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File No. 112 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __
DCl(]5LJD
Solid State
Division
Power Transistors
40250,40250V1*,40251
RCA-40250, 40250Vl, and 40251 are "HOMETAXIAL"-
BASE diffused-junction, silicon n-p-n transistors in-
tendedfora wide variety of intermediate- and high-power
applications. These transistors are especially suitable
for use in audio and inverter circuits in 12-volt mobile
radio and portable communications equipment.
Type 40250Vl, with an attached heat radiator, is in-
tended for those applications which require a rugged
transistor for mounting on a printed-circuit board. Tabs
are provided on the underside of the radiator for mount-
ing purposes and for making electrical connection to the
collector {which is connected internally to the mounting
flange of the TO-66 Package}.
.SILICON N-P-N
POWER TRANSISTORS
General·Purpose Types for
Industrial and Commercial Applications
* The "VI- suffix in the type number "40250VI- designates'
the first variant of the basic type 40250. The VI-version is a
type 40250 transistor with an attached heat radiator for free-
air operation.
• Designed to assure freedom from second breakdown in
class-A operation at maximum ratings
40250
• JEDEC TO·66 package
for mounting convenience
and positive heat-sink
contact
• VCEV = 50 V min.
• IT = 1.0 Mc/s typo
• R(sat} = 1 Q max.
40250Vl
o Heat-radiator package
with mounting tabs for
printed-circuit-board ap-
plication
• 5.8·W dissipation capa·
bility (at 25°C Iree·air
temperature)
• VCEV = 50 V min.
• IT = 1.0 Mc/s typo
• R(sat) = 1 Q max.
40251
• High.dissipation capability - 117 Wmax.
• VCEV = 50 V min.
• R(sat) = 0.1875 Q max.
• IT = 0.5 Mc/s typo
,.. ~"C"?
I
40250
(JEDEC TD·66)
40251
(JEDEC TD· 3)
40250VI
(JEDEC TO· 66
WITH HEAT RADIATOR)
Absolute·Maximum Values:
MAXIMUM RATINGS
COLLECTOR-TO-BASE VOLTAGE, VCBO
COLLECTOR-TO-EMITTER VOLTAGE:
'With 1.5 volts of reverse bias. VCEV ..•.••.••••••••.•••
With base open, VCEO .: ••••••.•••.••.•.•.••••••.•
EMITTER-TO-BASE VOLTAGE. VEBO •.••••••..•••••••..
COLLECTOR CURRENT. IC • . . . . • • . • . . . • • . . . . • • . • . • •
BASE CURRENT. IB • . . • • . • • • • • • . • • • . . • • • . • • • . • . • • • •
TRANSISTOR DISSIPATION. PT:
At case temperatures up to 25°C . . • • . • . • • . • . • • . • • • . • . .
At free-air temperatures up to 25°C • • , ..• , .• , • , . , •.....
At temperatures above 25°C •. '.' .• , . , ... , , ... , ... , .. ,
TEMPERATURE RANGE:
Storage & Operating (Junction), , , • , ....•••• , ..•.•... , .
PIN TEMPERATURE (During soldering):
At distances ~ 1/32 in. from seating plane for 10 s max. , • , , ..
40250
50
40250V1
50
·}0251
50
50 50 50
40 40 40
55
4 4 15
22 7
29
See Fig.3
5.8
See Fig.4
117
S('(> Fig.5
~--------65 to200------~~
__- - - - 235 - - - - - - -
v
\'
V
\'
A
A
w
Vi
6-66 391

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40250, 40250V1, 40251 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ File No. 112
ELECTRICAL CHARACTERISTICS
Case Temperature ITCI of 2SoC Unless Otherwise Specified
Characteristic
Collector-Cutoff Current
At TC = 150° C
Emitter-Cutoff Current
DC Forward-Current
Transfer Ratio
Collector-ta-Base
Breakdown Voltage
Collector-ta-Emitter
Breakdown Voltage
Collector-to-Emitter
Sustaining Voltage
Emitter-ta-Base
Breakdown Voltage
Base-to-Emitter Voltage
Collecto....to-Emitter
Saturation Voltage
Power Rating Test
Thermal Resistance:
Junction-lo-Case
Junction-to-Free-Air
Symbol
ICBO
ICEV
ICBO
ICEV
lEBO
hFE
BVCBO
BVCEV
VCEo'sus)
BVEBO
VBE
VCE(sat)
PRT
eJ_C
eJ-FA
DC
Collector
Volts
VCB. VCE
30
40
30
40
4
4
4
4
39
TEST CONDITIONS
DC
Emitter
or Base
Volts
DC
Current
(Amperes)
VEB VBE IC IE IB
0
-1.5
0
-1.5
50
1.5
8
0.05
0.1
-1.5 0.05
-1.5 0.1
0.1
0.2
0 0.005
0 0.0l
1.5
8
1.5 0.15
8 0.8
3
LIMITS
Types
40250
40250Vl
Type
40251
Min. Max. Min. Max.
- 1--
- -- 2
-5--
- - - 10
- 5 - 10
- -25 100
- - 15 60
50
-
--
-
50
--
--50 - -
- - 50
4-0
-
-
-
40
--
-5
-
-
-
5
--
--
-2.2
--
-
2.2
--
-1.5
--
-
1.5
- -- 1
6.0 (max.)
40250
-
1.5
- -30 (max.)
40250Vl
Units
rnA
rnA
rnA
rnA
rnA
V
V
V
V
V
V
s
°C/W
°C/W
TYPICAL AUDIO·AMPLIFIER CIRCUIT
FOR TY PE 40250
Vee· 13.7 V.
TYPICAL INVERTER CIRCUIT
EMPLOYING A PAIR OF TYPE 40251',
'NPUT o--J~--"-_L~
(~~~
100I'F
IMPEDANCE)
20n
TYPE
40250
,n
92CS-12562
Distortion = 6.5% at POUT = 4 W
= 2% at POUT = 400 mW, f = 1 kc/s
Flg.l
",
Circuit Efficiency = 82%
at P,N = 110 W, f = 3.5 kc/s
T 1:' rJ2r,: tlfr0~~~s~:~~~;ion
(Allen·Bradley T3000H l06B),
"2 R0-3 material or equivalent.
50n Pri: 16 turns, No.20 wire, c.t.
Feedback Winding: 8 turns,
No.22 wire, c.t.
Vee or 13.7 V
92CS-I2563
392

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File No. 112 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 40250, 40?50V1, 40251
DISSIPATION DERATING CURVE
FOR TYPE 40250
50 100 150
CASE TEMPERATURE (Te)-aC
Fig.3
200
92CS-13005R1
DISSIPATION DERATING CURVE
FOR TYPE 402S0Vl
TYPICAL OPERATION CHARACTERISTICS
FOR TYPES 40250 & 402S0Vl
COLLECTOR-lO-EMITTER VOLTAGE (VCE)a4V
~2oo
T
Q
~ 160-
I
J.2~'~" - -
~
.. ,.I!'
~'"12Or-- --.- -'<:
rS'
·C
. f".
i I-- ~~
il
I
BOre!l,l>'
:i1
!e
V
40
\
u
00
2 4 ••
2 4 6•
2 4 6•
2
0.001
0.01 0.1
COLLECTOR CURRENT (ICI-A
10
Fig.6
92CS-12564RI
i
l-
ii 5
!
ill 4
o
o
-100
-50 0
50 100 150 200
FREE-AIR TEMPERTURE (TFA)--C
Fig.4
92CS-13373
DISSIPATION DERATING CURVE
FOR TYPE 40251
15
BASE - TO-EMITTER VOLTAGE (VSEI-V
Fig.7
92CS-I2.305R1
o
-100 -50
o 50 100 150 200
CASE TEMPERATURE (TC)--C
Fig.S
92CS-13031R1
, Fig.S
92CS-I2325R1
393

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40250, 40250V1, 40251 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ File No. 112
TYPICAL OPERATION CHARACTERISTICS
FOR TYPE 40251
COLLECTOR-TO-EMITTER VOLTAGE{VCE).4V
~ "I..
5 -1---
0
ii'"l'
!gl!
601I----I1-"-,-~~P~"'~~~,.'/.~
f-:~
40
c..;J~
a
~ 20
~
g0
O,Or
2
4 ,8
0.1
2
4 ,8
COLLECTOR CURRENT CIC)-A
Fig.9
"'
'\.
2 4 68
10
92CS-12565RI
BASE-TO-EMITTER YOLTAGE(VB£l-V
92CS-l2307RI
Fig.l0
394
I
BASE-YO-EMITTER VOLTAGE(VBE)-V
Fig.ll
92CS-12326R1
TERMINAL CONNECTIONS
FOR TYPES 40250, 40250Vl, & 40251
Pin 1 - Base
Pin 2 - Emitter
Flange, Case - Collector (For 40250 & 40251)
Heat Radiator - Collector (For 40250Vl)