SGS Thomson ST448
The SD1731 is a 50 V epitaxial silicon NPN planar transistor designed primarily for SSB communications. This device utilizes emitter ballasting for improved ruggedness and reliability.| Part No. | ST448 |
|---|---|
| Datasheet | ST448 Download |
| Manufacturer |  SGS Thomson |
| Description | RF & MICROWAVE TRANSISTORS HF SSB APPLICATIONS |
| Buy | Stock & Price |
APPLICATIONS
. . . . . . . PRELIMINARY DATA OPTIMIZED FOR SSB 30 MHz 50 VOLTS EFFICIENCY 40% COMMON EMITTER GOLD METALLIZATION POUT = 250 W PEP WITH 12 dB GAIN .50 0 4LF L (M17 4 ) epoxy sealed O R DE R CODE SD1731-14 BRANDING ST448 PIN CONNECTIONDESCRIPTION
ABSOLUTE MAXIMUM RATINGS
(T case = 25° C) Symbol Parameter Value Un it 1. Collector 2. Emitter 3. Base 4. Emitter VCBO VCEO VEBO IC PDISS TJ TSTG Collector-Base Voltage Collector-Emitter Voltage Emitter-Base Voltage Device Current Power Dissipation (Theatsink ≤ 25°C) Junction Temperature Storage Temperature 110 55 4.0 20 257 +200 − 65 to +150 V V V A W °C °C THERMAL DATA RTH(j-c) RTH(c-s) S e pte m ber 6, 1 99 6 Junction-Case Thermal Resistance Case-Heatsink Thermal Resistance 0.48 0.2 °C/W °C/W SD1731-14 (ST448)ELECTRICAL SPECIFICATIONS
STATIC (Tcase = 25°C) S ym bo l Te s t C o n ditio n s Va lu e Min. Typ . Ma x. Un it BVCBO BVCEO BVEBO ICEO ICES hFE IC = 2 00 mA IC = 2 00 mA IE = 2 0 mA VC E = 30 V VC E = 55 V VC E = 6 V IE =...
