CDBH3-54C-G Equivalent & Substitute Parts

Part Overview

The CDBH3-54C-G is a Schottky diode array manufactured by Comchip Technology, configured as 1 pair common cathode in SOT-523 surface mount package. This component is rated for 30 V DC reverse voltage with 200 mA average rectified current per diode. The part is currently classified as obsolete, making identification of equivalent and substitute components essential for ongoing design support and production continuity.

Substiute Parts

CDBH3-54C-G

Comchip TechnologyIn Stock: 999CDBH3-54C-G Datasheet

Current PartRFQ

BAT54CT-HF

Comchip TechnologyIn Stock: 1213BAT54CT-HF Datasheet

Parametric EquivalentRFQ

BAT54CT-7-F

Diodes IncorporatedIn Stock: 68483BAT54CT-7-F Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

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

• Diode Configuration: Must be 1 pair common cathode
• Technology: Must be Schottky
• Voltage - DC Reverse (Vr) (Max): Must be 30 V
• Current - Average Rectified (Io) (per Diode): Must be 200 mA (DC)
• Voltage - Forward (Vf) (Max) @ If: Must be 1 V @ 100 mA
• Reverse Recovery Time (trr): Must be 5 ns
• Current - Reverse Leakage @ Vr: Must be 2 µA @ 25 V
• Package / Case: Must be SOT-523
• Mounting Type: Must be Surface Mount
• RoHS Status: Must be ROHS3 Compliant
• Moisture Sensitivity Level (MSL): Must be 1 (Unlimited)

All identified substitute parts meet these criteria without exception.

Parameter Comparison

Engineering Selection Recommendations

BAT54CT-HF (Comchip Technology) is an active product with identical electrical specifications to the CDBH3-54C-G. This part maintains the same manufacturer lineage and provides extended operating temperature range (-55°C ~ 125°C). ROHS3 compliance and MSL 1 rating are maintained. This substitute is suitable for direct replacement in applications where the original part is no longer available.

BAT54CT-7-F (Diodes Incorporated) is an active product with identical electrical specifications and extended operating temperature range (-65°C ~ 125°C). This part is supplied in Cut Tape (CT) and Digi-Reel® packaging with significantly higher inventory availability (68,400 pcs). ROHS3 compliance and MSL 1 rating are maintained. This substitute provides broader temperature performance and supply chain continuity.

Both substitute parts are REACH Unaffected and classified under ECCN EAR99 with HTSUS code 8541.10.0070, matching the compliance profile of the original component.

Frequently Asked Questions (FAQ)

Q: Can BAT54CT-HF and BAT54CT-7-F be used interchangeably with CDBH3-54C-G?

A: Yes. Both parts meet all electrical and mechanical parameters specified for the CDBH3-54C-G, including diode configuration, voltage ratings, current ratings, forward voltage characteristics, reverse recovery time, leakage current, package type, and compliance certifications.

Q: What is the difference between BAT54CT-HF and BAT54CT-7-F?

A: The primary differences are manufacturer (Comchip Technology vs. Diodes Incorporated), operating temperature range (BAT54CT-HF: -55°C ~ 125°C; BAT54CT-7-F: -65°C ~ 125°C), and packaging format (BAT54CT-7-F supplied in Cut Tape and Digi-Reel). All electrical specifications are identical.

Q: Why is the CDBH3-54C-G classified as obsolete?

A: Product status reflects manufacturer discontinuation. Active equivalents BAT54CT-HF and BAT54CT-7-F provide continued design support with identical performance characteristics.

Q: Are there any temperature performance differences I should consider?

A: The CDBH3-54C-G specifies maximum junction temperature of 125°C. Both substitutes extend the lower operating limit: BAT54CT-HF to -55°C and BAT54CT-7-F to -65°C. Applications operating at the upper temperature limit (125°C) are unaffected by this difference.

Q: Do the substitute parts maintain the same SOT-523 package footprint?

A: Yes. Both BAT54CT-HF and BAT54CT-7-F use SOT-523 surface mount package, ensuring mechanical and electrical compatibility with existing PCB designs.

Q: Are RoHS and REACH compliance maintained with these substitutes?

A: Yes. Both substitute parts are ROHS3 compliant and REACH Unaffected, matching the compliance status of the original CDBH3-54C-G.