RSS-1209/P Equivalent & Substitute Parts Reference

Part Overview

The RSS-1209/P by Recom Power is an isolated DC DC converter module, providing a single 9V output at up to 111mA from a 10.8V to 13.2V input. Its maximum output power rating is 1W, and it supports applications in ITE (Commercial) sectors. This product is classified as obsolete, requiring engineers to identify compatible substitute parts for ongoing designs, repairs, and inventory fulfillment.

Key Parameters

Parameter	Main Part Value
Voltage - Input (Min)	10.8V
Voltage - Input (Max)	13.2V
Voltage - Output 1	9V
Current - Output (Max)	111mA
Power (Watts)	1 W
Voltage - Isolation	1 kV
Mounting Type	Surface Mount
Package / Case	8-SMD Module, 5 Leads
Size / Dimension	0.50" L x 0.32" W x 0.29" H (12.8mm x 8.2mm x 7.3mm)
Operating Temperature	-40°C ~ 85°C
Efficiency	78%
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected
ECCN	EAR99

Substitute Part Grouping Explanation

Suitable substitute parts are determined strictly according to the following matching parameters:

Input voltage range
Output voltage and current
Maximum output power
Isolation voltage
Mounting type and package/case
RoHS status, REACH status, MSL, ECCN
Functional and dimensional equivalency

Only parts with direct equivalence in these electrical, mechanical, and compliance parameters qualify for substitution in this category.

Parameter Comparison

Parameter	RSS-1209/P	R1S-1209/P
Voltage - Input (Min)	10.8V	10.8V
Voltage - Input (Max)	13.2V	13.2V
Voltage - Output 1	9V	9V
Current - Output (Max)	111mA	111mA
Power (Watts)	1 W	1 W
Voltage - Isolation	1 kV	1 kV
Mounting Type	Surface Mount	Surface Mount
Package / Case	8-SMD Module, 5 Leads	8-SMD Module, 5 Leads
Size / Dimension	0.50" L x 0.32" W x 0.29" H (12.8mm x 8.2mm x 7.3mm)	0.50" L x 0.42" W x 0.28" H (12.8mm x 10.7mm x 7.0mm)
Operating Temperature	-40°C ~ 85°C	-40°C ~ 100°C
Efficiency	78%	78%
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99

Engineering Selection Recommendations

The RSS-1209/P is classified as obsolete. The R1S-1209/P is active in production, shares all essential functional, electrical, and compliance attributes, and meets ROHS3 and REACH requirements. Both parts are rated Moisture Sensitivity Level 1 (Unlimited) for streamlined handling and storage. Component selection can be based on ECCN, HTSUS, and package matching using the provided comparison. Mechanical dimensions and packaging differences must be verified through explicit values as presented.

Frequently Asked Questions (FAQ)

Q1: Which parameters must match for substitution within isolated DC DC converter modules?
A1: Input voltage range, output voltage/current, output power, voltage isolation rating, mounting type, package/case, RoHS status, REACH status, and MSL.

Q2: Is R1S-1209/P directly interchangeable with RSS-1209/P for surface mount applications?
A2: Both parts share the same surface mount type and 8-SMD Module, 5 Leads package but have dimensional differences. Mechanical footprint must be verified according to the provided size/dimension.

Q3: Are product status or compliance certifications a factor in substitution?
A3: Yes. RSS-1209/P is obsolete, while R1S-1209/P is active, and both maintain ROHS3 compliance, REACH unchanged, and MSL 1 (Unlimited).

Q4: What differences exist in operating temperature ranges?
A4: RSS-1209/P supports -40°C to 85°C, while R1S-1209/P supports -40°C to 100°C. Selection should consider the required operating environment.

Q5: Are there any differences in packaging or inventory handling between RSS-1209/P and R1S-1209/P?
A5: RSS-1209/P does not specify packaging; R1S-1209/P specifies tube packaging. Inventory status and packaging format must be confirmed using provided inventory information.

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