RSS-2405/P Equivalent & Substitute Parts

Part Overview

The RSS-2405/P 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 5V output at 200mA maximum current. This 1W converter is part of the ECONOLINE RSS series and is classified as obsolete. The product is suitable for ITE (Commercial) applications requiring galvanic isolation at 1 kV.

Due to the obsolete status of the RSS-2405/P, locating equivalent or substitute components is necessary for ongoing production support, maintenance, and new design implementations. The R1S-2405/P represents the active product line successor with compatible electrical specifications.

Key Parameters

Parameter	Value
Input Voltage Range	21.6V to 26.4V
Output Voltage	5V
Output Current (Maximum)	200mA
Power Rating	1W
Isolation Voltage	1 kV
Operating Temperature Range	-40°C to 85°C (RSS-2405/P)
Efficiency	78%
Mounting Type	Surface Mount
Package Type	8-SMD Module, 5 Leads
Isolation Type	Isolated Module
Protection Features	SCP (Short Circuit Protection)

Substitute Part Grouping Explanation

Substitution of the RSS-2405/P with the R1S-2405/P is based on electrical and mechanical parameter equivalence. Both converters share identical specifications for the following critical parameters:

Input voltage range: 21.6V to 26.4V
Output voltage: 5V
Maximum output current: 200mA
Power rating: 1W
Isolation voltage: 1 kV
Mounting type: Surface Mount
Package configuration: 8-SMD Module, 5 Leads
Protection features: SCP
Efficiency: 78%
RoHS3 compliance
MSL rating: 1 (Unlimited)

The R1S-2405/P is the active product successor within the Recom Power ECONOLINE series, offering extended operating temperature capability and current production availability.

Parameter Comparison

Parameter	RSS-2405/P	R1S-2405/P	Compatibility
Manufacturer	Recom Power	Recom Power	Identical
Input Voltage (Min)	21.6V	21.6V	Identical
Input Voltage (Max)	26.4V	26.4V	Identical
Output Voltage	5V	5V	Identical
Output Current (Max)	200mA	200mA	Identical
Power Rating	1W	1W	Identical
Isolation Voltage	1 kV	1 kV	Identical
Operating Temperature	-40°C to 85°C	-40°C to 100°C	R1S-2405/P extends upper limit
Efficiency	78%	78%	Identical
Mounting Type	Surface Mount	Surface Mount	Identical
Package Type	8-SMD Module, 5 Leads	8-SMD Module, 5 Leads	Identical
Physical Dimensions	12.8mm L x 8.2mm W x 7.3mm H	12.8mm L x 10.7mm W x 7.0mm H	Width and height differ slightly
Protection Features	SCP	SCP	Identical
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical
MSL Rating	1 (Unlimited)	1 (Unlimited)	Identical
Product Status	Obsolete	Active	R1S-2405/P is current production

Engineering Selection Recommendations

The R1S-2405/P is the direct substitute for the obsolete RSS-2405/P based on electrical parameter equivalence and compliance certifications. Both components meet ROHS3 requirements and maintain identical isolation, power, and output specifications.

The R1S-2405/P offers the following advantages for new designs and production continuity:

Active product status with current manufacturing support
Extended operating temperature range (-40°C to 100°C versus -40°C to 85°C)
Identical electrical performance and protection features
Equivalent package configuration and mounting methodology
Consistent RoHS3 and regulatory compliance

Physical dimension differences (width: 8.2mm to 10.7mm; height: 7.3mm to 7.0mm) require PCB layout verification to confirm mechanical fit within existing designs. The length dimension remains constant at 12.8mm.

Frequently Asked Questions (FAQ)

Q: Can the R1S-2405/P directly replace the RSS-2405/P in existing designs?

A: Electrical substitution is valid based on identical input/output voltage specifications, current ratings, isolation voltage, and protection features. PCB layout verification is required due to dimensional differences in width and height.

Q: What are the key electrical parameters that define substitution compatibility?

A: Input voltage range (21.6V to 26.4V), output voltage (5V), maximum output current (200mA), power rating (1W), isolation voltage (1 kV), and short circuit protection are the critical parameters. Both parts meet these specifications identically.

Q: Does the R1S-2405/P meet the same regulatory requirements as the RSS-2405/P?

A: Both components are ROHS3 compliant, REACH unaffected, and carry identical ECCN and HTSUS classifications. Regulatory compliance is equivalent.

Q: What is the significance of the extended temperature range in the R1S-2405/P?

A: The R1S-2405/P operates to 100°C maximum versus 85°C for the RSS-2405/P. This provides additional thermal margin for applications operating at elevated ambient temperatures or with higher component density.

Q: Are there packaging differences between these parts?

A: The RSS-2405/P uses standard packaging while the R1S-2405/P is supplied in tube packaging. Both use identical 8-SMD Module, 5-lead package configuration. Physical dimensions differ slightly in width (8.2mm to 10.7mm) and height (7.3mm to 7.0mm).

Q: What is the MSL rating and why is it relevant?

A: Both parts carry MSL 1 (Unlimited) rating, indicating unlimited shelf life without moisture sensitivity concerns. This simplifies inventory management and storage requirements.

Q: Is the 78% efficiency specification identical between both parts?

A: Yes, both the RSS-2405/P and R1S-2405/P maintain 78% efficiency across their operating ranges.

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