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MIL-PRF-19500-412 Semiconductor Device, Transistor, Npn, Silicon, Power, Types 2N3846, 2N3846T1, 2N3846T3, 2N3847, 2N3847T1, And 2N3847T3, Jan, Jantx, Jantxv, And JansThis specification covers the performance requirements for NPN, silicon, power transistors. Four levels of product assurance are provided for each device type as specified in MIL-PRF-19500.

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MIL-PRF-19500/412F
Dimensions
Ltr
Inches
Millimeters
Min
Max
Min
Max
BL
.535
.545
13.59
13.84
CH
.249
.260
6.32
6.60
LD
.035
.045
0.89
1.14
LL
.510
.570
12.95
14.48
LO
.150 BSC
3.81 BSC
LS
.150 BSC
3.81 BSC
MHD
.139
.149
3.53
3.78
MHO
.665
.685
16.89
17.40
TL
.790
.800
20.07
20.32
TT
.040
.050
1.02
1.27
TW
.535
.545
13.59
13.84
Term 1
Base
Term 2
Collector
Term 3
Emitter
NOTES:
1.  Dimensions are in inches.
2.  Millimeters are given for general information only.
3.  Methods used for electrical isolation of the terminals feedthroughs shall employ materials that contain a
minimum of 90 percent AL2O3 (ceramic).
4.  All terminals are isolated from case.
5.  In accordance with ASME Y14.5M, diameters are equivalent to φx symbology.
FIGURE 2. Dimensions and configuration for 2N3846T1 and 2N3847T1 (TO-254AA).
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