TISP4125F3 Datasheet, PDF (1/12 Pages) Power Innovations Ltd – SYMMETRICAL TRANSIENT VOLTAGE SUPPRESSORS

Copyright © 1997, Power Innovations Limited, UK
TISP4125F3, TISP4150F3, TISP4180F3
SYMMETRICAL TRANSIENT
VOLTAGE SUPPRESSORS
MARCH 1994 - REVISED SEPTEMBER 1997
TELECOMMUNICATION SYSTEM SECONDARY PROTECTION
q Ion-Implanted Breakdown Region
Precise and Stable Voltage
Low Voltage Overshoot under Surge
DEVICE
‘4125F3
‘4150F3
‘4180F3
V_DRM
V
100
120
145
V_(BO)
V
125
150
180
D PACKAGE
(TOP VIEW)
T1
T2
T3
T4
8R
7R
6R
5
R _MDXXAI
Specified ratings require the connection
of pins 1, 2, 3 and 4 for the T terminal.
q Planar Passivated Junctions
Low Off-State Current < 10 µA
SL PACKAGE
(TOP VIEW)
q Rated for International Surge Wave Shapes
WAVE SHAPE
STANDARD
I_TSP
A
2/10 µs
FCC Part 68
175
8/20 µs
ANSI C62.41
120
10/160 µs
FCC Part 68
60
10/560 µs
FCC Part 68
45
0.5/700 µs
RLM 88
38
FTZ R12
50
10/700 µs
VDE 0433
50
CCITT IX K17/K20
50
10/1000 µs
REA PE-60
35
T
1
R
2
device symbol
MDXXAH
MD4XAA
D PACKAGE
T
T
T
T
4
3
2
1
SL PACKAGE
T
1
q Surface Mount and Through-Hole Options
PACKAGE
Small-outline
Small-outline taped
and reeled
Single-in-line
PART # SUFFIX
D
DR
SL
q UL Recognized, E132482
description
These medium voltage symmetrical transient
voltage suppressor devices are designed to
protect two wire telecommunication applications
against transients caused by lightning strikes
and a.c. power lines. Offered in three voltage
variants to meet battery and protection
requirements they are guaranteed to suppress
and withstand the listed international lightning
surges in both polarities.
Transients are initially clipped by breakdown
clamping until the voltage rises to the breakover
level, which causes the device to crowbar. The
5
6
7
8
2
RR RR
R
SD4XAE
Terminals T and R correspond to the
alternative line designators of A and B
high crowbar holding current prevents d.c.
latchup as the current 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
The small-outline 8-pin assignment has been
carefully chosen for the TISP series to maximise
the inter-pin clearance and creepage distances
which are used by standards (e.g. IEC950) to
establish voltage withstand ratings.
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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