5080H3 데이터 시트보기 (PDF) - Power Innovations

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5080H3

FORWARD-CONDUCTING UNIDIRECTIONAL THYRISTOR OVERVOLTAGE PROTECTORS

Power Innovations 

TISP5070H3BJ, TISP5080H3BJ, TISP5110H3BJ, TISP5150H3BJ

FORWARD-CONDUCTING

UNIDIRECTIONAL THYRISTOR OVERVOLTAGE PROTECTORS

JANUARY 1998 - REVISED MARCH 1999

deployment

APPLICATIONS INFORMATION

These devices are two terminal overvoltage protectors. They may be used either singly to limit the voltage

between two points (Figure 11) or in multiples to limit the voltage at several points in a circuit (Figure 12).

SIGNAL

AI4XAC

R1a

R1b

TISP5xxxH3BJ

-D.C.

Figure 11. POWER SUPPLY PROTECTION

In Figure 11, the TISP5xxxH3BJ limits the maximum voltage of the negative supply to -V(BO) and +VF. This

configuration can be used for protecting circuits where the voltage polarity does not reverse in normal

operation. In Figure 12, the two TISP5xxxH3BJ protectors, Th4 and Th5, limit the maximum voltage of the

SLIC (Subscriber Line Interface Circuit) outputs to -V(BO) and +VF. Ring and test protection is given by

protectors Th1, Th2 and Th3. Protectors Th1 and Th2 limit the maximum tip and ring wire voltages to the

±V(BO) of the individual protector. Protector Th3 limits the maximum voltage between the two conductors to its

±V(BO) value. If the equipment being protected has all its vulnerable components connected between the

conductors and ground, then protector Th3 is not required.

TIP

WIRE

RING

WIRE

OVER-

CURRENT

PROTECTION

R1a

R1b

RING/TEST

PROTECTION

Th1

Th3

Th2

TEST

RELAY

S1a

S1b

RING

RELAY

SLIC

RELAY

S3a

S2a

SLIC

PROTECTION

TISP5xxxH3BJ

Th4

Th5

SLIC

S3b

S2b

VBAT

TEST

EQUIP-

MENT

RING

GENERATOR

Figure 12. LINE CARD SLIC PROTECTION

PRODUCT INFORMATION

8

AI4XAA

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