THBT200S1 Datasheet, PDF (5/7 Pages) STMicroelectronics – TRANSIENT VOLTAGE SUPPRESSOR FOR SLIC PROTECTION

APPLICATION CIRCUIT
Typical line card protection concept
RING
GENERATOR
THBT200S1
LINE A
T
E
S
T
R
E
L
A
Y
S
LINE B
PTC
PTC
THBT200S1
RING
RELAY
FUNCTIONAL DESCRIPTION
Line A
TIP
-V
bat
TIP
SLIC
RING
THDTxxx
or
LCPxxx
LINE A AND LINE B PROTECTION.
Each line (TIP and RING) is protected by a bidi-
rectional Trisil, which triggers at a maximum volt-
age equal to the VBO.
The differential mode is also assured at VBO.
LineB
Ring
5/7
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