TCM1030

TCM1030, TCM1050 DUAL TRANSIENT-VOLTAGE SUPPRESSORS D Meet or Exceed Bell Standard LSSGR Requirements D Externally-Controlled Negative Firing Voltage . . . – 90 V Max D Accurately Controlled, Wide Negative Firing Voltage Range . . . – 5 V to – 85 V D Positive Surge Current (see Note 1): TCM1030 TCM1050 10/1000 16 A 30 A 10/160 25 A 45 A 2/10 35 A 50 A D Negative Surge Current (see Note 1): TCM1030 TCM1050 10/1000 – 16 A – 25 A 10/160 – 25 A – 29 A 2/10 – 35 A – 36 A D High Holding Current – TCM1030 . . . 100 mA Min – TCM1050 . . . 150 mA Min SCTS040B – JUNE 1989 – REVISED JUNE 1997 D OR P PACKAGE (TOP VIEW) TIP VS NC RING 1 2 3 4 8 TIP 7 GND 6 GND 5 RING NC – No internal connection The D package is available taped and reeled. Add R suffix (i.e., TCM1030DR). description The TCM1030 and TCM1050 dual transient-voltage suppressors are designed specifically for telephone line card protection against lightning and transients (voltage transients) induced by ac lines. One of the TIP terminals (pin 1 or 8) and one of the RING terminals (pin 4 or 5) are connected to the tip and ring circuits of a SLIC (subscriber-line interface circuit). The battery feed connections between the SLIC and the subscriber line are from the remaining TIP (pin 1 or 8) and RING (pin 4 or 5) through the TCM1030 or the TCM1050 to the tip and ring lines. Transients are suppressed between tip and ground, and ring and ground. Positive transients are clamped by diodes D1 and D2....