TISP61089QB_12 Datasheet, PDF (1/5 Pages) Bourns Electronic Solutions – PROGRAMMABLE OVERVOLTAGE PROTECTOR QUAD FORWARD-CONDUCTING P-GATE THYRISTOR

*RoHS ^COMPLIANT
TISP61089QB
PROGRAMMABLE OVERVOLTAGE PROTECTOR
QUAD FORWARD-CONDUCTING P-GATE THYRISTOR
TISP61089QB SLIC Overvoltage Protector
Quad Voltage-Programmable Protector
- Wide -20 V to -155 V Programming Range
- Low 5 mA max. Gate Triggering Current
- High 150 mA min. Holding Current
- Rated for ITU-T and YD/T-950 10/700 impulses
- Rated for Telcordia Intra-building impulses
10/700 Protection Voltage Specified
Elemen t
Protection Level
40 A, 5/310
Diode
+12
Crowbar
V_GG = -48 V
-64
D Package (Top View)
K1
1
G1,G2
2
G3,G4
3
K3
4
Device Symbol
K1
8 K2
7A
6A
5
K4 _MDRXAN
Description
Bourns^® TISP61089QB is a quad forward-conducting buffered p-gate
overvoltage protector. It is designed to protect monolithic SLICs
K2
(Subscriber Line Interface Circuits) against overvoltages on the tele-
phone line caused by lightning, a.c. power contact and induction. The
A
TISP61089QB limits voltages that exceed the SLIC supply rail voltage.
A
The TISP61089QB parameters are specified to allow equipment compli-
ance with Telcordia GR-1089-CORE Intra-building, ITU-T K.20, K.21 and
K3
K.45 and YD/T-950.
G1,G2
The SLIC line driver section is typically powered from 0 V (ground) and a
negative voltage in the region of -20 V to -155 V. The protector gate is
connected to this negative supply. This references the protection
G3,G4
(clipping) voltage to the negative supply voltage. As the protection
voltage will then track the negative supply voltage the overvoltage stress
on the SLIC is minimized.
K4
SDRXAIA
Positive overvoltages are clipped to ground by diode forward conduction.
Negative overvoltages are initially clipped close to the SLIC negative supply
rail value. If sufficient current is available from the overvoltage, then the protector will crowbar into a low voltage on-state condition. As the
overvoltage subsides, the high holding current of the crowbar helps prevent d.c. latchup.
These monolithic protection devices are fabricated in ion-implanted planar vertical power structures for high reliability and are virtually
transparent in normal operation. The TISP61089QB buffered gate design reduces the loading on the SLIC supply during overvoltages caused
by power cross and induction. The TISP61089QB is available in an 8-pin plastic small-outline surface mount package.
How to Order
Device
Package
Carrier
TISP61089QB 8 Pin Small Outline (D008) Embossed Tape Reeled
Order As
TISP61089QBDR-S
Marking Code
1089QB
Standard Quantity
2500
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
JULY 2010 - REVISED MAY 2012
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.