CDBU70 Schottky Diode Equivalent & Substitute Parts

Part Overview

The CDBU70 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 70V reverse voltage with 70mA average rectified current, serving as a small-signal rectifier in power conversion and signal protection circuits. Equivalent and substitute parts are identified based on matching electrical characteristics, mechanical compatibility, and regulatory compliance to ensure direct functional interchangeability in circuit designs.

Substiute Parts

CDBU70

Comchip TechnologyIn Stock: 1014CDBU70 Datasheet

Current PartRFQ

CDBU70-HF

Comchip TechnologyIn Stock: 1105CDBU70-HF Datasheet

Parametric EquivalentRFQ

CDBUR70

Comchip TechnologyIn Stock: 11887CDBUR70 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CDBU70 are classified as parametric equivalents based on identical electrical and mechanical specifications. Substitution is valid when all of the following criteria are met:

• Voltage - DC Reverse (Vr) (Max): 70 V
• Current - Average Rectified (Io): 70 mA
• Voltage - Forward (Vf) (Max) @ If: 1 V @ 15 mA
• Reverse Recovery Time (trr): 5 ns
• Current - Reverse Leakage @ Vr: 100 nA @ 50 V
• Capacitance @ Vr, F: 2 pF @ 0V, 1MHz
• Package / Case: 2-SMD, No Lead
• Supplier Device Package: 0603/SOD-523F
• Operating Temperature - Junction (Max): 125°C
• Technology: Schottky
• Mounting Type: Surface Mount

All substitute parts listed below meet these criteria and are manufactured by Comchip Technology with Active product status.

Parameter Comparison

Engineering Selection Recommendations

All three parts—CDBU70, CDBU70-HF, and CDBUR70—are functionally equivalent for direct substitution in circuit applications requiring a 70V/70mA Schottky rectifier diode in 0603/SOD-523F surface mount package. Selection among these parts may be based on availability and inventory levels:

• CDBU70: 998 Pcs in stock
• CDBU70-HF: 1003 Pcs in stock
• CDBUR70: 11814 Pcs in stock

All parts maintain Active product status and comply with ROHS3, REACH Unaffected, and MSL 1 (Unlimited) requirements, ensuring compatibility with modern manufacturing and environmental standards. No technical differentiation exists between these parts based on provided specifications.

Frequently Asked Questions (FAQ)

Q: Can CDBU70-HF be used as a direct replacement for CDBU70?

A: Yes. CDBU70-HF is a parametric equivalent with identical electrical characteristics, reverse voltage rating (70V), average rectified current (70mA), forward voltage drop (1V @ 15mA), reverse recovery time (5ns), and package specification (0603/SOD-523F). Direct substitution is valid.

Q: What is the difference between CDBU70 and CDBUR70?

A: No electrical or mechanical differences exist between these parts. Both are 70V/70mA Schottky rectifier diodes in 0603/SOD-523F surface mount packages with identical performance parameters. The part number suffix variation does not indicate functional differentiation.

Q: Are all three parts compatible with the same PCB layout?

A: Yes. All three parts use identical 2-SMD, No Lead package configuration in 0603/SOD-523F form factor. PCB footprints, solder pad dimensions, and mounting requirements are identical across CDBU70, CDBU70-HF, and CDBUR70.

Q: Do these parts require different handling or storage procedures?

A: No. All three parts share identical Moisture Sensitivity Level (MSL) rating of 1 (Unlimited), indicating no moisture sensitivity restrictions. Storage and handling procedures are equivalent.

Q: Which part should be selected for new designs?

A: Selection is based on availability and supply chain considerations. All three parts are Active products with full compliance certifications. CDBUR70 offers the highest inventory level (11814 Pcs), while CDBU70 and CDBU70-HF maintain comparable stock levels above 1000 Pcs.