2N4428 Datasheet, PDF (1/1 Pages) Advanced Semiconductor – NPN SILICON HIGH FREQUENCY TRANSISTOR

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
425 mA
V_CE
P_DISS
T_J
T_STG
θ_JC
30 V
3.5 W @ T_C = 25 ^OC
-65 ^OC to +200 ^OC
-65 ^OC to +200 ^OC
50 ^OC/W
1 = EMITTER 2 = BASE
3 = COLLECTOR
NONE
CHARACTERISTICS TC = 25 ^OC
SYMBOL
TEST CONDITIONS
BV_CEO
I_C = 20 mA
BV_CER
I_C = 20 mA
R_BE = 10 Ω
BV_EBO
I_C = 100 µA
I_CEX
V_CE = 55 V
V_BE = -1.5 V
h_FE
V_CE = 5.0 V
I_C = 50 mA
I_C = 400 mA
MINIMUM
35
55
3.5
20
5.0
f_t
V_CE = 20 V
I_C = 50 mA
f = 200 MHz
700
C_OB
V_CB = 28 V
f = 1.0 MHz
P_in
V_CC = 28 V
f = 200 MHz
η
P_out = 750 mW Rs = 50 Ω
35
TYPICAL MAXIMUM
1.0
200
1000
1.5
3.5
75
UNITS
V
V
V
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 • [phone] • FAX [phone]
Specifications are subject to change without notice.
REV. A
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