CHENMKO ENTERPRISE CO.,LTD CH490DPT SURFACE MOUNT SCHOTTKY BARRIER DIODE VOLTAGE 40 Volts CURRENT 1 Ampere APPLICATION * Low power recification for switching power supply SOT-23 .019 (0.50) .041 (1.05) .033 (0.85) * Silicon epitaxial planar .066 (1.70) CONSTRUCTION .110 (2.80) .082 (2.10) .119 (3.04) (1) MARKING * 10F CIRCUIT .103 (2.64) .086 (2.20) .028 (0.70) .020 (0.50) .045 (1.15) .033 (0.85) (1) (2) (2) .007 (0.177) .055 (1.40) .047 (1.20) (3) Dimensions in inches and (millimeters) (3) .002 (0.05) * Small surface mounting dual element linear type. (SOT-23) * Ultra low VF. (Vf=0.50V typ. at 1A) * IF=1.0A guaranteed despite size .018 (0.30) FEATURE SOT-23 MAXIMUM RATINGES ( At TA = 25oC unless otherwise noted ) SYMBOL CH490DPT UNITS Maximum Recurrent Peak Reverse Voltage RATINGS VRRM 40 Volts Maximum RMS Voltage VRMS 28 Volts Maximum DC Blocking Voltage VDC 40 Volts IO 1.0 Amps IFSM 3.0 Amps pF Maximum Average Forward Rectified Current Peak Forward Surge Current at 8.3 mSec single half sine-wave Typical Junction Capacitance between Terminal (Note 1) CJ 30 Maximum Operating Temperature Range TJ +125 o C TSTG -40 to +125 o C Storage Temperature Range ELECTRICAL CHARACTERISTICS ( At TA = 25oC unless otherwise noted ) SYMBOL CH490DPT UNITS Maximum Instantaneous Forward Voltage at IF= 1A CHARACTERISTICS VF 0.53 Volts Maximum Average Reverse Current at VR= 30V IR 100 uAmps NOTES : 1. Measured at 1.0 MHZ and applied reverse voltage of 10 volts. 2. ESD sensitive product handling required. 2002-5 RATING CHARACTERISTIC CURVES ( CH490DPT ) FIG. 2 - REVERSE CHARACTERISTICS FIG. 1 - FORWARD CHARACTERISTICS 1000 REVERSE CURRENT, (mA) -25 o C =1 Ta 10m 25 C o o 75 100m C 1 25 o C FORWARD CURRENT, (A) 10 1m o Ta=125 C 10 o 75 C 1 o 25 C 100u 10u o -25 C 1u 0.1u 0.1m 0 0.1 0.2 0.3 0.4 0.5 0.6 FORWARD VOLTAGE, (V) FIG. 3 - TYPICAL JUNCTION CAPACITANCE f=1MHz 1000 100 10 1 0 5 10 15 20 25 30 REVERSE VOLTAGE, (V) 0 10 20 30 40 50 REVERSE VOLTAGE, (V) 10000 JUNCTION CAPACITANCE , (pF) 100 35 40 60 70