. Electronic Components Datasheets sgsif344-444 free download

File name sgsif344-444.pdf

SGSIF344 SGSIF444 HIGH VOLTAGE FAST-SWITCHING NPN POWER TRANSISTORS s SGSIF344 IS SGS-THOMSON PREFERRED SALESTYPE s HIGH VOLTAGE CAPABILITY s VERY HIGH SWITCHING SPEED s LOW BASE-DRIVE REQUIREMENTS APPLICATIONS: s SWITCH MODE POWER SUPPLIES s HORIZONTAL DEFLECTION FOR COLOUR 3 3 2 2 TVS AND MONITORS 1 1 DESCRIPTION The SGSIF344 and SGSIF444 are manufactured ISOWATT220 ISOWATT218 using Multiepitaxial Mesa technology for cost-effective high performance and uses a Hollow Emitter structure to enhance switching speeds. These transistors are available in ISOWATT220 and ISOWATT218 plastic package respectively. INTERNAL SCHEMATIC DIAGRAM The SGSF series is designed for high speed switching applications such as power supplies and horizontal deflection circuits in TVs and monitors. ABSOLUTE MAXIMUM RATINGS Symb ol Parameter Valu e Un it SGSIF344 SGSIF 444 V CES Collector-Emitter Voltage (VBE = 0) 1200 V V CEO Collector-Emitter Voltage (IB = 0) 600 V VEBO Emitter-Base Voltage (IC = 0) 7 V IC Collector Current 7 A I CM Collector Peak Current (tp < 5 ms) 12 A IB Base Current 5 A I BM Base Peak Current (tp < 5 ms) 8 A o P tot T otal Dissipation at Tc = 25 C 40 50 W o T s tg Storage Temperature -65 to 150 C o Tj Max. Operating Junction T emperature 150 C June 1997 1/7 SGSIF344 / SGSIF444 THERMAL DATA o