#Silicon-avalanche diodes (SADs)

[eric2bwodr]

https://www.futureelectronics.com/p/electromechanical--circuit-protection--tvs-diodes/sp4045-04atg-littelfuse-9097778

Silicon-avalanche diodes (SADs), Bidirectional TVS, Low Capacitance TVS

TVS DIODE 3.3V 7V 10MSOP

[dragongirlsnout]

*wiggles my ass at you* so yeah, metal-oxide varistors pretty much outperform silicone avalanche diodes in every important surge protection characteristic. SADs technically have a faster response time, on the order of single-digit picoseconds, but that's a misleading statistic because transient voltage surges typically take around 8-20 milliseconds to spike so that increased speed isn't really necessary! SADs also crowbar, or interrupt the load, whereas MOVs maintain a constant supply *seductively sliding my paws down my hips* oh yeah, why spec TVSS units for 250kAIC when most transient surge events peak at below 10kA? well, it actually increases the service life of the device! most well-built units can survive about 25 years of regular surges *squishing my boobs together* yeah, 400V sounds like a lot of let-through voltage, but that's coming from a suppressed 20kV C3 impulse! it's also for the primary and branch units individually, using them in series can reduce it to as little to a 60-70V surge for a 208V line-line circuit

[afrenterprises-blog]

Protecting Aircraft Electronics: The Importance of Surge Suppressors

In the world of aviation electronics, it's crucial to shield sensitive systems from sudden voltage surges. Surge suppressors, also known as transient voltage suppressors (TVS), play a vital role in ensuring that aircraft electronics remain safe and reliable. Whether you're a pilot, an aviation engineer, or simply curious about how planes stay safe in the skies, understanding surge suppressors is essential.

What Are Surge Suppressors in Aviation?

Surge suppressors are specialized devices designed to protect aircraft electronics from sudden increases in voltage. These spikes can happen due to lightning strikes, electromagnetic interference, or even normal electrical system operations. Without protection, these spikes could damage avionics systems and compromise flight safety.

How Do Surge Suppressors Work in Aviation?

In aviation, surge suppressors use advanced components like metal oxide varistors (MOVs), gas discharge tubes (GDTs), or silicon avalanche diodes (SADs) to react quickly to voltage spikes and redirect excess energy away from sensitive avionics:

Metal Oxide Varistors (MOVs): These components are effective because they can change their resistance rapidly when there's a surge. This helps to protect critical avionics equipment by diverting excess voltage away from sensitive parts.

Gas Discharge Tubes (GDTs): GDTs are strong devices that activate by creating a low-resistance path to ground during a surge. They're often used in aviation because they're reliable and can handle high-energy events.

Silicon Avalanche Diodes (SADs): SADs are semiconductor devices that can quickly bring voltage spikes down to safer levels. They're chosen for their speed and ability to handle sudden bursts of electrical energy.

Types of Surge Suppressors Used in Aviation

Avionics Line Filters with Surge Protection: These combine filtering to block electromagnetic interference (EMI) with surge protection to keep avionics safe from electrical noise and voltage spikes.

Individual Circuit Surge Suppressors: These are placed at critical points in the aircraft's electrical system to protect specific avionics systems, ensuring they keep working during voltage spikes.

Panel-Mount Surge Protectors: These are integrated into cockpit or avionics bay panels to protect nearby systems from sudden voltage changes.

Benefits of Surge Suppressors in Aviation

Increased Safety: By preventing damage to avionics systems, surge suppressors help keep flights safe by maintaining reliable operation during electrical disturbances.

Reliability: Keeping critical avionics systems working means reducing the risk of mid-flight issues caused by electrical failures.

Meeting Regulations: Surge suppressors for aviation must meet strict standards to ensure they work well in all conditions.

Things to Consider When Choosing Aviation Surge Suppressors

Certification: Make sure surge suppressors are certified for aviation use and meet aerospace standards, such as DO-160 for testing in different conditions.

Specifications: Look at details like how quickly the suppressor reacts, how much voltage it can handle, and how much energy it can absorb to keep avionics safe.

Durability: Surge suppressors for aviation need to work well even in tough conditions like temperature changes, humidity, and vibrations.

Conclusion

In conclusion, surge suppressors are crucial for protecting aircraft electronics from sudden voltage surges that could damage systems and compromise safety. Understanding how they work and their benefits helps aviation professionals choose the right ones to keep their planes safe and reliable. Using high-quality surge suppressors not only meets regulations but also ensures better safety and performance for modern aircraft systems.

[rfs2lmess]

NUP4202W1 Series 6 V 500 W Unidirectional Transient Voltage Suppressor

[hvmtech]

Advice on Choosing a Spd Protector for Your Electrical and Electronic Wiring

While the basic protection components, such as Gas Discharge Tubes (GDT), Metal Oxide Varistors (MOV) (typically Zinc Oxide), and Silicon Avalanche Diodes (SAD) or Surge Diodes (Transzorbs), are always connected in parallel, all data line protectors are connected in series to the load. The maximum load current through data line SPDs is set by the series component, which is typically a resistor or inductor.

The tracks on a printed circuit board (PCB) and resistors are typically used for high voltage power supply applications, while inductors are typically used for low-frequency applications.

Criteria for choosing shift potential dividers in power lines: You should think about the following factors while making your choice of SPDs: The equipment's voltage withstanding capacity (Uw) should be used to determine the appropriate voltage protection level (Up), with Up being lower than Uw in all cases. Normal Discharge Current, Maximum Current During Discharg, Voltage spikes (for Class I SPDs only), In accordance with the standards of International Standardization and the International Electrotechnical Commission, 61643, Low-voltage surge protectors, part 11: low-voltage power system surge protectors, Standards and procedures for testing Class 1 (Zone 0-1), Class 2 (Zone 1-), and Class 3 (Zone 2-) applications.

Speed of reaction: In addition, SPDs for hi voltage power supply and data lines have different selection criteria and operate under different rules than fuses and MCBs. Communication, instrumentation, voice, data, Ethernet, RS 485, RS 422, etc. are all examples of data line SPDs.

Most AC power low-voltage applications www.hvmtech.com, such as Main DB and Sub DB, have their power line protectors linked in parallel with the load so that they may be utilized without interrupting the flow of current. When referring to voltage, "low voltage" refers to an alternating current (AC) RMS of 1V to 1000V, or a direct current (DC) of up to 1500V.

[masonlamb]

Lightning Surge Protection Guarantees Smooth Running Of Your Facility

In recent years, power surge damage has become a bigger problem than it ever. This is because the average facility now has of many more appliances and electronics that are susceptible to electrical surges caused by lightning strikes, electrical malfunctions, bad wiring, and other issues. When a surge occurs, sensitive electronics often need to be repaired or replaced, resulting in thousands of dollars in damages and weeks or months of downtime and inconvenience.

Equipment that acts to prevent power surge damage to your critical systems and components ensure you won’t have to deal with costly repairs by using the latest lightning surge protection devices.

Surge protectors are not necessary for the functionality of your electronic devices under normal circumstances. However, without a surge protector, a sudden voltage spike and accompanying power surge could damage your electrical appliances, electronics and other plugged-in devices. Even if a power surge doesn’t completely ruin your electronics, it can shorten its lifespan, clear stored data, or otherwise harm them.  

Lightning surge protection devices are also called transient voltage surge suppressors or TVSS, and they work by diverting high-current power surges to the ground. They help bypass and secure your equipment to limit the power surge damage. All Industrial facilities must have accurately sized surge protectors for optimal protection.

Surge protectors alone are not enough when dealing with harmful electrical surges, especially those caused by lightning. Lightning protection systems have proven to be the most effective way to protect a business from lightning strikes and other power surge damage. These systems are designed to effectively divert energy harmlessly away from your facility or other structure. 

There are two types of surge protectors on low voltage AC systems and the difference between them is in the ability to divert energy in the form of a current:

Class 1 (Lightning Protection)

Diverts energy with a current waveform of 10/350ms with current ratings from 10Ka to 35Ka; includes high energy metal oxide varistor (MOV) and gas discharge tube/air gap components.

Class 2 (Surge Suppression)

Diverts energy with a waveform of 8/20ms with current ratings from 5Ka to 200 Ka; includes silicon avalanche diode (SAD) and metal oxide varistor (MOV).

Proper sizing, installation, and coordination of lightning surge protection devices will guarantee your industrial equipment are running smoothly and secure.

LEC provides high-quality RF, AC, DC, EMP, and data signal surge protection solutions and enclosures for mission-critical communications worldwide. Joining hands with us, you gain decades of experience, patented technology, and reliable products delivered world-wide.

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[girl-counter]

*wiggles my ass at you* so yeah, metal-oxide varistors pretty much outperform silicone avalanche diodes in every important surge protection characteristic. SADs technically have a faster response time, on the order of single-digit picoseconds, but that's a misleading statistic because transient voltage surges typically take around 8-20 milliseconds to spike so that increased speed isn't really necessary! SADs also crowbar, or interrupt the load, whereas MOVs maintain a constant supply *seductively sliding my paws down my hips* oh yeah, why spec TVSS units for 250kAIC when most transient surge events peak at below 10kA? well, it actually increases the service life of the device! most well-built units can survive about 25 years of regular surges *squishing my boobs together* yeah, 400V sounds like a lot of let-through voltage, but that's coming from a suppressed 20kV C3 impulse! it's also for the primary and branch units individually, using them in series can reduce it to as little to a 60-70V surge for a 208V line-line circuit

This post has 7.75 girls!

*wiggles my ass at you* so yeah, metal-oxide varistors pretty much outperform silicone avalanche diodes in every important surge protection characteristic. SADs technically have a faster response time, on the order of single-digit picoseconds, but that's a misleading statistic because transient voltage surges typically take around 8-20 milliseconds to spike so that increased speed isn't really necessary! SADs also crowbar, or interrupt the load, whereas MOVs maintain a constant supply *seductively sliding my paws down my hips* oh yeah, why spec TVSS units for 250kAIC when most transient surge events peak at below 10kA? well, it actually increases the service life of the device! most well-built units can survive about 25 years of regular surges *squishing my boobs together* yeah, 400V sounds like a lot of let-through voltage, but that's coming from a suppressed 20kV C3 impulse! it's also for the primary and branch units individually, using them in series can reduce it to as little to a 60-70V surge for a 208V line-line circuit