LL4148/MM4148 SMALL SIGNAL SWITCHING DIODE FEATURES MINI MELF Silicon epitaxial planar diode Fast switching diodes 500mw power dissipation High temperature soldering guaranteed 250 C/10S at terminals 0.063(1.6) 0.055(1.4) DIA. 0.020(0.5) 0.012(0.3) 0.020(0.5) 0.012(0.3) 0.146(3.7) 0.130(3.3) MECHANICAL DATA Case: MINI MELF glass sealed envelope. Terminals: Plated axial leads, solderable per MIL-STD-750, Method 2026 Polarity: Color band denotes cathode end Mounting Position: Any Weight:0.002 ounce, 0.05 grams Dimensions in inches and (millimeters) MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Ratings at 25 C ambient temperature unless otherwise specified. Single phase half-wave 60Hz,resistive or inductive load,for capacitive load current derate by 20%. SYMBOLS LL4148/MM4148 UNITS VRRM VRMS 100 75 VOLTS VOLTS I(AV) 150 mAmps IFSM 500 mAmps VF 1.0 Volts IR 5.0 50 uA Maximum repetitive peak reverse voltage Maximum RMS voltage Maximum average forward rectified current 0.375”(9.5mm) lead length at TA=75 C Peak forward surge current 8.3ms single half sine-wave superimposed on rated load (JEDEC Method) Maximum instantaneous forward voltage at 10mA Maximum DC reverse current TA=25 C VR=75V at rated DC blocking voltage TA=100 C VR=20V Maximum reverse recovery time (NOTE 1) Typical junction capacitance (NOTE 2) Operating junction and storage temperature range NOTES: 1.Test condition:IF=10mA,IR=10mA,Irr=1mA,VR=6V,RL=100W. 2.Measured at 1.0 MHz and applied reverse voltage of 4.0 volts trr 4.0 ns CJ TJ,TSTG 4.0 -65 to +200 pF C www.shunyegroup.com.cn RATINGS AND CHARACTERISTIC CURVES LL4148/MM4148 FIG. 2-REVERSE CURRENT VERSUS CONTINUOUS REVERSE VOLTAGE (TYPICAL VALUES) 800 INSTANTANEOUS REVERSE CURRENT, MICROAMPERES P,POWER DISSIPATION,MILLIWATTS FIG. 1-ADMISSIBLE POWER DISSIPATION VERSUS AMBIENT TEMPERATURE 700 600 500 400 300 200 100 0 0 200 C 100 AMBIENT TEMPERATURE, C 1 0.1 0.01 TJ=25 C 0.001 0.0001 40 60 80 100 120 PERCENT OF PEAK REVERSE VOLTAGE,% FIG. 3-FORWARD CHARACTERISTICS FIG. 4-RELATIVE CAPACTANCE VERSUS REVERSE VOLTAGE Ctot(vR) RELATIVE CAPACTANCE Ctot(0v) 14 12 10 8 6 4 2 0 0 1 2V INSTANTANEOUS FORWARD VOLEAGE, V0LTS 1.2 1.0 0.8 0.6 0.4 0 5 10V REVERSE VOLTAGE,VOLTS. FIG. 5-ADMISSIBLE REPETITIVE PEAK FORWARD CURRENT VERSUS PULSE DURATION IFRM,PEAK FORWARD CURRENT,AMPERES INSTANTANEOUS FORWARD CURRENT,MILLIAMPERES 16 100 n=tp/T V=tp/T T=1/fp tp 10 IFRM n=0 0.1 T 0.2 1 0.5 0.1 0.01 0.1 1 10 tp,PULSE DURATION,ms www.shunyegroup.com.cn 100 1000ms