Recom Power RSS-243.3 Equivalent & Substitute Parts Reference

Part Overview

The Recom Power RSS-243.3 is an isolated module DC-DC converter providing a single 3.3V output from an input voltage range of 21.6V to 26.4V, with a maximum output current of 303mA and 1W power capacity. This product is classified as obsolete. Due to its discontinued status, it is essential to identify compatible substitute parts that meet the necessary electrical, mechanical, and compliance requirements for seamless integration in existing designs or for maintenance purposes.

Substiute Parts

RSS-243.3

Recom PowerIn Stock: 1021RSS-243.3 Datasheet

Current PartRFQ

R1S-243.3

Recom PowerIn Stock: 769R1S-243.3 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute part selection is based strictly on alignment with the following parameters:

• Manufacturer
• DC-DC Converter category
• Input voltage range (21.6V to 26.4V)
• Output voltage (3.3V)
• Maximum output current (303mA)
• Power rating (1 W)
• Isolation voltage (1 kV)
• Application (ITE, Commercial)
• Surface mount package compatibility
• Pin and case configuration
• Regulatory compliance (RoHS, REACH, ECCN)
• Moisture Sensitivity Level (MSL)

Only parts meeting all these key criteria are included as substitutes.

Parameter Comparison

Engineering Selection Recommendations

• RSS-243.3 is discontinued (Obsolete status).
• R1S-243.3 from Recom Power is classified as Active and provides identical electrical performance parameters.
• Both models have ROHS3 compliance and are REACH unaffected.
• Both parts share the same mounting type and pin/case configuration, with minor dimensional differences.
• The substitute part R1S-243.3 meets all required certifications including ECCN and HTSUS.

Frequently Asked Questions (FAQ)

Q1: What are the essential parameters to consider when substituting RSS-243.3 with R1S-243.3?
A1: The key electrical parameters—input voltage range, output voltage and current, power rating, and isolation voltage—are identical. Both parts support the same application category and mounting type.

Q2: Are the package and pin configurations compatible between RSS-243.3 and R1S-243.3?
A2: Both use the 8-SMD Module with 5 leads, suitable for surface mount applications. Verify layout tolerance for minor dimensional differences.

Q3: What regulatory compliances do both parts meet?
A3: Both are ROHS3 compliant, REACH unaffected, with MSL 1 rating, ECCN EAR99, and HTSUS 8504.40.9580.

Q4: Can R1S-243.3 be directly used in commercial ITE applications as a substitute?
A4: Both RSS-243.3 and R1S-243.3 are specified for ITE (Commercial) applications.

Q5: Does the operating temperature range differ significantly?
A5: R1S-243.3 offers an extended temperature range (-40°C ~ 100°C) versus RSS-243.3 (-40°C ~ 85°C), which is compatible or exceeds the original specification.