
JUNE 2001 – REVISED FEBRUARY 2005
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
TISP4xxxH3/M3BJ Series for LCAS Protection
TISP4125H3BJ/TISP4219H3BJ,
TISP4125M3BJ/TISP4219M3BJ
LCAS RING AND TIP PROTECTION PAIRS
BIDIRECTIONAL THYRISTOR OVERVOLTAGE PROTECTORS
Description
Customized Voltage for LCAS Protection
Battery-Backed Ringing ............................................. 87 V rms
Ground-Backed Ringing ........................................... 101 V rms
Low Differential Capacitance .................................39 pF max.
.................................................... UL Recognized Components
Rated for International Surge Wave Shapes
These protector pairs have been formulated to limit the peak voltages on the line terminals of the ‘7581/2/3 LCAS (Line Card Access Switches)
type devices. An LCAS may also be referred to as a Solid State Relay, SSR, i.e. a replacement of the conventional electro-mechanical relay.
Overvoltages are normally caused by a.c. power system or lightning flash disturbances which are induced or conducted on to the telephone
line. These overvoltages are initially clipped by protector breakdown clamping until the voltage rises to the breakover level, which causes the
device to crowbar into a low-voltage on state. This low-voltage on state causes the current resulting from the overvoltage to be safely diverted
through the device. For negative surges, the high crowbar holding current prevents d.c. latchup with the SLIC current, as the surge current
subsides.
Each protector consists of a symmetrical voltage-triggered bidirectional thyristor. They are guaranteed to voltage limit and withstand the listed
international lightning surges in both polarities.
How to Order
Device Symbol
SMBJ Package (Top View)
Device
V
DRM
V
V
(BO)
V
LCAS
TERMINAL
‘4125
100
125
TIP
‘4219
180
219
RING
Wave Shape
Standard
I
TSP
A
H3
SERIES
M3
SERIES
2/10
μ
s
8/20
μ
s
10/160
μ
s
10/700
μ
s
10/560
μ
s
10/1000
μ
s
GR-1089-CORE
500
300
IEC 61000-4-5
300
220
FCC Part 68
250
120
ITU-T K.20/21/45
200
100
FCC Part 68
160
75
GR-1089-CORE
100
50
1
2
T(A)
R(B)
MDXXBGE
T
R
SD4XAA
Terminals T and R correspond to the
alternative line designators of A and B
*RoHS Directive 2002/95/EC Jan 27 2003 including Annex
Device
Package
Carrier
TISP4125H3BJ
TISP4219H3BJ
TISP4125M3BJ
TISP4219M3BJ
BJ (J-Bend DO-214AA/SMB) Embossed Tape Reeled
TISP4125H3BJR
TISP4219H3BJR
TISP4125M3BJR
TISP4219M3BJR
TISP4125H3BJR-S
TISP4219H3BJR-S
TISP4125M3BJR-S
TISP4219M3BJR-S
For Standard
Termination Finish
Order As
For Lead Free
Termination Finish
Order As
*RHAVALABE
VRSONS