H
VE S C O
AV R M
A I S IO P L
L A N IA
BL S N T
E
TISP4125H3BJ/TISP4219H3BJ,
TISP4125M3BJ/TISP4219M3BJ
LCAS RING AND TIP PROTECTION PAIRS
BIDIRECTIONAL THYRISTOR OVERVOLTAGE PROTECTORS
*R
o
TISP4xxxH3/M3BJ Series for LCAS Protection
Customized Voltage for LCAS Protection
Battery-Backed Ringing ............................................. 87 V rms
Ground-Backed Ringing ........................................... 101 V rms
SMBJ Package (Top View)
Device
‘4125
‘4219
V
DRM
V
100
180
V
(BO)
V
125
219
LCAS
TERMINAL
TIP
RING
MDXXBGE
R(B)
1
2
T(A)
Low Differential Capacitance .................................39 pF max.
Device Symbol
.................................................... UL Recognized Components
T
Rated for International Surge Wave Shapes
I
TSP
Wave Shape
Standard
H3
SERIES
2/10
µs
8/20
µs
10/160
µs
10/700
µs
10/560
µs
10/1000
µs
GR-1089-CORE
IEC 61000-4-5
FCC Part 68
ITU-T K.20/21/45
FCC Part 68
GR-1089-CORE
500
300
250
200
160
100
A
M3
SERIES
300
220
120
100
75
50
SD4XAA
R
Terminals T and R correspond to the
alternative line designators of A and B
Description
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
For Standard
Termination Finish
Order As
TISP4125H3BJR
BJ (J-Bend DO-214AA/SMB) Embossed Tape Reeled
TISP4219H3BJR
TISP4125M3BJR
TISP4219M3BJR
For Lead Free
Termination Finish
Order As
TISP4125H3BJR-S
TISP4219H3BJR-S
TISP4125M3BJR-S
TISP4219M3BJR-S
Device
TISP4125H3BJ
TISP4219H3BJ
TISP4125M3BJ
TISP4219M3BJ
Package
Carrier
*RoHS Directive 2002/95/EC Jan 27 2003 including Annex
JUNE 2001 – REVISED FEBRUARY 2005
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
BOURNS [ BOURNS ELECTRONIC SOLUTIONS ]
