SMD Schottky Barrier Diodes CDBQT140-HF Forward current: 1.0 A Reverse voltage: 40 V RoHS Device Halogen Free DFN1006-2L 0.043(1.08) 0.037(0.95) Features 0.027(0.68) 0.022(0.55) - Low forward voltage drop. - Very small SMD package. 0.020(0.50) 0.017(0.44) 0.002(0.05) Mechanical Data Max. 0.026(0.65) Typ. - Case: DFN1006-2L, molded plastic. 0.024(0.60) 0.016(0.40) 0.012(0.30) 0.008(0.20) Circuit Diagram Dimensions in inches and (millimeter) Maximum Ratings (at TA=25C unless otherwise noted) Symbol Parameter Value Unit Peak repetitive reverse voltage VRRM 40 V Working peak reverse voltage VRWM RMS reverse voltage VR(RMS) 28 V Average rectied output current IO 1 A Non-repetitive peak forward surge current t=8.3ms IFSM 7 A Power dissipation (Note 1) PD 500 mW Thermal resistance from junction to ambient R JA 250 C/W Operating junction temperature range TJ 150 C Storage temperature range TSTG -55 ~ +150 C Notes: 1. Device mounted on a 1 in. ceramic PCB which spread 2 ounces of copper. Company reserves the right to improve product design , functions and reliability without notice. REV:A SP-JB029 Page 1 Comchip Technology CO., LTD.SMD Schottky Barrier Diodes Electrical Characteristics (at TA=25C unless otherwise noted) Parameter Conditions Symbol Min. Typ. Max. Unit Reverse breakdown voltage V(BR) IR = 1mA 40 V A Reverse current VR = 40V IR 10 40 IF = 0.1A 0.35 0.38 IF = 0.2A 0.37 0.40 Forward voltage IF = 0.5A VF 0.42 0.49 V IF = 0.7A 0.47 0.55 IF = 1A 0.51 0.61 Total capacitance VR = 10V, f = 1MHz pF Ctot 19 Rating and Characteristic Curves (CDBQT140-HF) Fig.1 - Forward Characteristics Fig.2 - Reverse Characteristics 1 10000 Ta=125C 1000 Ta=125C 100 Ta=25C 0.1 Ta=25C 10 1 0.01 0.1 0 200 400 600 800 1000 0 5 10 15 20 25 30 35 40 Forward Voltage, VF (mW) Reverse Voltage, VR (V) Fig.3 - Capacitance Characteristic 120 Ta=25C f=1MHz 90 60 30 0 0 5 10 15 20 25 30 Reverse Voltage, VR (V) Company reserves the right to improve product design , functions and reliability without notice. REV:A SP-JB029 Page 2 Comchip Technology CO., LTD. Capacitance Between Terminals, CT (pF) Forward Current, IF (A) Reverse Current, IR (A)