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Product Detailed Parameters
- Description：DIODE SCHOTTKY 30V 200MA 0402
- Series：-
- Mfr：Comchip Technology
- Package：Tape & Reel (TR),Cut Tape (CT)
- Technology：Schottky
- Voltage - DC Reverse (Vr) (Max)：30 V
- Current - Average Rectified (Io)：200mA
- Voltage - Forward (Vf) (Max) @ If：1 V @ 200 mA
- Speed：Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr)：5 ns
- Current - Reverse Leakage @ Vr：500 nA @ 25 V
- Capacitance @ Vr, F：10pF @ 1V, 1MHz
- Mounting Type：Surface Mount
- Package / Case：0402 (1006 Metric)
- Supplier Device Package：0402/SOD-923F
- Operating Temperature - Junction：125°C (Max)
- Grade：-
- Qualification：-
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Overview
The CDBQR43 is a single-phase Schottky barrier rectifier from Comchip Technology, designed for surface mount applications. It features a compact 0402 (SOD-923F) package with a maximum reverse voltage of 30V and an average forward current of 200mA. Key electrical parameters include a maximum reverse leakage current of 500nA, a forward surge current capability of 4A, and a maximum operating junction temperature of 125°C. The device utilizes silicon epitaxial planar chip technology to ensure low forward voltage drop and high efficiency.
Feature Summary
- Ultra-low profile surface mount package optimizes board space
- High efficiency with low forward voltage drop
- Robust high surge current capability
- Lead-free construction meeting environmental standards
Applications
- Low voltage DC-DC converters
- Power supply rectification in portable devices
- Reverse polarity protection circuits
- Clamping diodes in high-speed switching applications
Procurement Notes
Verify the specific ordering suffix, such as -HF, which indicates lead-free compliance. Confirm the package designation matches the required footprint, typically SOD-923F or 0402. Check manufacturer announcements for obsolescence status, as some listings indicate potential discontinuation. Ensure the component meets MIL-STD-19500/228 environmental requirements if specified for your design.
Selection Notes
Select this component when board space is limited due to its small 0402 form factor. Choose it for applications requiring fast switching speeds and low power loss at low voltages. Ensure the circuit operates within the 30V reverse voltage limit and 200mA forward current rating. Consider the thermal resistance characteristics for heat dissipation in dense layouts.
Part Context
This part belongs to the CDBQR series of single-diode Schottky rectifiers. It is distinct from the CDBMH series, which uses SOD-123 packages, and the CDBA/CDBV series, which offer higher currents or multi-element configurations. The CDBQR43 is specifically engineered for ultra-small signal and low-power rectification needs.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pinout compatibility and electrical ratings against alternative manufacturers' 0402 Schottky diodes before substitution.
