CDBV3-54C-HF Equivalent & Substitute Parts

Part Overview

The CDBV3-54C-HF is a Schottky diode array manufactured by Comchip Technology, configured as 1 pair common cathode with 30V reverse voltage rating and 200mA average rectified current per diode. The device is packaged in SC-70, SOT-323 surface mount format and is currently in active production status with 1042 pieces in stock inventory.

Substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility is required while maintaining electrical and mechanical compatibility within the specified parameter envelope.

Substiute Parts

CDBV3-54C-HF

Comchip TechnologyIn Stock: 1061CDBV3-54C-HF Datasheet

Current PartRFQ

BAT54CWQ-7-F

Diodes IncorporatedIn Stock: 3328BAT54CWQ-7-F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CDBV3-54C-HF is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Diode Configuration: 1 Pair Common Cathode
• Technology: Schottky
• Voltage - DC Reverse (Vr) (Max): 30 V (minimum)
• Current - Average Rectified (Io) per Diode: 200 mA (minimum)
• Voltage - Forward (Vf) (Max) @ If: 1 V @ 100 mA (maximum)
• Package / Case: SC-70, SOT-323
• Mounting Type: Surface Mount

Compliance Parameters:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

The BAT54CWQ-7-F manufactured by Diodes Incorporated meets all mandatory matching parameters and compliance requirements. Reverse recovery time (5 ns vs. 4 ns) and operating temperature range extensions do not disqualify substitution, as the substitute meets or exceeds the minimum specified performance envelope.

Parameter Comparison

Engineering Selection Recommendations

Primary Part: CDBV3-54C-HF

• Active production status with established supply chain
• 1042 pieces in current inventory
• ROHS3 compliant, REACH unaffected
• Suitable for standard commercial applications

Substitute Part: BAT54CWQ-7-F

• Active production status with higher inventory availability (3300 pieces)
• ROHS3 compliant, REACH unaffected
• AEC-Q101 automotive qualification provides extended environmental validation
• Extended operating temperature range (-65°C to 125°C) accommodates broader thermal environments
• Reverse recovery time specification (5 ns) remains within acceptable performance envelope for small-signal switching applications

Both parts are suitable for direct substitution in surface mount Schottky diode array applications requiring 30V reverse voltage and 200mA current ratings in SOT-323 packaging. Selection between primary and substitute should be based on availability, lead time, and application-specific temperature requirements.

Frequently Asked Questions (FAQ)

Q: Can BAT54CWQ-7-F replace CDBV3-54C-HF in existing designs without PCB modification?

A: Yes. Both parts use identical SC-70, SOT-323 surface mount packaging with the same pin configuration and footprint. No PCB layout changes are required.

Q: What is the significance of the 1 ns difference in reverse recovery time (4 ns vs. 5 ns)?

A: Both specifications classify as small-signal switching diodes with recovery times well below 200 ns. The 1 ns difference is negligible for applications operating at frequencies below 100 MHz and does not affect functional compatibility.

Q: Does the automotive qualification (AEC-Q101) of BAT54CWQ-7-F restrict its use to automotive applications only?

A: No. AEC-Q101 qualification indicates additional environmental and reliability testing. Parts qualified to automotive standards are suitable for any application, including commercial and industrial use.

Q: Are there any compliance or regulatory differences between the two parts?

A: Both parts are ROHS3 compliant, REACH unaffected, and carry identical MSL ratings (1 - Unlimited). No compliance barriers exist for substitution.

Q: What is the common cathode configuration, and does it affect substitution?

A: Common cathode configuration means both diodes in the array share a single cathode connection. This is a functional characteristic that must match exactly between primary and substitute parts. Both CDBV3-54C-HF and BAT54CWQ-7-F are configured identically as 1 pair common cathode.

Q: Can either part be used in high-frequency switching applications above 100 MHz?

A: Both parts are rated for small-signal operation with current ratings of 200 mA or less. Frequency capability is not specified in the provided parameters. Application-specific frequency validation is required for circuits operating above specified switching speed ranges.