RC1005F54R9CS Equivalent & Substitute Parts

Part Overview

The RC1005F54R9CS is a 54.9 Ohm ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0402 (1005 Metric) package format. This surface mount device is rated at 0.063W (1/16W) power dissipation with moisture resistant construction and operates across the temperature range of -55°C to 155°C. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). Equivalent and substitute parts are identified to support component sourcing flexibility, inventory management, and design continuity across multiple manufacturers.

Substiute Parts

RC1005F54R9CS

Samsung Electro-MechanicsIn Stock: 813RC1005F54R9CS Datasheet

Current PartRFQ

CR0402-FX-54R9GLF

Bourns Inc.In Stock: 20932CR0402-FX-54R9GLF Datasheet

DirectRFQ

RC0402FR-0754R9L

YAGEOIn Stock: 797026RC0402FR-0754R9L Datasheet

DirectRFQ

ERJ-2RKF54R9X

Panasonic Electronic ComponentsIn Stock: 270149ERJ-2RKF54R9X Datasheet

UpgradeRFQ

CRCW040254R9FKED

Vishay DaleIn Stock: 44314CRCW040254R9FKED Datasheet

SimilarRFQ

RMCF0402FT54R9

Stackpole Electronics IncIn Stock: 19112RMCF0402FT54R9 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC1005F54R9CS is determined by strict equivalence across the following critical parameters: resistance value (54.9 Ohms), tolerance (±1%), package format (0402 / 1005 Metric), composition (thick film), temperature coefficient (±100ppm/°C), operating temperature range (-55°C ~ 155°C), and compliance certifications (ROHS3, REACH Unaffected, EAR99).

Substitute parts are categorized into three groups based on electrical and mechanical compatibility:

Direct Equivalents maintain identical power ratings (0.063W / 1/16W) and feature sets with the main part.

Upgrade Substitutes provide higher power ratings (0.1W / 1/10W) while maintaining all other critical parameters, enabling use in applications requiring enhanced thermal performance.

Similar Substitutes maintain identical electrical specifications and package format but include automotive-grade certifications (AEC-Q200) for applications requiring enhanced reliability qualification.

All substitute parts share identical physical dimensions (0.039" L x 0.020" W / 1.00mm x 0.50mm), maximum seated height (0.016" / 0.40mm), and compliance profiles with the main part.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents (CR0402-FX-54R9GLF, RC0402FR-0754R9L) are suitable for applications requiring identical electrical and thermal performance to the RC1005F54R9CS. Both parts maintain active production status, ROHS3 compliance, and unlimited moisture sensitivity level. The RC0402FR-0754R9L from YAGEO offers the highest inventory availability (797,004 units) and includes moisture resistant construction matching the original part specification.

Upgrade Substitute (ERJ-2RKF54R9X) from Panasonic provides enhanced power rating (0.1W versus 0.063W) while maintaining all other critical parameters. This part is suitable for applications where thermal margin improvement is beneficial. The automotive AEC-Q200 qualification provides additional reliability assurance. This option is appropriate when design specifications permit higher power ratings without circuit modification.

Similar Substitutes (CRCW040254R9FKED, RMCF0402FT54R9) maintain identical electrical specifications and power ratings to the main part while incorporating automotive-grade AEC-Q200 certification. These parts are suitable for applications requiring automotive-qualified components or enhanced reliability qualification. Both parts are in active production with ROHS3 compliance.

All substitute parts share identical package dimensions, termination count, temperature coefficient, and operating temperature range with the RC1005F54R9CS, ensuring mechanical and thermal compatibility in existing circuit designs.

Frequently Asked Questions (FAQ)

Q: Can CR0402-FX-54R9GLF be used as a direct replacement for RC1005F54R9CS?

A: Yes. Both parts share identical resistance (54.9 Ohms), tolerance (±1%), power rating (0.063W), package format (0402), composition (thick film), temperature coefficient (±100ppm/°C), operating temperature range (-55°C ~ 155°C), and compliance certifications (ROHS3, REACH Unaffected). Physical dimensions and termination configuration are identical.

Q: What is the difference between the main part and RC0402FR-0754R9L?

A: The RC0402FR-0754R9L from YAGEO is electrically and mechanically identical to the RC1005F54R9CS. Both include moisture resistant construction and maintain the same power rating, tolerance, and operating specifications. The primary difference is manufacturer and part numbering convention.

Q: Can ERJ-2RKF54R9X be substituted in place of RC1005F54R9CS?

A: Yes, with the following consideration: ERJ-2RKF54R9X provides a higher power rating (0.1W versus 0.063W). All other electrical parameters—resistance, tolerance, temperature coefficient, and operating temperature range—are identical. The higher power rating does not create compatibility issues in circuits designed for the 0.063W part, as the component can dissipate more thermal energy. The automotive AEC-Q200 qualification is an additional feature not present in the main part.

Q: Are CRCW040254R9FKED and RMCF0402FT54R9 suitable for non-automotive applications?

A: Yes. Both parts maintain identical electrical specifications and power ratings to the RC1005F54R9CS. The automotive AEC-Q200 certification represents an additional qualification level and does not restrict use in non-automotive applications. These parts are fully compatible with the original design.

Q: What is the significance of MSL 1 (Unlimited) moisture sensitivity level?

A: MSL 1 indicates unlimited shelf life and no moisture bake-out requirement prior to soldering. All listed parts, including the main part and substitutes, carry MSL 1 rating, ensuring consistent handling and storage procedures across all options.

Q: Do all substitute parts have the same physical dimensions as RC1005F54R9CS?

A: Yes. All substitute parts maintain identical package format (0402 / 1005 Metric), length (0.039" / 1.00mm), width (0.020" / 0.50mm), and maximum seated height (0.016" / 0.40mm). Physical compatibility with existing PCB layouts and pick-and-place equipment is maintained across all options.

Q: Which substitute part offers the highest inventory availability?

A: RC0402FR-0754R9L from YAGEO provides the highest inventory availability at 797,004 units in stock, followed by ERJ-2RKF54R9X from Panasonic at 270,118 units.