HP9100 EHT oscillator transistor - test-drb@ccmp.vtda.org

21 Dec 1998

More info:
...

Alas the only number I have for it is the HP custom number, 1854-0322.  
   HP says "Q1 -- 1854-0322 -- Quantity 1 --- TSTR: NPN, Si --- (Mfr) 86658 ---
obd"
...

  The notes say that "obd" means "order by description". There's a
list of manufacturer's code in the manual but 86658 isn't listed. ???  

  I think that manufacturer's code may be wrong in the manual. I can't find
any other parts with that code but I did find that a lot of the 1854-xxxx
transistors are made by 86684.  I looked that up, it's RCA, Electronics
Components and Devices Division in Harrison, NJ.

  Joe