SD2902 RF 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 MOS field-effect RF power transistor. It is intended for use in 28 V DC large signal applications up to 500 MHz M113 epoxy sealed ORDER CODE BRANDING SD2902 SD2902 PIN CONNECTION 1. Drain 2. Source 3.Gate 4. Source ABSOLUTE MAXIMUM RATINGS (Tcase = 25 oC) Symbol Parameter Value Uni t Drain Source Voltage 65 V V DGR Drain-Gate Voltage (R GS = 1MΩ) 65 V V GS Gate-Source Voltage ±20 V Drain Current 2.5 A Power Dissipation 58.3 W Max. O perating Junction Temperature 200 o C -65 to 150 o C V (BR)DSS ID P DI SS Tj T STG Storage Temperature 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 1/8 SD2902 ELECTRICAL SPECIFICATION (Tcase = 25 oC) STATIC Symb ol Parameter Min. 65 Typ . Max. Un it V (BR)DSS V GS = 0V I DS = 15 mA I DSS V GS = 0V V DS = 28 V 1.5 mA I GSS V GS = 20V V DS = 0 V 1.0 µA V GS(Q) V DS = 10V I D = 30 mA 6.0 V V DS( ON) V GS = 10V ID = 1.5 A g FS V DS = 10V I D = 1.5 A C ISS V GS = 0V V DS = 28 V f = 1 MHz C OSS V GS = 0V V DS = 28 V C RSS V GS = 0V V DS = 28 V V 1.0 1.6 0.6 V mho 23 pF f = 1 MHz 18 pF f = 1 MHz 3.5 pF REF. 1021308K DYNAMIC Symb ol Parameter P OUT f = 400 MHz V DD = 28 V G PS f = 400 MHz V DD = 28 V ηD f = 400 MHz Load f = 400 MHz Mismatch All Angles Min. Max. Un it 15 P out = 15 W I DQ = 25 mA 12.5 13.5 dB V DD = 28 V P out = 15 W I DQ = 25 mA 45 55 % V DD = 28 V P out = 15 W I DQ = 25 mA 10:1 IMPEDANCE DATA 2/8 Typ . IDQ = 25 mA FREQ . Z IN (Ω) Z DL (Ω) 400 MHz 2.6 - j 6.5 7.8 + j 10 W VSW R SD2902 TYPICAL PERFORMANCE Capacitance vs Drain-Source Voltage Maximum Thermal Resistance vs Case Temperature GC82930 100 GC82 94 0 3.6 Ciss RTH(j-c) (ºC/W) C, CAPACITANCES (pF) f = 1 MHz Coss 10 Crss 3.2 2.8 25 1 0 10 20 45 65 85 Tc, CASE TEMPERATURE (ºC) 30 VDS. DRAIN-SOURCE VOLTAGE (VOLTS) Drain Current vs Gate Voltage Gate-Source Voltages vs Case Temperature VGS, GATE-SOURCE VOLTAGE (NORMALIZED) GC82950 5 ID, DRAIN CURRENT (A) T = - 20°C T = 25°C 4 VDS = 10V 3 T = 80°C 2 1 0 5 6 7 8 9 VGS, GATE-SOURCE VOLTAGE (VOLTS) 10 GC82960 1.05 ID =3 A ID = 2 A ID = 1.25 A 1 ID = 500 mA 0.95 ID = 25 mA VDD = 10V 0. 9 -25 0 25 50 75 100 Tc, CASE TEMPERATURE (ºC) 3/8 SD2902 TYPICAL PERFORMANCE Output Power vs Input Power Output Power vs Input Power GC82970 GC83000 25 30 Pout, OUTPUT POWER (W) Pout, OUTPUTPOWER (W) Vdd = 28 V 20 Tc= 25°C f = 400 MHz IDQ = 25 mA 15 10 Vdd = 13.5 V 5 0 0.1 0.4 0.7 1 1.3 T = -20ºC T = 25º C 25 I DQ = 25 m A VDD = 28 V 20 f = 400 MHz T = 80ºC 15 10 5 0 0.1 1.6 0.4 0.7 1 1.3 1.6 Pin, INPUT POW ER (W) Pin, INPUT POWER (W) Output Power vs Voltage Supply Output Power vs Gate Voltage GC82980 GC82990 20 Pin = 1. 6 W Pout, OUTPUT POWER (W) Pout, OUTPUT POWER (WATTS) 25 20 IDQ = 25 m A f = 400 MHz 15 Pin = .8 W Pin = .4 W 10 5 T = -20°C 15 10 0 13 16 18 21 23 VDD, SUPPLY VOLTAGE (VOLTS) 26 T = 25°C VDD = 28 V IDQ = 25 mA f = 400 MHz Pin = Constant T = 80°C 5 0 28 -1 0 1 2 3 4 5 6 Power Gain vs Output Power Efficiency vs Output Power GC83020 GC83010 70 60 14 13 EFFICIENCY (%) PG, POWER GAIN (dB) 15 Tc= 25°C f = 400 MHz IDQ = 25 m A 50 40 Tc= 25°C f = 400 MHz IDQ = 25 mA 12 30 11 20 0 5 10 15 Pout, OUTPUT POWER (W) 4/8 7 VGS, GATE-SOURCE VOLTAGE (VOLTS) 20 25 0 5 10 15 Pout, OUTPUT POWER (W) 20 25 SD2902 400 MHz Test Circuit Schematic 400 MHz Test Circuit Component Part List 5/8 SD2902 400 MHz Test Circuit Photomaster REF. 1022146B Production Test Fixture 6/8 SD2902 M113 (.380 DIA 4/L N/HERM W/FLG) MECHANICAL DATA mm DIM. MIN. TYP. inch 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 Controlling Dimension: Inches 1010936D 7/8 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 . 8/8