FS2J-LTP Equivalent & Substitute Parts

Part Overview

The FS2J-LTP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 600 V DC reverse voltage and 2 A average rectified current in a surface mount DO-214AC (SMA) package. This component is classified as Active product status and is RoHS3 compliant with unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when equivalent electrical performance parameters are met within acceptable tolerances for the application circuit. The FS2J-LTP operates across a junction temperature range of -50°C to 150°C with fast recovery characteristics (≤500 ns) and a reverse recovery time of 250 ns.

Substiute Parts

FS2J-LTP

Micro Commercial CoIn Stock: 913FS2J-LTP Datasheet

Current PartRFQ

RF2L6STE25

Rohm SemiconductorIn Stock: 7753RF2L6STE25 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FS2J-LTP is determined by the following critical parameters:

Mandatory Matching Criteria:

• Voltage - DC Reverse (Vr) (Max): 600 V minimum
• Package / Case: DO-214AC (SMA) surface mount configuration
• Mounting Type: Surface Mount
• RoHS3 Compliance: Required
• MSL Rating: 1 (Unlimited) or equivalent

Performance Criteria:

• Current - Average Rectified (Io): Equal to or greater than 2 A
• Speed Classification: Fast Recovery (≤500 ns, >200 mA)
• Operating Temperature Range: Minimum -50°C to 150°C junction temperature capability

The RF2L6STE25 from Rohm Semiconductor meets the voltage, package, and compliance requirements. However, the current rating of 1.5 A is below the 2 A specification of the FS2J-LTP. This part is classified as "Not For New Designs," which affects its suitability for new applications.

Parameter Comparison

Engineering Selection Recommendations

For Active New Designs: The FS2J-LTP is the primary selection for new circuit designs. It carries Active product status, ensuring long-term availability and manufacturer support. The part meets all RoHS3 and REACH compliance requirements with unlimited moisture sensitivity rating, suitable for standard manufacturing processes.

For Legacy or Replacement Applications: The RF2L6STE25 is electrically compatible at the voltage and package level but carries "Not For New Designs" status from the manufacturer. This designation indicates the part is available for existing applications but should not be selected for new product development. The RF2L6STE25 exhibits superior reverse recovery time (35 ns versus 250 ns), which may provide performance benefits in specific switching applications. However, the reduced current rating of 1.5 A compared to the 2 A specification of the FS2J-LTP requires circuit analysis to confirm adequacy for the intended application.

Both parts maintain identical compliance certifications (RoHS3, REACH Unaffected, EAR99 ECCN classification) and moisture sensitivity levels, ensuring equivalent handling and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can the RF2L6STE25 directly replace the FS2J-LTP in all applications?

A: The RF2L6STE25 is electrically compatible at the voltage and package level. However, the current rating difference (1.5 A versus 2 A) requires circuit verification. Applications operating at or near the 2 A specification cannot use the RF2L6STE25 without redesign. The "Not For New Designs" status also restricts its use in new product development.

Q: What is the significance of the "Not For New Designs" designation on the RF2L6STE25?

A: This designation indicates the manufacturer (Rohm Semiconductor) is not recommending this part for new circuit designs. While the part remains available for existing applications and replacements, it should not be selected for new products. The FS2J-LTP, with Active status, is the appropriate choice for new designs.

Q: Are the package dimensions identical between these parts?

A: Both parts use the DO-214AC (SMA) surface mount package. Physical dimensions and PCB footprints are equivalent, allowing direct mechanical substitution at the board level.

Q: How do the reverse recovery times compare, and does this matter?

A: The RF2L6STE25 exhibits 35 ns reverse recovery time compared to 250 ns for the FS2J-LTP. Faster recovery time reduces switching losses and improves efficiency in high-frequency applications. However, this parameter is application-dependent and does not automatically indicate superiority for all circuit topologies.

Q: Are there compliance or handling differences between these parts?

A: Both parts are RoHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity ratings. Handling, storage, and manufacturing process requirements are identical.

Q: What is the impact of the higher reverse leakage current in the RF2L6STE25?

A: The RF2L6STE25 specifies 10 µA reverse leakage at 600 V compared to 5 µA for the FS2J-LTP. This difference is negligible in most applications but may affect performance in precision analog circuits or high-impedance applications where leakage current is a critical parameter.