1N4448WS SMALL SIGNAL DIODE VOLTAGE RANGE 75 Volts CURRENT 250 mAmpere FEATURES * Fast Switching Speed * Surface Mount Package Ideally Suited for Automatic Insertion * For General Purpose Switching Applicationgs * High Conductance SOD-323 MECHANICAL DATA Case: Molded plastic Epoxy: UL 94V-O rate flame retardant Lead: MIL-STD-202E method 208C guaranteed Mounting position: Any Weight: 0.004 grams .071(1.800) .063(1.600) MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS .006(.150) .014(.350) .010(.250) .055(1.400) .047(1.200) .106(2.700) .098(2.500) .003(.080) * * * * * MAX.039(1.000) Ratings at 25 OC ambient temperature unless otherwise specified. Single phase, half wave, 60 Hz, resistive or inductive load. REF .019(0.475) .004(.100) .000(.000) For capacitive load, derate current by 20%. Dimensions in inches and (millimeters) MAXIMUM RATINGS (@T A =25 OC unless otherwise noted) RATINGS Non-Repetitive Peak Reverse Voltage Maximum Repetitive Peak Reverse Voltage Maximum Working Peak reverse Voltage Maximum DC Blocking Voltage Maximum RMS Voltage Maximum Forward Comtinuous Current Maximum Average Forward Rectified Current Non-Repetitive Peak Forward Surge Current @t=1.0uS @t=1.0S SYMBOL 1N4448WS UNITS VRM VRRM VRWM VR VRMS IFM IO 100 Volts 75 Volts 53 500 250 mAmps mAmps Volts IFSM 4.0 2.0 Amps Typical Reverse Recovery Time T rr 4 nS Typical Junction Capacitance CJ 4 pF Maximum Power Dissipation PD RqJA 200 mW Typical Thermal Resistance Operating and Storage Temperature Range TJ,TSTG ELECTRICAL CHARACTERISTICS (@T A =25 OC unless otherwise noted) SYMBOL CHARACTERISTICS Maximum Instantaneous Forward Voltage Maximum Instantaneous Peverse Current @IF=1.0mA @IF=10mA @IF=50mA @IF=150mA @VR=20V @VR=75V NOTE : "Fully ROHS Compliant", "100% Sn plating (Pb-free)". VF IR 315 -65 to + 150 O C/W O C 1N4448WS UNITS 0.715 0.855 1.0 1.25 Volts 25 nAmps 2.5 uAmps VC 2008-02 RATING AND CHARACTERISTICS CURVES ( 1N4448WS ) 100 IF, FORWARD CURRENT (mA) Pd, POWER DISSIPATION (mW) 300 200 100 0 0 50 25 75 125 100 Ta=50OC Ta=85OC 1 0 600 800 1000 VF, FORWARD VOLTAGE (mV) Figure.1 Power Derating Curve Figure.2 Typical Forward Chatacteristics 10.0 trr, REVERSE RECOVERY TIME(nS) 2.5 Ta=100OC 1.0 Ta=75OC 0.10 Ta=50OC Ta=25OC Ta=0 C O 0.01 Ta=-30 C O 0 20 60 40 2.0 1.5 1.0 0.5 0 80 VR, REVERSE VOLTAGE (V) Figure.3 Typical Reverse Characteristics 2 0 4 3 2 1 0 1 8 10 Figure.4 Reverse Recovery Time vs Forward Current f=1 MHz 0 6 IF, FORWARD CURRENT (mA) 4 CT, TOTAL CAPCITANCE (pF) IR, LEAKAGE CURRENT (A) 400 200 TA, AMBIENT TEMPERATURE ( C) O 0.001 Ta=0OC Ta=30OC 0.1 150 Ta=25OC 10 2 3 4 IF, FORWARD CURRENT (mA) 5 6 Figure.5 Total Capacicance vs Reverse Voltage DISCLAIMER NOTICE Rectron Inc reserves the right to make changes without notice to any product specification herein, to make corrections, modifications, enhancements or other changes. Rectron Inc or anyone on its behalf assumes no responsibility or liability for any errors or inaccuracies. Data sheet specifications and its information contained are intended to provide a product description only. "Typical" parameters which may be included on RECTRON data sheets and/ or specifications can and do vary in different applications and actual performance may vary over time. Rectron Inc does not assume any liability arising out of the application or use of any product or circuit. Rectron products are not designed, intended or authorized for use in medical, life-saving implant or other applications intended for life-sustaining or other related applications where a failure or malfunction of component or circuitry may directly or indirectly cause injury or threaten a life without expressed written approval of Rectron Inc. Customers using or selling Rectron components for use in such applications do so at their own risk and shall agree to fully indemnify Rectron Inc and its subsidiaries harmless against all claims, damages and expenditures. RECTRON