Low VF SMD Schottky Barrier Rectifiers CDBM220L-HF Thru. CDBM240L-HF Reverse Voltage: 20 to 40 Volts Forward Current: 2.0 Amp RoHS Device Halogen free Mini SMA/SOD-123 Features 0.154(3.9) 0.138(3.5) 0.012(0.3) Typ. -Ideal for surface mount applications. -Easy pick and place. -Plastic package has Underwriters Lab. 0.071(1.9) 0.055(1.5) flammability classification 94V-0. -Exceeds environmental standard MIL-S- 19500/228. -Low leakage current. Mechanical data 0.067(1.7) -Case: Mini SMA/SOD-123, molded plastic. 0.051(1.3) -Terminals: solderable per MIL-STD-750, 0.028(0.7) Typ. 0.028(0.7) Typ. method 2026. -Polarity: Color band denotes cathode end. Dimensions in inches and (millimeter) -Approx. weight: 0.018 grams Maximum Ratings and Electrical Characteristics Parameter Symbol CDBM220L-HF CDBM230L-HF CDBM240L-HF Units Repetitive peak reverse voltage VRRM 20 30 40 V Continuous reverse voltage VR 20 30 40 V Max. RMS voltage VRMS 14 21 28 V Peak surge forward current, 8.3ms single half sine-wave superimposed IFSM 50 A on rate load (JEDEC method) Forward rectified current IO 2.0 A Max. forward voltage at IF=2.0A VF 0.38 0.40 0.38 V O VR= VRRM TA= 25 C 1.0 Reverse current IR mA O 10 VR= VRRM TA=125 C Max. thermal resistance, junction to O R JA 70 C/W ambient 160 pF Diode junction capacitance CJ O Storage temperature -65 to +175 C TSTG O Operating temperature TJ -55 to +125 C REV:A QW-JL002 Page 1 Comchip Technology CO., LTD.Low VF SMD Schottky Barrier Rectifiers RATING AND CHARACTERISTIC CURVES (CDBM220L-HF thru CDBM240L-HF) Fig.2 - Typical Forward Current Fig.1 - Typical Forward Characteristics Derating Curve 100 2.8 2.4 10 2.0 1.6 1 1.2 0.8 0.1 O TJ=25 C, Pulse 0.4 Width=300 s 1% Duty Cycle 0.01 0 0.1 0.3 0.5 0.7 0.9 1.1 1.3 1.5 0 25 50 75 100 125 150 175 Forward Voltage, (V) Ambient Temperature, (C) Fig.4 - Max. Non-repetitive Forward Fig.3 - Typical Reverse Characteristics Surge Current 60 100 O TJ=25 C 8.3ms single half sine wave, JEDEC method 50 10 40 30 1 O TJ=75 C 20 0.1 10 O TJ=25 C 0.01 0 1 10 100 0 20 40 60 80 100 120 140 Number of Cycles at 60Hz Percent of Rated Peak Reverse Voltage, (%) Fig.5 - Typical Junction Capacitance 350 300 250 200 150 100 50 0 0.01 0.1 1 10 100 Reverse Voltage, (V) REV:A QW-JL002 Page 2 Comchip Technology CO., LTD. CDBM220L-HF B 240L- CD M HF Reverse Leakage Current, (mA) Junction Capacitance, (pF) Instantaneous Forward Current, (A) Peak Forward Surge Current, (A) Average Forward Current, (A)