CDBU70-HF Schottky Diode Equivalent & Substitute Parts

Part Overview

The CDBU70-HF is a 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 and is classified as a small signal diode with fast switching characteristics. The part is Active in product status and fully compliant with RoHS3 and REACH regulations. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical packaging, and performance characteristics within the Schottky diode category.

Substiute Parts

CDBU70-HF

Comchip TechnologyIn Stock: 1105CDBU70-HF Datasheet

Current PartRFQ

CDBU70

Comchip TechnologyIn Stock: 1014CDBU70 Datasheet

Parametric EquivalentRFQ

CDBUR70

Comchip TechnologyIn Stock: 11887CDBUR70 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CDBU70-HF are identified as parametric equivalents based on strict matching of the following critical parameters:

Electrical Specifications:

• 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

Mechanical & Package Specifications:

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

Compliance & Status:

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

All substitute parts listed below match these parameters exactly and are manufactured by Comchip Technology.

Parameter Comparison

Engineering Selection Recommendations

All three parts—CDBU70-HF, CDBU70, and CDBUR70—are direct parametric equivalents with identical electrical and mechanical specifications. Selection between these parts is based on the following factors:

Product Status & Compliance: All parts are Active in product status and fully compliant with RoHS3 and REACH regulations, meeting current environmental and regulatory requirements for electronic component manufacturing and use.

Availability & Supply: CDBUR70 offers the highest inventory level at 11,814 pieces, followed by CDBU70-HF at 1,003 pieces and CDBU70 at 998 pieces. For applications requiring immediate availability or bulk quantities, CDBUR70 is the preferred selection.

Packaging & Handling: All parts are supplied in Tape & Reel (TR) packaging with Moisture Sensitivity Level 1 (Unlimited), indicating no special moisture control requirements during storage or handling.

Functional Interchangeability: The CDBU70-HF, CDBU70, and CDBUR70 are functionally interchangeable in all circuit applications requiring a 70V, 70mA Schottky rectifier diode in the 0603/SOD-523F package. No circuit modifications or design changes are required when substituting between these parts.

Frequently Asked Questions (FAQ)

Q: Can CDBU70 and CDBUR70 be used as direct replacements for CDBU70-HF?

A: Yes. CDBU70 and CDBUR70 are parametric equivalents with identical electrical specifications, forward voltage characteristics, reverse recovery time, leakage current, and capacitance. All three parts use the same 0603/SOD-523F package and are manufactured by Comchip Technology. They are functionally interchangeable in circuit applications.

Q: What are the key parameters that determine substitution compatibility?

A: Substitution compatibility is determined by matching: Voltage - DC Reverse (Vr) at 70V, Current - Average Rectified (Io) at 70mA, Voltage - Forward (Vf) at 1V @ 15mA, Reverse Recovery Time (trr) at 5ns, Current - Reverse Leakage at 100nA @ 50V, Capacitance at 2pF @ 0V/1MHz, and the 0603/SOD-523F surface mount package. All substitute parts match these specifications exactly.

Q: Are there any differences in packaging or handling between CDBU70-HF, CDBU70, and CDBUR70?

A: No. All three parts are supplied in identical Tape & Reel (TR) packaging with the same 0603/SOD-523F package designation. All parts have Moisture Sensitivity Level 1 (Unlimited), requiring no special moisture control during storage or handling.

Q: Which part should be selected for high-volume production?

A: CDBUR70 is recommended for high-volume production due to significantly higher inventory availability at 11,814 pieces compared to CDBU70-HF (1,003 pieces) and CDBU70 (998 pieces). This ensures consistent supply and reduces lead time risk.

Q: Do all substitute parts meet the same regulatory and compliance standards?

A: Yes. CDBU70-HF, CDBU70, and CDBUR70 are all ROHS3 Compliant and REACH Unaffected. All parts meet current environmental and regulatory requirements for electronic component use in regulated industries and applications.

Q: What is the operating temperature range for these diodes?

A: The maximum operating junction temperature for all three parts is 125°C. This specification is identical across CDBU70-HF, CDBU70, and CDBUR70.