CDBUR42 Equivalent & Substitute Parts

Part Overview

The CDBUR42 is a Schottky rectifier diode manufactured by Comchip Technology, designed for surface mount applications in the 0603/SOD-523F package. This component operates at 30 V DC reverse voltage with 200 mA average rectified current, suitable for low-voltage power conversion and signal protection circuits. The part is currently Active in product status with 920 pieces in stock. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity when the primary part number becomes unavailable or when design requirements permit alternative qualified components.

Substiute Parts

CDBUR42

Comchip TechnologyIn Stock: 1004CDBUR42 Datasheet

Current PartRFQ

CDBUR54

Comchip TechnologyIn Stock: 1038CDBUR54 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CDBUR42 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Voltage - DC Reverse (Vr) (Max): 30 V
• Current - Average Rectified (Io): 200 mA
• Package / Case: 2-SMD, No Lead
• Supplier Device Package: 0603/SOD-523F
• Technology: Schottky
• Reverse Recovery Time (trr): 5 ns
• Operating Temperature - Junction (Max): 125°C
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

The CDBUR54 qualifies as a parametric equivalent substitute. Both parts share identical voltage ratings, current ratings, package specifications, and thermal characteristics. Differences in forward voltage specification (1 V @ 100 mA for CDBUR54 versus 1 V @ 200 mA for CDBUR42) and reverse leakage current (2 µA @ 25 V for CDBUR54 versus 500 nA @ 25 V for CDBUR42) do not disqualify substitution, as these variations remain within acceptable engineering tolerances for Schottky diode applications and do not affect the core functional parameters that determine circuit compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both CDBUR42 and CDBUR54 are Active products manufactured by Comchip Technology and maintain full compliance with ROHS3 and REACH regulations. Selection between these parts should be based on availability and inventory status. The CDBUR42 currently maintains 920 pieces in stock, while the CDBUR54 maintains 1000 pieces. Both components are packaged in Tape & Reel format and carry MSL Level 1 (Unlimited) moisture sensitivity classification, indicating no special storage or handling requirements beyond standard component practices.

For applications requiring the lowest reverse leakage current specification, the CDBUR42 (500 nA @ 25 V) is the preferred selection. For applications where forward voltage characteristics at lower current levels are critical, the CDBUR54 specification should be evaluated against circuit requirements. Both parts are suitable for direct substitution in 30 V, 200 mA Schottky rectifier applications utilizing 0603/SOD-523F surface mount packages.

Frequently Asked Questions (FAQ)

Q: Can CDBUR54 be used as a direct replacement for CDBUR42 in existing designs?

A: Yes. Both parts share identical voltage ratings (30 V), current ratings (200 mA), package specifications (0603/SOD-523F), and thermal characteristics (125°C junction temperature). The parts are electrically compatible for substitution in Schottky rectifier applications.

Q: What are the differences between CDBUR42 and CDBUR54?

A: The primary differences are reverse leakage current (CDBUR42: 500 nA @ 25 V; CDBUR54: 2 µA @ 25 V) and forward voltage test conditions (CDBUR42: 1 V @ 200 mA; CDBUR54: 1 V @ 100 mA). Both parameters remain within acceptable tolerances for Schottky diode applications and do not affect core circuit functionality.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both CDBUR42 and CDBUR54 are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements for electronic component manufacturing and distribution.

Q: What is the moisture sensitivity level for these parts?

A: Both parts carry MSL Level 1 (Unlimited), indicating no moisture sensitivity restrictions. Standard component storage and handling practices are sufficient.

Q: Can these parts be used interchangeably in high-frequency switching applications?

A: Both parts feature identical reverse recovery time (5 ns) and are classified as Small Signal devices with Any Speed capability. They are suitable for equivalent performance in high-frequency switching applications within the 200 mA current rating.

Q: What packaging format is used for these parts?

A: Both CDBUR42 and CDBUR54 are supplied in Tape & Reel (TR) format in the 0603/SOD-523F surface mount package, suitable for automated assembly processes.