Document
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SD2902
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 15 WATTS 28 VOLTS 12.5 dB MIN. AT 400 MHz CLASS A OR AB OPERATION EXCELLENT THERMAL STABILITY M113 epoxy sealed ORDER CODE BRANDING SD2902 SD2902
DESCRIPTION The SD2902 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 2.5 58.3 200 -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 ∗ 3.0 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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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 = 15 mA V DS = 28 V V DS = 0 V I D = 30 mA ID = 1.5 A I D = 1.5 A V DS = 28 V V DS = 28 V V DS = 28 V f = 1 MHz f = 1 MHz f = 1 MHz 0.6 23 18 3.5 1.0 Min. 65 1.5 1.0 6.0 1.6 Typ . Max. Un it V mA µA V V mho pF pF pF
REF. 1021308K
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 = 15 W P out = 15 W P out = 15 W IDQ = 25 mA I DQ = 25 mA I DQ = 25 mA I DQ = 25 mA Min. 15 12.5 45 10:1 13.5 55 Typ . Max. Un it W dB % VSW R
Load f = 400 MHz Mismatch All Angles
IMPEDANCE DATA
FREQ . 400 MHz
Z IN ( Ω ) 2.6 - j 6.5
Z DL ( Ω) 7.8 + j 10
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SD2902
TYPICAL PERFORMANCE Capacitance vs Drain-Source Voltage
GC82930 100
GC82 94 0
Maximum Thermal Resistance vs Case Temperature
3.6
f = 1 MHz
C, CAPACITANCES (pF)
Ciss
Coss 10
RTH(j-c) (ºC/W)
3.2
Crss
2.8
1 0 10 20 30
25
45
65
85
Tc, CASE TEMPERATURE (ºC)
VDS. DRAIN-SOURCE VOLTAGE (VOLTS)
Drain Current vs Gate Voltage
GC82950
Gate-Source Voltages vs Case Temperature
5
T = - 20°C
VGS, GATE-SOURCE VOLTAGE (NORMALIZED)
GC82960
1.05
ID =3 A ID = 2 A ID = 1.25 A
ID, DRAIN CURRENT (A)
4
VDS = 10V
T = 25°C
1
3
T = 80°C
ID = 500 mA
2
0.95
VDD = 10V ID = 25 mA
1
0
5
6
7
8
9
10
0. 9 -25
0
25
50
75
100
VGS, GATE-SOURCE VOLTAGE (VOLTS)
Tc, CASE TEMPERATURE (ºC)
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SD2902
TYPICAL PERFORMANCE Output Power vs Input Power
GC82970
Output Power vs Input Power
GC83000
25
Vdd = 28 V
30
Pout, OUTPUTPOWER (W)
Pout, OUTPUT POWER (W)
20
Tc= 25 °C f = 400 MHz
25
I DQ = 25 m A VDD = 28 V f = 400 MHz
T = 25º C
T = -20ºC
15
IDQ = 25 mA
20
T = 80ºC
15
10
Vdd = 13.5 V
10
5
5
0 0.1
0.4
0.7
1
1.3
1.6
0 0.1
0.4
0.7
1
1.3
1.6
Pin, INPUT POWER (W)
Pin, INPUT POW ER (W)
Output Power vs Voltage Supply
GC82990
Output Power vs Gate Voltage
GC82980
25 Pout, OUTPUT POWER (WATTS)
Pin = 1. 6 W
20
20 15 10
IDQ = 25 m A f = 400 MHz Pin = .8 W
Pout, OUTPUT POWER (W)
T = -20° C
15
VDD = 28 V IDQ = 25 mA f = 400 MHz Pin = Constant
T = 25°C
Pin = .4 W
10
T = 80°C
5 0 13 16 18 21 23 VDD, SUPPLY VOLTAGE (VOLTS) 26 28
5
0 -1 0 1 2 3 4 5 6 7
VGS, GATE-SOURCE VOLTAGE (VOLTS)
Power Gain vs Output Power
GC83010
Efficiency vs Output Power
GC83020
15
70
PG, POWER GAIN (dB)
60 14
EFFICIENCY (%)
50
13
Tc= 25°C f = 400 MHz IDQ = 25 m A
40
Tc= 25 °C f = 400 MHz IDQ = 25 mA
12 30
11 0 5 10 15 20 25
20 0 5 10 15 20 25
Pout, OUTPUT POWER (W)
Pout, OUTPUT POWER (W)
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SD2902
400 MHz Test Circuit Schematic
400 MHz Test Circuit Component Part List
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SD2902
400 MHz Test Circuit Photomaster
REF. 1022146B
Production Test Fixture
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SD2902
M113 (.380 DIA 4/L N/HERM W/FLG) MECHANICAL DATA
mm MIN. A B C D E F G H I J K 6.22 3.05 5.59 19.81 18.29 24.64 9.40 0.10 2.16 4.06 TYP. MAX. 5.84 20.83 18.54 24.89 9.78 0.15 2.67 4.57 7.14 6.48 3.30 0.245 0.120 MIN. 0.220 0.780 0.720 0.970 0.370 0.004 0.085 0.160 inch TYP. MAX. 0.230 0.820 0.730 0.980 0.385 0.006 0.105 0.180 0.281 0.255 0.130
DIM.
Controlling Dimension: Inches
1010936D
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SD2902
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