SGS Thomson Microelectronics SD1542 Datasheet
RF & MICROWAVE TRANSISTORS
.DESIGNED FOR HIGH POWER PULSED
IFF AND DME APPLICATIONS
.600 WATT S (typ .) IFF 10 30/109 0 MHz
.550 WATTS (min.) DME 1025 - 1150 MHz
.5.6 dB MIN. GAIN
.REFRACTORY GOLD METALLIZATI ON
.BALLASTING AND LOW THERMAL
RESISTANCE FOR RELIABILITY AND
RUGGEDNESS
.30:1 LOAD VSWR CAPABILITY AT
SPECIFIED OPERATING CONDITIONS
.INTERNAL INPUT/OUTPUT MATCHED,
COMMON BASE CONFIGURATION
.400 x .500 2LFL (M112)
ORDER CO DE
SD1542
PIN CONNECTION
SD1542
AVIONICS APPLICATIONS
hermetically sealed
BRANDING
SD1542
DESCRIPTION
The SD1542 is a hermetically sealed, gold metallized, silicon NPN power transistor. The
SD1542 is designed for applications req uiring hig h
peak power and low duty cycles such as IFF and
DME. The SD1542 is pa ckaged in a hermetic metal/ceramic package with internal input/output
matching, resulting in improved broadband performance and a low thermal resistance.
ABSOLUTE MAXIMUM RATINGS (T
Symbol Parameter Value Unit
V
V
V
P
T
CBO
CES
EBO
I
C
DISS
T
J
STG
Collector-Base Voltage 65 V
Collector-Emitter Voltage 65 V
Emitter-Base Voltage 3.5 V
Device Current 40 A
Power Dissipation 1350 W
Junction Temperature +200
Storage Temperature
case
= 25°C)
1. Collector 3. Emitter
2. Base 4. Base
65 to +200
−
°
C
°
C
THERMAL DATA
R
TH(j-c)
November 1992
Junction-Case Thermal Resistance 0.06 °C/W
1/4
SD1542
ELECTRICAL SPECIFICATIONS (T
case
= 25°C)
STATIC
Symbol Test Condi tions
BV
CBOIC
BV
CESIC
BV
EBOIE
I
CES
h
FE
= 25mA IE = 0mA 65 — — V
= 50mA VBE = 0V 65 — — V
= 10mA IC = 0mA 3.5 — — V
VCE = 50V IE = 0mA — — 35 mA
VCE = 5V IC = .25A 5 — 200 —
DYNAMIC
Symbol Test Conditi ons
P
OUT
G
Note: Pulse Widt h = 10µSec, Duty Cycle = 1%
f = 1025 — 1150MHz PIN = 150 W VCE = 50 V 550 — — W
f = 1025 — 1150MHz PIN = 150 W VCE = 50 V 5.6 — — dB
P
IMPEDANCE DATA
Valu e
Min. Typ. Max.
Value
Min. Typ. Max.
Unit
Unit
TYPICAL INPUT IMPEDANCE
FREQ. ZIN (Ω)Z
1020 MHz 1.78 + j 3.0 1.33 − j 2.7
1090 MHz 1.57 + j 2.1 1.64 − j 3.4
1150 MHz 1.55 + j 1.4 1.93 − j 4.0
TYPICAL COLLECTOR LOAD
IMPEDANCE
(Ω)
CL
2/4
PIN = 150 W
VCE = 50 V
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