SD1894
RF & MICROWAVE TRANSISTORS
SATELLITE COMMUNICATIONS APPLICATIONS
.
.
.
.
.
.
CLASS C
1.6 GHz
COMMON BASE
REFRACTORY/GOLD METALLIZATION
EFFICIENCY
=
50% MIN.
P
OUT
=
4.5 W MIN. WITH 10 dB GAIN
.250 x .320 2LFL (M170)
epoxy sealed
ORDER CODE
SD1894
BRANDING
SD1894
PIN CONNECTION
DESCRIPTION
The SD1894 is a common base silicon NPN bipolar
device optimized for 1.6 GHz SATCOM applica-
tions.
The SD1894 offers superior gain and collector effi-
ciency, making it an ideal choice for Class C power
amplifiers used in portable as well as fixed SAT-
COM terminals.
1. Collector
2. Emitter
3. Base
ABSOLUTE MAXIMUM RATINGS
(T
case
=
25
擄
C)
Symbol
Parameter
Valu e
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
45
45
3.0
375
12.5
+200
鈭?/div>
65 to +150
V
V
V
mA
W
擄
C
擄
C
THERMAL DATA
R
TH(j-c)
Junction-Case Thermal Resistance
14.0
擄
C/W
February 4, 1997
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