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AMC1200: AMC1200B would be a better surge solution?

Part Number: AMC1200

Hi team,
My customer is having difficulties with the surge testing and I’d like to ask your advices.

They are using AMC1200 for the surge test, ±10KV (between L-FG) .
AMC1200 passed the test with 4KV, but with 10KV, the packaged damaged and experienced failure.
So, the customer is now wondering if using AMC1200B would be an option.

AMC1200B has 250V better surge immunity. Would it be an effective solution for the above-mentioned surge test?
If there are any other measures against surge, I’d appreciate it.

Best regards,
Kurumi Hasegawa

  • Hi Kurumi,

    where do apply the Surge? Between the isolation barrier? Or at the input and output of AMC1200?


  • Hi Kurumi-san,

    Neither the AMC1200 or AMC1200B are rated to pass +/-10V surge testing, these devices are only rated for +/-6kV as per 7.3.2 IEC 61000-4-5 Ratings. 

    Can you tell me more about the customer's application? May I ask why such a large surge voltage is being applied to the device? 

    If the customer's information is sensitive, please send me an email offline and we can continue the conversation. 

  • Hi Kai-san,

    Thank you for the comment. The customer said it was L-FG, so I guess between inductor and frame ground.

    Hi Alex-san,

    Thank you for the reply.

    Let me send you an email on the detail.


    Best regards,

    Kurumi Hasegawa