TPC12CAHM3/I Circuit Protection

A Transient Voltage Suppressor Diode, also known as a TVS diode, is an important tool for protecting circuits against electrical transients. The TPC12CAHM3/I is a reverse-biased diodes from Toshiba used for electrostatic discharge protection. This TVS diode features fast response time and a wide operating temperature range.

Application Field

The TPC12CAHM3/I can be utilized to protect I/O ports, power supplies, digital communications lines, coaxial cables, and data lines from high-energy, high-voltage transients. It can be used in applications where overvoltage protection, high speed ESD protection, lightning protection, and surge protection are required. The TVS diode can also be used for input/output isolation for ESD protection, and in DC/DC converters, power supplies, and telecommunications systems.

Working Principle

The TPC12CAHM3/I is a reverse biased diode, meaning the device will only conduct when the applied voltage polarity is reversed. In normal operating conditions, the device is in an open state and no current will flow through the device. However, when an electrical transient surges through the circuit, the device will quickly become forward-biased and conduct the current. This will absorb the transient’s energy and protect any sensitive components downstream of the TVS diode.

The TPC12CAHM3/I is a bi-directional TVS diode, meaning it can protect both the positive and negative portions of the circuit. The reverse breakdown voltage of the device is 5.0 V, meaning a potential as low as 5.0 V may cause the device to become forward-biased and start conducting current. The device is rated for 1500W peak pulse power per line, meaning it can absorb a large amount of energy before becoming damaged.

Conclusion

The TPC12CAHM3/I from Toshiba is a reverse biased, bi-directional TVS diode designed to provide protection for circuits from unexpected electrical transients. It is rated for a reverse breakdown of 5.0 V and 1500W peak pulse power, making it an ideal device for applications where overvoltage, ESD, lightning, or surge protection is required.