R3612

R3612 PROGRAMMABLE OVERVOLTAGE PROTECTOR FOR ERICSSON COMPONENTS 3357/3 DCLIC Copyright © 1997, Power Innovations Limited, UK DECEMBER 1995 - REVISED SEPTEMBER 1997 OVERVOLTAGE PROTECTION FOR ERICSSON COMPONENTS LINE INTERFACE CIRCUITS q q PBA 3357/3 DCLIC Overvoltage Protector Dual Voltage-Programmable Protector - Wide 0 to -70 V Programming Range - Low Voltage Overshoot Crowbar and Diode - Low 5 mA max. Triggering Current - Does not Charge Gate Supply - Specified for 0°C to 70°C Operation - Plastic Dual-in-line Package Rated for International Surge Wave Shapes WAVE SHAPE 2/10 µs 0.5/700 µs 10/700 µs 10/1000 µs STANDARD TR-NWT-001089 RLM88 K17, K20, K21 TR-NWT-001089 ITSP A 80 38 38 30 K1 P PACKAGE (TOP VIEW) (Tip) K1 1 2 3 4 8 7 6 5 K1 (Tip) A A (Ground) (Ground) (Gate) G NC (Ring) K2 K2 (Ring) MD6XAV q NC - No internal connection Terminal typical application names shown in parenthesis device symbol G K2 description The R3612 is a dual forward-conducting buffered p-gate over voltage protector in a plastic DIP package. It is designed to protect the Ericsson Components PBA 3357/3 DCLIC (Dual Channel Complete Line Interface Circuit) against over voltages on the telephone line caused by lightning, a.c. power contact and induction. The R3612 limits voltages that exceed the DCLIC supply rail voltage. The DCLIC line driver section is powered from 0 V (ground) and a negative voltage in the region of -44 V to -56 V. The protector gate is connected to this negative supp...