Introduction

T his reference provides the specifications for the most common transistors used in small electronic circuits and prototyping. The newest release of this reference can be found on the SourcForge.com site.

Note: This version does not have all part number comments filled. Future versions will be updated with more information.

BC Series  (click part# for comments)

Type Package NPN/PNP Ic (mA) Pd (mW) Vce (max) Vcb (max) hfe @ Ic FT (MHz) Complement Replacement Application
BC107 TO-18 NPN 100 300 45 50 110-450 2 300 BC177   General
BC108 TO-18 NPN 100 300 20 30 110-800 2 300     General
BC109 TO-18 NPN 100 300 20 30 200-800 2 300     General
BC109C TO-18 NPN 100 300 20 30 420-800 2 300     General
BC142 TO-39 NPN 1.0A 800 60 80 20-60 200 80 BC143   High Pwr Audio
BC143 TO-39 PNP 1.0A 800 60 60 20-40 300 - BC142   High Pwr Audio
BC177 TO-18 PNP 100 300 45 50 75-260 2 150 BC107   High Pwr Audio
BC178 TO-18 PNP 100 300 25 30 75-500 2 150     High Pwr Audio
BC179 TO-18 PNP 100 300 20 25 125-500 2 150     High Pwr Audio
BC182L TO-92 NPN 100 350 50 60 120-500 2 150 BC212L   High Pwr Audio
BC183L TO-92 NPN 100 350 30 45 120-800 2 150 BC213L   High Pwr Audio
BC184L TO-92 NPN 100 350 30 45 250-800 2 150 BC214L   High Pwr Audio
BC212L TO-92 PNP 100 350 50 60 60 2 280 BC182L   High Pwr Audio
BC213L TO-92 PNP 100 350 30 45 80-400 2 350 BC183L   High Pwr Audio
BC214L TO-92 PNP 100 350 30 45 140-600 2 320 BC184L   High Pwr Audio
BC307 TO-92 PNP 100 350 45 50 180-460 2 280     Amplifier
BC327 TO-92 PNP 500 625 45 50 100-600 100 100 BC337   Audio
BC328 TO-92 PNP 500 625 25 30 100-600 100 100     Audio
BC337 TO-92 NPN 500 625 45 50 100-600 100 100     Audio
BC338 TO-18 NPN 500 625 25 30 100-600 100 100     Audio
BC546 TO-92 NPN 100 500 65 80 110-450 2 300     High Pwr Audio
BC547 TO-92 NPN 100 500 45 50 110-800 2 300     High Pwr Audio
BC548 TO-92 NPN 100 500 30 30 110-800 2 300     High Pwr Audio
BC549 TO-92 NPN 100 500 30 30 200-800 2 300     Low Noise
BC556 TO-92 NPN 100 500 65 80 75-475 2 200     High Pwr Audio
BC557 TO-92 PNP 100 500 45 50 75-800 2 200     High Pwr Audio
BC558 TO-92 PNP 100 500 30 30 75-800 2 200     High Pwr Audio
BC559 TO-92 PNP 100 500 30 30 125-800 2 200     High Pwr Audio
BC639 TO-92 NPN 1.0A 1.0W 80 100 40-250 150 130     Audio
BC640 TO-92 PNP 1.0A 1.0W 80 100 40-250 150 50     Audio

C Series  (click part# for comments)

Type Package NPN/PNP Ic (mA) Pd (mW) Vce (max) Vcb (max) hfe @ Ic FT (MHz) Complement Replacement Application
C1815 TO-92 NPN 400 600 70 70 120 - 200 -   High Pwr Audio
C2233 TO-220 NPN 4.0A 75W 300 300 25 - 4     High Current
C2330 T16 NPN 100 900 300 300 100 - 50     HV Video
C2482 T16 NPN 100 900 300 300 100 - 50     HV Video
C9012 TO-92 PNP 500 625 20 40 120 - 200     High Pwr Audio
C9013 TO-92 NPN 500 625 20 40 120 - 200     High Pwr Audio
C9014 TO-92 NPN 600 500 40 75 200 - 300     High Pwr Audio
C9015 TO-92 PNP 600 500 40 75 200 - 300     High Pwr Audio

2N Series  (click part# for comments)

Type Package NPN/PNP Ic (mA) Pd (mW) Vce (max) Vcb (max) hfe @ Ic FT (MHz) Complement Replacement Application
PN2222 TO-92 NPN 800 500 40 75 100-300 150 150 2907   Switching
2N2222 TO-18 NPN 800 500 40 75 100-300 150 300 2907   Switching
2N2905 TO-39 PNP 600 600 40 60 100-300 150 200     Switching
2N2907 TO-39 PNP 600 400 40 60 100-300 150 200 2N2222   Switching
2N3703 TO-92 PNP 200 300 30 50 30-150 50 100 2N3705   High Pwr Audio
2N3704 TO-92 NPN 800 360 30 50 100-300 50 100 2N3702   High Pwr Audio
2N3904 TO-92 NPN 200 350 40 60 100-300 10 300 2N3906   Switching
2N3906 TO-92 PNP 200 350 40 40 100-300 10 250 2N3904   Switching
2N4401 TO-92 NPN 600 350 40 60 100-300 150 250 2N4403   High Pwr Audio
2N4403 TO-92 PNP 600 350 40 40 100-300 150 200 2N4401   High Pwr Audio
2N5401 TO-92 PNP 600 625 150 160 60-240 10 100     Amplifier

European (EECA) Part# Prefix

Prefix class Type and Usage Example Equivalent Reference
AC Germanium small-signal transistor AC126 NTE102A Datasheet
AD GermaniumAF power transistor AD133 NTE179 Datasheet
AF Germanium small-signal RF transistor AF117 NTE160 Datasheet
AL Germanium RF power transistor ALZ10 NTE100 Datasheet
AS Germanium switching transistor ASY28 NTE101 Datasheet
AU Germanium power switching transistor AU103 NTE127 Datasheet
BC Silicon, small-signal transistor ("General") BC548 2N3904 Datasheet
BD Silicon, power transistor BD139 NTE375 Datasheet
BF Silicon, RF (high frequency) BJT or FET BF245 NTE133 Datasheet
BS Silicon, switching transistor (BJT or MOSFET) BS170 2N7000 Datasheet
BL Silicon, high frequency, high power (for transmitters) BLW60 NTE325 Datasheet
BU Silicon, high voltage (for CRT horizontal deflection circuits) BU2520A NTE2354 Datasheet
CF Gallium Arsenide small-signal Microwave transistor (MESFET) CF739 Datasheet
CL Gallium Arsenide Microwave power transistor (FET) CLY10 Datasheet