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STAN250A Datasheet(PDF) 1 Page - STMicroelectronics

No. de pieza STAN250A
Descripción Electrónicos  RF & MICROWAVE TRANSISTORS AVIONICS APPLICATIONS
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
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STAN250A Datasheet(HTML) 1 Page - STMicroelectronics

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July 19, 1994
AVIONICS APPLICATIONS
RF & MICROWAVE TRANSISTORS
.400 x .400 2LFL (S036)
hermetically sealed
.
REFRACTORY/GOLD METALLIZATION
.
EMITTER SITE BALLASTED
.
5:1 VSWR CAPABILITY @ 1.75 dB RF
OVERDRIVE
.
LOW THERMAL RESISTANCE
.
INPUT/OUTPUT MATCHING
.
OVERLAY GEOMETRY
.
METAL/CERAMIC HERMETIC PACKAGE
.
POUT
= 250 W MIN. WITH 8.0 dB GAIN
DESCRIPTION
The SD8250 is a high power Class C transistor
specifically designed for TACAN/DME pulsed out-
put and driver applications.
This device is designed for operation under mod-
erate pulse width and duty cycle pulse conditions
and is capable of withstanding 5:1 output VSWR
at rated RF overdrive.
Low RF thermal resistance and computerized au-
tomatic wire bonding techniques ensure high re-
liability and product consistency.
The SD8250 is supplied in the AMPAC
™ Hermetic
Metal/Ceramic package with internal Input/Output
matching structures.
PIN CONNECTION
BRANDING
STAN250A
ORDER CODE
SD8250
ABSOLUTE MAXIMUM RATINGS (Tcase
= 25°C)
Symbol
Parameter
Value
Uni t
PDISS
Power Dissipation*
(TC
≤ 90°C)
575
W
IC
Device Current*
20
A
VCC
Collector-Supply Voltage*
55
V
TJ
Junction Temperature (Pulsed RF Operation)
250
°C
TSTG
Storage Temperature
− 65 to +200
°C
RTH(j-c)
Junction-Case Thermal Resistance
(1)
0.28
°C/W
*Applies only to rated RF amplifier operation
(1) Infra-Red Scan of Hot Spot Junction Temperature at Rated RF Operating Conditions
SD8250
1. Collector
3. Emitter
2. Base
4. Base
THERMAL DATA
1/5


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