RSS-2409 DC DC Converter 9V 1W Equivalent & Substitute Parts

Part Overview

The RSS-2409 is an isolated module DC DC converter manufactured by Recom Power, designed to convert input voltages in the 21.6V to 26.4V range to a regulated 9V output at 111mA maximum current. This 1W converter is classified as obsolete, which necessitates identification of active equivalent parts for continued system support and procurement. The part is suitable for ITE (Commercial) applications and features short-circuit protection (SCP) with 1 kV isolation.

Substiute Parts

RSS-2409

Recom PowerIn Stock: 1062RSS-2409 Datasheet

Current PartRFQ

R1S-2409

Recom PowerIn Stock: 775R1S-2409 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The R1S-2409 qualifies as a direct substitute for the RSS-2409 based on the following critical electrical and mechanical parameters:

Electrical Compatibility:

• Identical input voltage range: 21.6V – 26.4V
• Identical output voltage: 9V
• Identical maximum output current: 111mA
• Identical power rating: 1W
• Identical isolation voltage: 1 kV
• Identical efficiency: 78%
• Identical short-circuit protection feature

Mechanical Compatibility:

• Identical mounting type: Surface Mount
• Identical package configuration: 8-SMD Module, 5 Leads
• Compatible physical dimensions within tolerance for PCB layout

Regulatory & Compliance Alignment:

• Both parts are ROHS3 compliant
• Both parts are REACH unaffected
• Both parts share identical ECCN and HTSUS classifications

The R1S-2409 represents the active production equivalent within the Recom Power ECONOLINE series, transitioning from the obsolete RSS series to the current R1S series.

Parameter Comparison

Engineering Selection Recommendations

The R1S-2409 is the appropriate substitute for the obsolete RSS-2409 in all applications where the RSS-2409 was previously specified. Selection is based on the following engineering criteria:

Electrical Equivalence: All critical electrical parameters—input voltage range, output voltage, output current capacity, power rating, isolation voltage, and efficiency—are identical between the two parts. This ensures functional interchangeability without circuit redesign.

Mechanical Compatibility: Both parts utilize identical surface mount packaging (8-SMD Module, 5 Leads) with compatible pinout and lead configuration, enabling direct PCB layout substitution.

Regulatory Compliance: The R1S-2409 maintains full ROHS3 compliance and REACH unaffected status, matching the environmental and regulatory requirements of the original part.

Product Status Advantage: The R1S-2409 is in active production status, ensuring long-term availability and supply chain continuity. The RSS-2409 obsolete status creates procurement risk and supply uncertainty.

Extended Operating Temperature: The R1S-2409 offers an extended upper operating temperature limit of 100°C compared to the RSS-2409 limit of 85°C, providing improved thermal margin for demanding applications.

Frequently Asked Questions (FAQ)

Q: Can the R1S-2409 be used as a direct replacement for the RSS-2409 without circuit modifications?

A: Yes. The R1S-2409 is electrically and mechanically equivalent to the RSS-2409. All critical parameters—input voltage range (21.6V–26.4V), output voltage (9V), output current (111mA), power rating (1W), isolation voltage (1 kV), and package configuration (8-SMD Module, 5 Leads)—are identical. No circuit redesign is required.

Q: What is the difference in physical dimensions between these parts?

A: The RSS-2409 measures 0.50" L × 0.32" W × 0.29" H (12.8mm × 8.2mm × 7.3mm). The R1S-2409 measures 0.50" L × 0.42" W × 0.28" H (12.8mm × 10.7mm × 7.0mm). The length and height are essentially identical; the width differs by 0.1" (2.5mm). PCB layout verification is recommended to confirm clearance in space-constrained applications.

Q: Are there any compliance or certification differences between the two parts?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and share identical ECCN (EAR99) and HTSUS (8504.40.9580) classifications. Regulatory and compliance requirements are fully satisfied by the R1S-2409.

Q: What is the advantage of the R1S-2409 over the RSS-2409?

A: The R1S-2409 is in active production status, ensuring reliable long-term availability and supply chain support. The RSS-2409 is obsolete, creating procurement challenges and supply discontinuation risk. Additionally, the R1S-2409 supports an extended operating temperature range up to 100°C, compared to 85°C for the RSS-2409.

Q: Is the R1S-2409 available in the same packaging format as the RSS-2409?

A: Both parts use identical 8-SMD Module, 5 Leads surface mount packaging. The R1S-2409 is supplied in tube packaging, while the RSS-2409 was supplied in standard packaging. The functional package configuration and pinout are identical.

Q: What is the moisture sensitivity level for the R1S-2409?

A: The R1S-2409 has a Moisture Sensitivity Level (MSL) of 1 (Unlimited), identical to the RSS-2409. This indicates minimal moisture sensitivity and no special storage or handling requirements.