors available

Color

Black or OEM color

Voltage rating:

30V AC/DC

Withstanding voltage:

200V AC/minute

Temperature range:

-25 -85°C

Insulation resistance:

≥100MΩ

Design ability    

We can supply sample, OEM&ODM is welcome (Design, Engineering, Photographing, Sample, Production)

Simple Crimped Cable Assembly:

0.8mm pitch, 1.0mm pitch, 1.25mm pitch, etc.

Cable length:

customized

Sample

Sample can be provided for evaluating

MOQ

Small order can be accepted

Delivery Time

Enough stock and strong production capacity ensure timely delivery

Packaging

100/200/300/500/1000PCS per bag with label, export standard carton

Application

Industrial and Car audio harness

 Components of Cable Harness

Wire

 The role of the wire is to carry current to convey signals and provide power. It itself contains internal copper wires and external insulating materials. Commonly used specifications have a nominal cross-sectional area of 0.3, 0.5, 0.85, 1.25, 0.3, 0.5, 0.8, etc. Wires, each of which has a current value that allows the load, and reasonable use of electrical equipment for different powers, is the basis for a qualified harness. With the increase of the functions of automobiles, the widespread use of electronic control technology, more and more electrical components, more and more wires, the thicker and heavier the wiring loom harness assembly becomes. In the future, the use of wires will be reduced, and modern cars have introduced CAN bus configurations using multiplex systems. Compared with the traditional point-to-point configuration of the wiring harness, the CAN bus greatly reduces the number of wires and connectors, making the cable and wire harness lighter and not limited.

 Connector and Terminal

 After the terminal and the electric wire assembly are crimped according to the standard, they are locked in the slot of the connector, and the male and female connectors are butted to meet the loop between the harness and the harness to the terminal. If it is arranged in the high humidity environment of the engine compartment, according to National regulations require that waterproof plugs be added.

 Exterior Parts and Other Components

 The exterior parts include a bellows, a polyethylene tube, a polyethylene cloth, a sheath, a sponge, a tape, a wire fastening harness bracket, etc., in order to place the wire to wear and break. Meet the temperature and humidity requirements of different positions of the body. Generally, corrugated pipe, polyethylene pipe, polyethylene cloth, hard pipe, and sheath are used to prevent the wire from being worn and broken. The wire is wrapped with thin-walled and thick-walled tape, and the wire harness is fixed at a suitable position in the vehicle body by using clips of different shapes. The purpose of the rubber ring is to prevent the wire cable harness from being scratched when it passes through the gold hole

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Tactile Membrane Switch with Metal Dome

Product characteristics

1. Metal dome Shape: Four-Leg Metal domes, Triangle metal domes, Round metal domes

 2. Metal dome force: 180g, 220g, 240g, 350g, 400g,

 3. Metal dome with good tactile

 4. Metal dome materials: Stainless, Nickel, Golden

http://www.kom-key.com/products/tactile-membrane-switch-with-metal-dome.html