MRF857S NJSEMI | Alldatasheet
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20 STERN AVE. SPRINGFIELD, NEW JERSEY 07081 U.S.A. The RF Line NPN Silicon RF Power Transistor Designed for 24 Volt UHF large-signal, common emitter, class A linear amplifier applications in industrial and commercial equipment operating in the range of 800-960 MHz.
- Specified for VQE = 24 Vdc, IG = 0.3 Adc Characteristics Output Power = 2.1 Watts CW Minimum Power Gain = 12.5 dB Minimum ITO = +43 dBm Typical Noise Figure = 5.25 dB
- Characterized with Small-Signal S-Parameters and Series Equivalent Large-Signal Parameters from 800-960 MHz
- Silicon Nitride Passivated
- 100% Tested for Load Mismatch Stress at All Phase Angles with 30:1 VSWR @ 24 Vdc, Ic = 0.3 Adc and Rated Output Power . Will Withstand RF Input Overdrive of 0.4 W CW
- Gold Metallized, Emitter Ballasted for Long Life and Resistance to Metal Migration
- Circuit board photomaster available upon request by contacting RF Tactical Marketing in Phoenix, AZ. TELEPHONE: (973) 376-2922 (212) 227-6005 FAX: (973) 378-8960 MRF857S CLASS A 800-960 MHz
2.1 W (CW), 24 V
CASE305D-01, MAXIMUM RATINGS Rating Collector-Emitter Voltage Collector-Base Voltage Emitter-Base Voltage Total Device Dissipation @ TC = 50°C Derate above 50°C Operating Junction Temperature Storage Temperature Range Symbol VCEO VCBO VEBO PD TJ Tstg Value 0.114 200 -65to+150 Unit Vdc Vdc Vdc Watts W/"C THERMAL CHARACTERISTICS Characteristic Thermal Resistance (Tj = 15CPC, TC = 50°C) Symbol Rejc Max 8.4 Unit °c/w
ELECTRICAL CHARACTERISTICS
Collector-Emitter Breakdown Voltage (Ic = 20 mA, IB = 0) Collector-Emitter Breakdown Voltage (Ic = 20 mA, VBE = 0) Collector-Base Breakdown Voltage (Ic = 20 mA, Ig = 0) Emitter-Base Breakdown Voltage (IE = 1 mA, Ic = 0) Collector Cutoff Current (VCB = 24 V, IE = 0) V(BR)CEO V(BR)CES V(BR)CBO V(BR)EBO !CES Vdc Vdc Vdc Vdc mA (continued) NJ Semi-Conductors reserves the right to change test conditions, parameter limits and package dimensions without notice. Information furnished b> N.I Semi-Conductors is believed to be both accurate and reliable at the time of"going to press. However. NJ Semi-Conductors assumes no responsibility for any errors or omissions discovered in its use. NI Semi-Conductors encourages customers to verify that datasheets ;ire current before placing orders. Onolitv
Table 1. MRF857S Common Emitter S-Parameters **Table 2. Zjn and ZQL* versus Frequency** ZOL* = Conjugate of optimum load impedance into which the device operates at a given output power, voltage and frequency.