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Counterfeit Hitachi chips - is this really possible?

Discussion in 'Electronic Design' started by Paul Burke, Jan 4, 2007.

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  1. Paul Burke

    Paul Burke Guest

  2. Peter

    Peter Guest

    The following is the text of a fault report I have just typed up for a
    batch of H8/323 chips that have come in but don't work at all:
    What amazes me is that it would be worth somebody's while to
    manufacture bogus devices. This was a 3000 piece batch. This is quite
    an unusual part, discontinued around 2001 by Hitachi and circulating
    fairly freely on the "we can get you discontinued parts" second tier
    distributor circuit in the USA and elsewhere.

    Many years ago I did some ASIC design and one could get those kinds of
    quantities made, just about, but this kind of thing suggests a well
    geared up operation (I don't know the source but most likely in the
    Far East) which tries to make a fast buck, then fold up (because the
    con will be immediately discovered) and start under another name.

  3. A few possibilities:

    Some OEM asked Hitachi to make a bunch of these chips, but with an
    altered pinout, in order to get better grounding or whatnot. or it
    would save them 5 cents per PC board if the data lines didnt have to
    cross over.

    They were rejects from final testing at Hitachi. They went into the
    metal recycling barrel, but somebody rescued them and ran them thru
    the silk-screen machine at night.

    Many years ago there was a place in Lynn, Mass called "Poly Paks" that
    would sell you a polyethylene bag of IC's at $1 for 8 IC's. This was
    when a 7404 cost $3. What they mentioned only in the very fine print
    was that these chips were all rejects from some production line. For
    example their bag of LED's would all be off-center, dim, or have
    bubbles in the epoxy. Maybe your IC's came from their oriental
  4. Plenty of counterfeit chips on the world market for the unwary!!!
  5. Racist!
    And 'yes' it IS possible.
    "We always learn." a Hassidic proverb.
    Years ago, I work in aerospace electronics and the password for
    components is "MILSPEC" with the manufacturers and parts in small
    approved list, with prices accordingly higher, with papers signed
    certifying the "one and only truth" on delivery.
    So a shippment of few thousand components arrives and they fail
    misserable on incoming tests. Strange as we use this factory for years
    and did not have problems before.
    So we cut one component and we find that there is NO silicon chip inside?!
    Telex, no fax yet, we get permission to cut few more, S.O.S. (Same Old
    Shit) no silicon chips in any of them.
    Few days later express airmail delivery of our order arrived with a
    prayer to keep it reasonable quiet. So no name of respectable "Yankee"

    Have fun.

  6. SNIP
    I apologise for saying 'china' . One can find crooks anywhere in the world.
    It was mentioned by the OP though...
    My particular knowledge of a similar thing came from a ( apparently)
    reputable USA supplier of obsolete HC11 parts....
    I hope that redresses the balance.
  7. Phil Allison

    Phil Allison Guest


    ** With rare exceptions - they don't.

    Counterfeit semis are created by altering the labelling on some other semi
    in a similar package.

    This allows old, unsellable, reject or low cost parts to be traded as
    whatever the market needs now.

    See this URL for a few examples of the "craft" :

    ........ Phil
  8. Peter

    Peter Guest

    This is unlikely, as a) Hitachi would not have marked them with the
    normal P/N or b) they would have been the same package as the normal
    parts, not approx 0.5mm bigger.

    This is such a specialised chip that I think this counterfeit
    operation was done to fulfill this particular requirement, of only a
    few thousand chips at USD 7 each.
  9. Peter

    Peter Guest

    you posted a blank response :)
  10. Phil Allison

    Phil Allison Guest


    ** Cos he had nothing to say ?

    ...... Phil
  11. Empty inside like the bogus chips.
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