ACURB205-HF Equivalent & Substitute Parts Reference

Part Overview

The ACURB205-HF is a general-purpose rectifier diode manufactured by Comchip Technology, rated for 600 V DC reverse voltage and 2 A average rectified current in a surface mount DO-214AA (SMB) package. This component is classified as Active product status with AEC-Q101 automotive qualification and ROHS3 compliance. Substitute parts are identified to address inventory availability, lead time constraints, or specific application requirements while maintaining electrical and mechanical compatibility within the defined parameter envelope.

Key Parameters

Parameter	Value	Unit	Significance for Substitution
Voltage - DC Reverse (Vr) (Max)	600	V	Critical - must match or exceed
Current - Average Rectified (Io)	2	A	Critical - must match or exceed
Voltage - Forward (Vf) (Max) @ If	1.7	V @ 2 A	Performance - lower values preferred
Reverse Recovery Time (trr)	75	ns	Performance - fast recovery classification
Current - Reverse Leakage @ Vr	5	µA @ 600 V	Performance - lower values preferred
Package / Case	DO-214AA, SMB	-	Critical - mechanical compatibility
Mounting Type	Surface Mount	-	Critical - assembly process compatibility
Operating Temperature - Junction	-55°C ~ 150°C	°C	Application dependent

Substitute Part Grouping Explanation

Substitute parts for the ACURB205-HF are classified based on strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters (Non-negotiable):

Voltage - DC Reverse (Vr) (Max): 600 V minimum
Current - Average Rectified (Io): 2 A minimum
Package / Case: DO-214AA (SMB)
Mounting Type: Surface Mount
Speed Classification: Fast Recovery ≤ 500 ns, > 200 mA (Io)

Performance Parameters (Allowable Variation):

Voltage - Forward (Vf) (Max) @ If: Values at or below 1.7 V @ 2 A are acceptable
Reverse Recovery Time (trr): 75 ns specification
Current - Reverse Leakage @ Vr: 5 µA @ 600 V specification
Operating Temperature Range: Application-dependent; extended ranges acceptable

All identified substitute parts meet the critical matching parameters and maintain compatibility with the original ACURB205-HF in terms of electrical performance and physical form factor.

Parameter Comparison

Parameter	ACURB205-HF (Comchip)	MURS260-M3/52T (Vishay)	HS2J (Taiwan Semiconductor)
Manufacturer	Comchip Technology	Vishay General Semiconductor - Diodes Division	Taiwan Semiconductor Corporation
Voltage - DC Reverse (Vr) (Max)	600 V	600 V	600 V
Current - Average Rectified (Io)	2 A	2 A	2 A
Voltage - Forward (Vf) (Max) @ If	1.7 V @ 2 A	1.45 V @ 2 A	1.7 V @ 2 A
Reverse Recovery Time (trr)	75 ns	75 ns	75 ns
Current - Reverse Leakage @ Vr	5 µA @ 600 V	5 µA @ 600 V	5 µA @ 600 V
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction	-55°C ~ 150°C	-65°C ~ 175°C	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

MURS260-M3/52T (Vishay General Semiconductor - Diodes Division): This part is designated as the manufacturer-recommended substitute. It meets all critical electrical parameters with identical voltage and current ratings. The forward voltage specification of 1.45 V @ 2 A is lower than the ACURB205-HF, indicating improved thermal efficiency. Extended operating temperature range (-65°C ~ 175°C) provides broader application coverage. ROHS3 compliance and MSL 1 rating ensure environmental and moisture compatibility. This substitute is suitable for direct replacement in production environments where Vishay component qualification is acceptable.

HS2J (Taiwan Semiconductor Corporation): This part is designated as a parametric equivalent. Electrical specifications match the ACURB205-HF identically, including forward voltage (1.7 V @ 2 A) and operating temperature range (-55°C ~ 150°C). Package, mounting type, and all critical performance parameters are equivalent. ROHS3 compliance and MSL 1 rating confirm regulatory alignment. This substitute is suitable for applications requiring parametric equivalence with the original part.

Both substitute parts maintain Active product status and are available in volume quantities, supporting supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can MURS260-M3/52T be used as a direct replacement for ACURB205-HF? A: Yes. Both parts share identical voltage (600 V), current (2 A), package (DO-214AA/SMB), and mounting specifications. The MURS260-M3/52T exhibits lower forward voltage (1.45 V vs. 1.7 V @ 2 A), which is a performance advantage. Extended temperature range (-65°C ~ 175°C) provides additional operational margin.

Q: What is the difference between MURS260-M3/52T and HS2J? A: Both are qualified substitutes. MURS260-M3/52T offers lower forward voltage (1.45 V) and extended temperature range (-65°C ~ 175°C). HS2J provides parametric equivalence with identical forward voltage (1.7 V) and matching temperature range (-55°C ~ 150°C) to the ACURB205-HF. Selection depends on thermal performance requirements and supplier qualification preferences.

Q: Are all three parts in the same package? A: Yes. ACURB205-HF, MURS260-M3/52T, and HS2J all use DO-214AA (SMB) surface mount package with identical pin configuration and footprint compatibility.

Q: Do substitute parts meet automotive qualification requirements? A: The ACURB205-HF carries AEC-Q101 automotive qualification. Substitute parts MURS260-M3/52T and HS2J are not explicitly listed with AEC-Q101 certification in the provided specifications. Automotive application requirements must be evaluated against specific qualification documentation.

Q: What is the moisture sensitivity level for these parts? A: All three parts—ACURB205-HF, MURS260-M3/52T, and HS2J—are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.

Q: Are these parts RoHS compliant? A: Yes. All three parts are ROHS3 compliant, meeting current environmental and hazardous substance restrictions.

Q: Which substitute offers the best thermal performance? A: MURS260-M3/52T exhibits the lowest forward voltage specification (1.45 V @ 2 A) compared to ACURB205-HF and HS2J (both 1.7 V @ 2 A), resulting in reduced power dissipation and improved thermal efficiency.

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