CDBHM240-HF Equivalent & Substitute Parts

Part Overview

The CDBHM240-HF is a single-phase bridge rectifier diode manufactured by Comchip Technology, utilizing Schottky technology for surface mount applications. This component is rated for 40 V peak reverse voltage with 2 A average rectified current capacity. The part is classified as obsolete, necessitating identification of active equivalent components for new designs and ongoing production requirements. The CDBHM240-HF is packaged in TO-269AA, 4-BESOP surface mount configuration and is no longer in active production status.

Substiute Parts

CDBHM240-HF

Comchip TechnologyIn Stock: 803CDBHM240-HF Datasheet

Current PartRFQ

CDBHM240L-HF

Comchip TechnologyIn Stock: 58910CDBHM240L-HF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete CDBHM240-HF is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Diode Type: Single Phase
• Technology: Schottky
• Voltage - Peak Reverse (Max): 40 V
• Current - Average Rectified (Io): 2 A
• Voltage - Forward (Vf) (Max) @ If: 550 mV @ 2 A
• Mounting Type: Surface Mount
• Package / Case: TO-269AA, 4-BESOP

The CDBHM240L-HF meets all mandatory electrical and mechanical parameters required for direct substitution. This part maintains identical voltage and current ratings, forward voltage characteristics, and physical packaging specifications. The substitute part is manufactured by the same supplier (Comchip Technology) and carries active product status with current production availability.

Parameter Comparison

Engineering Selection Recommendations

The CDBHM240L-HF is the direct active equivalent for the obsolete CDBHM240-HF. Selection of this substitute is based on the following engineering factors:

Product Status: The CDBHM240-HF is obsolete and no longer manufactured. The CDBHM240L-HF carries active product status with established production and supply chain availability (58,816 pieces in stock).

Electrical Equivalence: Both parts maintain identical voltage ratings (40 V peak reverse), current ratings (2 A average rectified), and forward voltage characteristics (550 mV @ 2 A). These parameters are the primary determinants of functional compatibility in bridge rectifier applications.

Compliance and Certifications: The CDBHM240L-HF is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component procurement. The original part's compliance status is not specified.

Operating Temperature Consideration: The substitute operates across -55°C to 125°C, compared to the original -55°C to 150°C range. Applications requiring operation above 125°C require evaluation against specific thermal requirements.

Reverse Leakage Difference: The substitute exhibits 1 mA reverse leakage at 40 V, compared to 100 µA for the original part. This tenfold increase in leakage current is within acceptable parameters for standard bridge rectifier applications but should be evaluated for low-leakage or precision analog circuit requirements.

Frequently Asked Questions (FAQ)

Q: Can the CDBHM240L-HF be used as a direct replacement for the CDBHM240-HF?

A: Yes. The CDBHM240L-HF is electrically and mechanically equivalent across all critical parameters: 40 V peak reverse voltage, 2 A average rectified current, 550 mV forward voltage at 2 A, and identical TO-269AA, 4-BESOP surface mount packaging. Both are single-phase Schottky bridge rectifiers from Comchip Technology.

Q: What are the differences between these two parts?

A: The primary differences are product status and secondary electrical characteristics. The CDBHM240-HF is obsolete; the CDBHM240L-HF is active. The substitute has a narrower operating temperature range (-55°C to 125°C versus -55°C to 150°C) and higher reverse leakage current (1 mA versus 100 µA at 40 V). The substitute includes ROHS3 compliance certification.

Q: Are there any PCB layout or design changes required when switching from CDBHM240-HF to CDBHM240L-HF?

A: No. Both parts use identical TO-269AA, 4-BESOP surface mount packaging. PCB footprints, solder pad layouts, and component placement remain unchanged.

Q: What is the significance of the higher reverse leakage current in the CDBHM240L-HF?

A: The 1 mA reverse leakage at 40 V in the substitute is acceptable for standard bridge rectifier applications including power supply rectification and general AC-to-DC conversion. Applications requiring ultra-low leakage characteristics or precision analog signal processing should evaluate this parameter against specific circuit requirements.

Q: Is the CDBHM240L-HF available in the same packaging format?

A: Yes. The CDBHM240L-HF is supplied in Tape & Reel (TR) packaging, which is the standard production format for surface mount components. This packaging is compatible with automated assembly equipment.

Q: What is the base product number relationship between these parts?

A: Both parts share the base product number CDBHM240. The CDBHM240L-HF represents the current production variant (indicated by the "L" designation) of the original CDBHM240-HF design.