RM 4 Equivalent & Substitute Parts Reference Page

Part Overview

The Sanken Electric USA Inc. RM 4 is classified in the Diodes, Rectifiers category, specifically as a general purpose diode rated for 400 V reverse voltage and 3 A average rectified current, in a through hole axial package. The product is marked as obsolete. Selecting alternative models with matching critical parameters is necessary for maintaining supply continuity, design compatibility, and ensuring compliance with electrical and mechanical requirements.

Substiute Parts

RM 4

Sanken Electric USA Inc.In Stock: 1198RM 4 Datasheet

Current PartRFQ

1N5404-G

Comchip TechnologyIn Stock: 2089711N5404-G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for obsolete RM 4 diodes must strictly match the following key parameters: Diodes, Rectifiers category; maximum reverse voltage of 400 V; average rectified current of 3A; maximum forward voltage of 950 mV @ 3 A; standard recovery speed; reverse leakage current not exceeding main parameter tolerance; through hole mounting with an axial form factor; supplier device package must be compatible in axial configuration; RoHS compliance and identical ECCN/HTSUS codes must be verified.

Parameter Comparison

Engineering Selection Recommendations

The RM 4 part status is obsolete. When selecting a substitute, verify the substitute's product is active, matches RoHS status, and maintains identical ECCN and HTSUS compliance standards. Moisture Sensitivity Level (MSL) must be 1 (Unlimited), ensuring suitability for standard handling and storage practices. Product category, voltage rating, current rating, and mounting type must match exactly to maintain compatibility.

Frequently Asked Questions (FAQ)

Q1: What are the minimum required parameters for substituting RM 4?
A1: Substitute diodes must match 400 V reverse voltage, 3A average rectified current, 950 mV maximum forward voltage at 3 A, standard recovery speed, compatible axial through hole mounting, and compliance with RoHS and ECCN.

Q2: Is the packaging of the substitute part (DO-201AD, DO-27) compatible with axial format?
A2: DO-201AD and DO-27 refer to axial packages suitable for through hole mounting in place of the RM 4 axial part.

Q3: Does the difference in reverse leakage current affect substitution?
A3: The substitute 1N5404-G presents ≤5 µA @ 400 V, which satisfies compatibility with the RM 4's 10 µA @ 400 V.

Q4: Are there any compliance concerns with the substitute part?
A4: Both RM 4 and 1N5404-G are RoHS compliant and share ECCN EAR99 and HTSUS 8541.10.0080.

Q5: How is operating temperature considered for substitution?
A5: Substitute operating temperature range is provided; ensure suitability per application requirements within the stated limits to maintain compatibility.