ELECTRONIC PROJECTS
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NPN SILICON TRANSISTORS

Last Modified: 14:02, 19 August 2008
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Below are the operating specifications of common NPN transistors - note that these specifications vary according to different manufacturers. Transistor gain given hFE is only an approximate value.
Transistor pin outs for low to medium power type transistors - viewed from below
TO-92
TO-92A

E C B
TO-92B

E B C
TO-92C

C B E
TO-18
B
EC
TO-39
B
EC
E-LINE

E C B
Device
Mftr.
Case style
VCE
VCB
VEB
IC
Ptot
hFE min.
fT
max. (V)
max. (V)
max. (V)
max. (mA)
(mW)
@ IC (mA)
MHz
2N2222A
CDIL
TO-18
30
60
5
800
500
100@150
250
2N3053
CDIL
TO-39
40
60
5
700
500
50@150
100
2N3704
CDIL
TO-92 (A)
30
50
5
600
625
100@50
100
2N3705
CDIL
TO-92 (A)
30
50
5
600
625
50@50
100
2N3904
TruSemi
TO-92 (B)
40
60
6
200
625
100@10
30
2N4401
TruSemi
TO-92 (B)
40
60
5
600
625
100@150
250
BC107
CDIL
TO-18
45
50
6
200
600
100@2
150
BC107B
CDIL
TO-18
45
50
6
200
600
200@2
150
BC108
CDIL
TO-18
25
30
5
200
600
100@2
150
BC108B
CDIL
TO-18
25
30
5
200
600
200@2
150
BC108C
CDIL
TO-18
25
30
5
200
600
420@2
150
BC109
CDIL
TO-18
25
30
5
200
600
200@2
150
BC109C
CDIL
TO-18
25
30
5
200
600
420@2
150
BC182
ONS
TO-92 (C)
50
60
6
100
350
120@2
150
BC182L
CDIL
TO-92 (A)
50
60
6
100
350
120@2
150
BC183L
CDIL
TO-92 (A)
30
45
6
100
350
120@2
150
BC184
CDIL
TO-92 (C)
30
45
6
100
350
250@2
150
BC184B
TruSemi
TO-92 (C)
30
45
6
100
350
240@2
150
BC184L
CDIL
TO-92 (A)
30
45
6
100
350
250@2
150
BC237B
TruSemi
TO-92 (C)
45
50
5
100
350
120@2
150
BC238B
CDIL
TO-92 (C)
25
30
5
100
350
200@2
150
BC337-16
NXP
TO-92 (C)
45
50
5
500
625
100@100
100
BC337-16
TruSemi
TO-92 (C)
45
50
5
800
625
100@100
210
BC337-25
NXP
TO-92 (C)
45
50
5
500
625
160@100
100
BC337-40
NXP
TO-92 (C)
45
50
5
500
625
250@100
100
BC517
FCH
TO-92 (C)
30
40
10
1000
600
30000@20
200
BC547B
CDIL
TO-92 (C)
45
50
6
100
500
200@2
150
BC548B
FCH
TO-92 (C)
30
30
6
100
500
220@2
150
BC548B
TruSemi
TO-92 (C)
30
30
5
100
500
110@2
300
BC549B
FCH
TO-92 (C)
30
30
5
100
625
240@2
150
BC549C
NXP
TO-92 (C)
30
30
5
100
500
420@2
100
MPSA42
FCH
TO-92 (B)
300
300
6
500
625
40@30
50
ZTX325
Zetex
E LINE
15
15
-
25
500
25@25
600
ZTX457
Zetex
E LINE
300
300
-
500
1000
50@0.05
75
ZTX614
Zetex
E LINE
100
100
-
800
1000
10K@0.5
100
Device
Mftr.
Case style
VCE
VCB
VEB
IC
Ptot
hFE min.
fT
max. (V)
max. (V)
max. (V)
max. (A)
(W)
@ IC (mA)
MHz
BC635
TruSemi
TO-92
45
45
5
1
1
40@150
100
BC637
CDIL
TO-92 (A)
60
60
5
1
0.8
40@150
200
BC639
CDIL
TO-92 (A)
80
80
5
1
0.8
40@150
200
BFX85
CDIL
TO-39
60
100
6
1
0.8
70@150
50
BFY50
CDIL
TO-39
35
80
6
1
0.8
30@150
60
BFY51
CDIL
TO-39
30
60
6
1
0.8
40@150
50
BFY52
CDIL
TO-39
20
20
6
1
0.8
60@150
50
ZTX1048A
Zetex
E LINE
17.5
50
5
4
1
300@1A
150
ZTX1051A
Zetex
E LINE
40
150
5
4
1
300@1A
155
ZTX1053A
Zetex
E LINE
75
150
5
3
1
300@1A
140
ZTX1055A
Zetex
E LINE
120
175
5
3
1
130@3A
130
ZTX450
Zetex
E LINE
45
60
5
1
1
100@150
150
ZTX451
Zetex
E LINE
60
80
5
1
1
150@150
150
ZTX453
Zetex
E LINE
100
120
5
1
1
40@150
150
ZTX651
Zetex
E LINE
60
80
5
2
1
100@500
140
ZTX653
Zetex
E LINE
100
120
5
2
1
100@500
140
ZTX689B
Zetex
E LINE
20
20
5
3
1.5
400@2A
150
ZTX690B
Zetex
E LINE
45
45
5
2
1.5
400@1A
150
ZTX851
Zetex
E LINE
60
150
6
5
1.2
100@2A
130
ZTX853
Zetex
E LINE
100
200
6
4
1.2
100@2A
130
HIGH POWER NPN

Transistor pin outs for high power type transistors - viewed from below
TO-126
B C E
TO-220
B C E
TO-218
B C E
TO-3
EC
B
Device
Mftr.
Case style
VCE
VCB
VEB
IC
Ptot
hFE min.
fT
max. (V)
max. (V)
max. (V)
max. (A)
(W)
@ IC
(MHz)
2N3055
TruSemi
TO-3
100
60
7
15
115
5@10A
3
2N3055H
-
TO-3
100
100
7
15
100
20@4A
2.5
2N3773
CDIL
TO-3
160
140
7
16
150
15@60A
-
2SC3264
Sanyo
MT-200
230
230
5
17
200
50@5A
3.5
2SC4382
Sanyo
TO-220
200
200
6
2
25
60@700A
15
2SC5200
Toshiba
TO-3P
230
230
5