CDBU54-HF Schottky Diode Equivalent & Substitute Parts

Part Overview

The CDBU54-HF is an active 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, making it suitable for low-voltage power conversion and signal protection circuits. The part is ROHS3 compliant and carries unlimited moisture sensitivity level (MSL 1), indicating robust handling characteristics for standard manufacturing environments. Equivalent substitute parts are identified based on matching electrical specifications and mechanical compatibility to ensure direct functional replacement in circuit designs.

Substiute Parts

CDBU54-HF

Comchip TechnologyIn Stock: 772CDBU54-HF Datasheet

Current PartRFQ

CDBUR54

Comchip TechnologyIn Stock: 1038CDBUR54 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDBU54-HF is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part CDBUR54 qualifies as a parametric equivalent based on the following matching criteria:

Electrical Parameters (Must Match Exactly):

• Voltage - DC Reverse (Vr) (Max): 30 V
• Current - Average Rectified (Io): 200 mA
• Voltage - Forward (Vf) (Max) @ If: 1 V @ 100 mA
• Reverse Recovery Time (trr): 5 ns
• Current - Reverse Leakage @ Vr: 2 µA @ 25 V
• Capacitance @ Vr, F: 10 pF @ 1V, 1MHz
• Operating Temperature - Junction (Max): 125°C

Mechanical Parameters (Must Match Exactly):

• Package / Case: 2-SMD, No Lead
• Supplier Device Package: 0603/SOD-523F
• Mounting Type: Surface Mount

Compliance & Status (Must Match Exactly):

• Technology: Schottky
• Product Status: Active
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• REACH Status: REACH Unaffected

All parameters listed above are identical between CDBU54-HF and CDBUR54, establishing direct functional and physical interchangeability.

Parameter Comparison

Engineering Selection Recommendations

Both CDBU54-HF and CDBUR54 are active products from Comchip Technology with identical electrical and mechanical specifications. Selection between these parts is based on availability and supply chain considerations rather than technical differentiation.

CDBU54-HF is suitable for applications requiring immediate component availability, with 679 pieces in current stock.

CDBUR54 is suitable for applications where higher inventory levels are required, with 1000 pieces in current stock.

Both parts carry ROHS3 compliance and REACH unaffected status, meeting regulatory requirements for industrial and consumer applications. The unlimited moisture sensitivity level (MSL 1) indicates both parts are suitable for standard manufacturing processes without special handling requirements.

Frequently Asked Questions (FAQ)

Q: Can CDBUR54 be used as a direct replacement for CDBU54-HF?

A: Yes. CDBUR54 is a parametric equivalent with identical electrical specifications (30 V reverse voltage, 200 mA current rating, 1 V forward voltage at 100 mA, 5 ns reverse recovery time) and identical mechanical packaging (0603/SOD-523F surface mount). Direct substitution is supported without circuit modification.

Q: Are there any differences in compliance or regulatory status between CDBU54-HF and CDBUR54?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity level (MSL 1). Regulatory and environmental compliance is equivalent.

Q: What determines whether a part qualifies as a substitute for CDBU54-HF?

A: Substitution requires exact matching of all electrical parameters (reverse voltage, current rating, forward voltage, reverse recovery time, leakage current, capacitance, junction temperature), mechanical parameters (package type, footprint, mounting method), and compliance status (RoHS, REACH, MSL). Partial matches do not qualify as substitutes.

Q: Can CDBU54-HF be used in high-frequency switching applications?

A: The 5 ns reverse recovery time and small signal speed classification indicate suitability for switching applications within the 200 mA current limit. Specific application performance depends on circuit design and operating frequency.

Q: What is the significance of the 0603/SOD-523F package designation?

A: This designates a surface mount package with 0603 footprint dimensions and SOD-523F lead configuration. Both CDBU54-HF and CDBUR54 use this identical package, ensuring mechanical and electrical compatibility on the same PCB layout without modification.

Q: Are there inventory or lead time considerations when selecting between CDBU54-HF and CDBUR54?

A: CDBU54-HF has 679 pieces in stock, while CDBUR54 has 1000 pieces in stock. For applications requiring larger quantities or extended supply assurance, CDBUR54 may offer better availability. Both are active products with no known discontinuation status.