Transistor Data

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Transistors

Index

Symbol.
Numbering System.
Pro-Electron Numbering System.
JEDEC Numbering System.
JIS Numbering System.

Symbol

NPN PNP

Transistor Number Systems
It is possible to determine details about a transistor from its part number. There are three systems that are in operation, namely the European based Pro-electron system, the American based JEDEC system and the Japanese JIS system.

Pro-Electron Numbering System

1^st Letter - specifies the semiconductor material	2^nd Letter - specifies the type of device	Serial number
A Germanium B Silicon C Gallium Arsenide R Compound Materials	A Diode, low power or signal B Diode, variable capacitance C Transistor, audio frequency low power D Transistor, audio frequency power E Diode, tunnel F Transistor, high frequency low power G Miscellaneous devices H Diode, sensitive to magnetism L Transistor, high frequency power N Photocoupler P Light detector Q Light emitter R Switching device, low power e.g. thyristor, diac, unijunction etc S Transistor, low power switching T Switching device power, e.g. thyristor, triac, etc. U Transistor, switching power W Surface acoustic wave device X Diode, multiplier, e.g. varactor Y Diode, rectifying Z Diode, voltage reference	The characters following the first two letters form the serial number for the device type. Those intended for domestic use have a three-figure number (100 - 999), those intended for commercial use normally have one letter and two figures (A10 - Z99)

JEDEC (Joint Electron Device Engineering Council)

1^st Number designates the type of device	2^{nd Number}	The following figures denote the device serial number	Suffix Optional
1 Diodes 2 Bipolar transistors 3 FET devices 4 OptoCoupler 5 OptoCoupler	N	Serial number of component yields no indication of function or spec. Since this is a serial number may provide insight into date.	A = low gain B = medium gain C = high gain

JIS (Japanese Industrial Standard)

1^st Number designates the type of device	2^nd Letters	The following figures denote the device serial number	Suffix Optional
1 Diodes 2 Bipolar transistors 3 FET devices	SA: PNP HF transistor SB: PNP AF transistor SC: NPN HF transistor SD: NPN AF transistor SE: Diodes SF: Thyristors SG: Gunn devices SH: UJT SJ: P-channel FET/MOSFET SK: N-channel FET/MOSFET SM: Triac SQ: LED SR: Rectifier SS: Signal diodes ST: Avalanche diodes SV: Varicaps SZ: Zener diodes	Serial number of component yields no indication of function or spec. Since this is a serial number may provide insight into date.	Suffix indicates that the type is approved for use by various Japanese organisations

This page last updated on 04-01-07 by CliveTEC

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