polyfet rf devices
LB501
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
175.0 Watts Push - Pull
Package Style LB
TM
"Polyfet"
process features
low feedback and output capacitances,
HIGH EFFICIENCY, LINEAR
HIGH GAIN, LOW NOISE
resulting in high F transistors with high
t
input impedance and high efficiency.
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
23.0
A
440 Watts
0.44 C/W
C
-65 C to 150 C
70 V
70 V
20 V
RF CHARACTERISTICS (
175.0 WATTS OUTPUT )
SYMBOL PARAMETER
MIN
13
TYP
MAX
UNITS
TEST CONDITIONS
Idq = 0.80 A, Vds = 28.0 V, F = 500
Gps
Common Source Power Gain
MHz
dB
%
h
Idq =
0.80
Drain Efficiency
50
A, Vds = 28.0 V, F = 500 MHz
Idq = 0.80
A, Vds = 28.0 V, F = 500
MHz
VSWR
Load Mismatch Tolerance
5:1 Relative
ELECTRICAL CHARACTERISTICS ( EACH SIDE )
SYMBOL PARAMETER
MIN
65
TYP
MAX
UNITS
V
TEST CONDITIONS
Drain Breakdown Voltage
Ids = 0.25 mA, Vgs = 0V
Vds =
Bvdss
Idss
1.0
Zero Bias Drain Current
Gate Leakage Current
mA
28.0 V, Vgs = 0V
Igss
Vgs
1
7
uA
V
Vds = 0V Vgs = 30V
Gate Bias for Drain Current
1
Ids = 0.30 A, Vgs = Vds
4.8
gM
Forward Transconductance
Saturation Resistance
Mho
Vds = 10V, Vgs = 5V
Rdson
Ohm
Vgs = 20V, Ids =13.00 A
0.30
30.00
150.0
7.5
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
28.0 Vgs = 0V, F = 1 MHz
pF
100.0
pF
REVISION 07/17/2003
POLYFET RF DEVICES
1110 Avenida Acaso, Camarillo, Ca 93012 Tel:(805) 484-4210 FAX: (805) 484-3393 EMAIL:Sales@polyfet.com URL:www.polyfet.com