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| WEITRON Surface Mount Switching Diode P b Lead(Pb)-Free Features: * Fast Switching Speed * Surface Mount Package Ideally Suited for Automatic Insertion * For General Purpose Switching Applications * High Conductance 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) MMBL4448H 1N4448WS SWITCHING DIODE 250m AMPERES 100 VOLTS 1 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 http://www.weitron.com.tw WEITRON 1/3 26-Jul-06 MMBL4448H 1N4448WS Maximum Ratings (TA=25C Unless Otherwise note) Rating Non-Repetitive Peak Reverse Voltage Peak Repetitive Reverse Voltage Working Peak Reverse Voltage DC Blocking Vlotage RMS Reverse Voltage Forward Continuous Current Average Recfified Output Current 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 WEITRON Symbol VRM VRRM VRWM VR VR(RMS) IFM IO IFSM PD RJA TJ Tstg Value 100 75 53 500 250 4.0 2.0 200 315 +150 -65 to +150 Unit V V V mA mA A mW K/W C C Electrical Characteristics (TA=25C Unless Otherwise note) Characterictics Symbol Min Max Unit Off Characteristics Reverse Voltage Leakage Current IR=10A Forward Voltage IF=5mA IF=10mA IF=100mA IF=150mA V(BR)R 75 0.62 - 0.72 0.855 1.00 1.25 2.5 25 4.0 4.0 V VF V 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 IR CT trr A nA pF ns Device Marking Item 1N4448WS , MMBL4448H Marking T5 Eqivalent Circuitdiagram 1 2 http://www.weitron.com.tw WEITRON 2/3 26-Jul-06 MMBL4448H 1N4448WS WEITRON 100 Typical Characteristics 300 Pd, POWER DISSIPATION (mW) IF, FORWARD CURRENT (mA) 200 10 Ta = 25C Ta = 50C 100 Ta = 85C 1 Ta = 0C Ta = -30C 0 0 25 50 75 125 125 150 0.1 0 200 400 600 800 1000 AMBIENT TEMPERATURE (C) Fig. 1 Forward Current Derating Curve 10.0 2.5 VF, FORWARD VOLTAGE (mV) Fig. 2 Typical Forward Characteristics trr, REVERSE RECOVERY TIME (nS) 1.0 Ta = 100C Ta = 75C 2.0 1.5 0.10 Ta = 50C Ta = 25C Ta = 0C Ta = -30C 1.0 0.01 0.5 0.001 0 0 0 20 40 60 80 2 4 6 8 10 VR, REVERSE VOLTAGE (V) Fig. 3 Typical Reverse Characteristics 4 IF, FORWARD CURRENT (mA) Fig. 4 Reverse Recovery Time vs. Forward Current f = 1MHz CT, TOTAL CAPACITANCE (pF) 3 2 1 0 0 1 2 3 4 5 6 VR, REVERSE VOLTAGE (V) Fig. 5 Total Capacitance vs. Reverse Voltage http://www.weitron.com.tw WEITRON 3/3 26-Jul-06 |
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