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| Surface Mount Switching Diode COMCHIP www.comchip.com.tw CDST4148, CDST4448 Voltage: 75 Volts Power: 350 mWatts Feature Fast switching speed Surface mount package Ideally Suited for Automatic insertion Electrically Identical to Standard JEDEC High Conductance .119 (3.0) .110 (2.8) SOT-23 .020 (0.5) Top View .056 (1.40) .047 (1.20) 3 Mechanical Data Case: SOT-23 Plastic Package Terminals: Solderable per MIL-STD-202, Method 208 Approx. Weight: 0.008 gram SINGLE 1 2 .006 (0.15)max. .006 (0.15) .002 (0.05) .037(0.95) .037(0.95) .020 (0.5) .020 (0.5) .103 (2.6) .086 (2.2) Dimensions in inches (millimeters) CDST4148, CDST4448 Maximum Ratings and Electrical Characterics Parameter Reverse Voltage Peak Reverse Voltage Rectified Current (Average), Half Wave Rectification with Resistive Load and f >=50 Hz Peak Forward Surge Current, 8.3ms single half sine-wave superimposed on rated load (JEDEC method) Power Dissipation Derate Above 25C Maximum Forward Voltage @ IF=5mA @ IF=10mA Maximum DC Reverse Current at Rated DC Blocking Voltage TJ= 25C Typical Junction Capacitance( Notes1) Maximum Reverse Recovery (Notes2) Maximum Thermal Resistance Storage Temperature Range (1) CJ at VR = 0, f = 1MHZ (2) From IF = 10mA to I R = 1mA, V R = 6Volts, RL = 100 Symbol VR VRM IO IFSM PTOT VF IR CJ TRR R JA CDST4148 75 100 150 2.0 350 1.0 2.5 4.0 4.0 CDST4448 75 100 150 4.0 0.72 1.0 2.5 4.0 4.0 .044 (1.10) .035 (0.90) Units V V mA A mW V uA pF ns C/W C 357 -55 to +125 TJ MDS0210008B Page 1 Surface Mount Switching Diode COMCHIP www.comchip.com.tw RATING AND CHARACTERISTIC CURVES (CDST4148) 10 10 TA=150OC FORWARD CURRENT, mA REVERSE CURRENT, mA 1.0 TA=125OC 1.0 TA=85OC 0.1 0.1 TA=55OC 0.01 TA=25OC 0.01 0.2 0.001 0.4 0.6 0.8 1.0 1.2 0 10 20 30 40 50 FORWARD VOLTAGE, Volts REVERSE VOLTAGE, Volts 6.0 DIODE CAPACITANCE, pF 4.5 3.5 60 W VRF=2V 2nF 5k W Vo 1.5 0 0 2 4 6 8 RECTIFICATION EFFCIENCY MEASUREMENT CIRCUIT REVERSE VOLTAGE, Volts TYPICAL CAPATICANCE MDS0210008B Page 2 |
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