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