140 COMMERCE DRIVE
MONTGOMERYVILLE, PA
18936-1013
PHONE: (215) 631-9840
FAX: (215) 631-9855
MS2421
RF & MICROWAVE TRANSISTORS
AVIONICS APPLICATIONS
Features
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DESIGNED FOR HIGH POWER PULSED IFF, DME, AND
TACAN APPLICATIONS
350 W (typ.) IFF 1030 – 1090 MHz
300 W (min.) DME 1025 – 1150 MHz
290 W (typ.) TACAN 960 – 1215 MHz
960 – 1215 MHz
GOLD METALLIZATION
P
OUT
= 300W MINIMUM
G
P
= 6.3 dB MINIMUM
INFINITE VSWR CAPABILITY @ RATED CONDITIONS
EMITTER BALLASTED
COMMON BASE
DESCRIPTION:
The MS2421 is a gold metallized silicon, NPN power transistor
designed for applications requiring high peak power and low duty
cycles such as IFF, DME, and TACAN. The MS2421 is designed
with internal input/output matching resulting in improved
broadband performance and low thermal resistance.
ABSOLUTE MAXIMUM RATINGS
(Tcase = 25° C)
°
Symbol
P
DISS
V
CES
V
CBO
V
EBO
T
J
I
C
T
STG
Power Dissipation
Collector-Emitter Voltage
Collector-Base Voltage
Emitter-Base Voltage
Junction Temperature
Device Current
Storage Temperature
Parameter
Value
875
65
65
3.5
200
22
-65 to +200
Unit
W
V
V
V
º
C
A
º
C
Thermal Data
R
TH(J-C)
Junction-case Thermal Resistance
0.20
°
C/W
Advanced Power Technology reserves the right to change, without notice, the specifications and information contained herein
Visit our website at
WWW.ADVANCEDPOWER.COM
or contact our factory direct.
140 COMMERCE DRIVE
MONTGOMERYVILLE, PA
18936-1013
PHONE: (215) 631-9840
FAX: (215) 631-9855
MS2421
ELECTRICAL SPECIFICATIONS (Tcase = 25° C)
25
°
STATIC
Symbol
BV
CBO
BV
EBO
I
CES
HFE
I
C
= 10 mA
I
E
= 5.0 mA
V
CE
= 50 V
V
CE
= 5 V
I
C
= 500mA
Test Conditions
I
E
= 0 mA
I
C
= 0 mA
Value
Min.
65
3.5
---
10
Typ.
---
---
---
---
Max.
---
---
25
200
Unit
V
V
mA
mA
DYNAMIC
Symbol
P
OUT
G
P
η
C
Conditions
Test Conditions
f =1025 - 1150 MHz
f =1025 - 1150 MHz
f =1025 - 1150 MHz
P
IN
= 70W
P
IN
= 70W
P
IN
= 70W
V
CE
=50V
V
CE
=50V
V
CE
=50V
Value
Min.
300
6.3
35
Typ.
---
---
---
Max.
---
---
---
Unit
W
dB
%
Pulse Width = 10
µ
s Duty Cycle = 1%
IMPEDANCE DATA
FREQ
960 MHz
1090 MHz
1215 MHz
Pin = 70W
Z
IN
(
Ω)
2.6 + j6.0
7.4 + j4.4
4.3 + j1.1
Vce = 50V
Z
CL
(
Ω)
2.5 – j6.0
2.4 – j6.2
2.5 – j4.9
Advanced Power Technology reserves the right to change, without notice, the specifications and information contained herein
Visit our website at
WWW.ADVANCEDPOWER.COM
or contact our factory direct.
140 COMMERCE DRIVE
MONTGOMERYVILLE, PA
18936-1013
PHONE: (215) 631-9840
FAX: (215) 631-9855
MS2421
TYPICAL PERFORMANCE
IMPEDANCE DATA
Advanced Power Technology reserves the right to change, without notice, the specifications and information contained herein
Visit our website at
WWW.ADVANCEDPOWER.COM
or contact our factory direct.
140 COMMERCE DRIVE
MONTGOMERYVILLE, PA
18936-1013
PHONE: (215) 631-9840
FAX: (215) 631-9855
MS2421
TEST CIRCUIT
Advanced Power Technology reserves the right to change, without notice, the specifications and information contained herein
Visit our website at
WWW.ADVANCEDPOWER.COM
or contact our factory direct.
140 COMMERCE DRIVE
MONTGOMERYVILLE, PA
18936-1013
PHONE: (215) 631-9840
FAX: (215) 631-9855
MS2421
PACKAGE MECHANICAL DATA
MECHANICAL
Advanced Power Technology reserves the right to change, without notice, the specifications and information contained herein
Visit our website at
WWW.ADVANCEDPOWER.COM
or contact our factory direct.
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