RECTRON 1N4448 SEMICONDUCTOR TECHNICAL SPECIFICATION SILICON PLANAR ZENER DIODE FEATURES * Fast Switching Device(TRR<4.0nS) * DO-35 Package (JEDEC) * Through-Hole Device Type Mounting * Hermetically Sealed Glass * Compression Bonded Construction * All external surfaces are corrosion resistant and leads are readily solderable DO-35 .022 (0.56) DIA. .018 (0.46) 1.02 (26.0) MIN. .165 (4.2) MAX. .079 (2.0) MAX. MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS DIA. 1.02 (26.0) MIN. o Ratings at 25 C ambient temperature unless otherwise specified. Dimensions in inches and (millimeters) o MAXIMUM RATINGES ( @ TA = 25 C unless otherwise noted ) SYMBOL 1N4448 UNITS Peak Reverse Voltage Vrm 100 Volts Maximum DC Blocking Voltage VDc 70 Volts Maximum Forward Continuous Current IFM 100 mAmps Maximum Average Forward Rectified Current IO 150 mAmps Non-Repetitive Peak Forward Surge Current IFSM 1 Amps Typical Reverse Recovery Time(I F=I R=30mA,I rr =0.1X IR,R L=100Ω) T rr 4 nS Typical Junction Capacitance(V R=0V,f=1MHz) CT 4 pF Maximum Power Dissipation PD 500 mW TJ,TSTG -65 to + 200 SYMBOL 1N4448 RATINGS Operating and Storage Temperature Range O C ELECTRICAL CHARACTERISTICS (@TA=25 C unless otherwise noted) O CHARACTERISTICS Maximum Instantaneous Forward Voltage Maximum Instantaneous Reverse Current @I F =5mA @I F =100mA @V R =20V @V R =75V VF IR 0.72 1.0 UNITS Volts 25 nAmps 5 uAmps 2012-9 1000 10,000 IR, LEAKAGE CURRENT (nA) IF, INSTANTANEOUS FORWARD CURRENT (mA) RATING AND CHARACTERISTICS CURVES ( 1N4448 ) 100 10 1.0 0.1 1000 100 10 VR =20V 1 0.01 0 1 VF, INSTANTANEOUS FORWARD VOLTAGE(V) Figure1 Forward Characteristics 2 0 100 200 TJ, JUNCTION TEMPERATURE (OC) Figure2 Leakage Current vs Junction Temperature RECTRON RECTRON Attachment information about 1N4448 1. Internal Circuit Anode Cathode 2. Marking on the body Cathode Band 1N 44 48 Part No PACKAGING OF DIODE BULK PACK PACKAGE PACKING CODE DO-35 -B DO-41G -B INNER BOX SIZE CARTON SIZE (mm) (mm) 10,000 240*100*100 2,500 240*100*100 EA PER BOX EA PER CARTON GROSS WEIGHT(Kg) 410*350*275 120,000 21.5 410*350*275 50,000 15.6 REEL PACK PACKAGE PACKING CODE REEL ( EA ) COMPONENT TAPE SPACE SPACE(mm) (mm) REEL DIA (mm) CARTON SIZE (mm) EA PER CARTON GROSS WEIGHT(Kg) DO-35 -T 10,000 5.0 52 356 370*370*420 50,000 11.00 DO-41G -T 5,000 5.0 52 356 370*370*420 25,000 11.50 SOT-23/-3L -T 3,000 --- --- 178 438*438*220 180,000 --- LL-34 -T 2,500 --- --- 178 385*270*220 90,000 7.50 SOD-123 -T 3,000 --- --- 178 438*438*220 180,000 9.00 SOD-323 -T 3,000 --- --- 178 438*438*220 180,000 9.00 SOT-323 -T 3,000 --- --- 178 438*438*220 180,000 9.00 LL-41 -W 5,000 --- --- 330 370*370*420 50,000 6.6 BOX SIZE CARTON CARTON GROSS (mm) SIZE(mm) ( EA ) WEIGHT (Kg) AMMO PACK PACKAGE PACKING REEL COMPONENT TAPE SPACE CODE ( EA ) SPACE(mm) (mm) DO-35 -F 5,000 5.0 52 250*80*80 425*270*220 100,000 20.00 DO-41G -F 3,000 5.0 52 250*80*80 425*270*220 60,000 20.00 Visit http:// www.rectron.com for complete datasheets D36 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