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TVS2701: Clamp ±250V spike according to MIL-STD-1275E

user5220622
Prodigy 10 points
Part Number: TVS2701

Hi,

I am developing a device which need protection according to MIL-STD-1275E: everyspec.com/.../download.php

The device need to withstand a 100V surge and a ±250V spike. I have found a solution to withstand the 100V surge test, but I have not a solution to the ±250V spike test.

The voltage spike is described in MIL-STD-1275E:

There will be injected 50 spikes with one (1) second between each spike. The voltage is maximum 250V and energy content of a single spike is 2 Joules. The spike voltage will be inside the envelope shown in figure 7.

My question was if three TVS2701 can be connected in series to clamp the voltage down to 100V. I do not know how many Joule TVS2701 can dissipate without overheating.

A common mode choke might be used to smooth the spike...

Do you know another solution to withstand MIL-STD-1275E ±250V voltage spike?

  • 0
    TI__Genius 12410 points
    Hello,
    I do not believe connecting the device in series would be the way to dissipate this charge you would need to shunt it with the line this is being applied to.

    Do you know at what impedance this pulse is? For instance the IEC61000-4-5 Surge standard says it is a 2Ohm or 42Ohm impedance. Do you know what it would be for this pulse?