AN2064 - APPLICATION NOTE

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5. US market telecom protection tests

A PCB has been developed according to the criteria established earlier (see figure 9). These boards,

equipped with two fuses TCP1.25A from Cooper Bussmann and two TRISILs SMP100MC-270, have been

tested.

The schematic of these tested boards is given in the figure 10 and performed tests were based on Telcor-

dia (Bellcore) GR1089 for both lightning and power mains disturbances.

. Lightning surge 10/1000µs +/-1kV 100A (25 pulses in each polarity)

. Lightning surge 2/10µs +/-2.5kV and 5kV 500A (10 pulses in each polarity)

. Power mains disturbance 600V 3A 1.1s

. Power mains disturbance 277V 25A 15mn

. Power mains disturbance 600V 60A 5s

Figure 9: Picture of the developed board

Figure 10: Test board diagram

SMP100MC-270

Tip L

Gnd

Tip S

Gnd

Ring L

Ring S

SMP100MC-270

Fuse TCP 1.25A

Fuse TCP 1.25A

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