ACDBC340-HF Schottky Diode 40V 3A Equivalent & Substitute Parts

Part Overview

The ACDBC340-HF is an active Schottky rectifier diode manufactured by Comchip Technology, rated for 40V DC reverse voltage and 3A average rectified current in a surface mount DO-214AB (SMC) package. This component is designed for fast recovery applications requiring low forward voltage drop and is qualified to AEC-Q101 automotive standards. Substitute parts are identified when equivalent electrical and mechanical parameters are available from alternative manufacturers, enabling supply chain flexibility and inventory optimization while maintaining circuit performance specifications.

Substiute Parts

ACDBC340-HF

Comchip TechnologyIn Stock: 1047ACDBC340-HF Datasheet

Current PartRFQ

B340-13-F

Diodes IncorporatedIn Stock: 51481B340-13-F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ACDBC340-HF is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Voltage - DC Reverse (Vr) (Max): 40 V (exact match required)
• Current - Average Rectified (Io): 3 A (exact match required)
• Technology: Schottky (exact match required)
• Speed: Fast Recovery ≤ 500ns, > 200mA (Io) (exact match required)
• Current - Reverse Leakage @ Vr: 500 µA @ 40 V (exact match required)
• Operating Temperature - Junction: -55°C to 125°C (exact match required)

Mechanical Equivalence Requirements:

• Package / Case: DO-214AB, SMC (exact match required)
• Mounting Type: Surface Mount (exact match required)

Compliance Requirements:

• RoHS Status: ROHS3 Compliant (minimum requirement)
• Moisture Sensitivity Level (MSL): 1 (Unlimited) (minimum requirement)

The substitute part B340-13-F from Diodes Incorporated meets all electrical and mechanical equivalence criteria and satisfies compliance requirements. Packaging format differences (Tape & Reel vs. Cut Tape & Digi-Reel®) do not affect electrical or mechanical compatibility and represent supply chain variations only.

Parameter Comparison

Engineering Selection Recommendations

Primary Part: ACDBC340-HF

• Manufacturer: Comchip Technology
• Status: Active
• Compliance: AEC-Q101 Automotive Qualification, ROHS3 Compliant
• Inventory: 992 Pcs New Original In Stock
• Selection basis: Automotive-grade qualification and established supply availability

Substitute Part: B340-13-F

• Manufacturer: Diodes Incorporated
• Status: Active
• Compliance: ROHS3 Compliant, REACH Unaffected
• Inventory: 51465 Pcs New Original In Stock
• Selection basis: Electrical and mechanical equivalence with superior forward voltage performance (500 mV vs. 550 mV @ 3 A) and significantly higher inventory availability

Both parts satisfy the electrical, mechanical, and compliance requirements for direct substitution in 40V 3A Schottky rectifier applications. Selection between them is determined by supply chain requirements, inventory availability, and cost considerations. The B340-13-F offers improved forward voltage characteristics and substantially higher stock levels.

Frequently Asked Questions (FAQ)

Q: Can B340-13-F replace ACDBC340-HF in automotive applications? A: B340-13-F meets all electrical and mechanical equivalence parameters required for substitution. However, ACDBC340-HF carries AEC-Q101 automotive qualification while B340-13-F does not. Automotive application suitability depends on specific design requirements and qualification protocols established for your application.

Q: What is the significance of the forward voltage difference (550 mV vs. 500 mV)? A: B340-13-F exhibits lower forward voltage drop at 3A rated current. This represents improved efficiency and reduced power dissipation. Both values fall within acceptable Schottky diode performance ranges for 40V 3A applications. Circuit thermal analysis should confirm acceptability of either value.

Q: Are the packaging formats (Tape & Reel vs. Cut Tape & Digi-Reel®) interchangeable? A: Packaging format differences represent supply chain variations only. Both formats contain electrically and mechanically identical components in DO-214AB (SMC) packages. Packaging selection is determined by assembly equipment compatibility and procurement preferences, not electrical performance.

Q: Why does B340-13-F show higher capacitance (200 pF vs. 150 pF)? A: Capacitance variation within the specified range reflects normal manufacturing tolerance and device geometry differences between manufacturers. Both values are within acceptable parameters for Schottky diode applications. High-frequency circuit performance should be verified if capacitance is a critical design parameter.

Q: What does MSL 1 (Unlimited) mean for storage and handling? A: MSL 1 classification indicates unlimited shelf life without moisture bake-out requirements. Both parts can be stored under standard industrial conditions without special moisture control procedures.

Q: Can these parts be used interchangeably in new designs? A: Yes, for non-automotive applications. For automotive designs, AEC-Q101 qualification status must be evaluated against design requirements. Electrical and mechanical parameters are equivalent; qualification and compliance status differ.