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B0540W-7
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Product Detailed Parameters
- Description：DIODE SCHOTTKY 40V 500MA SOD123
- Series：-
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR),Cut Tape (CT)
- Technology：Schottky
- Voltage - DC Reverse (Vr) (Max)：40 V
- Current - Average Rectified (Io)：500mA
- Voltage - Forward (Vf) (Max) @ If：510 mV @ 500 mA
- Speed：Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr)：-
- Current - Reverse Leakage @ Vr：20 µA @ 40 V
- Capacitance @ Vr, F：170pF @ 0V, 1MHz
- Mounting Type：Surface Mount
- Package / Case：SOD-123
- Supplier Device Package：SOD-123
- Operating Temperature - Junction：-65°C ~ 150°C
- Grade：-
- Qualification：-
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Overview
The B0540W-7 is a surface-mount Schottky barrier rectifier manufactured by Diodes Incorporated. It features an average forward current of 0.5 A and a peak repetitive reverse voltage of 40 V. The device utilizes SOD123 packaging with guard ring construction for transient protection. Electrical characteristics include a maximum forward voltage drop of 0.62 V at 1.0 A and 25°C, and a maximum leakage current of 20 µA at 40 V and 25°C. It operates within a temperature range of -65°C to +150°C.
Feature Summary
- Low forward voltage drop for high conductance
- Guard ring construction for transient protection
- Totally lead-free and fully RoHS compliant
- Halogen and antimony free green device
Applications
- High frequency rectification in power supplies
- Free-wheeling diodes in DC-DC converters
- Polarity protection circuits
- Clamping diodes in low voltage applications
Procurement Notes
Verify the specific ordering suffix when purchasing. The datasheet lists B0540W-7-F as the standard tape and reel configuration containing 3,000 units per carrier. Confirm that the received component matches the required marking code and date code format specified in the manufacturer's documentation to ensure authenticity and traceability.
Selection Notes
Select this component for applications requiring efficient rectification at moderate currents up to 0.5 A. Ensure the circuit design accounts for the thermal resistance values provided for FR-4 and polyimide PCBs. Verify that the operating voltage does not exceed the 40 V rating and consider derating the forward current if ambient temperatures approach the maximum limit.
Part Context
This part belongs to the B0540W series of surface-mount Schottky barrier rectifiers from Diodes Incorporated. It is designed for general-purpose rectification where low forward voltage and high efficiency are critical. The product line includes variants with different voltage ratings and packaging options to suit various electronic system requirements.
Replacement Considerations
Check for equivalent parts such as B0530W or B0520LW from the same manufacturer if lower voltage ratings are acceptable. Ensure any substitute maintains the SOD123 package dimensions and meets the required electrical specifications for forward current and reverse voltage.
FAQ
What is the typical thermal resistance of the B0540W-7?
The typical thermal resistance junction-to-ambient air is 385 °C/W on an FR-4 PCB and 325 °C/W on a polyimide PCB.
Is the B0540W-7 qualified for automotive applications?
The standard B0540W-7 is qualified to JEDEC standards for high reliability. An automotive-compliant version is available under the separate part number B0540WQ.
