TISPL758LF3D_07 Datasheet, PDF (1/7 Pages) Bourns Electronic Solutions – INTEGRATED SYMMETRICAL AND ASYMMETRICAL BIDIRECTIONAL OVERVOLTAGE PROTECTORS

*RoHS ^COMPLIANT
TISPL758LF3D
INTEGRATED SYMMETRICAL AND ASYMMETRICAL
BIDIRECTIONAL OVERVOLTAGE PROTECTORS FOR
LUCENT TECHNOLOGIES L7581/2/3 LINE CARD ACCESS SWITCHES
TISPL758LF3D LCAS Protector
Symmetrical and Asymmetrical Characteristics for
Optimum Protection of Lucent L7581/2/3 LCAS
Terminal Pair
V_DRM
V
T-G (SYMMETRICAL)
±105
R-G (ASYMMETRICAL)
+105, -180
Customized versions available
V_(BO)
V
±130
+130, -220
Rated for International Surge Wave Shapes
Wave Shape
2/10 µs
8/20 µs
10/160 µs
10/700 µs
10/560 µs
10/1000 µs
I_TSP
Standard
A
GR-1089-CORE
175
ANSI C62.41
120
FCC Part 68
60
ITU-T K20/21
50
FCC Part 68
45
GR-1089-CORE
35
Ion-Implanted Breakdown Region
—Precise And Stable Voltage
— Low Voltage Overshoot Under Surge
Planar Passivated Junctions
— Low Off-State Current................................................< ±10 µA
How to Order
Device
Carrier
TISPL758LF3D
Tube
Taped and reeled
Order As
TISPL758LF3D-S
TISPL758LF3DR-S
D Package (Top View)
T1
NC 2
8G
7G
NC 3
R4
6G
5
G _{MDXX AEB}
NC - No internal connection
Device Symbol
T
R
SD3XAA
G
Terminals T, R and G correspond to the
alternative line designators of A, B and C
..............................................UL Recognized Component
Description
The TISPL758LF3 is an integrated combination of a symmetrical bidirectional overvoltage protector and an asymmetrical bidirectional
overvoltage protector. It is designed to limit the peak voltages on the line terminals of the Lucent Technologies L7581/2/3 LCAS (Line Card
Access Switches). An LCAS may also be referred to as a Solid State Relay, SSR, i.e. a replacement of the conventional electro-mechanical
relay.
The TISPL758LF3D voltages are chosen to give adequate LCAS protection for all switch conditions. The most potentially stressful condition is
low level power cross when the LCAS switches are closed. Under this condition, the TISPL758LF3D limits the voltage and corresponding LCAS
dissipation until the LCAS thermal trip operates and opens the switches.
Under open-circuit ringing conditions, the line ring (R) conductor will have high peak voltages. For battery backed ringing, the ring conductor
will have a larger peak negative voltage than positive i.e. the peak voltages are asymmetric. An overvoltage protector with a similar voltage
asymmetry will give the most effective protection. On a connected line, the tip (T) conductor will have much smaller voltage levels than the
open-circuit ring conductor values. Here a symmetrical voltage protector gives adequate protection.
*RoHS Directive 2002/95/EC Jan 27 2003 including Annex
JANUARY 1998 – REVISED JANUARY 2007
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.