THBT15011_08 Datasheet, PDF (1/10 Pages) STMicroelectronics – Tripolar overvoltage protection for telecom line

THBT15011, THBT20011, THBT27011
Tripolar overvoltage protection for telecom line
Features
■ Bidirectional crowbar protection between tip
and gnd, ring and gnd and between tip and ring
■ Peak pulse current:
I_PP = 30 A for 10/1000 µs surge
■ Holding current: I_H = 150 mA
Complies with Telcordia standards
■ Telcordia GR-1089-Core, (second level) with
line series resistors
– 10/1000 µs, 1000 V
– 2/10 µs, 2500 V (first level)
– 2/10 µs, 5000 V
Description
Dedicated to telecommunication equipment
protection, these devices provide a triple
bidirectional protection function.
They ensure the same protection capability with
the same breakdown voltage both in longitudinal
mode and transversal mode.
A particular attention has been given to the
internal wire bonding. The “4-point” configuration
ensures a reliable protection, eliminating
overvoltages introduced by the parasitic
inductances of the wiring (Ldi/dt), especially for
very fast transient overvoltages.
Dynamic characteristics have been defined for
several types of surges, in order to meet the SLIC
maximum ratings.
SO-8
Figure 1. Schematic diagram
TIP 1
GND 2
GND ₃
RING 4
8 TIP
7 GND
6 GND
5 RING
February 2008
Rev 8
1/10
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