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)
S ym b o l V DG R VGS ID P DI S S Tj TSTG P a r am e t e r D r a in - G a te Voltage (R G S = 1M) G a t e -S o u rc e Voltage D r a in Current P o w e r Dissipation M a x . Operating Junction Temperature S t o ra g e Temperature Va l u e 65 65 20 2.5 58 . 3 200 - 6 5 to 150
3.Gate 4. Source
U ni t V V V A W
o o
V ( B R ) D S S D r a in Source Voltage
C C
THERMAL DATA
R t h ( j- c) R t h(c -s ) J un c t i on - C a s e Thermal Resistance C as e - H e at s i n k Thermal 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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SD2902
ELECTRICAL SPECIFICATION (Tcase = 25 oC) STATIC
Sy m b o l V (BR )DSS I DS S IGSS V GS ( Q) V DS ( O N) g FS CISS COSS CR SS V G S = 0V V G S = 0V V G S = 20V V D S = 10V V G S = 10V V D S = 10V V G S = 0V V G S = 0V V G S = 0V P a r a m et e r I D S = 15 mA V D S = 28 V VDS = 0 V I D = 30 mA I D = 1.5 A I D = 1.5 A V D S = 28 V V D S = 28 V V D S = 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. M a x. Unit V mA A V V mho pF pF pF
REF. 1021308K
DYNAMIC
Sy m b o l P O UT GPS D f = 400 MHz f = 400 MHz f = 400 MHz P a r a m et e r V D D = 28 V V D D = 28 V V D D = 28 V V D D = 28 V P o u t = 15 W P o u t = 15 W P o u t = 15 W I D Q = 25 mA I D Q = 25 mA I D Q = 25 mA I D Q = 25 mA Min. 15 12.5 45 10 : 1 13.5 55 Typ. M a x. Unit W dB % VSWR
Lo a d f = 400 MHz M is m a t c h All Angles
IMPEDANCE DATA
F R EQ . 4 00 MHz
Z I N () 2. 6 - j 6.5
Z D L () 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)
Ci s s
Cos s 10
RTH(j-c) (C/W)
3.2
Crs s
2.8
1 0 10 20 30
25
45
65
85
V DS . DRAIN-SOURCE VOLTAGE (VOLTS)
Tc, CASE TEMPERATURE (C)
Drain Current vs Gate Voltage
GC829 5 0
Gate-Source Voltages vs Case Temperature
5
T = - 20C
VGS, GATE-SOURCE VOLTAGE (NORMALIZED)
GC 829 60
1. 0 5
I D =3 A ID = 2 A
ID, DRAIN CURRENT (A)
4
VDS = 10V
T = 25C
1
I D = 1.25 A
3
T = 80C
I D = 500 mA
2
0. 9 5
VD D = 10V I D = 25 mA
1
0
5
6
7
8
9
10
0. 9 -25
0
25
50
75
100
V GS , GATE-SOURCE VOLTAGE (VOLTS)
Tc, CASE TEMPERATURE (C)
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SD2902
TYPICAL PERFORMANCE Output Power vs Input Power
GC 82 9 70
Output Power vs Input Power
GC 83 00 0
25
V dd = 28 V
30
Pout , OUTPUT POWER (W)
P out, OUTPUT POWER (W)
20
Tc= 25C f = 400 MHz
25
I D Q = 25 mA V D D = 28 V f = 400 MHz
T = 25 C
T = -20C
15
I D Q = 25 mA
20
T = 80C
15
10
V dd = 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
Pi n, INPUT POWER (W)
P in, INPUT POW E R (W)
Output Power vs Voltage Supply
GC 82 9 90
Output Power vs Gate Voltage
GC 82 98 0
25 Po ut, OUTPUT POWER (WATTS)
Pin = 1.6 W
20
P out, OUTPUT POWER (W)
T = -20C
20 15 10
I D Q = 25 mA f = 400 MHz Pin = .8 W
15
V D D = 28 V I D Q = 25 mA f = 400 MHz Pin = Const ant
T = 25C
Pin = .4 W
10
T = 80C
5 0 13 16 18 21 23 VDD, SUPPLY VOLTAGE (VOLTS) 26 28
5
0 -1 0 1 2 3 4 5 6 7
V GS , GATE-SOURCE VOLTAGE (VOLTS)
Power Gain vs Output Power
GC 83 0 10
Efficiency vs Output Power
GC 83 0 20
15
70
PG, POWER GAIN (dB)
60 14
EFFICIENCY (%)
50
13
Tc= 25C f = 400 MHz I D Q = 25 mA
40
Tc= 25C f = 400 MHz I D Q = 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
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specification mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a trademark of STMicroelectronics 1999 STMicroelectronics Printed in Italy All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom - U.S.A. http://www.st.com .
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