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.30 MHz
.12.5 VOLTS
.COMMON EMITTER
.GOLD METALLIZATION
.IMD − 30 dB
.P
= 20 W MIN . WITH 15 dB GAIN
OUT
SD1285
RF & MICROWAVE TRANSISTORS
HF SSB APPLICATIONS
.380 4LFL (M113)
epoxy sealed
ORDER CO DE
SD1285
PIN CONNECTION
BRANDING
SD1285
DESCRIPTION
The SD1285 is a 12.5 V epitaxial NPN planar
transistor designed primarily for SSB communications. This device utilizes emitter ballasting to
achieve extreme ruggedness under severe operating conditions.
ABSOLUTE MAXIMUM RATINGS (T
Symbol Parameter Value Unit
V
CBO
V
CEO
V
EBO
I
C
P
DISS
T
J
T
STG
THERMAL DATA
R
TH(j-c)
Collector-Base Voltage 36 V
Collector-Emitter Voltage 18 V
Emitter-Base Voltage 4.0 V
Device Current 4.5 A
Power Dissipation 80 W
Junction Temperature +200
Storage Temperature
Junction-Case Thermal Resistance 2.2 °C/W
case
= 25°C)
1. Collector 3. Base
2. Emitter 4. Emitter
65 to +150
−
°
C
°
C
October 1992
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SD1285
ELECTRICAL SPECIFICATIONS (T
case
= 25°C)
STATIC
Symbol Test Condi tions
BV
CBOIC
BV
CESIC
BV
CEOIC
BV
EBOIE
I
CES
h
FE
= 50mA IE = 0mA 36 — — V
= 50mA VBE = 0V 36 — — V
= 50mA IB = 0mA 18 — — V
= 5mA IC = 0mA 4.0 — — V
VCE = 15V IE = 0mA — — 5 mA
VCE = 5V IC = 1A 10 — 200 —
Min. Typ. Max.
Valu e
DYNAMIC
Symbol Test Conditi ons
P
OUT
G
f = 30 MHz VCC = 12.5 V ICQ = 25 mA 20 — — W
f = 30 MHz VCC = 12.5 V ICQ = 25 mA 15 18 — dB
P
Value
Min. Typ. Max.
IMD f = 30 MHz VCC = 12.5 V ICQ = 25 mA — — − 30 dB
C
OB
Note: PIN = 0.65 W
f = 1 MHz VCB = 12.5 V — 100 — pF
Unit
Unit
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PACKAGE MECHANICAL DATA
Ref.: Dwg. No.12-0113
SD1285
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
Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands -
Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A
SGS-THOMSON Microelectronics GROUP OF COMPANIES
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