September 20, 2009

Transistor codes..

NPN transistors
CodeStructureCase
style
IC
max.
VCE
max.
hFE
min.
Ptot
max.
Category
(typical use)
Possible
substitutes
BC107NPNTO18100mA45V110300mWAudio, low powerBC182 BC547
BC108NPNTO18100mA20V110300mWGeneral purpose, low powerBC108C BC183 BC548
BC108CNPNTO18100mA20V420600mWGeneral purpose, low power
BC109NPNTO18200mA20V200300mWAudio (low noise), low powerBC184 BC549
BC182NPNTO92C100mA50V100350mWGeneral purpose, low powerBC107 BC182L
BC182LNPNTO92A100mA50V100350mWGeneral purpose, low powerBC107 BC182
BC547BNPNTO92C100mA45V200500mWAudio, low powerBC107B
BC548BNPNTO92C100mA30V220500mWGeneral purpose, low powerBC108B
BC549BNPNTO92C100mA30V240625mWAudio (low noise), low powerBC109
2N3053NPNTO39700mA40V50500mWGeneral purpose, low powerBFY51
BFY51NPNTO391A30V40800mWGeneral purpose, medium powerBC639
BC639NPNTO92A1A80V40800mWGeneral purpose, medium powerBFY51
TIP29ANPNTO2201A60V4030WGeneral purpose, high power
TIP31ANPNTO2203A60V1040WGeneral purpose, high powerTIP31C TIP41A
TIP31CNPNTO2203A100V1040WGeneral purpose, high powerTIP31A TIP41A
TIP41ANPNTO2206A60V1565WGeneral purpose, high power
2N3055NPNTO315A60V20117WGeneral purpose, high power
Please note: the data in this table was compiled from several sources which are not entirely consistent! Most of the discrepancies are minor, but please consult information from your supplier if you require precise data.
PNP transistors
CodeStructureCase
style
IC
max.
VCE
max.
hFE
min.
Ptot
max.
Category
(typical use)
Possible
substitutes
BC177PNPTO18100mA45V125300mWAudio, low powerBC477
BC178PNPTO18200mA25V120600mWGeneral purpose, low powerBC478
BC179PNPTO18200mA20V180600mWAudio (low noise), low power
BC477PNPTO18150mA80V125360mWAudio, low powerBC177
BC478PNPTO18150mA40V125360mWGeneral purpose, low powerBC178
TIP32APNPTO2203A60V2540WGeneral purpose, high powerTIP32C
TIP32CPNPTO2203A100V1040WGeneral purpose, high powerTIP32A
Please note: the data in this table was compiled from several sources which are not entirely consistent! Most of the discrepancies are minor, but please consult information from your supplier if you require precise data.

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