THBT15011D 查看數據表（PDF） - STMicroelectronics

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THBT15011D

TRIPOLAR OVERVOLTAGE PROTECTION FOR TELECOM LINE

STMicroelectronics 

THBTxxx11D

TEST CIRCUIT 1 for IBO and VBO parameters :

Auto

Transformer

220V/2A

tp = 20ms

R1

static

140

relay.

R2

240

Vout

K

IBO

measure

D.U.T

VBO

measure

Transformer

220V/800V

5A

TEST PROCEDURE :

n Pulse Test duration (tp = 20ms):

- For Bidirectional devices = Switch K is closed

- For Unidirectional devices = Switch K is open.

n VOUT Selection

- Device with VBO < 200 Volt

- VOUT = 250 VRMS, R1 = 140 Ω.

- Device with VBO  200 Volt

- VOUT = 480 VRMS, R2 = 240 Ω.

TEST CIRCUIT 2 for IH parameter.

R

VBAT = - 48 V

D.U.T.

- VP

Surge generator

This is a GO-NOGO test which allows to confirm the holding current (IH) level in a functional

test circuit.

TEST PROCEDURE :

n 1) Adjust the current level at the IH value by short circuiting the AK of the D.U.T.

2) Fire the D.U.T with a surge Current : Ipp = 10A , 10/1000 µs.

3) The D.U.T will come back off-state within 50 ms max.

4/9

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