RF POWER TRANSISTORS HF/VHF/UHF N-CHANNEL MOSFETs - ST Microelectronics
Description
®
SD2904
RF POWER TRANSISTORS HF/VHF/UHF N-CHANNEL MOSFETs
s s s s s s s s
GOLD METALLIZATION COMMON SOURCE CONFIGURATION 2 - 500 MHz 30 WATTS 28 VOLTS 9.
5 dB MIN.
AT 400 MHz CLASS A OR AB OPERATION EXCELLENT THERMAL STABILITY M113 epoxy sealed ORDER CODE BRANDING SD2904 SD2904
DESCRIPTION The SD2904 is a gold metallized N-Channel MOS field-effect RF power transistor.
It is intended for use in 28 V DC large signal applications up to 500 MHz
PIN CONNECTION
1.
Drain 2.
Source ABSOLUTE MAXIMUM RATINGS (Tcase = 25 oC)
Symbol V (BR)DSS V DGR V GS ID P DI SS Tj T STG Parameter Drain Source Voltage Drain-Gate Voltage (R GS =1M Ω) Gate-Source Voltage Drain Current Power Dissipation Max.
O perating Junction Temperature Storage Temperature Value 65 65 ± 20 5 100 200 -65 to 150
3.
Gate 4.
Source
Uni t V V V A W
o o
C C
THERMAL DATA
R th (j-c) R th(c -s) Junction-Case T hermal Resistance Case-Heatsink T hermal Resistance ∗ 1.
75 0.
30
o o
C/W C/W
* Determined using a flat aluminum or copper heatsink with thermal compound applied (Dow Corning 340 or equivalent).
November 1999
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SD2904
ELECTRICAL SPECIFICATION (Tcase = 25 oC) STATIC
Symb ol V (BR)DSS I DSS I GSS V GS(Q) V DS( ON) g FS C ISS C OSS C RSS V GS = 0V V GS = 0V V GS = 20V V DS = 10V V GS = 10V V DS = 10V V GS = 0V V GS = 0V V GS = 0V Parameter I DS = 30 mA V DS = 28 V V DS = 0 V I D = 60 mA ID = 3 A ID = 3 A V DS = 28 V V DS = 28 V V DS = 28 V f = 1 MHz f = 1 MHz f = 1 MHz 1.
2 47 35 7 1.
0 Min.
65 3 2 6.
0 1.
6 Typ .
Max.
Un it V mA µA V V mho pF pF pF
REF.
1021310H
DYNAMIC
Symb ol P OUT G PS ηD f = 400 MHz f = 400 MHz f = 400 MHz Parameter V DD = 28 V V DD = 28 V V DD = 28 V V DD = 28 V P out = 30 W P out = 30 W P out = 30 W IDQ = 50 mA I DQ = 50 mA I DQ = 50 mA I DQ = 50 mA Min.
30 9.
5 45 10:1 11.
5 55 Typ .
Max.
Un it W dB % VSW R
Load f = 400 MHz Mismatch All Angles
IMPEDANCE DATA
FREQ .
400 MHz
Z IN ( Ω ) 2.
0 - j 2.
4
Z DL ( Ω) 5.
6 + j 0.
4
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SD2904
TYPICAL PERFORMANCE Capacitance vs Drain-Sourc...
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