SMP36A-E3/85A

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TVS diodes are components that can be used to protect sensitive electronic components in power supplies, electric motors, and other applications. The SMP36A-E3/85A is one type of TVS diode that offers significant benefits when used in the correct application. This article will discuss the application field and working principle of this particular diode.

Application Field of SMP36A-E3/85A

The SMP36A-E3/85A is designed to protect high-speed data lines from electrostatic discharge (ESD) events. It is able to support up to 36V of reverse voltage and is rated for up to 85A of peak pulse current. As such, this diode is suitable for protecting high-speed data lines from ESD events with no degradation of signal integrity. It is also suitable for applications such as power supplies, electric motors, telecommunications, automotive, and other situations where sensitive electronic components need to be protected.

The SMP36A-E3/85A provides excellent performance when used in air discharge applications. It has a low leakage current, so it can be used to protect circuits from damaging levels of current. This diode also has excellent voltage and current derating characteristics, allowing it to remain effective even in extreme operating conditions. Finally, it is capable of withstanding temperature ranges from -55°C to +155°C, making it suitable for use in extreme environments.

Working Principle of SMP36A-E3/85A

The SMP36A-E3/85A works by diverting high-voltage transients away from sensitive electronic components. It has a Metal Oxide Varistor (MOV) element connected in parallel with a Crowbar Circuit. The MOV element acts as a voltage-dependent resistor, allowing it to divert ESD transients away from sensitive components. The MOV element also has a lower resistance at higher voltages, allowing it to absorb higher transients and to protect sensitive components from more severe ESD events.

The Crowbar Circuit is used to limit the voltage spike that is produced when an ESD event occurs. It is connected in series with a fast-acting thyristor device that acts as a switch and Shottky diodes that provide surge protection. The series components limit the circuit voltage and the current when an ESD event occurs, thereby preventing damage to the sensitive components.

The SMP36A-E3/85A has an excellent response time of less than 1 nanosecond, allowing it to absorb ESD pulses quickly and effectively. It also possesses an efficient cooling system, enabling it to withstand extreme temperatures with no degradation in performance. This diode is also UL-approved and has been tested to meet the latest industry standards.

Conclusion

The SMP36A-E3/85A is an excellent TVS diode that can protect sensitive electronic components in power supplies, electric motors, and other applications. It has a reverse voltage rating of up to 36V, can withstand temperatures ranging from -55°C to +155°C, and has a low leakage current. It also has an efficient cooling system and is UL-approved. The diode consists of an MOV element, a crowbar circuit, thyristors, and Shottky diodes, providing excellent protection against ESD events. In summary, the SMP36A-E3/85A is an ideal choice for applications where sensitive electronic components need to be protected.

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