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Product Detailed Parameters
- Description：DIODE SCHOTTKY 40V 1A SOD123F
- Series：-
- Mfr：Comchip Technology
- Package：Tape & Reel (TR)
- Technology：Schottky
- Voltage - DC Reverse (Vr) (Max)：40 V
- Current - Average Rectified (Io)：1A
- Voltage - Forward (Vf) (Max) @ If：450 mV @ 1 A
- Speed：Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr)：-
- Current - Reverse Leakage @ Vr：200 µA @ 30 V
- Capacitance @ Vr, F：200pF @ 4V, 1MHz
- Mounting Type：Surface Mount
- Package / Case：SOD-123F
- Supplier Device Package：SOD-123F
- Operating Temperature - Junction：-50°C ~ 125°C
- Grade：-
- Qualification：-
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Overview
The CDBM140LR-HF is a single Schottky barrier rectifier manufactured by Comchip Technology. It features an average forward current of 1 A and a maximum repetitive peak reverse voltage of 40 V. The device utilizes a SOD-123F molded plastic case for surface mount installation. Key electrical specifications include a forward voltage drop of 550 mV at 1 A and a reverse leakage current of 500 µA at 40 V. It supports a forward surge current of 9 A and operates within a junction temperature range of -55°C to +150°C.
Feature Summary
- Ultra-high-speed switching capability for efficient power conversion
- Low forward voltage drop to minimize power loss and heat generation
- Guardring structure provides robust overvoltage protection
- Silicon epitaxial planar chip construction ensures reliability
Applications
- High-frequency DC-DC converters
- Power supply freewheeling diodes
- Polarity protection circuits
- Clamping diodes in low-voltage applications
Procurement Notes
Verify the specific suffix 'LR' against the manufacturer's official datasheet to confirm package type and marking variations. Ensure compliance with RoHS3 standards if required by your assembly process. Cross-reference the DigiKey part number 641-1732-1-ND or Mouser number 750-CDBM140LR-HF for accurate sourcing channels. Confirm lead times directly with authorized distributors as availability fluctuates.
Selection Notes
Select this component when a compact surface-mount Schottky rectifier is needed for low-voltage, high-efficiency applications. The 1 A rating suits moderate current loads where space constraints favor the SOD-123F package. Consider the 40 V reverse voltage limit for input protection or output rectification tasks. Evaluate thermal management requirements based on the specified junction temperature range.
Part Context
This part belongs to Comchip Technology's Schottky Diodes & Rectifiers category. It is designed as a low-profile alternative to standard through-hole rectifiers, offering improved thermal performance and reduced footprint. The series emphasizes low forward voltage and fast switching speeds, targeting modern portable electronics and communication equipment.
Replacement Considerations
Direct substitutes may include other 1 A, 40 V Schottky diodes in SOD-123 packages from manufacturers like Vishay or ON Semiconductor. Verify pinout compatibility and thermal resistance values before substitution. Ensure the replacement meets the same reverse leakage and forward voltage specifications for circuit equivalence.
