{{tag>collection_mcmaster vendor_solitron type_wafer type_discrete type_discrete/transistor type_discrete/transistor/bjt year_1965 foundry_unknown tech_unknown}}


====== Source ======

eBay seller danfuboco.  Label is a little odd since that company makes milling machines.  Seller has info below although I don't really know how they arrived at that.  I don't know the actual year, marked date is approximate.

Seller description:
  Rare 1960's Solitron PNP Transistor Silicon Wafer 2 in.


====== Overview ======

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Front label
  CINCINNATI
  MILACRON
  CM NO. 672-1
  LOT NO. 61-807-257
  SUBS p___(ohm)-cm t___ mils
  1st EPI.
  p 34.4 (ohm)-cm t 57.2 um.
  2nd. EPI.
  p ___ (ohm)-cm t ___ um.
  
  TYPE (N/N+) P/P+ N/P/P+ P/N/N+
  N/P P/N P/N+ N/P+
  
  BDV. ___
  
Back label
  56XC109-95
  REJ-20
  P256-35

====== Wafer ======

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