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SD2902RF POWER TRANSISTORS
HF/VHF/UHF N-CHANNEL MOSFETs
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
DESCRIPTION The SD2902 is a gold metallized N-Channel MOSfield-effect RF power transistor. It is intended foruse in 28 V DC large signal applications up to500 MHz
PIN CONNECTION
November 1999
ABSOLUTE MAXIMUM RATINGS (Tcase = 25 oC)
Symbol Parameter Value Unit
V(BR)DSS Drain Source Voltage 65 V
VDGR Drain-Gate Voltage (RGS = 1MΩ) 65 V
VGS Gate-Source Voltage ±20 V
ID Drain Current 2.5 A
PDISS Power Dissipation 58.3 W
Tj Max. Operating Junction Temperature 200 oC
TSTG Storage Temperature -65 to 150 oC
THERMAL DATA
Rth(j-c)
Rth(c-s)
Junction-Case Thermal ResistanceCase-Heatsink Thermal Resistance ∗
3.00.30
oC/WoC/W
* Determined using a flat aluminum or copper heatsink with thermal compound applied (Dow Corning 340 or equivalent).
M113epoxy sealed
®
ORDER CODE BRANDING SD2902 SD2902
1. Drain 3.Gate 2. Source 4. Source
1/8
ELECTRICAL SPECIFICATION (Tcase = 25 oC)
STATIC
Symbol Parameter Min. Typ. Max. Unit
V(BR)DSS VGS = 0V IDS = 15 mA 65 V
IDSS VGS = 0V VDS = 28 V 1.5 mA
IGSS VGS = 20V VDS = 0 V 1.0 µA
VGS(Q) VDS = 10V ID = 30 mA 1.0 6.0 V
VDS(ON) VGS = 10V ID = 1.5 A 1.6 V
gFS VDS = 10V ID = 1.5 A 0.6 mho
CISS VGS = 0V VDS = 28 V f = 1 MHz 23 pF
COSS VGS = 0V VDS = 28 V f = 1 MHz 18 pF
CRSS VGS = 0V VDS = 28 V f = 1 MHz 3.5 pF
DYNAMIC
Symbol Parameter Min. Typ. Max. Unit
POUT f = 400 MHz VDD = 28 V IDQ = 25 mA 15 W
GPS f = 400 MHz VDD = 28 V Pout = 15 W IDQ = 25 mA 12.5 13.5 dB
ηD f = 400 MHz VDD = 28 V Pout = 15 W IDQ = 25 mA 45 55 %
LoadMismatch
f = 400 MHz VDD = 28 V Pout = 15 W IDQ = 25 mA All Angles
10:1 VSWR
IMPEDANCE DATA
FREQ. ZIN (Ω) ZDL (Ω)
400 MHz 2.6 - j 6.5 7.8 + j 10
REF. 1021308K
SD2902
2/8
Capacitance vs Drain-Source Voltage
0 10 20 301
10
100
VDS. DRAIN-SOURCE VOLTAGE (VOLTS)
C,
CA
PA
CIT
AN
CE
S (
pF)
Ciss
Crss
Coss
f = 1 MHz
GC82930
Drain Current vs Gate Voltage
Maximum Thermal Resistance vs CaseTemperature
25 45 65 852.8
3.2
3.6
Tc, CASE TEMPERATURE (ºC)
RTH
(j-c)
(ºC
/W)
GC82940
Gate-Source Voltages vs Case Temperature
-25 0 25 50 75 1000.9
0.95
1
1.05
Tc, CASE TEMPERATURE (ºC)
VG
S,
GA
TE
-SO
UR
CE
VO
LTA
GE
(N
OR
MA
LIZ
ED
)
VDD = 10V
GC82960
ID = 500 mA
ID = 2 A
ID = 25 mA
ID = 1.25 A
ID =3 A
5 6 7 8 9 100
1
2
3
4
5
VGS, GATE-SOURCE VOLTAGE (VOLTS)
ID,
DR
AIN
CU
RR
EN
T (A
)
VDS = 10V
T = 25°C
T = 80°C
GC82950
T = - 20°C
TYPICAL PERFORMANCE
SD2902
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13 16 18 21 23 26 280
5
10
15
20
25
VDD, SUPPLY VOLTAGE (VOLTS)
Po
ut, O
UTP
UT
PO
WE
R (W
ATTS
) Pin = 1.6 W
Pin = .8 W
Pin = .4 W
IDQ = 25 mAf = 400 MHz
GC82990
Output Power vs Input Power
0.1 0.4 0.7 1 1.3 1.60
5
10
15
20
25
Pin, INPUT POWER (W)
Pou
t, O
UTP
UT
PO
WE
R (
W)
Vdd = 28 V
Vdd = 13.5 V
Tc= 25°Cf = 400 MHz
IDQ = 25 mA
GC82970
Output Power vs Input Power
0.1 0.4 0.7 1 1.3 1.60
5
10
15
20
25
30
Pin, INPUT POWER (W)
Pou
t, O
UTP
UT
PO
WE
R (
W) T = -20ºCT = 25º C
T = 80ºC
IDQ = 25 mA
VDD = 28 V
f = 400 MHz
GC83000
Output Power vs Voltage Supply Output Power vs Gate Voltage
-1 0 1 2 3 4 5 6 70
5
10
15
20
VGS, GATE-SOURCE VOLTAGE (VOLTS)
Pou
t, O
UTP
UT
PO
WE
R (
W)
VDD = 28 VIDQ = 25 mAf = 400 MHzPin = Constant
T = 80°C
T = -20°C
T = 25°C
GC82980
Power Gain vs Output Power
0 5 10 15 20 2511
12
13
14
15
Pout, OUTPUT POWER (W)
PG
, P
OW
ER
GA
IN (
dB)
Tc= 25°C
f = 400 MHzIDQ = 25 mA
GC83010
Efficiency vs Output Power
0 5 10 15 20 2520
30
40
50
60
70
Pout, OUTPUT POWER (W)
EF
FIC
IEN
CY
(%
)
Tc= 25°C
f = 400 MHz
IDQ = 25 mA
GC83020
TYPICAL PERFORMANCE
SD2902
4/8
400 MHz Test Circuit Schematic
400 MHz Test Circuit Component Part List
SD2902
5/8
400 MHz Test Circuit Photomaster
REF. 1022146B
Production Test Fixture
SD2902
6/8
DIM.mm inch
MIN. TYP. MAX. MIN. TYP. MAX.
A 5.59 5.84 0.220 0.230
B 19.81 20.83 0.780 0.820
C 18.29 18.54 0.720 0.730
D 24.64 24.89 0.970 0.980
E 9.40 9.78 0.370 0.385
F 0.10 0.15 0.004 0.006
G 2.16 2.67 0.085 0.105
H 4.06 4.57 0.160 0.180
I 7.14 0.281
J 6.22 6.48 0.245 0.255
K 3.05 3.30 0.120 0.130
1010936D
M113 (.380 DIA 4/L N/HERM W/FLG) MECHANICAL DATA
Controlling Dimension: Inches
SD2902
7/8
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequencesof use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license isgranted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specification mentioned in this publication aresubject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics productsare 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 ReservedSTMicroelectronics GROUP OF COMPANIES
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SD2902
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