SD1895-03
RF & MICROWAVE TRANSISTORS
1.6 GHz SATCOM APPLICATIONS
.
.
.
.
.
.
.
1.65 GHz
28 VOLTS
OVERLAY DIE GEOMETRY
ALL GOLD METALLIZED SYSTEM
HIGH RELIABILITY AND RUGGEDNESS
COOMON BASE
P
OUT
=
15 W MIN. WITH 9.2 dB GAIN
.250 x .320 2LFL (M170)
epoxy sealed
ORDER CODE
SD1895-03
BRANDING
SD1895-3
PIN CONNECTION
DESCRIPTION
The SD1895-03 is a 28 V silicon NPN planar tran-
sistor designed for INMARSAT and other 1.6 GHz
SATCOM applications. This device utilizes poly-
silicon site ballasting with a gold metallized die
to achieve high reliability and ruggedness.
ABSOLUTE MAXIMUM RATINGS
(T
case
=
25
°
C)
Symbol
Parameter
Value
Unit
1. Collector
2. Emitter
3. Base
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
15
3.0
3.0
37.2
+200
−
65 to +150
V
V
V
A
W
°
C
°
C
THERMAL DATA
R
TH(j-c)
July 1993
Junction-Case Thermal Resistance
4.7
°C/W
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SD1895-03
ELECTRICAL SPECIFICATIONS
(T
case
=
25
°
C)
STATIC
Symbol
Test Conditions
Value
Min.
Typ.
Max.
Unit
BV
CBO
BV
CEO
BV
EBO
h
FE
I
C
=
5 mA
I
C
=
5 mA
I
E
=
5 mA
V
CE
=
5 V
I
E
=
0 mA
I
B
=
0 mA
I
C
=
0 mA
I
C
=
1 A
45
12
3.0
15
—
—
—
—
—
—
—
150
V
V
V
—
DYNAMIC
Symbol
Test Conditions
Value
Min.
Typ.
Max.
Unit
P
OUT
G
P
η
c
f
=
1.65 GHz
f
=
1.65 GHz
f
=
1.65 GHz
P
IN
=
2.4 W
P
IN
=
2.4 W
P
IN
=
2.4 W
V
CE
=
28 V
V
CE
=
28 V
V
CE
=
28 V
20
9.2
48
—
—
—
—
—
—
W
dB
%
TYPICAL PERFORMANCE
POWER OUTPUT vs POWER INPUT
IMPEDANCE DATA
FREQ.
1.65 GHz
Z
IN
(
Ω
)
17.0 + j 18.0
Z
CL
(
Ω
)
3.5
−
j 2.0
2/4
SD1895-03
TEST CIRCUIT
C1, C2 : 0.4 - 2.5pF #27283 Johanson Trimmer
C3
: 100pF ATC 100A101KCA150 Chip Capacitor
C4
: 15,000pF EMI Filter Murata/Erie #9900-381-6004
L1, L2 : 4 Turns, #28 AWG. .080” I.D.
3/4
SD1895-03
PACKAGE MECHANICAL DATA
Ref.: Dwg. No.12-0170
Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsability for the
consequences of use of such information nor for any infringement of patents or other rights of third parties which may results from its use. No
license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned
in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied.
SGS-THOMSON Microelectronics products are not authorized for use ascritical components in life support devices or systems without express
written approval of SGS-THOMSON Microelectonics.
©
1994 SGS-THOMSON Microelectronics - All Rights Reserved
SGS-THOMSON Microelectronics GROUP OF COMPANIES
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4/4
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