F1240 Datasheet, PDF (1/2 Pages) Polyfet RF Devices – PATENTED GOLD METALIZED SILICON GATE ENHANCEMENT MODE RF POWER VDMOS TRANSISTOR

polyfet rf devices
F1240
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"^TM process features
gold metal for greatly extended
lifetime. Low output capacitance
and high F _t enhance broadband
performance
PATENTED GOLD METALIZED
SILICON GATE ENHANCEMENT MODE
RF POWER VDMOS TRANSISTOR
40 Watts Single Ended
Package Style AT
HIGH EFFICIENCY, LINEAR,
HIGH GAIN, LOW NOISE
ABSOLUTE MAXIMUM RATINGS (TC = 25 C^o)
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
120 Watts
1.5 ^oC/W
200 ^oC
-65^oC to 150^oC
6A
50 V
50 V
30V
RF CHARACTERISTICS ( 40WATTS OUTPUT )
SYMBOL PARAMETER
MIN
TYP MAX UNITS TEST CONDITIONS
Gps
Common Source Pow er Gain
10
dB Idq = 1.2 A, Vds = 12.5 V, F = 175 MHz
η
Drain Efficiency
60
% Idq = 1.2 A, Vds = 12.5 V, F = 175 MHz
VSWR Load Mismatch Tolerance
20:1 Relative Idq = 1.2 A, Vds = 12.5 V, F = 175 MHz
ELECTRICAL CHARACTERISTICS (EACH SIDE)
SYMBOL PARAMETER
MIN
TYP MAX UNITS TEST CONDITIONS
Bvdss Drain Breakdow n Voltage
40
V
Ids = 0.15 A, Vgs = 0V
Idss
Zero Bias Drain Current
3
mA
Vds = 12.5V, Vgs = 0V
Igss
Gate Leakage Current
1
uA
Vds = 0 V, Vgs = 30V
Vgs
Gate Bias for Drain Current
1
7
V
Ids = 0.3 A, Vgs = Vds
gM
Forw ard Transconductance
2.4
Mho
Vds = 10V, Vgs = 5V
Rdson Saturation Resistance
0.35
Ohm
Vgs = 20V, Ids = 24A
Idsat
Saturation Current
22.5
Amp
Vgs = 20V, Vds = 10V
Ciss
Common Source Input Capacitance
120
pF
Vds = 12.5 V, Vgs = 0V, F = 1 MHz
Crss
Common Source Feedback Capacitance
18
pF
Vds = 12.5 V, Vgs = 0V, F = 1 MHz
Coss
Common Source Output Capacitance
90
pF
Vds = 12.5 V, Vgs = 0V, F = 1 MHz
POLYFET RF DEVICES
REVISION 8/1/97
1110 Avenida Acaso, Camarillo, CA 93012 TEL:[phone] FAX:[phone] EMAIL:[e-mail] URL:w w w .polyfet.com