![](http://datasheet.mmic.net.cn/340000/MRF858_datasheet_16475391/MRF858_1.png)
1
MRF858 MRF858S
MOTOROLA RF DEVICE DATA
Motorola, Inc. 1995
The RF Line
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 VCE = 24 Vdc, IC = 0.5 Adc Characteristics
Output Power = 3.6 Watts CW
Minimum Power Gain = 11 dB
Minimum ITO = +44.5 dBm
Typical Noise Figure = 6 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 = 0.5 Adc and Rated Output Power
Will Withstand RF Input Overdrive of 0.85 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.
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Collector–Emitter Voltage
VCEO
VCBO
VEBO
PD
30
Vdc
Collector–Base Voltage
55
Vdc
Emitter–Base Voltage
4
Vdc
Total Device Dissipation @ TC = 50
°
C
Derate above 50
°
C
20
0.138
Watts
W/
°
C
Operating Junction Temperature
TJ
Tstg
200
°
C
Storage Temperature Range
–65 to +150
°
C
THERMAL CHARACTERISTICS
Characteristic
Symbol
Max
Unit
°
C/W
Thermal Resistance (TJ = 150
°
C, TC = 50
°
C)
ELECTRICAL CHARACTERISTICS
R
θ
JC
6.9
Characteristic
Symbol
Min
Typ
Max
Unit
OFF 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, IE = 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
ICES
28
35
—
Vdc
55
85
—
Vdc
55
85
—
Vdc
4
5
—
Vdc
—
—
1
mA
(continued)
Teflon is a registered trademark of du Pont de Nemours & Co., Inc.
Order this document
by MRF858/D
SEMICONDUCTOR TECHNICAL DATA
CLASS A
800–960 MHz
3.6 W (CW), 24 V
NPN SILICON
RF POWER TRANSISTOR
CASE 319–07, STYLE 2
MRF858
CASE 319A–02, STYLE 2
MRF858S
REV 2