Description
These ‘61089 parts are all dual forward-conducting buffered p-gate thyristor (SCR) overvoltage protectors. They are designed to protect monolithic SLICs (Subscriber Line Interface Circuits) against overvoltages on the telephone line caused by lightning, a.c. power contact and induction. The ‘61089 limits voltages that exceed the SLIC supply rail voltage. The ‘61089 parameters are specified to allow equipment compliance with Telcordia (formally Bellcore) GR-1089-CORE and ITU-T recommendations K.20, K.21 and K.45.

    Overvoltage Protection for Negative Rail SLICs
    Dual Voltage-Tracking Protectors
        - ‘61089 for Battery Voltages to ......................................... -75 V
        - ‘61089A for Battery Voltages to ..................................... -100 V
        - Low Gate Triggering Current ....................................... < 5 mA
        - High Holding Current ............................................... > 150 mA
    Rated for GR-1089-CORE and K.44 Impulses
    2/10 Overshoot Voltage Specified
    Package Options
        - Surface Mount 8-pin Small-Outline
            Line Feed-Thru Connection (D)
            Shunt Version Connection (SD)
        - Through-Hole 8-pin DIP (P)
    UL Recognized Components