SD1490
RF & MICROWAVE TRANSISTORS
TV/LINEAR APPLICATIONS
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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
P
OUT
=
25 W MIN. WITH 9.0 dB GAIN
.438 x .450 2LFL (M173)
epoxy sealed
ORDER CODE
SD1490
BRANDING
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
(T
case
=
25
擄
C)
Symbol
Parameter
Value
Unit
1. Collector
2. Base
3. Emitter
V
CBO
V
CEO
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
45
30
3.0
8
135
+200
鈭?/div>
50 to +150
V
V
V
A
W
擄
C
擄
C
THERMAL DATA
R
TH(j-c)
June 1993
Junction-Case Thermal Resistance
1.3
擄C/W
1/6
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