RF & MICROWAVE TRANSISTORS
.REFRACTORY\GOLD METALLIZATION
.RUGGEDIZED VSWR 25:1
.INTERNAL INPUT/OUTPUT MATCHING
.LOW THERMAL RESISTANCE
.METAL/CERAMIC HERMETIC PACKAGE
.P
OUT
450 W MIN. WITH 7.0 dB GAIN
=
MSC81450M
AVIONICS APPLICAT ION S
.400 x .500 2LFL (S038)
hermetically sealed
ORDER CODE
MSC81450M
PIN CONNECTIO N
DESCRIP TIO N
The MSC81450M device is a high power pulsed
transistor specifically designed for IFF avionics
applications.
This device is capable of withstandinga minimum
25:1 load mismatch at any phase angle under full
rated conditions.
The MSC81450M is housed in the unique BIGPAC package with internal input/output matching structures.
ABSOLUTE MAXIMUM RATINGS (T
Symbol Parameter Value Unit
P
T
DISS
I
V
CC
T
STG
C
J
Power Dissipation* 910 W
Device Current* 28 A
Collector-Supply Voltage* 55 V
Junction Temperature (Pulsed RF Operation) 250
Storage Temperature
case
= 25°C)
1. Collector 3. Emitter
2. Base 4. Base
65 to +200
−
BRAN DI NG
81450M
°
C
°
C
THERMAL DATA
R
TH(j-c)
*Appliesonly toratedRF amplifieroperation
Junction-CaseThermal Resistance* 0.15
°
C/W
MSC81450M
ELECTRICAL S PEC I FICATIONS (T
case
= 25°C)
STATIC
Symbol Test Conditions
BV
CBO
BV
EBO
BV
CER
I
CES V
h
FE V
IC= 15mA IE= 0mA
IE= 1mA IC= 0mA
IC= 50mA RBE= 10Ω 65 — — V
= 50V
CE
= 5V IC= 1A
CE
DYNAMIC
Symbol Test Conditions
P
OUT f = 1090 MHz P
η
cf=1090 MHz P
G
P f = 1090 MHz P
Note: P ulse Width=10µSec
Duty Cycle
1%
=
= 90 W VCC= 50 V
IN
= 90 W VCC= 50 V
IN
= 90 W VCC= 50 V
IN
Value
Min. Typ . Max.
Uni t
65 — — V
3.5 — — V
— — 35 mA
15 — 120 —
Value
Min. Typ. Max.
Uni t
450 500 — W
40 — — %
7.0 — — dB
TEST CIRCUIT
Ref.: Dwg. No. C125363
All dimensions are in inches.
PACKAGE MECHANI CAL DATA
Ref.: Dwg. No. 12-0212rev. A
MSC81450M
Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility
for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all
information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life
support devices or systems without express written approval of SGS-THOMSON Microelectronics.
1995 SGS-THOMSON Microelectronics - All Rights Reserved
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SGS-THOMSON Microelectronics GROUP OF COMPANIES
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