lead in IC's

Discussion in 'General Electronics Chat' started by aamirali, Apr 5, 2013.

  1. aamirali

    Thread Starter Member

    Feb 2, 2012
    415
    1
    From where does Pb comes in IC. Like the are developed on Si wafer with impurities,
    then ouer connections & packaging. Which part of it contain Pb. Even ROHs allows some traces of Pb in specs.
     
  2. GopherT

    AAC Fanatic!

    Nov 23, 2012
    6,059
    3,823
    The "tinned" leads. The leads are really copper with a tin/lead alloy over them. There is no lead intentionally added to the semiconductor / silicon portion of the chip.
     
  3. mcgyvr

    AAC Fanatic!

    Oct 15, 2009
    4,771
    971
    Really hard to find (or get) and IC's now that aren't ROHS.
    The lead is (or was) from the plating on the pins of the IC.
     
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