P4SMA82CA-E3/61 Circuit Protection

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TVS (transient voltage suppressor) diodes play a crucial role in the protection of sensitive electronic circuits against transient voltage spikes. P4SMA82CA-E3/61 is one such device from ST that is designed to protect such circuits from overvoltage and surge current. It is a high-performance transient voltage suppressor (TVS) device that can sustain high transient voltage and current peaks associated with lightning and electrostatic discharge (ESD).

The P4SMA82CA-E3/61 is a 4-pin unidirectional transient voltage suppressor diode. It can protect circuits from overvoltage and surge current as well as provide signal line protection. The diode is designed to respond quickly to the voltage transient, offering excellent protection to sensitive components and circuitry. It is capable of withstanding transient voltage spikes up to 600W (8/20μs waveform) and features low working voltage and low clamping voltage. The device is also ESD compatible with IEC 61000-4-2 (air-15kV, contact-8kV) rating.

P4SMA82CA-E3/61 can be used in various applications including power supply protection, automotive, industrial and computers, communication systems, consumer electronics, and automotive equipment. It can be used as a primary protection against high voltage and transients associated with lightning and ESD. The device can be installed in the circuits to provide protection from voltage spikes and current noise. It is designed to reduce the risk of circuit damage due to overvoltage and surge current. The device is constructed using a high-performance silicon dioxide (SiO2) material, which makes it suitable for high frequency circuits.

The working principle of P4SMA82CA-E3/61 is to absorb the transient voltage spike and then reduce it to the safe level. It uses an avalanche breakdown, which gapes in response to the transient voltage. The diode quickly responds to the voltage spike, thus clamping it to a safe level. This prevents the circuits from being damaged due to the sudden voltage pulse. The device also absorbs transient current and reduces it to a safe value. This ensures that the current passing through the protected circuits is at a safe level.

In conclusion, the P4SMA82CA-E3/61 is a reliable transient voltage suppressor that can be used to protect sensitive circuits from overvoltage and surge current. With its low working voltage and low clamping voltage, it is suitable for use in various applications, including power supplies, computers, communication systems, consumer electronics, industrial and automotive equipment. It is capable of withstanding transient voltage spikes of up to 600W and offers excellent protection against high voltage transients associated with lightning and ESD.

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