SD4931 RF power transistors HF/VHF/UHF N-channel MOSFETs Features ■ Improved ruggedness V(BR)DSS > 200 V ■ Excellent thermal stability ■ 20:1 all phases load mismatch capability ■ POUT = 150 W min. with 14.8 dB gain @ 175 MHz ■ In compliance with the 2002/95/EC European directive Description M174 Epoxy sealed The SD4931 is a N-channel MOS field-effect RF power transistor. It is intended for use in 50 V DC large signal applications up to 250 MHz. Table 1. Figure 1. Pin connection 4 1 3 2 1. Drain 3. Gate 2. Source 4. Source Device summary Order code Marking Base qty. Package Packaging(1) SD4931 SD4931(1) 25 pcs M174 Plastic tray 1. For more details please refer to Chapter 5: Marking, packing and shipping specifications.. May 2011 Doc ID 15486 Rev 3 1/13 www.st.com 13 Contents SD4931 Contents 1 2 Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.1 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.1 Static . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.2 Dynamic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Typical performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5 Marking, packing and shipping specifications . . . . . . . . . . . . . . . . . . . 11 6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 2/13 Doc ID 15486 Rev 3 SD4931 Electrical data 1 Electrical data 1.1 Maximum ratings Table 2. Absolute maximum ratings (TCASE = 25°C) Symbol V(BR)DSS VDGR VGS ID PDISS TJ TSTG 1.2 Parameter Value Unit Drain source voltage 200 V Drain-gate voltage (RGS = 1 MΩ) 200 V Gate-source voltage ±20 V Drain current 20 A Power dissipation 389 W Max. operating junction temperature 200 °C -65 to +150 °C Value Unit 0.45 °C/W Storage temperature Thermal data Table 3. Symbol RthJC Thermal data Parameter Junction - case thermal resistance Doc ID 15486 Rev 3 3/13 Electrical characteristics 2 SD4931 Electrical characteristics TCASE = +25 °C 2.1 Static Table 4. Static Symbol 2.2 Test conditions Min 200 V(BR)DSS VGS = 0 V IDS = 100 mA IDSS VGS = 0 V VDS = 100 V IGSS VGS = 20 V VDS = 0 V VTH ID = 250 V VDS(ON) VGS = 10 V ID = 10 A GFS VDS = 10 V ID = 2.5 A CISS VGS = 0 V VDS = 50 V COSS VGS = 0 V CRSS VGS = 0 V 1.5 2.5 Max Unit V 1 mA 250 nA 2.5 4.0 V 3.5 5.0 V 4.0 S f = 1 MHz 500 pF VDS = 50 V f = 1 MHz 200 pF VDS = 50 V f = 1 MHz 8 pF Dynamic Table 5. Dynamic Symbol Test conditions Min Typ Max Unit P1dB VDD = 50 V f = 175 MHz 150 175 W GPS VDD = 50 V IDQ = 250 mA POUT = 150 W f = 175 MHz 13 14.8 dB nD VDD = 50 V IDQ = 250 mA POUT = 150 W f = 175 MHz 50 56 % 10:1 20:1 VSWR IDQ = 250 mA VDD = 50 V IDQ = 250 mA POUT = 150 W f = 175 MHz Load mismatch All phase angles 4/13 Typ Doc ID 15486 Rev 3 SD4931 Typical performance Figure 2. Transient thermal impedance 3INGLEREPETITIVEPULSE 4HERMALIMPEDANCE :4(* # #7 3 Typical performance SINGLEPULSE % % % % % 2ECTANGULARPOWERPULSEWIDTHSEC Doc ID 15486 Rev 3 % !-6 5/13 Typical performance Figure 3. SD4931 Transient thermal impedance model $ISSIPATED0OWE R?7ATTS 2 2/HM # # # & 2 2 2/HM # # # & 2 2 2/HM # # # & 2 2 2/HM # # # & !-6 6/13 Doc ID 15486 Rev 3 SD4931 Typical performance Figure 4. Power gain and efficiency vs output power_Vdd = 50 V, Idq = 250 mA Freq = 175 MHz Table 6. Vgs sort (@250 mA) Marking Min. Max. DD 1.5 1.6 EE 1.6 1.7 FF 1.7 1.8 A 1.8 1.9 B 1.9 2 C 2 2.1 D 2.1 2.2 E 2.2 2.3 F 2.3 2.4 G 2.4 2.5 H 2.5 2.6 I 2.6 2.7 J 2.7 2.8 K 2.8 2.9 L 2.9 3 M 3 3.1 N 3.1 3.2 O 3.2 3.3 P 3.3 3.4 Q 3.4 3.5 Doc ID 15486 Rev 3 7/13 Typical performance Table 6. 8/13 SD4931 Vgs sort (@250 mA) (continued) Marking Min. Max. R 3.5 3.6 S 3.6 3.7 T 3.7 3.8 U 3.8 3.9 V 3.9 4 Doc ID 15486 Rev 3 SD4931 4 Package mechanical data Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK® packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions and product status are available at: www.st.com. ECOPACK is an ST trademark. Table 7. M174 (0.500 DIA 4/L N/HERM W/FLG) mechanical data mm. Inch Dim. Min A Typ 5.56 B Max Min 5.584 0.219 3.18 Typ Max 0.230 0.125 C 6.22 6.48 0.245 0.255 D 18.28 18.54 0.720 0.730 E 3.18 0.125 F 24.64 24.89 0.970 0.980 G 12.57 12.83 0.495 0.505 H 0.08 0.18 0.003 0.007 I 2.11 3.00 0.083 0.118 J 3.81 4.45 0.150 0.175 K 7.11 0.280 L 25.53 26.67 1.005 1.050 M 3.05 3.30 0.120 0.130 Doc ID 15486 Rev 3 9/13 Package mechanical data Figure 5. SD4931 Package dimensions Controlling Dimension: Inches 10/13 1011000D Doc ID 15486 Rev 3 SD4931 5 Marking, packing and shipping specifications Marking, packing and shipping specifications Table 8. Packing and shipping specifications Order code Packaging Pcs per tray Dry pack humidity VGS sort Lot code SD4931 Plastic tray 25 < 10 % Not mixed Not mixed Figure 6. Marking layout Table 9. Marking specifications Symbol Description X VGS sort CZ Assy plant xxx Last 3 digit of diffusion lot VY Diffusion plant MAR Country of origin CZ Test and finishing plant y Assy year yy Assy week Doc ID 15486 Rev 3 11/13 Revision history 6 SD4931 Revision history Table 10. 12/13 Document revision history Date Revision Changes 17-Mar-2008 1 Initial release. 14-Jan-2010 2 Updated test conditions in Table 5: Dynamic. 23-May-2011 3 Inserted Figure 2: Transient thermal impedance, Figure 3: Transient thermal impedance model and Section 5: Marking, packing and shipping specifications. Doc ID 15486 Rev 3 SD4931 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. 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