SDURB1620CT Equivalent & Substitute Parts

Part Overview

The SDURB1620CT is a general-purpose diode array manufactured by SMC Diode Solutions, configured as a 1 Pair Common Cathode rectifier with a maximum reverse voltage rating of 200 V. This component is housed in a Surface Mount TO-263-3 D2PAK package and is classified as Active product status with full RoHS3 compliance. The device operates across a junction temperature range of -55°C to 150°C and features fast recovery characteristics with a reverse recovery time of 35 ns. Equivalent and substitute parts are identified to provide design flexibility when the primary part number becomes unavailable or when alternative sourcing is required while maintaining electrical and mechanical compatibility.

Substiute Parts

SDURB1620CT

SMC Diode SolutionsIn Stock: 893SDURB1620CT Datasheet

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STTH3002CG-TR

STMicroelectronicsIn Stock: 15352STTH3002CG-TR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SDURB1620CT are identified based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Electrical Compatibility Criteria:

• Diode Configuration: 1 Pair Common Cathode (identical topology required)
• Voltage - DC Reverse (Vr) (Max): 200 V (equal or higher rating acceptable)
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io) (same speed class required)
• Package / Case: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB (identical package required)
• Mounting Type: Surface Mount (identical mounting required)

Compliance Criteria:

• RoHS3 Compliance (required for equivalent substitution)
• Moisture Sensitivity Level: 1 (Unlimited) (compatible MSL rating)

The STTH3002CG-TR from STMicroelectronics qualifies as a substitute part because it maintains identical diode configuration, reverse voltage rating, speed classification, and package specifications. The substitute part demonstrates enhanced performance characteristics in forward voltage drop and reverse recovery time while maintaining full electrical and mechanical compatibility with the SDURB1620CT.

Parameter Comparison

Engineering Selection Recommendations

The STTH3002CG-TR from STMicroelectronics is a qualified substitute for the SDURB1620CT based on the following engineering criteria:

Electrical Equivalence: Both parts maintain identical diode configuration (1 Pair Common Cathode), reverse voltage rating (200 V), speed classification (Fast Recovery ≤ 500ns, > 200mA), and package specification (TO-263-3 D2PAK). The substitute part demonstrates superior performance in reverse recovery time (22 ns versus 35 ns) and lower forward voltage drop (1.05 V @ 15 A versus 1.2 V @ 8 A), indicating enhanced switching efficiency and reduced thermal dissipation.

Compliance and Certification: Both parts are RoHS3 compliant and carry Moisture Sensitivity Level 1 (Unlimited), ensuring compatibility with standard manufacturing and storage protocols. Both parts are classified under ECCN EAR99 and HTSUS 8541.10.0080.

Product Status: Both parts maintain Active product status, ensuring continued availability and manufacturing support.

Thermal Performance: The substitute part is rated for a maximum junction temperature of 175°C compared to 150°C for the primary part, providing additional thermal margin in high-temperature operating environments.

Packaging Format: The STTH3002CG-TR is supplied in Cut Tape (CT) format, whereas the SDURB1620CT is supplied in Tape & Reel (TR) format. Both formats are compatible with standard surface mount assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the STTH3002CG-TR be used as a direct replacement for the SDURB1620CT in existing circuit designs?

A: Yes. Both parts share identical diode configuration, reverse voltage rating, speed classification, and TO-263-3 D2PAK package specification. The electrical and mechanical interfaces are fully compatible, allowing direct substitution without circuit modification.

Q: What are the key differences between these two parts?

A: The primary differences are manufacturer (SMC Diode Solutions versus STMicroelectronics), current rating (not specified for SDURB1620CT versus 15 A for STTH3002CG-TR), forward voltage drop (1.2 V @ 8 A versus 1.05 V @ 15 A), reverse recovery time (35 ns versus 22 ns), maximum junction temperature (150°C versus 175°C), and packaging format (Tape & Reel versus Cut Tape). The STTH3002CG-TR demonstrates improved switching performance and thermal capability.

Q: Are there any compatibility concerns with the D2PAK package?

A: No. Both parts use the identical TO-263-3 D2PAK (2 Leads + Tab) package specification, ensuring mechanical and thermal compatibility with existing PCB layouts and assembly processes.

Q: Does the substitute part meet the same compliance requirements?

A: Yes. Both parts are RoHS3 compliant, carry Moisture Sensitivity Level 1 (Unlimited), and are classified under the same ECCN (EAR99) and HTSUS (8541.10.0080) codes.

Q: What is the significance of the reverse recovery time difference?

A: The STTH3002CG-TR exhibits a reverse recovery time of 22 ns compared to 35 ns for the SDURB1620CT. This faster recovery characteristic reduces switching losses and improves overall circuit efficiency, particularly in high-frequency switching applications.

Q: Is the higher reverse leakage current of the substitute part a concern?

A: The STTH3002CG-TR exhibits reverse leakage current of 20 µA @ 200 V compared to 5 µA @ 200 V for the SDURB1620CT. This difference is within acceptable limits for general-purpose rectifier applications and does not compromise circuit functionality in standard operating conditions.

Q: Can the substitute part handle higher current levels?

A: Yes. The STTH3002CG-TR is rated for 15 A average rectified current per diode, whereas the SDURB1620CT does not specify a current rating. The substitute part provides higher current capacity, making it suitable for applications requiring increased current handling capability.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging supplies components on continuous reels for high-volume automated assembly. Cut Tape (CT) packaging supplies components on tape segments, typically used for lower-volume orders or manual assembly. Both formats are compatible with standard surface mount assembly equipment.