DESCRIPTION
The SD1898 is a 28 V Class C silicon NPN transistor designed for INMARSAT and other 1.65 GHz SATCOM applications. A gold metallized emitterballasted die geometry is employed providing high gain and efficiency while ensuring long term reliability and ruggedness under severe operating conditions. SD1898 is packaged in a cost-effective epoxy sealed housing.

■ 1.65 GHz
■ 28 VOLTS
■ EFFICIENCY 40% MIN.
■ CLASS C OPERATION
■ COMMON BASE
■ POUT = 32 W MIN. WITH 9 dB GAIN