Comchip SMD Schottky Barrier Rectifiers SMD Diode Specialist CDBAS540-HF Reverse Voltage: 40 Volts Forward Current: 5.0 Amp RoHS Device Halogen Free SMA-S Features 0.193(4.90) 0.173(4.40) - High surge and current capability. 0.045(1.15) Typ. - For use in low voltage, high frequency invertors free wheeling and polarity protection. 0.057(1.45) 0.051(1.30) - Built-in strain relief. 0.110(2.80) 0.096(2.45) - Silicon epitaxial planar chips. - Metal silicon junction with guard ring. 0.154(3.90) 0.132(3.35) Mechanical data 0.048(1.20) 0.031(0.80) - Epoxy: UL94V-0 rate flame retardant. 0.043(1.10) Typ. - Case: Molded plastic, SMA-S. - Terminals: Solderable per MIL-STD-750 method 2026. - Polarity: Color band denotes cathode end. Dimensions in inches and (millimeter) Circuit diagram - Mounting position: Any - Weight: 0.045 grams(approx.). Maximum Ratings and Electrical Characteristics (at T =25°C unless otherwise noted) A Symbol CDBAS540-HF Unit Maximum recurrent peak reverse voltage VRRM 40 V Maximum DC blocking voltage VDC 40 V Maximum RMS voltage VRMS 28 V IAV 5.0 A IFSM 100 A VF 0.55 V Parameter Maximum average forward rectified current 0.2 x0.2”(5.0x5.0mm) copper pad area, see Fig.1 Peak forward surge current 8.3ms single half sine-wave superimposed on rated load (JEDEC method) Maximum forward voltage at 3.0A (note 1) Maximum DC reverse current at rated DC blocking voltage 0.5 TJ=25°C IR Typical junction capacitance (note 2) mA 20 TJ=100°C CJ 300 PF RθJA 50.0 °C/W RθJL 15.0 °C/W Junction temperature range TJ -55 to +125 °C Storage temperature range TSTG -55 to +150 °C Typical thermal resistance (note 3) Notes: 1. Pulse test: 300µS pulse width, 1% duty cycle. 2. Measured at 1.0MHz and applied reverse voltage of 4.0 volts 3. Thermal resistance from junction to ambient and from junction to lead P.C.B. mounted on 0.2x0.2”(5.0x5.0mm) copper pad areas. Company reserves the right to improve product design , functions and reliability without notice. REV: A Page 1 QW-JB069 Comchip Technology CO., LTD. Comchip SMD Schottky Barrier Rectifiers SMD Diode Specialist TYPICAL RATING AND CHARACTERISTIC CURVES (CDBAS540-HF) Fig. 2 - Maximum Non-Repetitive Peak Forward Surge Current Fig. 1 - Forward Current Derating Curve 100 Peak Forward Surge Current, (A) 6.0 Average Forward Current, (A) 5.0 4.0 3.0 2.0 single phase half wave 60HZ resistive or inductive load P.C.B. mounted on 0.2x0.2” (5.0x5.0mm) copper pad areas 1.0 0 TJ = 25°C 8.3ms single half sine-wave (JEDEC Method) 1 0 25 75 50 100 125 150 1 10 100 Lead Temperature, (°C) Number Of Cycles At 60Hz Fig. 3 - Typical Instantaneous Forward Characteristics Fig. 4 - Typical Reverse Characteristics 10,000 10,000 TJ=125°C TJ=125°C 1000 TJ=100°C 1000 Reverse Current, (μA) Instantaneous Forward Current, (mA) 10 TJ=100°C 100 10 TJ=75°C TJ=50°C 1.0 TJ=75°C 100 TJ=50°C TJ=25°C 10 1.0 TJ=25°C 0.1 0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0 Instantaneous Forward Voltage, (V) 5 10 15 20 25 30 35 40 Reverse Voltage, (V) Fig. 5 - Typical Junction Capacitance 1000 900 Capacitance, (pF) 800 700 600 500 400 300 200 100 0 0 10 20 30 40 Reverse Voltage, (V) Company reserves the right to improve product design , functions and reliability without notice. REV: A Page 2 QW-JB069 Comchip Technology CO., LTD. Comchip SMD Schottky Barrier Rectifiers SMD Diode Specialist Reel Taping Specification d P0 P1 T E Index hole F W B P C A 12 o 0 D2 D1 D W1 Trailer Device ....... ....... End ....... ....... Leader ....... ....... ....... ....... 160mm (min) Start 400mm (min) Direction of Feed SMA-S SMA-S SYMBOL A B C d D D1 D2 (mm) 2.85 ± 0.10 5.10 ± 0.10 1.25 ± 0.05 1.55 ± 0.05 178.00 ± 2.00 75.00 ± 2.00 13.00 ± 0.50 (inch) 0.112 ± 0.004 0.201 ± 0.004 0.049 ± 0.002 0.061 ± 0.002 7.008 ± 0.079 2.953 ± 0.079 0.512 ± 0.020 SYMBOL E F P P0 P1 T W W1 (mm) 1.75 ± 0.10 5.50 ± 0.05 4.00 ± 0.10 4.00 ± 0.10 2.00 ± 0.05 0.25 ± 0.05 12.00 ± 0.10 16.80 ± 4.00 (inch) 0.069 ± 0.004 0.217 ± 0.002 0.157 ± 0.004 0.157 ± 0.004 0.079 ± 0.002 0.010 ± 0.002 0.472 ± 0.004 0.661 ± 0.157 Company reserves the right to improve product design , functions and reliability without notice. REV: A Page 3 QW-JB069 Comchip Technology CO., LTD. Comchip SMD Schottky Barrier Rectifiers SMD Diode Specialist Marking Code Part Number Marking Code CDBAS540-HF 54S 54S = Cathod band xxx = Product type marking code Suggested PAD Layout DO-214AC/SMA-S D SIZE (mm) (inch) A 1.90 0.075 B 1.60 0.063 C 2.70 0.106 D 5.90 0.232 C A B Standard Packaging REEL PACK Case Type DO-214AC (SMA-S) REEL Reel Size ( pcs ) (inch) 3,000 7 Company reserves the right to improve product design , functions and reliability without notice. REV: A Page 4 QW-JB069 Comchip Technology CO., LTD.