RM 2B Equivalent & Substitute Parts Reference

Part Overview

The RM 2B is an obsolete general-purpose diode rectifier with a 800 V maximum reverse voltage and 1.2A average rectified current, supplied in a through-hole axial package. Its product status as "Obsolete" necessitates the identification of equivalent or substitute models in the Diodes, Rectifiers category that meet or exceed the original electrical and mechanical parameters, ensuring continuity in designs where RM 2B was previously specified.

Substiute Parts

RM 2B

Sanken Electric USA Inc.In Stock: 979RM 2B Datasheet

Current PartRFQ

1N5398-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 56291N5398-E3/54 Datasheet

SimilarRFQ

1N5398G B0G

Taiwan Semiconductor CorporationIn Stock: 10521N5398G B0G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute models for RM 2B are identified based strictly on matching key electrical and mechanical criteria: voltage rating (800 V), average rectified current (≥1.2A), diode recovery speed, reverse leakage current, through-hole mounting, and axial package format. RoHS compliance and moisture sensitivity level are included to verify process compatibility. Substitution is valid only where all specified key parameters are met or exceeded.

Parameter Comparison

Engineering Selection Recommendations

For replacement of the obsolete RM 2B diode rectifier, select only substitute parts that meet the same RoHS compliance and Moisture Sensitivity Level (MSL 1) requirements. Both 1N5398-E3/54 and 1N5398G B0G diodes are ROHS3 Compliant, MSL 1, and Active status in inventory, and their electrical/mechanical parameters are in accordance with those listed for RM 2B in the Diodes, Rectifiers category.

Frequently Asked Questions (FAQ)

Q1: What are the most critical substitution criteria for RM 2B?
Only substitutes with equal or higher voltage rating (800 V), average rectified current (≥1.2A), and standard recovery speed are valid. Package type and mounting method must match (through-hole, axial).

Q2: Are the package and mounting format compatible for all substitutes?
Yes. All listed substitutes feature through-hole mounting and an axial case, consistent with RM 2B's mechanical requirements.

Q3: Is RoHS compliance required for substitution?
Yes. All substitute parts listed are RoHS3 Compliant, matching the environmental compliance of the RM 2B.

Q4: How does the reverse leakage current compare for substitutes?
Both substitute diodes have 5 µA reverse leakage at 800 V, which is within or below the 10 µA parameter of RM 2B.

Q5: Are there any differences in the operating temperature ranges?
Substitute parts meet or exceed the required operating temperature range, supporting at minimum -50°C ~ 150°C and -55°C ~ 150°C.

Q6: How do inventory levels factor into direct replacement?
Higher inventory levels of substitutes such as 1N5398-E3/54 and 1N5398G B0G may facilitate immediate sourcing for ongoing production needs involving the Diodes, Rectifiers category.