RCS2012F54R9CS Equivalent & Substitute Parts

Part Overview

The RCS2012F54R9CS is a 54.9 Ohm ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated at 0.125W (1/8W) power dissipation in 0805 (2012 Metric) surface mount package. The component features anti-sulfur and moisture resistant construction with unlimited moisture sensitivity level (MSL 1). Product status is Active with 1087 pieces currently in stock. Equivalent and substitute parts are identified for applications requiring alternative sourcing, inventory management, or specific feature requirements such as automotive qualification.

Substiute Parts

RCS2012F54R9CS

Samsung Electro-MechanicsIn Stock: 1150RCS2012F54R9CS Datasheet

Current PartRFQ

CRCW080554R9FKEA

Vishay DaleIn Stock: 15573CRCW080554R9FKEA Datasheet

SimilarRFQ

ERJ-6ENF54R9V

Panasonic Electronic ComponentsIn Stock: 45415ERJ-6ENF54R9V Datasheet

SimilarRFQ

RC0805FR-0754R9L

YAGEOIn Stock: 42345RC0805FR-0754R9L Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RCS2012F54R9CS is determined by strict equivalence across the following parameters: resistance value (54.9 Ohms), tolerance (±1%), power rating (0.125W / 1/8W), package type (0805 / 2012 Metric), composition (thick film), temperature coefficient (±100ppm/°C), operating temperature range (-55°C ~ 155°C), and compliance certifications (ROHS3, REACH Unaffected, EAR99).

All identified substitute parts meet these core electrical and mechanical requirements. Substitute parts are grouped by manufacturer and may include additional features such as automotive AEC-Q200 qualification or enhanced moisture resistance, which represent functional enhancements rather than deviations from the base specification.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed are electrically and mechanically equivalent to the RCS2012F54R9CS and are suitable for direct replacement in applications where the core specifications are met.

CRCW080554R9FKEA (Vishay Dale): This substitute includes automotive AEC-Q200 qualification, making it suitable for automotive and high-reliability applications. Seated height is 0.020" (0.50mm), the lowest among all options, which may be advantageous in space-constrained designs. Inventory availability is 15513 pieces.

ERJ-6ENF54R9V (Panasonic): This substitute includes automotive AEC-Q200 qualification and offers the highest inventory availability at 45309 pieces. Seated height is 0.028" (0.70mm). The ERJ-6EN series provides consistent performance across automotive and industrial applications.

RC0805FR-0754R9L (YAGEO): This substitute features moisture resistant construction similar to the main part and offers high inventory availability at 42316 pieces. Seated height is 0.024" (0.60mm). The RC_L series is suitable for general industrial and consumer applications.

Selection among substitutes should be based on application requirements, inventory availability, and any specific certifications or feature requirements. All parts maintain compliance with ROHS3, REACH, and EAR99 classifications.

Frequently Asked Questions (FAQ)

Q: Can CRCW080554R9FKEA replace RCS2012F54R9CS in all applications?

A: Yes. Both parts share identical electrical specifications (54.9 Ohms ±1%, 0.125W, ±100ppm/°C, -55°C ~ 155°C) and package dimensions (0805 / 2012 Metric). The CRCW080554R9FKEA includes additional automotive AEC-Q200 qualification, which does not restrict its use in non-automotive applications. Seated height difference (0.020" vs 0.026") is within typical PCB design tolerances.

Q: What is the difference between anti-sulfur and moisture resistant features?

A: Anti-sulfur construction protects against sulfur contamination in high-sulfur environments. Moisture resistant construction protects against moisture ingress. Both RCS2012F54R9CS and RC0805FR-0754R9L include moisture resistant features. CRCW080554R9FKEA and ERJ-6ENF54R9V do not explicitly list anti-sulfur features but maintain equivalent moisture sensitivity level (MSL 1).

Q: Are there any height restrictions when substituting?

A: Seated height varies slightly among substitutes: RCS2012F54R9CS (0.026"), CRCW080554R9FKEA (0.020"), ERJ-6ENF54R9V (0.028"), RC0805FR-0754R9L (0.024"). These variations are within standard 0805 package tolerances. Verify PCB design clearances if height-critical applications are involved.

Q: Which substitute has the best inventory availability?

A: ERJ-6ENF54R9V (Panasonic) offers the highest inventory at 45309 pieces, followed by RC0805FR-0754R9L (YAGEO) at 42316 pieces, and CRCW080554R9FKEA (Vishay Dale) at 15513 pieces.

Q: Do all substitutes meet the same compliance standards?

A: Yes. All substitute parts are ROHS3 compliant, REACH Unaffected, and classified as EAR99. All maintain MSL 1 (Unlimited) moisture sensitivity level and operate across the identical temperature range (-55°C ~ 155°C).

Q: What is the significance of AEC-Q200 qualification on substitute parts?

A: AEC-Q200 is an automotive industry standard for passive components. CRCW080554R9FKEA and ERJ-6ENF54R9V include this qualification, indicating enhanced reliability testing and suitability for automotive applications. This qualification does not restrict use in non-automotive applications.