description
The TISP3180 is designed specifically for telephone equipment protection against lightning and transients induced by a.c. power lines. These devices consist of two bidirectional suppressor elements connected to a Common (C) terminal. They will supress voltage transients between terminals A and C, B and C, and A and B.
Transients are initially clipped by zener action until the voltage rises to the breakover level, which causes the device to crowbar. The high crowbar holding current prevents d.c. latchup as the transient subsides.
These monolithic protection devices are fabricated in ion-implanted planar structures to ensure precise and matched breakover control and are virtually transparent to the system in normal operation.

TELECOMMUNICATION SYSTEM SECONDARY PROTECTION

● Ion-Implanted Breakdown Region
   Precise and Stable Voltage
   Low Voltage Overshoot under Surge
● Planar Passivated Junctions
   Low Off-State Current < 10 µA
● Rated for International Surge Wave Shapes
● UL Recognized, E132482