1
Motorola Small–Signal Transistors, FETs and Diodes Device Data
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 IC500 mAdc
Total Device Dissipation @ TA = 25°C
Derate above 25°CPD625
5.0 mW
mW/°C
Total Device Dissipation @ TC = 25°C
Derate above 25°CPD1.5
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
—
µAdc
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
SEMICONDUCTOR TECHNICAL DATA
CASE 29–04, STYLE 14
TO–92 (TO–226AA)
123
Motorola, Inc. 1996
COLLECTOR
2
3
BASE
1
EMITTER
2 Motorola Small–Signal 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
CurrentGain — Bandwidth Product
(IC = 10 mAdc, VCE = 10 Vdc, f = 20 MHz) fT60 — MHz
Common Emitter Feedback Capacitance
(VCB = 30 Vdc, IE = 0, f = 1.0 MHz) Cre — 1.6 pF
3
Motorola Small–Signal 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
hFE, DC CURRENT GAIN
TJ = +125
°
C
25
°
C
–55
°
C
VCE = 10 Vdc
100
C, CAPACITANCE (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. Current–Gain — Bandwidth Product
IC, COLLECTOR CURRENT (mA) 10070503020107.05.03.02.0
100
70
50
30
20
10
TJ = 25
°
C
VCE = 20 V
f = 20 MHz
f, CURRENT–GAIN — BANDWIDTH PRODUCT (MHz)
T
1.0
IC, COLLECTOR CURRENT (mA)
Figure 4. “On” Voltages
V, VOLTAGE (VOLTS)
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
10070503020107.05.03.02.01.0 VCE, COLLECTOR–EMITTER VOLTAGE (VOLTS)
IC, COLLECTOR 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
µ
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
1005020105.02.01.00.5 200 500
10
µ
s
100 ms
4 Motorola Small–Signal 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
HSECTION X–X
C
V
D
N
N
X X
SEATING
PLANE DIM MIN MAX MIN MAX
MILLIMETERSINCHES
A0.175 0.205 4.45 5.20
B0.170 0.210 4.32 5.33
C0.125 0.165 3.18 4.19
D0.016 0.022 0.41 0.55
F0.016 0.019 0.41 0.48
G0.045 0.055 1.15 1.39
H0.095 0.105 2.42 2.66
J0.015 0.020 0.39 0.50
K0.500 ––– 12.70 –––
L0.250 ––– 6.35 –––
N0.080 0.105 2.04 2.66
P––– 0.100 ––– 2.54
R0.115 ––– 2.93 –––
V0.135 ––– 3.43 –––
1
CASE 029–04
(TO–226AA)
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 “T ypicals” must be validated for each customer application by customer’s technical experts. Motorola does
not convey any license under its patent rights nor the rights of others. Motorola products are not designed, intended, or authorized for use as components in
systems intended for surgical implant into the body , or other applications intended to support or sustain life, or for any other application in which the failure of
the Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such
unintended or unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless
against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death
associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part.
Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer .
How to reach us:
USA/EUROPE: Motorola Literature Distribution; JAPAN: Nippon Motorola Ltd.; Tatsumi–SPD–JLDC, Toshikatsu Otsuki,
P.O. Box 20912; Phoenix, Arizona 85036. 1–800–441–2447 6F Seibu–Butsuryu–Center, 3–14–2 Tatsumi Koto–Ku, Tokyo 135, Japan. 03–3521–8315
MFAX: RMFAX0@email.sps.mot.com – TOUCHTONE (602) 244–6609 HONG KONG: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park,
INTERNET: http://Design–NET.com 51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852–26629298
BF420/D
◊
