SD1490
RF & MICROWAVE TRANSISTORS
TV/LINEAR APPLICATIONS
. 470 - 860 MHz
. 28 VOLTS
. CLASS A PUSH PULL
. DESIGNED FOR HIGH POWER LINEAR
OPERATION
. HIGH SATURATED POWER CAPABILITY
. GOLD METALLIZATION
. DIFFUSED EMITTER BALLAST
RESISTORS
. COMMON EMITTER CONFIGURATION
. INTERNAL INPUT MATCHING
. POUT = 25 W MIN. WITH 9.0 dB GAIN
.438 x .450 2LFL (M173)
epoxy sealed
ORDER CODE
B RA ND IN G
SD1490
SD1490
PIN CONNECTION
DESCRIPTION
The SD1490 is a gold metallized epitaxial silicon
NPN planar transistor using diffused emitter ballast
resistors for high linearity Class A operation in
UHF and Band IV, V television transmitters and
transposers.
ABSOLUTE MAXIMUM RATINGS (Tcase = 25°C)
Symb ol
Parameter
VCBO
VCEO
VEBO
IC
PDISS
TJ
TSTG
Collector-Base Voltage
Collector-Emitter Voltage
Emitter-Base Voltage
Device Current
Power Dissipation
Junction Temperature
Storage Temperature
THERMAL DATA
RTH(j-c) Junction-Case Thermal Resistance
June 1993
1. Collector
2. Base
3. Emitter
Value
Unit
45
V
30
V
3.0
V
8
A
135
W
+200
°C
− 50 to +150
°C
1.3
°C/W
1/6