TCM1030, TCM1050

DUAL TRANSIENT-VOLTAGE SUPPRESSORS

SCTS040B – JUNE 1989 – REVISED JUNE 1997

1

POST OFFICE BOX 655303

Requirements

Voltage ...– 90 V Max

Firing Voltage Range...– 5 V to – 85 V

TCM1030

TCM1050

10/1000

16 A

30 A

10/160

25 A

45 A

2/10

35 A

50 A

TCM1030

TCM1050

10/1000

– 16 A

– 25 A

10/160

– 25 A

– 29 A

2/10

– 35 A

– 36 A

– TCM1030... 100 mA Min

– TCM1050... 150 mA Min

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.

the SCRs, Q1 and Q2, to crowbar. The high holding current of the SCRs prevent dc latchup as the transient

subsides.

The TCM1030 and TCM1050 are characterized for operation from – 40

°C to 85°C.

NOTE 1: The notation 10/1000 refers to a waveshape having tr = 10 µs and tw = 1000 µs ending at 50% of the peak value. The notation 10/160

is tr = 10 µs and tw = 160 µs. The notation 2/10 is tr = 2 µs and tw = 10 µs.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

1

2

3

4

8

7

6

5

TIP

NC

RING

TIP

GND

GND

RING

D OR P PACKAGE

(TOP VIEW)

NC – No internal connection

The D package is available taped and

reeled. Add R suffix (i.e., TCM1030DR).

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

Copyright

© 1997, Texas Instruments Incorporated