TISPL758LF3 Bourns, Inc., TISPL758LF3 Datasheet

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TISPL758LF3

Manufacturer Part Number
TISPL758LF3
Description
Integrated Symmetrical And Asymmetrical Bidirectional Overvoltage Protectors For
Manufacturer
Bourns, Inc.
Datasheet
Symmetrical and Asymmetrical Characteristics for
Optimum Protection of Lucent L7581/2/3 LCAS
Rated for International Surge Wave Shapes
Ion-Implanted Breakdown Region
— Precise And Stable Voltage
— Low Voltage Overshoot Under Surge
Planar Passivated Junctions
— Low Off-State Current................................................< ±10 µA
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.
Description
How to Order
TISPL758LF3D
R-G (ASYMMETRICAL)
T-G (SYMMETRICAL)
Wave Shape
Device
10/1000 µ s
10/160 µ s
10/700 µ s
10/560 µ s
2/10 µ s
8/20 µ s
Terminal Pair
Customized versions available
Tube
Taped and reeled
Carrier
GR-1089-CORE
GR-1089-CORE
ITU-T K20/21
ANSI C62.41
FCC Part 68
FCC Part 68
Standard
+105, -180
V
± 105
DRM
V
TISPL758LF3D-S
TISPL758LF3DR-S
Order As
+130, -220
I
175
120
TSP
60
50
45
35
TISPL758LF3D LCAS Protector
A
V
± 130
LUCENT TECHNOLOGIES L7581/2/3 LINE CARD ACCESS SWITCHES
(BO)
V
INTEGRATED SYMMETRICAL AND ASYMMETRICAL
BIDIRECTIONAL OVERVOLTAGE PROTECTORS FOR
D Package (Top View)
Device Symbol
..............................................UL Recognized Component
Terminals T, R and G correspond to the
alternative line designators of A, B and C
NC
NC
NC - No internal connection
R
T
T
1
2
3
4
G
SD3XAA
8
7
6
5
R
G
G
G
G
MDXX AEB
TISPL758LF3D

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TISPL758LF3 Summary of contents

Page 1

... 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. ...

Page 2

... For negative surges, the high crowbar holding current prevents d.c. latchup with the SLIC current, as the surge current subsides. The TISPL758LF3 is guaranteed to voltage limit and withstand the listed international lightning surges in both polarities. Support from the Microelectronics Group of Lucent Technologies Inc. is gratefully acknowledged in the definition of the TISPL758LF3D voltage levels and for performing TISPL758LF3D evaluations. ...

Page 3

... TISPL758LF3D LCAS Protector Electrical Characteristics for the T-G and R-G Terminal Pairs °C (Unless Otherwise Noted) Parameter Repetitive peak off ± V DRM D state current V Breakover voltage dv/dt = ± 250 V/ms, R (BO) Impulse breakover Rated impulse conditions with operational pass V (BO) voltage series resistor ...

Page 4

... TISPL758LF3D LCAS Protector Parameter Measurement Information V DRM -v I DRM I (BO) V (BO) Quadrant III Switching Characteristic Figure 1. Asymmetrical Voltage-Current Characteristic for R-G Terminal Pair -v I (BO) V Quadrant III Switching Characteristic Figure 2. Symmetrical Voltage-current Characteristic for T-G Terminal Pair +i I TSP I TSM ...

Page 5

... TISPL758LF3D LCAS Protector Typical Characteristics OFF-STATE CURRENT vs JUNCTION TEMPERATURE 100 V = ± 0.1 0.01 0.001 - Junction Temperature - ° Figure 3. NORMALIZED BREAKOVER VOLTAGE vs RATE OF RISE OF PRINCIPLE CURRENT 1.3 1.2 1.1 1.0 0.001 0.01 0.1 di/dt - Rate of Rise of Principle Current - A/ µ s Figure 5. JANUARY 1998 – REVISED JANUARY 2007 Specifications are subject to change without notice ...

Page 6

... TISPL758LF3D LCAS Protector Applications Information OVER- CURRENT PROTECTION TISPL758LF3D TIP WIRE R1a R1b RING WIRE Figure 7. LCAS Protection with a TISPL758LF3D LCAS T LINE Th1 Th2 R LINE R T RINGING RINGING R2b R2a ±V RING V RINGBAT S4b S4a RING GENERATOR Customers should verify actual device performance in their specific applications. ...

Page 7

... Fax +1-951-781-5700 +41-41-7685510 +886-2-25624116 “TISP” trademark of Bourns, Ltd., a Bourns Company, and is Registered in U.S. Patent and Trademark Office. “Bourns” registered trademark of Bourns, Inc. in the U.S. and other countries. COPYRIGHT© 2005, BOURNS, INC. LITHO IN U.S.A. e 07/05 TSP0410 ...

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