KI SEMICONDUCTOR CO. SMALL SIGNAL SWITCHING DIODE 1SS244 REVERSE VOLTAGE : 250 V CURRENT: 0.2 A DO - 34(GLASS) FEATURES Glass sealed envelope. (MSD) VRM=250V guaranteed High reliability MECHANICAL DATA Case: DO-34, glass case Polarity: Color band denotes cathode Weight: 0.004 ounces, 0.13 grams MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Ratings at 25 ambient temperature unless otherwise specified. Single phase,half wave,60 Hz,resistive or inductive load. For capacitive load,derate by 20%. 1SS244 UNITS Maximum recurrent peak reverse voltage VRRM 250 V Maximum DC blocking voltage VDC 220 V IF(AV) 0.2 A IFSM 625.0 mA VF 1.5 V Maximum average forw ard rectified current 9.5mm lead length, @TA =75 Peak forw ard surge current 10ms single half-sine-w ave superimposed on rated load @TJ =125 Maximum instantaneous f orw ard voltage @ 0.2 A Maximum reverse current at rated DC blocking voltage Reverse recovery time @TA=25 @TA=150 @TA=25 Operating junction temperature range Storage temperature range 10.0 IR 50.0 trr 75 TJ - 55 ---- + 175 TSTG - 55 ---- + 175 1 μA ns 1SS244 FIG.2 -- REVERSE CHARACTERISTICS FIG.1 --FORWARD CHARACTERISTICS 10 REVERSE CURRENT, A 100 20 10 2 0.1 0 0.2 0.4 -25 75 TA= 125 1 25 FORWARD CURRENT, mA 200 0.6 0.8 1.0 1.2 1.4 1.6 100 1 75 50 100n TA=25 10n 0 1.8 50 1.1 1.0 0.9 0.8 0.7 1 0 2 3 200 250 300 350 FIG.4 -- REVERSE RECOVERY TIME CHARACTERISTICS FIG.3 -- CAPACITANCE BETWEEN TERMINALS CCCCCC CHARACTERISTICS 0.6 150 FORWARD VOLTAGE, V REVERSE RECOVERY TIME, ns CAPACITANCE BETWEEN TERMINALS, pF FORWARD VOLTAGE, V 100 4 5 REVERSE VOLTAGE, V 140 IR=10mA Irr=1mA 120 100 80 60 40 20 0 0 5 10 15 20 25 30 35 FORWARD CURRENT,mA FIG.6 -- REVERSE RECOVERY TIME (trr) MEASUREMENT CIRCUIT FIG.5 -- SURGE CURRENT CHARACTERISTICS 14 SURGE CURRENT, A 12 10 8 5K 6 PULSE GENERATOR OUTPUT 50 4 2 0 0.1 1 10 100 1000 PULSE WIDTH, ms 2 50 SAMPLING OSCILLOSCOPE