Document
TISP4072F3LM, TISP4082F3LM, TISP4125F3LM, TISP4150F3LM, TISP4180F3LM TISP4240F3LM, TISP4260F3LM, TISP4290F3LM, TISP4320F3LM, TISP4380F3LM BIDIRECTIONAL THYRISTOR OVERVOLTAGE PROTECTORS
Copyright © 1999, Power Innovations Limited, UK DECEMBER 1998 - REVISED APRIL 1999
TELECOMMUNICATION SYSTEM SECONDARY PROTECTION
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Ion-Implanted Breakdown Region Precise and Stable Voltage Low Voltage Overshoot under Surge
DEVICE ‘4072 ‘4082 ‘4125 ‘4150 ‘4180 ‘4240 ‘4260 ‘4290 ‘4320 ‘4380 VDRM V 58 66 100 120 145 180 200 220 240 270 V(BO) V 72 82 125 150 180 240 260 290 320 380
LM PACKAGE (TOP VIEW)
T(A) NC R(B)
1 2 3
MD4XAT
NC - No internal connection on pin 2 LMF PACKAGE (LM PACKAGE WITH FORMED LEADS) (TOP VIEW)
T(A) NC R(B)
1 2 3
MD4XAKB
NC - No internal connection on pin 2
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Rated for International Surge Wave Shapes
WAVE SHAPE 10/160 µs 0.5/700 µs 10/700 µs 10/560 µs 10/1000 µs STANDARD FCC Part 68 I3124 ITU-T K20/21 FCC Part 68 REA PE-60 ITSP A 60 38 50 45 35 R PACKAGE TYPE Straight Lead DO-92 Bulk Pack Straight Lead DO-92 Tape and Reeled
SD4XAA
device symbol
T
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Ordering Information
DEVICE TYPE TISP4xxxF3LM TISP4xxxF3LMR
Terminals T and R correspond to the alternative line designators of A and B
TISP4xxxF3LMFR Formed Lead DO-92 Tape and Reeled
description
These devices are designed to limit overvoltages on the telephone line. Overvoltages are normally caused by a.c. power system or lightning flash disturbances which are induced or conducted on to the telephone line. A single device provides 2-point protection and is typically used for the protection of 2-wire telecommunication equipment (e.g. between the Ring to Tip wires for telephones and modems). Combinations of devices can be used for multi-point protection (e.g. 3-point protection between Ring, Tip and Ground). The protector consists of a symmetrical voltage-triggered bidirectional thyristor. Overvoltages are initially clipped by breakdown clamping until the voltage rises to the breakover level, which causes the device to crowbar into a low-voltage on state. This low-voltage on state causes the current resulting from the overvoltage to be safely diverted through the device. The high crowbar holding current prevents d.c. latchup as the diverted current subsides. This TISP4xxxF3LM range consists of ten voltage variants to meet various maximum system voltage levels (58 V to 270 V). They are guaranteed to voltage limit and withstand the listed international lightning surges in both polarities. These protection devices are supplied in a DO-92 (LM) cylindrical plastic package. The
PRODUCT
INFORMATION
1
Information is current as of publication date. Products conform to specifications in accordance with the terms of Power Innovations standard warranty. Production processing does not necessarily include testing of all parameters.
TISP4072F3LM, TISP4082F3LM, TISP4125F3LM, TISP4150F3LM, TISP4180F3LM TISP4240F3LM, TISP4260F3LM, TISP4290F3LM, TISP4320F3LM, TISP4380F3LM BIDIRECTIONAL THYRISTOR OVE.