CDBFR0140L Schottky Diode Equivalent & Substitute Parts

Part Overview

The CDBFR0140L is a Schottky rectifier diode manufactured by Comchip Technology, rated for 40V DC reverse voltage with 100mA average rectified current in a 1005/SOD-323F surface mount package. This component is classified as obsolete product status. Identification of equivalent and substitute parts is necessary to maintain design continuity and ensure supply chain availability for applications requiring this diode specification.

Substiute Parts

CDBFR0140L

Comchip TechnologyIn Stock: 950CDBFR0140L Datasheet

Current PartRFQ

CDBF0140R-HF

Comchip TechnologyIn Stock: 670CDBF0140R-HF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDBFR0140L is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Voltage - DC Reverse (Vr) (Max): 40 V
• Current - Average Rectified (Io): 100 mA
• Package / Case: 1005 (2512 Metric)
• Mounting Type: Surface Mount
• Technology: Schottky

Allowable Variation Parameters:

• Voltage - Forward (Vf) (Max) @ If: May vary within acceptable circuit design margins
• Current - Reverse Leakage @ Vr: Lower values indicate improved performance characteristics
• Capacitance @ Vr, F: Identical specification across substitutes

The CDBF0140R-HF qualifies as a direct substitute based on matching all mandatory parameters while demonstrating improved electrical characteristics in forward voltage drop and reverse leakage current.

Parameter Comparison

Engineering Selection Recommendations

CDBF0140R-HF is the qualified substitute for CDBFR0140L based on the following engineering criteria:

1. Product Status Alignment: The substitute part (CDBF0140R-HF) maintains Active product status, ensuring continued availability and manufacturing support, whereas the main part is classified as Obsolete.

2. Regulatory Compliance: Both parts maintain identical ROHS3 compliance and REACH unaffected status, satisfying environmental and regulatory requirements.

3. Electrical Performance: The substitute demonstrates superior electrical characteristics with reduced forward voltage drop (450 mV @ 10 mA versus 550 mV @ 100 mA) and significantly lower reverse leakage current (1 µA @ 10 V versus 30 µA @ 10 V), resulting in improved circuit efficiency and reduced power dissipation.

4. Package and Mounting Compatibility: Identical 1005/SOD-323F package specification and surface mount configuration ensure direct PCB compatibility without layout modifications.

5. Thermal Characteristics: Matching maximum junction temperature rating (125°C) maintains thermal design margins.

The primary distinction between parts is packaging format: CDBFR0140L is supplied in Cut Tape (CT) & Digi-Reel® format, while CDBF0140R-HF is supplied in Tape & Reel (TR) format. This difference affects procurement and handling procedures but does not impact electrical or mechanical compatibility.

Frequently Asked Questions (FAQ)

Q: Can CDBF0140R-HF be used as a direct replacement for CDBFR0140L in existing designs?

A: Yes. Both parts share identical voltage rating (40V), current rating (100mA), package type (1005/SOD-323F), and mounting configuration (surface mount). The substitute part demonstrates improved electrical performance characteristics.

Q: What is the difference between Cut Tape (CT) & Digi-Reel® and Tape & Reel (TR) packaging?

A: Cut Tape packaging supplies components on tape that has been cut into smaller segments, suitable for lower-volume applications. Tape & Reel packaging supplies components on continuous tape wound on reels, optimized for high-volume automated assembly. Both formats contain identical components; the difference is in supply format and handling procedures.

Q: Are there any circuit design considerations when switching from CDBFR0140L to CDBF0140R-HF?

A: The substitute part exhibits lower forward voltage drop and reverse leakage current. These improvements result in reduced power dissipation and improved circuit efficiency. No circuit modifications are required; the substitute is electrically compatible across all specified operating conditions.

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

A: Yes. Both CDBFR0140L and CDBF0140R-HF are ROHS3 compliant and REACH unaffected, meeting identical environmental and regulatory requirements.

Q: Why is CDBFR0140L classified as obsolete?

A: Product status reflects manufacturer lifecycle decisions. The CDBF0140R-HF maintains active status and provides equivalent functionality with improved performance characteristics, making it the recommended selection for new designs and ongoing production.