CDBH3-54S-HF Equivalent & Substitute Parts

Part Overview

The CDBH3-54S-HF is a Schottky diode array manufactured by Comchip Technology, configured as 1 pair series connection rated for 30 V DC reverse voltage and 200 mA average rectified current per diode. The device is packaged in SOT-523 surface mount configuration and is ROHS3 compliant with MSL 1 rating.

The CDBH3-54S-HF carries an obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this diode array configuration.

Substiute Parts

CDBH3-54S-HF

Comchip TechnologyIn Stock: 867CDBH3-54S-HF Datasheet

Current PartRFQ

BAT54ST-HF

Comchip TechnologyIn Stock: 1201BAT54ST-HF Datasheet

SimilarRFQ

BAT54ST-7-F

Diodes IncorporatedIn Stock: 155402BAT54ST-7-F Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDBH3-54S-HF is determined by strict equivalence across the following electrical and mechanical parameters:

Critical Matching Parameters:

• Diode configuration: 1 pair series connection
• Technology: Schottky
• Voltage rating: 30 V DC reverse maximum
• Current rating: 200 mA average rectified per diode
• Forward voltage: 1 V maximum at 100 mA
• Reverse recovery time: 5 ns
• Reverse leakage current: 2 µA at 25 V
• Package: SOT-523 surface mount
• Moisture sensitivity: MSL 1

Substitute parts BAT54ST-HF and BAT54ST-7-F meet all specified electrical parameters and mechanical requirements. Both devices maintain identical functional characteristics within the defined operating envelope.

Parameter Comparison

Engineering Selection Recommendations

BAT54ST-HF (Comchip Technology): This substitute part is manufactured by the same supplier as the original CDBH3-54S-HF and carries active product status. All electrical parameters and mechanical specifications are identical to the main part. The BAT54ST-HF provides direct functional equivalence with expanded operating temperature range (-55°C to 125°C versus 125°C maximum for the original). ROHS3 compliance and MSL 1 rating are maintained. This part is suitable for direct replacement in applications where the original CDBH3-54S-HF is specified.

BAT54ST-7-F (Diodes Incorporated): This parametric equivalent from Diodes Incorporated meets all electrical and mechanical requirements of the CDBH3-54S-HF. The device maintains identical voltage, current, and switching characteristics within the specified operating envelope. Product status is active with extended operating temperature range (-65°C to 125°C). ROHS3 compliance and MSL 1 rating are confirmed. This part is suitable for applications requiring the specified electrical performance and SOT-523 package configuration.

Both substitute parts are ROHS3 compliant and carry MSL 1 moisture sensitivity rating, matching the compliance profile of the original part.

Frequently Asked Questions (FAQ)

Q: Can BAT54ST-HF be used as a direct replacement for CDBH3-54S-HF?

A: Yes. The BAT54ST-HF meets all specified electrical parameters: 30 V reverse voltage rating, 200 mA average rectified current per diode, 1 V forward voltage at 100 mA, 5 ns reverse recovery time, and 2 µA reverse leakage current at 25 V. Both devices use SOT-523 surface mount packaging. The BAT54ST-HF is manufactured by Comchip Technology and carries active product status.

Q: What is the difference between BAT54ST-HF and BAT54ST-7-F?

A: Both parts are parametric equivalents with identical electrical specifications and SOT-523 packaging. The primary differences are manufacturer (Comchip Technology versus Diodes Incorporated) and operating temperature range. BAT54ST-HF operates from -55°C to 125°C junction temperature, while BAT54ST-7-F operates from -65°C to 125°C. Both parts are ROHS3 compliant with MSL 1 rating.

Q: Are there packaging differences between these substitute parts?

A: All three parts use SOT-523 surface mount package configuration. BAT54ST-7-F is available in Cut Tape (CT) and Digi-Reel packaging options. No mechanical or footprint differences exist between the parts.

Q: Do the substitute parts maintain the same electrical performance?

A: Yes. All substitute parts maintain identical electrical specifications: 30 V DC reverse voltage maximum, 200 mA average rectified current per diode, 1 V forward voltage at 100 mA, 5 ns reverse recovery time, and 2 µA reverse leakage current at 25 V. The diode configuration remains 1 pair series connection with Schottky technology.

Q: What is the compliance status of the substitute parts?

A: Both BAT54ST-HF and BAT54ST-7-F are ROHS3 compliant with MSL 1 (unlimited) moisture sensitivity level, matching the compliance profile of the original CDBH3-54S-HF. BAT54ST-7-F carries additional REACH Unaffected status.

Q: Why is the CDBH3-54S-HF marked as obsolete?

A: The CDBH3-54S-HF carries obsolete product status. Substitute parts with active status (BAT54ST-HF and BAT54ST-7-F) are available to support ongoing design requirements and production continuity.