This part is a kind of semiconductor called CH402DPT.

Function of this product has SCHOTTKY BARRIER DIODE.

Manufacturers : Chenmko Enterprise

Image and pinout :

Some of the text within the PDF file :

www.DataSheet.co.kr CHENMKO ENTERPRISE CO.,LTD SURFACE MOUNT SCHOTTKY BARRIER DIODE VOLTAGE 30 Volts CURRENT 0.3 Ampere APPLICATION * High frequency rectification for switching power supply CH402DPT FEATURE .041 (1.05) .033 (0.85) SOT-23 (1) .110 (2.80) .082 (2.10) .066 (1.70) .119 (3.04) (3) CONSTRUCTION * Silicon epitaxial planar (2) MARKING * 05K .055 (1.40) .047 (1.20) .103 (2.64) .086 (2.20) .028 (0.70) .020 (0.50) .007 (0.177) .018 (0.30) .002 (0.05) CIRCUIT (2) (1) .045 (1.15) .033 (0.85) .019 (0.50) * Small surface mounting type. (SOT-23) * Low IR. (IR=10uA Typ.) * High reliability (3) Dimensions in inches and (millimeters) SOT-23 MAXIMUM RATINGES ( At TA = 25oC unless otherwise noted ) RATINGS Maximum Recurrent Peak Reverse Voltage Maximum RMS Voltage Ma [ ... ]

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