RS3J Equivalent & Substitute Parts Reference

Part Overview

The RS3J is a general-purpose rectifier diode manufactured by SMC Diode Solutions, rated for 600 V DC reverse voltage and 3 A average rectified current in a Surface Mount SMC (DO-214AB) package. This diode is classified as Active product status and features fast recovery characteristics with a reverse recovery time of 250 ns. The part is RoHS3 compliant and carries unlimited moisture sensitivity level (MSL 1).

Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity when the primary part number becomes unavailable or when alternative sourcing is required for specific application requirements.

Substiute Parts

RS3J

SMC Diode SolutionsIn Stock: 30245RS3J Datasheet

Current PartRFQ

STTH3R06S

STMicroelectronicsIn Stock: 7838STTH3R06S Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RS3J are identified based on strict electrical and mechanical parameter matching within the rectifier diode category. The substitution logic is based on the following critical parameters:

Electrical Matching Criteria:

• Voltage - DC Reverse (Vr) (Max): 600 V
• Current - Average Rectified (Io): 3 A
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
• Package / Case: DO-214AB, SMC

Mechanical Matching Criteria:

• Mounting Type: Surface Mount
• Supplier Device Package: SMC

Compliance Matching Criteria:

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

Parts meeting all these criteria are classified as direct substitutes. Variations in forward voltage (Vf), reverse recovery time (trr), reverse leakage current, and maximum junction temperature are permitted within the scope of fast recovery rectifier diode specifications, provided the core electrical ratings and package type remain identical.

Parameter Comparison

Engineering Selection Recommendations

RS3J (SMC Diode Solutions): The RS3J is the primary part number and remains the first choice for new designs and procurement. It is Active product status with full RoHS3 compliance and unlimited moisture sensitivity level. The part carries 30,200 pieces in current inventory stock.

STTH3R06S (STMicroelectronics): The STTH3R06S is a direct electrical and mechanical substitute for the RS3J. Both parts share identical voltage ratings (600 V), current ratings (3 A), package type (DO-214AB, SMC), and mounting configuration (Surface Mount). Both are Active product status with ROHS3 compliance and MSL 1 (Unlimited).

The STTH3R06S exhibits superior performance characteristics in specific parameters: reverse recovery time of 35 ns (compared to 250 ns for RS3J) and lower reverse leakage current of 3 µA (compared to 10 µA for RS3J). The maximum junction temperature rating is 175°C for STTH3R06S versus 150°C for RS3J. Forward voltage is higher at 1.7 V @ 3 A compared to 1.3 V @ 3 A for RS3J.

Selection between these parts is determined by application-specific requirements regarding forward voltage drop, reverse recovery time, leakage current, and thermal operating range. Both parts are suitable for general-purpose rectification applications in the 600 V, 3 A classification.

Frequently Asked Questions (FAQ)

Q: Can STTH3R06S be used as a direct replacement for RS3J in existing designs?

A: Yes. Both parts share identical voltage ratings (600 V), current ratings (3 A), package type (DO-214AB, SMC), and surface mount configuration. Both are RoHS3 compliant with MSL 1. However, the forward voltage drop differs (1.7 V vs. 1.3 V @ 3 A), which may affect circuit performance in applications sensitive to voltage drop. Reverse recovery time is significantly faster for STTH3R06S (35 ns vs. 250 ns), which may improve switching performance in high-frequency applications.

Q: What are the key differences between RS3J and STTH3R06S?

A: The primary differences are: (1) Forward voltage: RS3J is 1.3 V @ 3 A; STTH3R06S is 1.7 V @ 3 A. (2) Reverse recovery time: RS3J is 250 ns; STTH3R06S is 35 ns. (3) Reverse leakage current: RS3J is 10 µA @ 600 V; STTH3R06S is 3 µA @ 600 V. (4) Maximum junction temperature: RS3J is 150°C; STTH3R06S is 175°C. All other electrical and mechanical parameters are identical.

Q: Are both parts available in the same package?

A: Yes. Both RS3J and STTH3R06S are supplied in DO-214AB SMC (Surface Mount) package. Both are surface mount components suitable for automated assembly processes.

Q: Do both parts meet the same compliance standards?

A: Yes. Both RS3J and STTH3R06S are RoHS3 compliant and carry Moisture Sensitivity Level 1 (Unlimited). Both are classified as Active product status. The STTH3R06S is REACH Unaffected, while RS3J is REACH Affected.

Q: Which part should be selected for high-temperature applications?

A: The STTH3R06S has a maximum junction temperature rating of 175°C, compared to 150°C for RS3J. For applications requiring operation near or above 150°C, STTH3R06S is the appropriate selection.

Q: Which part has lower power dissipation?

A: The RS3J has lower forward voltage (1.3 V @ 3 A) compared to STTH3R06S (1.7 V @ 3 A). Lower forward voltage results in lower power dissipation in the diode. For applications where power dissipation is critical, RS3J is the preferred selection.

Q: Are there any inventory considerations between these parts?

A: RS3J has 30,200 pieces in current stock. STTH3R06S has 7,789 pieces in current stock. Procurement decisions may be influenced by required lead times and inventory availability.