SD1540-08
RF & MICROWAVE TRANSISTORS
AVIONICS APPLICATIONS
.
.
.
.
.
.
.
.
.
DESIGNED FOR HIGH POWER PULSED
IFF, DME, TACAN APPLICATIONS
350 WATTS (typ.) IFF 1030 - 1090 MHz
300 WATTS (min.) DME 1025 - 1150 MHz
290 WATTS (typ.) TACAN 960 - 1215 MHz
6.3 dB MIN. GAIN
REFRACTORY GOLD METALLIZATION
EMITTER BALLASTING AND LOW
THERMAL RESISTANCE FOR
RELIABILITY AND RUGGEDNESS
20:1 LOAD VSWR CAPABILITY AT
SPECIFIED OPERATING CONDITIONS
INPUT/OUTPUT MATCHED, COMMON
BASE CONFIGURATION
.400 x .400. 2LFL (M138)
hermetically sealed
ORDER CODE
SD1540-08
BRANDING
SD1540-8
PIN CONNECTION
DESCRIPTION
The SD1540-08 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 SD1540 is packaged
in a metal/ceramic package with internal input/out-
put matching resulting in improved broadband per-
formance and a low thermal resistance.
ABSOLUTE MAXIMUM RATINGS
(T
case
=
25
掳
C)
Symbol
Parameter
Value
Unit
1. Collector
2. Base
3. Emitter
4. Base
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
22
875
+200
鈭?/div>
65 to +150
V
V
V
A
W
掳
C
掳
C
THERMAL DATA
R
TH(j-c)
Junction-Case Thermal Resistance
November 1992
0.20
掳C/W
1/5
1
2
3
4
5
