WEITRON 1N4448W Surface Mount Switching Diode P b Lead(Pb)-Free SWITCHING DIODE 250m AMPERES Features: * High Conductance * Fast Switching Speed * Surface Mount Package Ideally Suited for Automatic Insertion * For General Purpose Switching Application 100 VOLTS 1 Mechanical Data: * Case: SOD-323, Molded Plastic * Terminals: Plated Leads Solderable per MIL-STD-202, Method 208 * Polarity: Cathode Band * Weight: 0.01grams (approx) 2 SOD-123 SOD-123 Outline Dimensions Unit:mm SOD-123 Dim A B C D E H J K Min Max 2.55 2.85 1.40 1.80 0.95 1.35 0.50 0.70 0.30 REF 0.10 0.15 3.55 3.85 PIN 1. CATHODE 2. ANODE WEITRON http://www.weitron.com.tw 1/3 02-Oct-06 1N4448W Maximum Ratings WEITRON (TA=25˚C 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 400 mW RθJA 315 K/W TJ + 150 °C Tstg -65 to +150 °C Reverse Voltage Nop-Reptitive Peak Peak Repetitive Reverse Voltage Working Peak Reverse Voltage DC Blocking Vlotage RMS Reverse Voltage Non-Repetitive Peak Forward Surge Current @ t=1.0µs @ t=1.0s Total Device Dissipation Thermal Resistance Junction to Ambient Air Junction and Storage Temperature Storage Temperature Electrical Characteristics (TA=25˚C Unless Otherwise note) Characterictics Symbol Min Max Unit VR - 75 ns VF 0.62 - 0.72 0.855 1.00 1.25 V - 2.5 25 µA nA Off Characteristics Reverse Breakdown Voltage I R=10µA Forward Voltage I F=5.0mA I F=10mA I F=100mA I F=150mA Reverse Voltage Leakage Current VR=75V VR=20V IR Diode Capacitance VR=0, f=1.0MHz CT - 4.0 pF Revarse Recover Time IF=IR=10mA, Irr=0.1 x IR, RL=100Ω trr - 4.0 ns Device Marking Item 1N4448W WEITRON http://www.weitron.com.tw Marking Eqivalent Circuitdiagram T5 1 2/3 2 02-Oct-06 1N4448W Typical Characteristics 100 400 IF, F RWARD CURRENT (mA) Pd, POWER DISSIPATION (mW) 500 300 200 100 0 0 50 25 75 100 125 Ta = 50°C Ta = 85°C Ta = -30°C TA, AMBIENT TEMPERATURE (°C) Fig. 1 Power Derating Curve 200 400 600 1000 800 2.5 trr, REVERSE RECOVERY TIME (nS) IR, REVERSE CURRENT (µA) 0 VF, FORWARD VOLTAGE (mV) Fig. 2 Typical Forward Characteristics 10.0 Ta = 100°C 1.0 Ta = 75°C 0.10 Ta = 50°C Ta = 25°C Ta = 0°C 0.01 Ta = -30°C 0.001 Ta = 0°C 1 0.1 150 Ta = 25°C 10 2.0 1.5 1.0 0.5 0 0 60 40 20 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 02-Oct-06