CDBU0240-HF Schottky Diode Equivalent & Substitute Parts

Part Overview

The CDBU0240-HF is an active 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 a 200mA average rectified current rating. The part is ROHS3 compliant and carries MSL Level 1 (unlimited moisture sensitivity), making it suitable for standard industrial and commercial electronics applications. Equivalent and substitute parts are identified based on matching electrical specifications and compatible package configurations to support component sourcing flexibility and supply chain continuity.

Substiute Parts

CDBU0240-HF

Comchip TechnologyIn Stock: 2411CDBU0240-HF Datasheet

Current PartRFQ

CDBU0240

Comchip TechnologyIn Stock: 41323CDBU0240 Datasheet

Parametric EquivalentRFQ

CDBUR0240

Comchip TechnologyIn Stock: 1126CDBUR0240 Datasheet

Parametric EquivalentRFQ

SD2010S040S2R0

KYOCERA AVXIn Stock: 5267SD2010S040S2R0 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CDBU0240-HF are classified into two categories based on electrical and mechanical compatibility:

Parametric Equivalents share identical electrical specifications and package configurations. These parts are direct functional replacements with no circuit redesign required. Parametric equivalents for CDBU0240-HF include CDBU0240 and CDBUR0240, both manufactured by Comchip Technology. All three parts maintain the same 40V reverse voltage, 200mA average rectified current, 550mV forward voltage drop at 200mA, and 0603C/SOD-523F package footprint. The primary distinction among these equivalents is packaging format: CDBU0240-HF and CDBUR0240 are supplied in Tape & Reel (TR), while CDBU0240 is available in Cut Tape (CT) & Digi-Reel® format.

Manufacturer Recommended Substitutes are identified by the original equipment manufacturer as functional alternatives when parametric equivalents are unavailable. The SD2010S040S2R0 (KYOCERA AVX) is classified as a manufacturer-recommended substitute. This part maintains the 40V reverse voltage specification but differs in current rating (2A versus 200mA), package size (2010/DO-214AC versus 0603C/SOD-523F), and speed classification (Fast Recovery versus Small Signal). This substitute is appropriate only for applications where higher current capacity and larger package footprint are acceptable design modifications.

Key Parameters Determining Substitution:

• Voltage - DC Reverse (Vr) (Max): 40V (all substitutes)
• Technology: Schottky (all substitutes)
• Mounting Type: Surface Mount (all substitutes)
• RoHS Status: ROHS3 Compliant (all substitutes)

Parameter Comparison

Engineering Selection Recommendations

Direct Substitution (Parametric Equivalents):

CDBU0240 and CDBUR0240 are direct functional equivalents to CDBU0240-HF. Both parts maintain identical electrical performance specifications and are compatible with existing PCB layouts designed for the 0603C/SOD-523F footprint. Selection between these three parts is determined by packaging and supply availability:

• CDBU0240-HF: Tape & Reel (TR) packaging, 2400 pcs in stock
• CDBU0240: Cut Tape (CT) & Digi-Reel® packaging, 41300 pcs in stock
• CDBUR0240: Tape & Reel (TR) packaging, 1049 pcs in stock

All three parts carry ROHS3 compliance, MSL Level 1 rating, and REACH Unaffected status, meeting identical regulatory and environmental requirements.

Conditional Substitution (Manufacturer Recommended):

SD2010S040S2R0 (KYOCERA AVX) is a manufacturer-recommended substitute applicable only when circuit design modifications are acceptable. This part introduces the following changes:

• Current rating increases from 200mA to 2A
• Package size increases from 0603C/SOD-523F to 2010/DO-214AC
• Speed classification changes from Small Signal to Fast Recovery
• Reverse leakage current increases from 10µA @ 30V to 200µA @ 40V
• PCB layout and thermal management design must be revised to accommodate the larger package footprint

This substitute is appropriate for applications requiring higher current capacity or where the larger package provides thermal or mechanical advantages. Circuit validation is required before implementation.

Frequently Asked Questions (FAQ)

Q: Can CDBU0240 be used as a direct replacement for CDBU0240-HF?

A: Yes. CDBU0240 is a parametric equivalent with identical electrical specifications (40V reverse voltage, 200mA average rectified current, 550mV forward voltage drop) and compatible package footprint (0603C/SOD-523F). The only difference is packaging format: CDBU0240-HF is supplied in Tape & Reel (TR), while CDBU0240 is available in Cut Tape (CT) & Digi-Reel® format. No circuit redesign is required.

Q: What is the difference between CDBUR0240 and CDBU0240-HF?

A: Both parts are parametric equivalents with identical electrical specifications and the same 0603C/SOD-523F package footprint. Both are supplied in Tape & Reel (TR) packaging. The parts are functionally interchangeable for circuit applications. Inventory availability and supplier lead times are the primary selection criteria.

Q: Can SD2010S040S2R0 replace CDBU0240-HF in my circuit?

A: SD2010S040S2R0 is a manufacturer-recommended substitute only when design modifications are acceptable. This part has a higher current rating (2A versus 200mA), larger package size (2010/DO-214AC versus 0603C/SOD-523F), and different speed classification (Fast Recovery versus Small Signal). PCB layout changes and thermal analysis are required. Use this substitute only if your application requires higher current capacity or if the larger package provides design benefits.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. CDBU0240, CDBUR0240, and SD2010S040S2R0 are all ROHS3 compliant and carry MSL Level 1 (unlimited) moisture sensitivity rating, matching the compliance profile of CDBU0240-HF.

Q: What is the difference in forward voltage drop between CDBU0240-HF and SD2010S040S2R0?

A: CDBU0240-HF has a maximum forward voltage drop of 550mV at 200mA. SD2010S040S2R0 has a maximum forward voltage drop of 500mV at 2A. The lower forward voltage in the SD2010S040S2R0 is measured at a higher current level (2A versus 200mA), so direct comparison requires evaluation at the specific operating current of your application.

Q: Which substitute part has the lowest reverse leakage current?

A: CDBU0240-HF, CDBU0240, and CDBUR0240 all have identical reverse leakage current specifications of 10µA @ 30V. SD2010S040S2R0 has higher reverse leakage current of 200µA @ 40V. For applications sensitive to leakage current, the parametric equivalents (CDBU0240 or CDBUR0240) are preferred.

Q: Can I use CDBU0240-HF in a 2010 package footprint application?

A: No. CDBU0240-HF uses the 0603C/SOD-523F package footprint and is not compatible with 2010 package layouts. SD2010S040S2R0 is available in the 2010/DO-214AC package for applications requiring this larger footprint.