FM BROADCAST APPLICATIONS
RF & MICROWAVE TRANSISTORS
.500 4LFL (M174)
epoxy sealed
.
108 MHz
.
28 VOLTS
.
EFFICIENCY 75%
.
COMMON EMITTER
.
GOLD METALLIZATION
.
P
OUT
=
150 W MIN. WITH 9.2 dB GAIN
DESCRIPTION
The SD1143 is a 28 V gold metallized epitaxial
silicon NPN planar transistor designed for VHF
FM broadcast transmitters. This device utilizes dif-
fused emitter resistors to achieve infinite VSWR
at rated operating conditions.
PIN CONNECTION
BRANDING
SD1460
ORDER CODE
SD1460
ABSOLUTE MAXIMUM RATINGS (T
case
=
25
C)
Symbol
Parameter
Value
Uni t
V
CBO
Collector-Base Voltage
60
V
V
CEO
Collector-Emitter Voltage
25
V
V
CES
Collector-Emitter Voltage
60
V
V
EBO
Emitter-Base Voltage
4.0
V
I
C
Device Current
16
A
P
DISS
Power Dissipation
230
W
T
J
Junction Temperature
+200
C
T
STG
Storage Temperature
-
65 to +150
C
R
TH(j-c)
Junction-Case Thermal Resistance
0.75
C/W
SD1460
1. Collector
3. Base
2. Emitter
4. Emitter
THERMAL DATA
November 1992
1/5
C1, C2,
C3, C9 : 24 - 200pF Variable, Arco 425
C4
: 470pF ATC 125 mil. Sq. Chip
C5
: 470pF Unelco, 400 mil. Sq.
C6
: 1000pF Unelco, 400 mil Sq.
C7
: 50 - 380pF Variable, Arco 465
C8
: 25 - 280pF Variable, Arco 464
C10
: .1
F 50V, Erie Disc
C11
: .01
F 50V, Erie Disc
C12
: 1000pF Unelco, 400 mil Sq.
C13
: 100
F 35V, Sprague Electrolytic
L1
: 3 Turns, #16 AWG, .225" I.D.
L2
: #14 AWG, Length .335", Height .400"
L5
: 5 1/2 Turns, #16 AWG Enameled .270" I.D.
L6
: #14 AWG, Length .300", Height .335"
L7
: 3 Turns, #16 AWG, Length .300", Height .335"
RFC 1 : VK200 19/4B (1 winding) Ferroxcube Choke
RFC 2 : 6 Turns, #16 AWG Enamel on T50-2 Torroid
Board Material: 3-M-K-6098 1/16" Thick
TEST CIRCUIT
SD1460
4/5
PACKAGE MECHANICAL DATA
Ref.: Dwg. No.12-0174
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 as critical 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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SD1460
5/5
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