CDBU0140R-HF Schottky Diode Equivalent & Substitute Parts

Part Overview

The CDBU0140R-HF is a Schottky rectifier diode manufactured by Comchip Technology, designed for surface mount applications in the 0603C/SOD-523F package. This component operates at 40V DC reverse voltage with 100mA average rectified current, suitable for small signal switching and rectification circuits. The part is currently Active in product status with 1178 pieces in stock. Equivalent and substitute parts are identified to support design flexibility, supply chain continuity, and component availability across manufacturing environments.

Substiute Parts

CDBU0140R-HF

Comchip TechnologyIn Stock: 1245CDBU0140R-HF Datasheet

Current PartRFQ

CDBUR0140R

Comchip TechnologyIn Stock: 3828CDBUR0140R Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CDBU0140R-HF is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match):

• Voltage - DC Reverse (Vr) (Max): 40 V
• Current - Average Rectified (Io): 100 mA
• Voltage - Forward (Vf) (Max) @ If: 450 mV @ 10 mA
• Current - Reverse Leakage @ Vr: 1 µA @ 10 V
• Capacitance @ Vr, F: 6 pF @ 10V, 1MHz
• Operating Temperature - Junction (Max): 125°C

Mechanical Parameters (Must Match):

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

Compliance Parameters (Must Match):

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

The substitute part CDBUR0140R meets all electrical, mechanical, and compliance requirements. The primary distinction is the package designation variant (0603 versus 0603C), which maintains SOD-523F footprint compatibility and interchangeability in surface mount assembly processes.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (CDBU0140R-HF): The CDBU0140R-HF is the specified part number and remains the primary selection when available. Both the main part and substitute are manufactured by Comchip Technology with identical electrical and thermal specifications. Both parts maintain Active product status and full compliance with ROHS3 and REACH requirements.

Substitute Selection (CDBUR0140R): The CDBUR0140R is a direct parametric equivalent suitable for use when CDBU0140R-HF availability is constrained. The substitute part demonstrates higher current inventory (3772 pieces versus 1178 pieces), supporting supply chain continuity. The package designation variant (0603 versus 0603C) maintains full SOD-523F footprint compatibility and does not introduce mechanical or electrical incompatibility in surface mount assembly.

Compliance Assurance: Both parts carry identical RoHS3 compliance status, MSL Level 1 (Unlimited moisture sensitivity), and REACH Unaffected designation. No additional qualification or testing is required when transitioning between these parts within the same design.

Frequently Asked Questions (FAQ)

Q: Can CDBUR0140R be used as a direct replacement for CDBU0140R-HF in production?

A: Yes. Both parts are manufactured by Comchip Technology and share identical electrical parameters (40V reverse voltage, 100mA average rectified current, 450mV forward voltage at 10mA, 1µA reverse leakage, 6pF capacitance). Both use the same 2-SMD, No Lead package with SOD-523F footprint compatibility. No circuit redesign or board layout modification is required.

Q: What is the difference between the 0603C and 0603 package designations?

A: Both designations refer to surface mount packages with SOD-523F footprint compatibility. The package designation variant does not affect electrical performance, thermal characteristics, or mechanical fit on standard surface mount assembly equipment. Both are suitable for automated pick-and-place and reflow soldering processes.

Q: Are there any compliance or certification differences between these parts?

A: No. Both CDBU0140R-HF and CDBUR0140R carry identical RoHS3 compliance, MSL Level 1 (Unlimited), and REACH Unaffected status. Both are suitable for applications requiring environmental and regulatory compliance in consumer, industrial, and automotive markets.

Q: Which part should be selected for new designs?

A: Either part is acceptable for new designs. Selection should be based on current inventory availability and supply chain lead times. Both parts are Active in product status and manufactured by the same supplier with identical specifications.

Q: Is there a performance difference in switching speed or thermal behavior?

A: No. Both parts are classified as Small Signal (≤200mA) Schottky diodes with Any Speed rating. Operating temperature junction maximum is 125°C for both parts. Switching characteristics, reverse recovery time, and thermal performance are equivalent.

Q: Can these parts be mixed in the same production batch?

A: Yes. Both parts meet identical electrical, mechanical, and compliance specifications. Mixed usage within the same production batch does not introduce compatibility issues, performance variation, or reliability concerns.