RR255LA-400TR Equivalent & Substitute Parts

Part Overview

The RR255LA-400TR is a Schottky diode manufactured by Rohm Semiconductor, rated for 400V DC reverse voltage with 0.7A average rectified current. This component is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. The part is ROHS3 compliant with unlimited moisture sensitivity (MSL 1) and is subject to REACH regulations.

Substiute Parts

RR255LA-400TR

Rohm SemiconductorIn Stock: 913RR255LA-400TR Datasheet

Current PartRFQ

RRD07MM4STR

Rohm SemiconductorIn Stock: 7477RRD07MM4STR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The RR255LA-400TR has been identified with one direct substitute: the RRD07MM4STR. This substitution is valid based on the following electrical and mechanical parameters:

Matching Electrical Specifications:

• Voltage - DC Reverse (Vr) (Max): 400V (identical)
• Current - Average Rectified (Io): 700mA (equivalent to 0.7A)
• Manufacturer: Rohm Semiconductor (same manufacturer)
• Category: Diodes, Rectifiers (same category)

Compliance Alignment:

• RoHS Status: ROHS3 Compliant (both parts)
• Moisture Sensitivity Level: MSL 1 (both parts)
• ECCN: EAR99 (both parts)
• HTSUS Code: 8541.10.0080 (both parts)

Product Status Consideration: The substitute part RRD07MM4STR carries Active product status, making it suitable for ongoing procurement and new design implementations where the obsolete RR255LA-400TR is no longer available.

Parameter Comparison

Engineering Selection Recommendations

The RRD07MM4STR is the direct substitute for the obsolete RR255LA-400TR based on electrical parameter equivalence and regulatory compliance alignment. Both components meet ROHS3 requirements and carry identical ECCN and HTSUS classifications, ensuring regulatory consistency in procurement and supply chain management.

The substitute part offers the advantage of Active product status, providing long-term availability and supply chain stability compared to the obsolete original part. The REACH Unaffected status of the substitute part may provide additional regulatory benefits in certain jurisdictions and supply chain scenarios.

Both parts are manufactured by Rohm Semiconductor and utilize the PMDU package designation, maintaining consistency with the original design intent. The substitute part is available in Surface Mount configuration with SOD-123F package, which is the standard modern implementation for this device class.

Frequently Asked Questions (FAQ)

Q: What makes RRD07MM4STR a valid substitute for RR255LA-400TR?

A: The RRD07MM4STR matches the critical electrical parameters of the RR255LA-400TR: 400V DC reverse voltage rating and 700mA average rectified current. Both parts are manufactured by Rohm Semiconductor, carry ROHS3 compliance, MSL 1 rating, and identical ECCN/HTSUS classifications. The substitute part is Active status, ensuring ongoing availability.

Q: Are there packaging differences between the main part and substitute?

A: The RRD07MM4STR is specified as Surface Mount in SOD-123F package. The original RR255LA-400TR packaging details are not provided in the available specifications. Both parts utilize the PMDU supplier device package designation.

Q: What is the difference in REACH status between these parts?

A: The RR255LA-400TR carries REACH Affected status, while the RRD07MM4STR is REACH Unaffected. This distinction may impact supply chain documentation and regulatory compliance requirements depending on end-use application and geographic market.

Q: Can RRD07MM4STR be used in existing designs originally specified for RR255LA-400TR?

A: Electrical parameter compatibility is confirmed through matching voltage and current ratings. Physical compatibility depends on the original design's package and mounting requirements. The substitute part's Surface Mount SOD-123F configuration must align with the PCB layout and assembly process of the original design.

Q: What inventory status should be considered for procurement decisions?

A: The RR255LA-400TR shows 897 pieces in stock as new original inventory. The RRD07MM4STR shows 7424 pieces in stock. The substitute part's significantly higher inventory level supports long-term procurement planning and production continuity.