TP120N 查看數據表（PDF） - STMicroelectronics

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TP120N

Tripolar protection for ISDN interfaces

STMicroelectronics 

TPI

2

Application information

Application information

Figure 7. Application circuit - U interface protection

R or PTC

A

TPIxx

GND

B

R or PTC

Figure 8. Application circuit - S interface protection

A

TPIxx

B

R or PTC

GND

R or PTC

A

TPIxx

B

R or PTC

GND

R or PTC

This component uses an intemal structure resulting in symetrical characteristics with a good

balanced behaviour. Its topology ensures the same breakdown voltage level for positive and

negative surges in differential and common mode.

5/9

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