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ELECTRONIC PROJECTS
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TEACHING RESOURCES
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HELP
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NPN SILICON TRANSISTORS
Last Modified: 14:02, 19 August 2008
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| On this page
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On other pages
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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. |
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| Transistor pin outs for low to medium power type transistors - viewed from below |
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TO-92
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TO-92A
E C B

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TO-92B
E B C

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TO-92C
C B E

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TO-18
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B
E C
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TO-39
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B
E C
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E-LINE
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E C B
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Device
|
Mftr.
|
Case style
|
VCE
|
VCB
|
VEB
|
IC
|
Ptot
|
hFE min.
|
fT
|
|
|
|
max. (V)
|
max. (V)
|
max. (V)
|
max. (mA)
|
(mW)
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@ IC (mA)
|
MHz
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| 2N2222A |
CDIL
|
TO-18
|
30
|
60
|
5
|
800
|
500
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100@150
|
250
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| 2N3053 |
CDIL
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TO-39
|
40
|
60
|
5
|
700
|
500
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50@150
|
100
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| 2N3704 |
CDIL
|
TO-92 (A)
|
30
|
50
|
5
|
600
|
625
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100@50
|
100
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| 2N3705 |
CDIL
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TO-92 (A)
|
30
|
50
|
5
|
600
|
625
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50@50
|
100
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| 2N3904 |
TruSemi
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TO-92 (B)
|
40
|
60
|
6
|
200
|
625
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100@10
|
30
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| 2N4401 |
TruSemi
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TO-92 (B)
|
40
|
60
|
5
|
600
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625
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100@150
|
250
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| BC107 |
CDIL
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TO-18
|
45
|
50
|
6
|
200
|
600
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100@2
|
150
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| BC107B |
CDIL
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TO-18
|
45
|
50
|
6
|
200
|
600
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200@2
|
150
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| BC108 |
CDIL
|
TO-18
|
25
|
30
|
5
|
200
|
600
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100@2
|
150
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| BC108B |
CDIL
|
TO-18
|
25
|
30
|
5
|
200
|
600
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200@2
|
150
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| BC108C |
CDIL
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TO-18
|
25
|
30
|
5
|
200
|
600
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420@2
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150
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| BC109 |
CDIL
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TO-18
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25
|
30
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5
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200
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600
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200@2
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150
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| BC109C |
CDIL
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TO-18
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25
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30
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5
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200
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600
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420@2
|
150
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| BC182 |
ONS
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TO-92 (C)
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50
|
60
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6
|
100
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350
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120@2
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150
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| BC182L |
CDIL
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TO-92 (A)
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50
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60
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6
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100
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350
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120@2
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150
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| BC183L |
CDIL
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TO-92 (A)
|
30
|
45
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6
|
100
|
350
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120@2
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150
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| BC184 |
CDIL
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TO-92 (C)
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30
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45
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6
|
100
|
350
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250@2
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150
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| BC184B |
TruSemi
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TO-92 (C)
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30
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45
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6
|
100
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350
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240@2
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150
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| BC184L |
CDIL
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TO-92 (A)
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30
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45
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6
|
100
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350
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250@2
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150
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| BC237B |
TruSemi
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TO-92 (C)
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45
|
50
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5
|
100
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350
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120@2
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150
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| BC238B |
CDIL
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TO-92 (C)
|
25
|
30
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5
|
100
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350
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200@2
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150
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| BC337-16 |
NXP
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TO-92 (C)
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45
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50
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5
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500
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625
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100@100
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100
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| BC337-16 |
TruSemi
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TO-92 (C)
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45
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50
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5
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800
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625
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100@100
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210
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| BC337-25 |
NXP
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TO-92 (C)
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45
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50
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5
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500
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625
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160@100
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100
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| BC337-40 |
NXP
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TO-92 (C)
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45
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50
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5
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500
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625
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250@100
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100
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| BC517 |
FCH
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TO-92 (C)
|
30
|
40
|
10
|
1000
|
600
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30000@20
|
200
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| BC547B |
CDIL
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TO-92 (C)
|
45
|
50
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6
|
100
|
500
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200@2
|
150
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| BC548B |
FCH
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TO-92 (C)
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30
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30
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6
|
100
|
500
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220@2
|
150
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| BC548B |
TruSemi
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TO-92 (C)
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30
|
30
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5
|
100
|
500
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110@2
|
300
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| BC549B |
FCH
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TO-92 (C)
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30
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30
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5
|
100
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625
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240@2
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150
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| BC549C |
NXP
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TO-92 (C)
|
30
|
30
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5
|
100
|
500
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420@2
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100
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| MPSA42 |
FCH
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TO-92 (B)
|
300
|
300
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6
|
500
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625
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40@30
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50
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| ZTX325 |
Zetex
|
E LINE
|
15
|
15
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-
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25
|
500
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25@25
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600
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| ZTX457 |
Zetex
|
E LINE
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300
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300
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-
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500
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1000
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50@0.05
|
75
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| ZTX614 |
Zetex
|
E LINE
|
100
|
100
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-
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800
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1000
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10K@0.5
|
100
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Mftr.
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Case style
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VCE
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VCB
|
VEB
|
IC
|
Ptot
|
hFE min.
|
fT
|
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|
max. (V)
|
max. (V)
|
max. (V)
|
max. (A)
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(W)
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@ IC (mA)
|
MHz
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| BC635 |
TruSemi
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TO-92
|
45
|
45
|
5
|
1
|
1
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40@150
|
100
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| BC637 |
CDIL
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TO-92 (A)
|
60
|
60
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5
|
1
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0.8
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40@150
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200
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| BC639 |
CDIL
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TO-92 (A)
|
80
|
80
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5
|
1
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0.8
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40@150
|
200
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| BFX85 |
CDIL
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TO-39
|
60
|
100
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6
|
1
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0.8
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70@150
|
50
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| BFY50 |
CDIL
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TO-39
|
35
|
80
|
6
|
1
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0.8
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30@150
|
60
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| BFY51 |
CDIL
|
TO-39
|
30
|
60
|
6
|
1
|
0.8
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40@150
|
50
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| BFY52 |
CDIL
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TO-39
|
20
|
20
|
6
|
1
|
0.8
|
60@150
|
50
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| ZTX1048A |
Zetex
|
E LINE
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17.5
|
50
|
5
|
4
|
1
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300@1A
|
150
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| ZTX1051A |
Zetex
|
E LINE
|
40
|
150
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5
|
4
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1
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300@1A
|
155
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| ZTX1053A |
Zetex
|
E LINE
|
75
|
150
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5
|
3
|
1
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300@1A
|
140
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| ZTX1055A |
Zetex
|
E LINE
|
120
|
175
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5
|
3
|
1
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130@3A
|
130
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| ZTX450 |
Zetex
|
E LINE
|
45
|
60
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5
|
1
|
1
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100@150
|
150
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| ZTX451 |
Zetex
|
E LINE
|
60
|
80
|
5
|
1
|
1
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150@150
|
150
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| ZTX453 |
Zetex
|
E LINE
|
100
|
120
|
5
|
1
|
1
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40@150
|
150
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| ZTX651 |
Zetex
|
E LINE
|
60
|
80
|
5
|
2
|
1
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100@500
|
140
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| ZTX653 |
Zetex
|
E LINE
|
100
|
120
|
5
|
2
|
1
|
100@500
|
140
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| 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
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| ZTX853 |
Zetex
|
E LINE
|
100
|
200
|
6
|
4
|
1.2
|
100@2A
|
130
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| HIGH POWER NPN
Transistor pin outs for high power type transistors - viewed from below
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TO-126
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B C E 
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TO-220
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B C E 
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TO-218
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B C E 
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TO-3
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E C
B
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Device
|
Mftr.
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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
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