The TISP83121D is a dual-gate reverse-blocking unidirectional thyristor designed for the protection of dual-voltage ringing SLICs (Subscriber Line Interface Circuits) against overvoltages on the telephone line caused by lightning, a.c. power contact and induction.
The TISP83121D is a monolithic protection device designed to protect Subscriber Line Interface Circuits (SLICs) against overvoltages caused by lightning, AC power contact, and induction. It features a four-layer NPNP silicon thyristor structure with dual-gate control for handling both positive and negative voltage surges.
| Repetitive peak off-state voltage | 100 V |
|---|---|
| Junction temperature range | -40 to +150 °C |
| Storage temperature range | -65 to +150 °C |
It is designed for the protection of dual-voltage ringing SLICs against overvoltages on the telephone line.
Typically, 5 lines are protected by two TISP83121D devices plus diode steering networks.
The device can handle a non-repetitive peak on-state pulse current of 500 A for an 8/20 us waveform.