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F1222 Datasheet, PDF (1/2 Pages) Polyfet RF Devices – PATENTED GOLD METALIZED SILICON GATE ENHANCEMENT MODE RF POWER VDMOS TRANSISTOR 
polyfet rf devices
F1222
General Description
Silicon VDMOS and LDMOS
transistors designed specifically
for broadband RF applications.
Suitable for Military Radios,
Cellular and Paging Amplifier Base
Stations, Broadcast FM/AM, MRI,
Laser Driver and others.
"Polyfet" TMprocess features
gold metal for greatly extended
lifetime. Low output capacitance
and high Ft enhance broadband
performance
PATENTED GOLD METALIZED
SILICON GATE ENHANCEMENT MODE
RF POWER VDMOS TRANSISTOR
20 Watts Single Ended
Package Style AP
HIGH EFFICIENCY, LINEAR,
HIGH GAIN, LOW NOISE
ABSOLUTE MAXIMUM RATINGS (TC = 25 Co )
Total
Device
Dissipation
Junction to
Case Thermal
Resistance
Maximum
Junction
Temperature
Storage
Temperature
DC Drain
Current
Drain to
Gate
Voltage
Drain to
Source
Voltage
Gate to
Source
Voltage
80 Watts
2.1 oC/W
200 oC
-65 oC to 150oC
4A
50 V
50 V
30V
RF CHARACTERISTICS ( 20WATTS OUTPUT )
SYMBOL PARAMETER
MIN
TYP MAX UNITS TEST CONDITIONS
Gps
Common Source Power Gai
10
dB Idq = 0.8 A, Vds = 12.5 V, F = 400 MHz
η
Drain Efficiency
60
% Idq = 0.8 A, Vds = 12.5 V, F = 400 MHz
VSWR Load Mismatch Toleranc
20:1 Relative Idq = 0.8 A, Vds = 12.5 V, F = 400 MHz
ELECTRICAL CHARACTERISTICS (EACH SIDE)
SYMBOL PARAMETER
MIN
TYP MAX UNITS TEST CONDITIONS
Bvdss Drain Breakdown Voltag
40
V
Ids = 0.1 A, Vgs = 0V
Idss
Zero Bias Drain Curren
2
mA
Vds = 12.5 V, Vgs = 0V
Igss
Gate Leakage Curren
1
uA
Vds = 0 V, Vgs = 30V
Vgs
Gate Bias for Drain Curren
1
7
V
Ids = 0.2 A, Vgs = Vds
gM
Forward Transconductanc
1.6
Mho
Vds = 10V, Vgs = 5V
Rdson Saturation Resistanc
0.45
Ohm
Vgs = 20V, Ids = 16 A
Idsat
Saturation Curren
15
Amp
Vgs = 20V, Vds = 10V
Ciss
Common Source Input Capacitanc
80
pF
Vds = 12.5 V, Vgs = 0V, F = 1 MHz
Crss
Common Source Feedback Capacitanc
12
pF
Vds = 12.5 V, Vgs = 0V, F = 1 MHz
Coss
Common Source Output Capacitanc
60
pF
Vds = 12.5 V, Vgs = 0V, F = 1 MHz
POLYFET RF DEVICES
REVISION 8/1/97
1110 Avenida Acaso, Camarillo, CA 93012 TEL:(805) 484-4210 FAX:(805) 484-3393 EMAIL:Sales@polyfet.com URL:www.polyfet.com