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BT201D

TRIPOLAR OVERVOLTAGE PROTECTION FOR TELECOM LINE

STMicroelectronics 

®

Application Specific Discretes

A.S.D .™

THBTxxx11D

TRIPOLAR OVERVOLTAGE

PROTECTION FOR TELECOM LINE

FEATURES

n BIDIRECTIONAL CROWBAR PROTECTION

BETWEEN TIP AND GND, RING AND GND

AND BETWEEN TIP AND RING.

n PEAK PULSE CURRENT :

IPP = 30A for 10/1000µs surge.

n HOLDING CURRENT :

IH = 150mA.

n AVAILABLE IN SO8 PACKAGES.

n LOW DYNAMIC BREAKOVER VOLTAGE.

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.

COMPLIES WITH BELLCORE STANDARDS :

TR-NWT-001089:

10/1000µs

2/10µs

2/10µs

1000V

2500V

(first level)

5000V

(second level)

with line series resistors of 56Ω

SO-8

SCHEMATIC DIAGRAM

TIP 1

GND 2

GND 3

RING 4

8 TIP

7 GND

6 GND

5 RING

TM: ASD is trademarks of STMicroelectronics.

October 2003 - Ed: 7A

1/9

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