A D V A N C E D S E M I C O N D U C T O R, I N C. REV. A
7525 ETHEL AVENUE • NORTH HOLLYWOOD, CA 91605 • (818) 982-1202 • FAX (818) 765-3004 1/1
Specifications are subject to change without notice.
CHARACTERISTICS TC = 25
O
C
NONE
SYMBOL TEST CONDITIONS MINIMUM TYPICAL MAXIMUM UNITS
BV
CEO
I
C
= 20 mA 35 V
BV
CER
I
C
= 20 mA R
BE
= 10 Ω 55 V
BV
EBO
I
C
= 100 µA 3.5 V
I
CEX
V
CE
= 55 V V
BE
= -1.5 V 1.0 mA
h
FE
V
CE
= 5.0 V I
C
= 50 mA
I
C
= 400 mA
20
5.0
200
---
f
t
V
CE
= 20 V I
C
= 50 mA f = 200 MHz 700 1000 MHz
C
OB
V
CB
= 28 V f = 1.0 MHz 1.5 3.5 pF
P
in
η
V
CC
= 28 V f = 200 MHz
P
out
= 750 mW Rs = 50 Ω 35
75 mW
%
NPN SILICON HIGH FREQUENCY TRANSISTOR
2N4428
PACKAGE STYLE TO-39
1 = EMITTER 2 = BASE
3 = COLLECTOR
DESCRIPTION:
The 2N4428 is a High Frequency
Transistor Designed for Amplifier and
Oscillator Applications.
MAXIMUM RATINGS
I
C
425 mA
V
CE
30 V
P
DISS
3.5 W @ T
C
= 25
O
C
T
J
-65
O
C to +200
O
C
T
STG
-65
O
C to +200
O
C
θ
JC
50
O
C/W