Equivalent & Substitute Parts for RM 1 – Sanken Electric USA Inc.

Part Overview

The RM 1, manufactured by Sanken Electric USA Inc., is categorized under Diodes, Rectifiers. It features a general-purpose diode with a voltage rating of 400 V and a current rating of 1A in an axial through-hole package. RM 1 is now listed as obsolete, making it necessary to identify equivalent and substitute models to maintain compatibility and availability for ongoing and new designs. Substituting parts is essential due to the RM 1’s product status and the need for continued support in manufacturing and repair applications.

Substiute Parts

RM 1

Sanken Electric USA Inc.In Stock: 970RM 1 Datasheet

Current PartRFQ

1N4004G-T

Diodes IncorporatedIn Stock: 237771N4004G-T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Equivalent and substitute part selection for RM 1 is strictly determined by the following electrical and mechanical parameters: Voltage - DC Reverse (Vr), Current - Average Rectified (Io), Voltage - Forward (Vf) (Max) @ If, Speed (Recovery), Current - Reverse Leakage @ Vr, Mounting Type, Package / Case, Operating Temperature - Junction, RoHS status, Moisture Sensitivity Level (MSL), ECCN, and HTSUS. Only parts matching these criteria are considered suitable substitutes in the Diodes, Rectifiers category.

Parameter Comparison

Engineering Selection Recommendations

RM 1 is obsolete, while substitute part 1N4004G-T maintains active status. Both parts are compliant with RoHS and have a Moisture Sensitivity Level of 1 (Unlimited), enabling direct substitution within manufacturing and assembly processes. ECCN and HTSUS designations are identical between the original and replacement parts and fulfill regulatory compliance requirements.

Frequently Asked Questions (FAQ)

Q1: What are the primary criteria when substituting the RM 1 diode?
A1: Substitution requires matching voltage rating (400 V), current rating (1A), recovery speed, reverse leakage, mounting type, package, operating temperature, RoHS compliance, and regulatory codes.

Q2: Is the package type of 1N4004G-T compatible with RM 1?
A2: Both RM 1 (Axial) and 1N4004G-T (DO-41, Axial) are through-hole mounted axial diodes, suitable for most standard PCB layouts supporting axial packages.

Q3: Does the slight difference in forward voltage (Vf) affect substitution?
A3: 1N4004G-T specifies a maximum forward voltage of 1 V @ 1 A compared to RM 1’s 950 mV @ 1 A. This is within standard tolerances for substitution in this product category.

Q4: Are there differences in operating temperature range between RM 1 and its substitute?
A4: 1N4004G-T offers a wider operating junction temperature range (-65°C ~ 175°C) compared to RM 1 (-40°C ~ 150°C), allowing use in equivalent and broader environmental conditions.

Q5: Is the RoHS compliance status maintained in the substitute part?
A5: Both RM 1 and 1N4004G-T are RoHS compliant, supporting environmentally regulated applications.

Q6: Does either part require special handling regarding moisture sensitivity?
A6: Both devices have Moisture Sensitivity Level (MSL) 1 (Unlimited), requiring no additional handling precautions for moisture sensitivity.