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  1. Path: sparky!uunet!zaphod.mps.ohio-state.edu!saimiri.primate.wisc.edu!ames!sun-barr!sh.wide!wnoc-tyo-news!hitwide!hinocgw!hcrlgw92!harlgw92!motoyama
  2. From: motoyama@harl.hitachi (Hiroshi Motoyama)
  3. Newsgroups: sci.electronics
  4. Subject: Re: Mystery japanese transistor
  5. Message-ID: <MOTOYAMA.92Nov6164802@harlgw92.harl.hitachi>
  6. Date: 6 Nov 92 07:48:02 GMT
  7. References: <1992Oct29.204701.571@kth.se>
  8.     <1992Nov2.091321.5410@nessie.mcc.ac.uk> <govender.720858538@shannon>
  9. Sender: motoyama@harlgw92.harl.hitachi.co.jp
  10. Organization: Advanced Research Laboratory, Hitachi, Ltd
  11. Lines: 19
  12. In-reply-to: govender@shannon.ee.wits.ac.za's message of 4 Nov 92 06:28:58 GMT
  13.  
  14.  
  15.    >look under 2SC3261. japanese transistors commonly omit the 2S prefix in 
  16.    >their markings.
  17.  
  18. Here is more information.
  19. In Japanese naming system,
  20.  
  21.    1S****   Semiconductor devices with two electrodes
  22.    2S****   Semiconductor devices with three electrodes
  23.      2SA****  NPN RF
  24.      2SB****  NPN AF
  25.      2SC****  PNP RF
  26.      2SD****  PNP AF
  27.      2SJ****  N-channel FET   
  28.      2SK****  P-channel FET
  29.    3S****   Semiconductor devices with four electrodes  
  30.      
  31. --
  32. Hiroshi Motoyama
  33.