SD1538-08
RF & MICROWAVE TRANSISTORS
AVIONICS APPLICATIONS
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DESIGNED FOR HIGH POWER PULSE
IFF, DME, AND TACAN APPLICATIONS
200 W (typ.) IFF 1030 - 1090 MHz
150 W (min.) DME 1025 - 1150 MHz
140 W (typ.) TACAN 960 - 1215 MHz
7.8 dB MIN. GAIN
REFRACTORY GOLD METALLIZATION
BALLASTING AND LOW THERMAL
RESISTANCE FOR RELIABILITY AND
RUGGEDNESS
30:1 LOAD VSWR CAPABILITY AT
SPECIFIED OPERATING CONDITIONS
INPUT AND OUTPUT MATCHED,
COMMON BASE CONFIGURATION
.400 x .400 2LFL (M138)
hermetically sealed
ORDER CODE
SD1538-08
BRANDING
1538-8
PIN CONNECTION
DESCRIPTION
The SD1538-08 is a gold metallized, silicon NPN
power transistor. The SD1538-08 is designed for
applications requiring high peak power and low
duty cycles such as IFF, DME and TACAN. The
SD1538-08 is packaged in a metal/ceramic pack-
age with internal input/output matching, resulting
in improved broadband performance and low ther-
mal resistance.
ABSOLUTE MAXIMUM RATINGS
(T
case
=
25
°
C)
Symbol
Parameter
1. Collector
2. Base
3. Emitter
4. Base
Value
Unit
V
CBO
V
CES
V
EBO
I
C
P
DISS
T
J
T
STG
Collector-Base Voltage
Collector-Emitter Voltage
Emitter-Base Voltage
Device Current
Power Dissipation
Junction Temperature
Storage Temperature
65
65
3.5
11
583
+200
−
65 to +150
V
V
V
A
W
°
C
°
C
THERMAL DATA
R
TH(j-c)
September 6, 1994
Junction-Case Thermal Resistance
0.30
°C/W
1/5
STMICROELECTRONICS [ STMICROELECTRONICS ]
