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What fuse is this?

Discussion in 'General Electronics Discussion' started by SystemX, Jan 15, 2016.

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  1. SystemX

    SystemX

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    Jan 15, 2016
    Guys,

    I mainly maintain some circuit-switched telephony equipment from the 70/80s that is still widely used is the network today. We've a fuse on the boards that fail, but we have to send the board off for expensive repair and long turn-around times when we could just change it ourselves. The issue is we can't find the fuse online anywhere and any old maintenance paperwork we've got doesn't give any information on them.

    DPQ surge-protection fuses.jpg

    There's a pair of fuses in each component and we've run increasing currents through one with a scope to see break-times and think they're fast-acting, but does anybody have any idea where we'd be able to find components like this or a better idea about the fuse specifications?

    The manufacturer was previously GPT/Plessey, but I don't think we can ask the current repair agent about it due to contractual stuff...

    Thanks for any help.
     
  2. KJ6EAD

    KJ6EAD

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    Aug 13, 2011
  3. SystemX

    SystemX

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    0
    Jan 15, 2016
    That's a shame - we'll have to try and find a suitable replacement we can use.

    Thanks for your help.
     
  4. CDRIVE

    CDRIVE Hauling 10' pipe on a Trek Shift3

    4,960
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    May 8, 2012
    Check with Digikey for a substitute. Perhaps a "Picofuse"?

    Chris
     
  5. SystemX

    SystemX

    3
    0
    Jan 15, 2016
    Eaton/Cooper Bussmann's technical people are looking at a replacement for us, but I'll ask Digikey too.

    Ta for the info.
     
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