polyfet rf devices
LY502
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.
SILICON GATE ENHANCEMENT MODE
RF POWER LDMOS TRANSISTOR
500.0Watts Push - Pull
Package Style AY
TM
"Polyfet" process features
HIGH EFFICIENCY, LINEAR
HIGH GAIN, LOW NOISE
ROHS COMPLIANT
low feedback and output capacitances,
resulting in high F transistors with high
input impedance and high efficiency.
t
o
25 C )
ABSOLUTE MAXIMUM RATINGS ( T =
Total
Device
Dissipation
Junction to
Case Thermal
Resistance
Maximum
Junction
Temperature
DC Drain
Current
Drain to
Gate
Voltage
Drain to
Source
Voltage
Gate to
Source
Voltage
Storage
Temperature
o
o
o
o
200
40.0
A
650 Watts
0.25 C/W
C
-65 C to 150 C
70 V
70 V
20 V
RF CHARACTERISTICS (
500.0 WATTS OUTPUT )
SYMBOL PARAMETER
MIN
18
TYP
MAX
UNITS TEST CONDITIONS
Gps
η
Common Source Power Gain
Idq = 0.80 A, Vds =
V, F =
V, F =
V, F =
MHz
dB
%
28.0
28.0
28.0
225
225
225
Idq =
Drain Efficiency
0.80
70
A, Vds =
A, Vds =
MHz
MHz
Idq = 0.80
VSWR
Load Mismatch Tolerance
10:1
Relative
ELECTRICAL CHARACTERISTICS ( EACH SIDE )
SYMBOL PARAMETER
MIN
65
TYP
MAX
UNITS TEST CONDITIONS
V
mA
uA
V
Drain Breakdown Voltage
Ids = 50.00 mA, Vgs = 0V
Vds =
Bvdss
Idss
4.0
Zero Bias Drain Current
Gate Leakage Current
28.0 V, Vgs = 0V
Igss
Vgs
1
5
Vds = 0V Vgs = 30V
Gate Bias for Drain Current
2
Ids = 0.30 A, Vgs = Vds
10.0
gM
Forward Transconductance
Saturation Resistance
Mho
Vds = 10V, Vgs = 5V
Rdson
Ohm
Vgs = 20V, Ids =20.00 A
0.10
70.00
300.0
15.0
Idsat
Ciss
Crss
Coss
Saturation Current
Amp
pF
Vgs = 20V, Vds = 10V
28.0 Vgs = 0V, F = 1 MHz
Common Source Input Capacitance
Common Source Feedback Capacitance
Common Source Output Capacitance
Vds =
Vds =
Vds =
28.0 Vgs = 0V, F = 1 MHz
pF
28.0 Vgs = 0V, F = 1 MHz
200.0
pF
REVISION 08/27/2008
POLYFET RF DEVICES
1110 Avenida Acaso, Camarillo, Ca 93012 Tel:(805) 484-4210 FAX: (805) 484-3393 EMAIL:Sell@polyfet.com URL:www.polyfet.com
