WEITRON MMBL4448H 1N4448WS Surface Mount Switching Diode P b Lead(Pb)-Free SWITCHING DIODE 250m AMPERES Features: * Fast Switching Speed * Surface Mount Package Ideally Suited for Automatic Insertion * For General Purpose Switching Applications * High Conductance 100 VOLTS 1 Mechanical Data: * Case: SOD-323, Molded Plastic * Terminals: Plated Leads Solderable per MIL-STD-202, Method 208 * Polarity: Cathode Band * Weight: 0.004 grams (approx) 2 SOD-323 SOD-323 Outline Dimensions Unit:mm Dim A B C D E H J K MILLMETERS Min Max 1.60 1.80 1.35 1.15 1.00 0.80 0.40 0.25 0.15REF 0.10 0.00 0.089 0.377 2.30 2.70 PIN 1. CATHODE 2. ANODE WEITRON http://www.weitron.com.tw 1/3 26-Jul-06 MMBL4448H 1N4448WS WEITRON Maximum Ratings (TA=25C Unless Otherwise note) Rating Symbol Value Unit VRM 100 V VRRM VRWM VR 75 V VR(RMS) 53 V Forward Continuous Current IFM 500 mA Average Recfified Output Current IO 250 mA IFSM 4.0 2.0 A PD 200 mW RJA 315 K/W TJ +150 C Tstg -65 to +150 C Non-Repetitive Peak Reverse Voltage Peak Repetitive Reverse Voltage Working Peak Reverse Voltage DC Blocking Vlotage RMS Reverse Voltage Non-Repetitive Peak Forward Surge Current @ t=1.0s @ t=1.0s Total Device Dissipation Thermal Resistance Junction to Ambient Junction and Storage Temperature Storage Temperature Electrical Characteristics (TA=25C Unless Otherwise note) Characterictics Symbol Min Max Unit V(BR)R 75 - V VF 0.62 - 0.72 0.855 1.00 1.25 V IR - 2.5 25 A nA CT - 4.0 pF trr - 4.0 ns Off Characteristics Reverse Voltage Leakage Current IR=10A Forward Voltage IF=5mA IF=10mA IF=100mA IF=150mA Reverse Voltage Leakage Current VR=75V VR=20V Diode Capacitance VR=0, f=1.0MHz Revarse Recover Time IF=IR=10mA, Irr=0.1 x IR, RL=100 Device Marking Item Marking 1N4448WS , MMBL4448H T5 WEITRON http://www.weitron.com.tw Eqivalent Circuitdiagram 1 2/3 2 26-Jul-06 MMBL4448H 1N4448WS WEITRON Typical Characteristics 100 IF, FORWARD CURRENT (mA) Pd, POWER DISSIPATION (mW) 300 200 100 0 0 50 25 75 125 125 Ta = 25C 10 Ta = 50C Ta = 85C Ta = -30C 0.1 150 0 200 400 600 800 1000 VF, FORWARD VOLTAGE (mV) Fig. 2 Typical Forward Characteristics AMBIENT TEMPERATURE (C) Fig. 1 Forward Current Derating Curve 2.5 trr, REVERSE RECOVERY TIME (nS) 10.0 Ta = 100C 1.0 Ta = 75C Ta = 50C 0.10 Ta = 25C Ta = 0C 0.01 Ta = -30C 0.001 Ta = 0C 1 0 60 40 20 2.0 1.5 1.0 0.5 0 0 80 2 4 6 8 10 IF, FORWARD CURRENT (mA) Fig. 4 Reverse Recovery Time vs. Forward Current VR, REVERSE VOLTAGE (V) Fig. 3 Typical Reverse Characteristics 4 CT, TOTAL CAPACITANCE (pF) f = 1MHz 3 2 1 0 0 1 2 3 4 5 6 VR, REVERSE VOLTAGE (V) Fig. 5 Total Capacitance vs. Reverse Voltage WEITRON http://www.weitron.com.tw 3/3 26-Jul-06