MICROWAVE TRANSISTORS SATCOM APPLICATIONS 1.65 VOLTS EFFICIENCY M
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SD1898
MICROWAVE TRANSISTORS SATCOM APPLICATIONS
1.65 VOLTS EFFICIENCY MIN. CLASS OPERATION COMMON BASE MIN. WITH GAIN
.400 2LFL (M186) epoxy sealed ORDER CODE SD1898 BRANDING 1898
CONNECTION
DESCRIPTION SD1898 Class silicon transistor designed INMARSAT other 1.65 SATCOM applications. gold metallized emitterballasted geometry employed providing high gain efficiency while ensuring long term reliability ruggedness under severe operating conditions. SD1898 packaged cost-effective epoxy sealed housing. ABSOLUTE MAXIMUM RATINGS case
Symbol Parameter Value Unit
Collector Base
Emitter Base
VCBO VCEO VEBO PDISS
Collector-Base Voltage Collector-Emitter Voltage Emitter-Base Voltage Device Current Power Dissipation Junction Temperature Storage Temperature
87.5 +200 +150
THERMAL DATA RTH(j-c)
November 1992
Junction-Case Thermal Resistance
°C/W
SD1898
ELECTRICAL SPECIFICATIONS case STATIC
Symbol Test Conditions Value Min. Typ. Max. Unit
BVCBO BVCEO BVEBO DYNAMIC
Symbol
10mA 10mA 10mA
Test Conditions
Value Typ. Max.
Unit
POUT
1.65 1.65 1.65
TYPICAL PERFORMANCE
POWER OUTPUT POWER INPUT
EFFICIENCY POWER INPUT
SD1898
IMPEDANCE DATA
TYPICAL INPUT IMPEDANCE FREQ. 1550 TYPICAL COLLECTOR LOAD IMPEDANCE 1600 1650 15.0 14.5 12.0 12.0
TEST CIRCUIT
2.5pF Johanson Capacitor 15,000pF Filter 1000pF Chip Capacitor Turns Choke Diameter Wire .025" I.D. .125" Substrate: 10.2, Height .050", Copper Dimensions Inches.
SD1898
PACKAGE MECHANICAL DATA Ref.: Dwg. No.12-0186
Information furnished believed accurate reliable. However, SGS-THOMSON Microelectronics assumes responsability consequences such information infringement patents other rights third parties which results from use. license granted implication otherwise under patent patent rights SGS-THOMSON Microelectronics. Specifications mentioned this publication subject change without notice. This publication supersedes replaces information previously supplied. SGS-THOMSON Microelectronics products authorized ascritical components life support devices systems without express written approval SGS-THOMSON Microelectonics. 1994 SGS-THOMSON Microelectronics Rights Reserved SGS-THOMSON Microelectronics GROUP COMPANIES Australia Brazil France Germany Hong Kong Italy Japan Korea Malaysia Malta Morocco Netherlands Singapore Spain Sweden Switzerland Taiwan Thailand United Kingdom U.S.A
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