Details, datasheet, quote on part number: MRF321
PartMRF321
CategoryDiscrete => Transistors => Bipolar => RF
Description10 W, 400 Mhz, RF Power Transistor NPN Silicon
CompanyM/A-COM, Inc.
DatasheetDownload MRF321 datasheet
Cross ref.Similar parts: C12-2, CD5918
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Features, Applications

. designed primarily for wideband large­signal driver and predriver amplifier stages in 200­500 MHz frequency range. Guaranteed Performance at 400 MHz, 28 Vdc Output Power = 10 Watts Power Gain 12 dB Min Efficiency = 50% Min 100% Tested for Load Mismatch at all Phase Angles with 30:1 VSWR Gold Metallization System for High Reliability Computer­Controlled Wirebonding Gives Consistent Input Impedance

Rating Collector­Emitter Voltage Collector­Base Voltage Emitter­Base Voltage Collector Current Continuous Collector Current Peak Total Device Dissipation 25°C (1) Derate above 25°C Storage Temperature Range Symbol VCEO VCBO VEBO IC PD Tstg Value to +150 Unit Vdc Adc Watts mW/°C °C

Characteristic Thermal Resistance, Junction to Case Symbol RJC Max 6.4 Unit °C/W

Collector­Emitter Breakdown Voltage (IC = 20 mAdc, = 0) Collector­Emitter Breakdown Voltage (IC = 20 mAdc, VBE = 0) Collector­Base Breakdown Voltage (IC = 20 mAdc, = 0) Emitter­Base Breakdown Voltage (IE = 2.0 mAdc, = 0) Collector Cutoff Current (VCB = 30 Vdc, = 0) V(BR)CEO V(BR)CES V(BR)CBO V(BR)EBO ICBO Vdc mAdc

NOTE: (continued) 1. This device is designed for RF operation. The total device dissipation rating applies only when the device is operated an RF amplifier.

ELECTRICAL CHARACTERISTICS continued (TC = 25°C unless otherwise noted.)

Common­Emitter Amplifier Power Gain (VCC = 28 Vdc, Pout = 400 MHz) Collector Efficiency (VCC = 28 Vdc, Pout = 400 MHz) Load Mismatch (VCC = 28 Vdc, Pout = 400 MHz, VSWR = 30:1 all phase angles) GPE No Degradation in Output Power dB %

1.0­20 pF Johanson Trimmer (JMC 47 pF ATC Chip Capacitor 0.1 ”F Erie Redcap 0.5­10 pF Johanson Trimmer (JMC 0.018 ”F Vitramon Chip Capacitor 200 pF UNELCO Capacitor 680 pF Feedthru C13 1.0 ”F, 50 Volt Tantalum Capacitor 0.33 ”H Molded Choke with Ferroxcube Bead L1 (Ferroxcube 56­590­65/4B) on Ground End of Coil L2 4 Turns #20 Enamel, 1/8 ID

L3 6 Turns #20 Enamel, ID L4 Ferroxcube , 1/4 Watt , 1.0 Watt , 1/2 Watt , 1/2 Watt Z1 Microstrip L Z2 Microstrip L Z3 Microstrip L Z4 Microstrip 1.75 L Board Glass Teflon, = 0.062 Input/Output Connectors Type N

Figure 3. Output Power versus Input Power
Figure 4. Output Power versus Supply Voltage

 

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