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Recent content by wayne tan

  1. W

    How do anti static bags work?

    Antistatic Bags. There is a lot of misconception with the term antistatic. It is not an electrical property of material, so measuing it with an ohm-meter or even a megohm-meter is just wrong. Antistatic is refered to as an ability to inhibit charge tribocharging by a material. In achieing this...
  2. W

    Conductive packaging, rubber shoes

    Re: conductive packaging "Conductive Pakaging" The silver looking packaging bags you mentioned could be the vapor barrier type that would keep your IC dry to prevent "pop-corn" when running the ICs through IR oven. The packaging material cosists of a buried metal layer which works as vapor...
  3. W

    Help Needed:Class 0 ESD safe wirebonding:Bond sequence,tips

    There could be two ESD failure modes with wire bonding: 1) Machine Model (MM)where the bonding tool carries static charges and discharges to the die or 2) Charged Device Model (CDM) or in this case some call it Charged Board Model (CBM) where the die or the PC board (plus the insultive chuck if...

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