Datasheet SD2902 Datasheet (SGS Thomson Microelectronics)



HF/VHF/UHF N-CHANNEL MOSFETs

■ GOLDMETALLIZATION

■ COMMONSOURCE CONFIGURATION

■ 2 - 500 MHz

■ 15 WATTS

■ 28 VOLTS

■ 12.5 dB MIN. AT400 MHz

■ CLASSA OR AB OPERATION

■ EXCELLENTTHERMALSTABILITY

DESCRIPTION

The SD2902is a gold metallizedN-ChannelMOS
field-effect RF power transistor. It is intended for
use in 28 V DC large signal applications up to
500 MHz

SD2902

RF POWER TRANSISTORS

M113

epoxy sealed

ORDER CODE BRANDING

SD2902 SD2902

PIN CONNECTION

1. Drain 3.Gate

2. Source 4. Source

ABSOLUTE MAXIMUM RATINGS (T

Symb o l Parameter Val u e Uni t

V

(BR)DSS

V

V

P

T

Drain Source Voltage 65 V
Drain-G at e Voltage (RGS=1MΩ)

DGR

Gat e- Source Voltag e ±20 V

GS

Drain Cur re nt 2.5 A

I

D

Power Diss ipation 58.3 W

DISS

Max. Oper ating Juncti on Temperatu re 200

T

j

Storage Temperature -65 to 1 50

STG

case

=25oC)

65 V

THERMAL DATA

R

th(j-c)

R

th(c-s)

* Determined using a flat aluminum or copperheatsink with thermal compound applied (Dow Corning 340 or equivalent).

November 1999

Junct ion- Ca se Therm al Resist anc e
Case-Heat s i nk Therm al R esis tance ∗

3.0

0.30

o
o

o

C/W

o

C/W

C
C

1/8

SD2902

ELECTRICAL SPECIFICATION (T

case

=25oC)

STATIC

Symb o l Para met er Mi n . Typ . Max. Unit

V

(BR)DSSVGS

I

DSS

I

GSS

V

GS(Q)

V

DS(ON)VGS

g

FS

C

ISS

C

OSS

C

RSS

=0V IDS=15mA 65 V
VGS=0V VDS=28V 1.5 mA
VGS= 20V VDS=0V 1.0 µA
VDS= 10V ID=30mA 1.0 6.0 V

= 10V ID=1.5A 1.6 V
VDS= 10V ID=1.5A 0.6 mho
VGS=0V VDS=28V f=1MHz 23 pF
VGS=0V VDS=28V f=1MHz 18 pF
VGS=0V VDS=28V f=1MHz 3.5 pF

REF. 1021308K

DYNAMIC

Symb o l Para met er Mi n . Typ . Max. Unit

P

OUT

G

η

Load

Mismatch

f = 400 M H z VDD=28V IDQ=25mA 15 W
f = 400 M H z VDD=28V P

PS

f = 400 M H z VDD=28V P

D

f = 400 M H z V

DD

=28V P

=15W IDQ= 2 5 m A 12.5 13. 5 dB

out

=15W IDQ=25mA 45 55 %

out

=15W IDQ=25mA

out

10:1 VSWR

All Angles

IMPEDANCEDATA

2/8

FREQ. ZIN(Ω)Z

DL

(Ω)

400MHz 2.6-j6.5 7.8+j10

TYPICALPERFORMANCE

SD2902

Capacitancevs Drain-SourceVoltage

100

f = 1 MHz

10

C, CAPACITANCES(pF)

1

0102030

VDS. DRAIN-SOURCEVOLTAGE (VOLTS)

GC82930

Ciss

Coss

Crss

Drain Current vs Gate Voltage

5

4

3

2

1

ID, DRAIN CURRENT (A)

0

VDS = 10V

5678910

VGS, GATE-SOURCE VOLTAGE (VOLTS)

T=25°C

GC82950

T=-20°C

T=80°C

MaximumThermalResistancevs Case
Temperature

3.6

3.2

RTH(j-c)(ºC/W)

2.8
25 45 65 85

Tc, CASETEMPERATURE (ºC)

GC8294 0

Gate-SourceVoltages vs CaseTemperature

1.05

1

0.95

VGS, GATE-SOURCE VOLTAGE (NORMALIZED)

0.9

-25 0 25 50 75 100

VDD =10V

Tc, CASETEMPERATURE(ºC)

ID =3 A

ID = 25 mA

ID =2 A

ID =1.25 A

ID =500 mA

GC82960

3/8

SD2902

TYPICALPERFORMANCE

OutputPowervs Input Power

25

20

Tc= 25°C
f = 400 MHz
IDQ = 25 mA

15

10

5

Pout, OUTPUTPOWER (W)

0

0.1 0.4 0.7 1 1.3 1.6

Pin, INPUTPOWER (W)

Vdd = 28 V

Vdd = 13.5 V

GC82970

OutputPower vs Input Power

30

25

IDQ = 25 mA

20

VDD = 28 V
f =400 MHz

15

10

5

Pout, OUTPUT POWER (W)

0

0.1 0.4 0.7 1 1.3 1.6

Pin, INPUTPOWER (W)

OutputPowervs Voltage Supply OutputPower vs Gate Voltage

25

GC82990

Pin = 1.6 W

20

IDQ = 25 m A
f = 400 MHz

15

10

Pin = .8 W

Pin =.4 W

5

Pout, OUTPUT POWER (WATTS)

0

13 16 18 21 23 26 28

VDD,SUPPLYVOLTAGE (VOLTS)

20

15

10

5

VDD = 28 V
IDQ = 25 mA
f = 400 MHz
Pin = Constant

T=25°C

Pout, OUTPUT POWER (W)

0

-101234567

VGS, GATE-SOURCE VOLTAGE (VOLTS)

T = 25ºC

GC83000

T = -20ºC

T = 80ºC

GC82980

T = -20°C

T=80°C

PowerGainvs Output Power

15

14

13

Tc=25°C
f = 400 MHz
IDQ = 25 m A

12

PG, POWER GAIN (dB)

11

0 5 10 15 20 25

4/8

Pout, OUTPUT POWER (W)

GC83010

Efficiencyvs OutputPower

70

60

50

40

EFFICIENCY(%)

30

20

0 5 10 15 20 25

Pout, OUTPUT POWER (W)

Tc= 25°C
f = 400 MHz
IDQ = 25 mA

GC83020

400 MHz Test Circuit Schematic

SD2902

400 MHz Test Circuit Component Part List

5/8

SD2902

400 MHz Test Circuit Photomaster

ProductionTest Fixture

REF. 1022146B

6/8

M113 (.380 DIA 4/L N/HERM W/FLG) MECHANICAL DATA

SD2902

DIM.

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

mm inch

ControllingDimension:Inches

1010936D

7/8

SD2902

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granted by implication or otherwise underany 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.

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