TISP4240LP Datasheet, PDF (1/7 Pages) Power Innovations Ltd – SYMMETRICAL TRANSIENT VOLTAGE SUPPRESSORS

Copyright © 1997, Power Innovations Limited, UK
TISP4240LP
SYMMETRICAL TRANSIENT
VOLTAGE SUPPRESSORS
MARCH 1997 - REVISED SEPTEMBER 1997
TELECOMMUNICATION SYSTEM SECONDARY PROTECTION
q Ion-Implanted Breakdown Region
Precise and Stable Voltage
Low Voltage Overshoot under Surge
DEVICE
‘4240LP
V_(Z) V_(BO)
V
V
180 240
q Planar Passivated Junctions
Low Off-State Current < 10 µA
q Rated for International Surge Wave Shapes
WAVE SHAPE
STANDARD
I_TSP
A
10/700 µs
CCITT IX K17
38
A(T)
NC
B(R)
LP PACKAGE
(TOP VIEW)
1
2
3
NC - No internal connection
LP PACKAGE
WITH FORMED LEADS
(TOP VIEW)
A(T)
1
NC
2
3
q Package Options
PACKAGE
LP
LP with fomed leads
PACKING
Bulk
Tape and Reel
PART # SUFFIX
None
R
B(R)
NC - No internal connection
device symbol
MDTRAB
MD4XAF
description
The TISP4240LP is designed specifically for
telephone equipment protection against lightning
and transients induced by a.c. power lines.
These devices consist of a bidirectional
suppressor element connecting the A and B
terminals. They will suppress inter-wire voltage
transients.
Transients are initially clipped by zener action
until the voltage rises to the breakover level,
which causes the device to crowbar. The high
crowbar holding current prevents d.c. latchup as
the transient subsides.
These monolithic protection devices are
fabricated in ion-implanted planar structures to
ensure precise and matched breakover control
and are virtually transparent to the system in
normal operation.
PRODUCT INFORMATION
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.
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