TPSMB36A

TPSMB36A is a six string common anode TVS diode array characterized by very low operating and clamping voltage, with surge capability of 1.0kA (8/20μs). The device has two zener diode strings for ESD protection. It is suitable for contact and telecommunication ports 4kV (ESD) - protection.

Application field

TPSMB36A is a widely used family of transient voltage suppressors (TVSs), these can be used in automotive electronics, computing systems, industrial, telecom and consumer markets. These diodes provide protection from electrostatic discharge, high power transients, high frequency long-term AC line fault, and any lightning strikes. These devices are also designed to protect sensitive circuits in mobile, automotive and consumer electronic applications. Because of the extremely low capacitance and ultra-high surge capability, they can offer protection from high power transients and lightning strikes.

Working principle

The working principle of the TPSMB36A is based on the principle of the voltage breakdown between two electrodes placed in an insulator or a semiconductor material. When a high voltage is applied, the electric field intensity in the junction between the two electrodes reaches the dielectric breakdown strength and a reverse current is discharged. This process is called avalanche breakdown.

In the TPSMB36A, the two electrodes are connected together and the junction between them is called the protection circuit. This diode has six strings with two of them connected in series and then connected to the ground. This circuit consists of a high-voltage zener diode string and a low-voltage switched diode string. When a negative or positive transient voltage is applied to the TPSMB36A, the low-voltage switched string will start conducting and the zener diode will break down at a particular voltage, depending on its zener voltage. This breakdown will discharge the voltage to the ground and thereby protect the circuit. The relatively low breakdown voltage of the TPSMB36A makes it suitable for a wide range of applications.