JIS semiconductor designation

Japanese Industrial Standards (JIS) has standard JIS-C-7012 for semiconductor part numbers. The first digit denotes the p-n junction count ("3" may also denote a dual-gate FET); then follows the letter "S", then:

2nd letter Type of semiconductor
<none>Diode
Ahigh frequency PNP BJTs
Baudio frequency PNP BJTs
Chigh frequency NPN BJTs
Daudio frequency NPN BJTs
EDiode
FThyristor
GGunn diode
HUJT
JP-channel FETs (both JFETs and MOSFETs)
KN-channel FETs (both JFETs and MOSFETs)
MTRIAC
QLED
RRectifier
SSignal diode
TAvalanche diode
VVaricap
ZZener Diode

Then follows the Japan Electronics and Information Technology Industries Association's Electronic DEvice REgistration Center (JEITA-EDEREC)-assigned part number, optionally followed by suffixes (such as "A", "B", "C", or "R", "O", "BL", standing for "Red", "Orange", "Blue" etc.) to denote variants, such as tighter hFE (gain) groupings.[1][2]

Example: 2SD965, but sometimes the "2S" prefix is not marked on the package – a 2SD965 might only be marked "D965"; a 2SC1815 might be listed by a supplier as simply "C1815", thus possibly creating confusion with Pro Electron abbreviated markings, because a transistor marked "D965" might either be a 2SD965 or a BD965.

References

  1. Renesas Electronics Corporation (June 2004). "Small Signal Transistor Type Designation". Retrieved June 24, 2012.
  2. CliveTEC Electronic resources (September 9, 2004). "Transistor Data". Retrieved June 24, 2012.

See also