Product Summary

The 2938840 is an internally matched, COMMON BASE bipolar transistor capable of providing 150 Watts of pulsed RF output power at 50μs pulse width, 4% duty factor across the 2900 to 3100 MHz band. The transistor prematch and test fixture has been optimized through the use of Pulsed Automated Load Pull. This hermetic ceramic sealed transistor is specifically designed for S-band radar applications. It utilizes gold metallization and emitter ballasting to provide high reliability and supreme ruggedness.

Parametrics

2938840 absolute maximum ratings: (1)device dissipation @ 25°c1: 500 w; (2)collector to base voltage (bvces): 65 v; (3)emitter to base voltage (bvebo): 3.0 v; (4)collector current (ic): 15.0 a; (5)storage temperature: -65 to +200°C; (6)operating junction temperature: +200°C.

Features

2938840 features: (1)pout power output: 150 w; (2)pin power input: 21.7 w; (3)Pg Power Gain: 8.3 to 8.7 dB; (4)hc Collector Efficiency: 45 to 50 %; (5)Rl Return Loss: 7 dB; (6)Pd Pulse Droop: 0.6 dB; (7)tr Rise Time: 150 nS.

Diagrams

2938840 pin connection

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