MC4148 / MCL4448 SMALL SIGNAL SWITCHING DIODE FEATURES MICRO-MELF Silicon epitaxial planar diode ● Fast switching diodes ● 500mw power dissipation ● High temperature soldering guaranteed 250℃/10S at terminals .040(1.0) .048(1.2)DIA. ● MECHANICAL DATA .043(1.1) Case: MICRO MELF, Glass Terminals: Solderable per MIL-STD-750, Method 2026 Polarity : Color band denotes cathode end Mounting Position: Any Weight :0.011 grams .008(0.2) .008(0.2) .079(2.0) .071(1.8) Dimensions in inches and (millimeters) Maximum Ratings ( TA=25 C Unless otherwise noted) SYMBOL PARAMETER Peak Reverse Voltage MCL4148 / MCL4448 UNITS VR M 100 V C And f >50Hz IF (A V ) 150 mA C IF S M 500 mA PT O T 500 mW Maximum Forward Voltage at IF =10mA VF 1.0 V Maximum Leakage Current at VR =20V at VR =75V at VR =20V ,TJ= 150O C IR Maximum Capacitance at VF =VR =0 CJ 4 pF Maximum Reverse Recovery Time From IF =-IR =10mA to IR R =-1mA ,VR =6V RL =100 Ω trr 4 ns Typical Thermal Resistance RθJ A 300 Junction Temperature and Storage Temperature Range TJ ,TS -65 to +175 Maximum Average Forward Current at Ta=25 Surge Forward Current at t < 1s and Tj= =25 Power Dissipation at Tamb= 25 O O O C NOTE: 1. CJ at VR=0, f=1MHZ 2. From IF=10mA to IR=1mA, VR=6Volts, RL=100Ω nA µA µA 25 5 50 O C/W O C MCL4148 / MCL4448 FIG. 2-REVERSE CURRENT VERSUS CONTINUOUS REVERSE VOLTAGE (TYPICAL VALUES) FIG. 1-ADMISSIBLE POWER DISSIPATION VERSUS AMBIENT TEMPERATURE 800 INSTANTANEOUS REVERSE CURRENT, MICROAMPERES P,POWER DISSIPATION,MILLIWATTS RATINGS AND CHARACTERISTIC CURVES 700 600 500 400 300 200 100 0 0 100 200℃ AMBIENT TEMPERATURE,℃ 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 tp,PULSE DURATION,ms 10 100 1000ms