SDURD530 Equivalent & Substitute Parts

Part Overview

The SDURD530 is a general-purpose rectifier diode manufactured by SMC Diode Solutions, rated for 300 V DC reverse voltage with fast recovery characteristics. This surface mount component in DPAK packaging is designed for standard rectification applications requiring reliable performance across industrial temperature ranges.

The SDURD530 maintains active product status with current inventory availability. Identifying equivalent and substitute parts is necessary to support supply chain flexibility, manage component obsolescence risks, and accommodate design variations across manufacturing facilities or procurement channels.

Substiute Parts

SDURD530

SMC Diode SolutionsIn Stock: 3125SDURD530 Datasheet

Current PartRFQ

MURD530T4G

onsemiIn Stock: 10296MURD530T4G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SDURD530 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Criteria:

• Voltage - DC Reverse (Vr) (Max): 300 V
• Package / Case: TO-252-3, DPAK (2 Leads + Tab), SC-63
• Mounting Type: Surface Mount
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Allowable Parameter Variations:

• Voltage - Forward (Vf) (Max) @ If: Substitute values must not exceed the maximum specified for the application
• Reverse Recovery Time (trr): Substitute values must not exceed 500 ns
• Current - Reverse Leakage @ Vr: Lower values indicate improved performance
• Operating Temperature - Junction: Extended ranges are acceptable

The MURD530T4G from onsemi satisfies all mandatory matching criteria and is therefore qualified as a direct substitute for the SDURD530.

Parameter Comparison

Engineering Selection Recommendations

SDURD530 (Primary Selection): The SDURD530 maintains active product status with established supply availability (3059 pcs in stock). This component is suitable for applications where current production continuity and established supply chains are prioritized. ROHS3 compliance and MSL 1 rating confirm suitability for standard manufacturing and storage environments.

MURD530T4G (Substitute Selection): The MURD530T4G is classified as obsolete but remains available in higher inventory quantities (10200 pcs). This substitute demonstrates superior electrical performance characteristics: lower forward voltage drop (1.05 V vs. 1.3 V) and significantly reduced reverse leakage current (5 µA vs. 30 µA). The extended operating temperature range (-55 to 175°C vs. -55 to 150°C) provides additional thermal margin. ROHS3 compliance ensures regulatory equivalence. Selection of this substitute is appropriate for applications where performance optimization or extended thermal operation is required, provided that component obsolescence status does not conflict with long-term supply requirements.

Both components satisfy identical packaging, mounting, and compliance requirements, enabling direct substitution at the PCB assembly level without design modification.

Frequently Asked Questions (FAQ)

Q: Can the MURD530T4G replace the SDURD530 in existing designs?

A: Yes. Both components share identical package specifications (TO-252-3, DPAK), mounting type (surface mount), and voltage ratings (300 V). PCB layout and assembly processes require no modification. The MURD530T4G demonstrates equivalent or superior electrical performance across all measured parameters.

Q: What is the significance of the MURD530T4G obsolete status?

A: Obsolete status indicates that onsemi has discontinued active production and support for this component. However, current inventory availability (10200 pcs) supports near-term procurement. Long-term supply planning should account for potential future unavailability. The SDURD530 (active status) is recommended for new designs requiring extended production lifecycles.

Q: How do forward voltage differences affect circuit performance?

A: The MURD530T4G exhibits lower forward voltage (1.05 V vs. 1.3 V at 5 A). This 0.25 V reduction decreases power dissipation and heat generation in rectification circuits. Applications with tight thermal budgets or high-frequency switching benefit from this characteristic. Circuits designed for the SDURD530 forward voltage specification operate within acceptable margins with the MURD530T4G.

Q: What does the reverse leakage current difference indicate?

A: The MURD530T4G reverse leakage current (5 µA @ 300 V) is significantly lower than the SDURD530 (30 µA @ 300 V). Lower leakage current indicates superior reverse blocking performance and reduced standby power consumption. This characteristic is particularly beneficial in high-impedance or precision rectification applications.

Q: Are there temperature range considerations for substitution?

A: The MURD530T4G supports extended junction temperature operation (-55 to 175°C vs. -55 to 150°C). This 25°C additional margin accommodates applications with elevated ambient temperatures or high thermal loads. Designs operating within the SDURD530 temperature specification function without modification using the MURD530T4G.

Q: Do packaging and moisture sensitivity requirements differ?

A: No. Both components use identical DPAK packaging (TO-252-3, SC-63) and share MSL 1 (Unlimited) moisture sensitivity classification. Storage, handling, and assembly processes are identical. No special precautions are required when transitioning between these components.

Q: What compliance certifications apply to both components?

A: Both the SDURD530 and MURD530T4G are ROHS3 compliant and carry identical ECCN (EAR99) and HTSUS (8541.10.0080) classifications. Regulatory and export compliance requirements are satisfied by either component.