1
Motorola SmallSignal Transistors, FETs and Diodes Device Data
High Voltage Transistors
NPN Silicon
MAXIMUM RATINGS
Rating
Symbol
BF420
BF422
Unit
Collector Emitter Voltage
VCEO
300
250
Vdc
Collector Base Voltage
VCBO
300
250
Vdc
Emitter Base Voltage
VEBO
5.0
Vdc
Collector Current -- Continuous
IC
500
mAdc
Total Device Dissipation @ TA = 25
C
Derate above 25
C
PD
625
5.0
mW
mW/
C
Total Device Dissipation @ TC = 25
C
Derate above 25
C
PD
1.5
12
Watts
mW/
C
Operating and Storage Junction
Temperature Range
TJ, Tstg
55 to +150
C
THERMAL CHARACTERISTICS
Characteristic
Symbol
Max
Unit
Thermal Resistance, Junction to Ambient
R
q
JA
200
C/W
Thermal Resistance, Junction to Case
R
q
JC
83.3
C/W
ELECTRICAL CHARACTERISTICS
(TA = 25
C unless otherwise noted)
Characteristic
Symbol
Min
Max
Unit
OFF CHARACTERISTICS
Collector Emitter Breakdown Voltage(1)
(IC = 1.0 mAdc, IB = 0)
BF420
BF422
V(BR)CEO
300
250
--
--
Vdc
Collector Base Breakdown Voltage
(IC = 100
m
Adc, IE = 0)
BF420
BF422
V(BR)CBO
300
250
--
--
Vdc
Emitter Base Breakdown Voltage
(IE = 100
m
Adc, IC = 0)
BF420
BF422
V(BR)EBO
5.0
5.0
--
--
Vdc
Collector Cutoff Current
(VCB = 200 Vdc, IE = 0)
BF420
BF422
ICBO
--
--
0.01
--
Adc
Emitter Cutoff Current
(VEB = 5.0 Vdc, IC = 0)
BF420
BF422
IEBO
--
--
100
--
nAdc
1. Pulse Test: Pulse Width
v
300
m
s; Duty Cycle
v
2.0%.
Order this document
by BF420/D
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
BF420
BF422
CASE 2904, STYLE 14
TO92 (TO226AA)
1
2
3
Motorola, Inc. 1996
COLLECTOR
2
3
BASE
1
EMITTER
BF420 BF422
2
Motorola SmallSignal Transistors, FETs and Diodes Device Data
ELECTRICAL CHARACTERISTICS
(TA = 25
C unless otherwise noted) (Continued)
Characteristic
Symbol
Min
Max
Unit
ON CHARACTERISTICS
DC Current Gain
(IC = 25 mAdc, VCE = 20 Vdc)
BF420
BF422
hFE
50
50
--
--
--
Collector Emitter Saturation Voltage
(IC = 20 mAdc, IB = 2.0 mAdc)
VCE(sat)
--
0.5
Vdc
Base Emitter Saturation Voltage
(IC = 20 mAdc, IB = 2.0 mAdc)
VBE(sat)
--
2.0
Vdc
SMALL SIGNAL CHARACTERISTICS
Current Gain -- Bandwidth Product
(IC = 10 mAdc, VCE = 10 Vdc, f = 20 MHz)
fT
60
--
MHz
Common Emitter Feedback Capacitance
(VCB = 30 Vdc, IE = 0, f = 1.0 MHz)
Cre
--
1.6
pF
BF420 BF422
3
Motorola SmallSignal Transistors, FETs and Diodes Device Data
Figure 1. DC Current Gain
IC, COLLECTOR CURRENT (mA)
200
1.0
2.0
3.0
5.0
7.0
10
20
30
50
70
100
50
30
20
h
FE
, DC CURRENT
GAIN
TJ = +125
C
25
C
55
C
VCE = 10 Vdc
100
C, CAP
ACIT
ANCE (pF)
Figure 2. Capacitances
VR, REVERSE VOLTAGE (VOLTS)
0.2
100
50
20
1.0
Ccb
10
2.0
5.0
0.5
1.0
2.0
5.0
10
20
50
100
200
Ceb
Figure 3. CurrentGain -- Bandwidth Product
IC, COLLECTOR CURRENT (mA)
100
70
50
30
20
10
7.0
5.0
3.0
2.0
100
70
50
30
20
10
TJ = 25
C
VCE = 20 V
f = 20 MHz
f
, CURRENTGAIN -- BANDWIDTH PRODUCT
(MHz)
T
1.0
IC, COLLECTOR CURRENT (mA)
Figure 4. "On" Voltages
V
, VOL
T
AGE (VOL
TS)
1.4
0
TJ = 25
C
VBE(on) @ VCE = 10 V
VCE(sat) @ IC/IB = 10
VBE(sat) @ IC/IB = 10
1.2
1.0
0.8
0.6
0.4
0.2
100
70
50
30
20
10
7.0
5.0
3.0
2.0
1.0
VCE, COLLECTOREMITTER VOLTAGE (VOLTS)
I C
, COLLECT
OR CURRENT
(mA)
MPSA43
Figure 5. Maximum Forward Bias
Safe Operating Area
CURRENT LIMIT
THERMAL LIMIT
(PULSE CURVES @ TC = 25
C)
SECOND BREAKDOWN LIMIT
MPSA42
100
s
1.0 ms
TC = 25
C
TA = 25
C
CURVES APPLY
BELOW RATED VCEO
500
0.5
1.0
2.0
5.0
10
20
50
100
200
100
50
20
10
5.0
2.0
1.0
0.5
200
500
10
s
100 ms
BF420 BF422
4
Motorola SmallSignal Transistors, FETs and Diodes Device Data
PACKAGE DIMENSIONS
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. CONTOUR OF PACKAGE BEYOND DIMENSION R
IS UNCONTROLLED.
4. DIMENSION F APPLIES BETWEEN P AND L.
DIMENSION D AND J APPLY BETWEEN L AND K
MINIMUM. LEAD DIMENSION IS UNCONTROLLED
IN P AND BEYOND DIMENSION K MINIMUM.
R
A
P
J
L
F
B
K
G
H
SECTION XX
C
V
D
N
N
X X
SEATING
PLANE
DIM
MIN
MAX
MIN
MAX
MILLIMETERS
INCHES
A
0.175
0.205
4.45
5.20
B
0.170
0.210
4.32
5.33
C
0.125
0.165
3.18
4.19
D
0.016
0.022
0.41
0.55
F
0.016
0.019
0.41
0.48
G
0.045
0.055
1.15
1.39
H
0.095
0.105
2.42
2.66
J
0.015
0.020
0.39
0.50
K
0.500
12.70
L
0.250
6.35
N
0.080
0.105
2.04
2.66
P
0.100
2.54
R
0.115
2.93
V
0.135
3.43
1
CASE 02904
(TO226AA)
ISSUE AD
STYLE 14:
PIN 1. EMITTER
2. COLLECTOR
3. BASE
Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding
the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit,
and specifically disclaims any and all liability, including without limitation consequential or incidental damages. "Typical" parameters can and do vary in different
applications. All operating parameters, including "Typicals" must be validated for each customer application by customer's technical experts. Motorola does
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associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part.
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BF420/D
*BF420/D*
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