CRCW080554R9FKECC Equivalent & Substitute Parts

Part Overview

The CRCW080554R9FKECC is a 54.9 Ohm ±1% 0.125W thick film chip resistor in 0805 (2012 Metric) package manufactured by Vishay Dale. This component is classified as Active product status and is RoHS3 compliant. Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility permits selection from qualified alternatives meeting identical electrical and mechanical specifications.

Substiute Parts

CRCW080554R9FKECC

Vishay DaleIn Stock: 776CRCW080554R9FKECC Datasheet

Current PartRFQ

CR0805-FX-54R9ELF

Bourns Inc.In Stock: 861CR0805-FX-54R9ELF Datasheet

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RMCF0805FT54R9

Stackpole Electronics IncIn Stock: 5112RMCF0805FT54R9 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CRCW080554R9FKECC are qualified based on strict equivalence of the following parameters:

• Resistance value: 54.9 Ohms
• Tolerance: ±1%
• Power rating: 0.125W (1/8W)
• Package: 0805 (2012 Metric)
• Composition: Thick Film
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C ~ 155°C
• RoHS3 compliance
• MSL rating: 1 (Unlimited)

All identified substitute parts meet these core electrical and mechanical requirements. Variations in features (such as moisture resistance or automotive qualification) do not affect functional equivalence for standard applications.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain Active product status and full RoHS3 compliance. Selection between CRCW080554R9FKECC, CR0805-FX-54R9ELF, and RMCF0805FT54R9 is determined by application-specific requirements:

CR0805-FX-54R9ELF includes moisture-resistant construction, suitable for applications requiring enhanced environmental protection. RMCF0805FT54R9 carries AEC-Q200 automotive qualification, appropriate for automotive and high-reliability applications. CRCW080554R9FKECC serves general-purpose applications without specialized environmental or automotive requirements. All parts are electrically and mechanically interchangeable within standard PCB assembly processes.

Frequently Asked Questions (FAQ)

Q: Can RMCF0805FT54R9 be used as a direct replacement for CRCW080554R9FKECC?

A: Yes. Both parts share identical resistance, tolerance, power rating, package dimensions, and operating temperature range. The RMCF0805FT54R9 has a maximum seated height of 0.026" (0.65mm) compared to 0.024" (0.60mm) for the CRCW080554R9FKECC. This 0.002" difference is within standard PCB assembly tolerances and does not affect functionality.

Q: What is the difference between CR0805-FX-54R9ELF and CRCW080554R9FKECC?

A: Both parts are electrically identical with matching resistance, tolerance, power rating, and temperature specifications. CR0805-FX-54R9ELF includes moisture-resistant construction as an additional feature. This feature does not impact standard circuit operation and provides enhanced protection in humid environments.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. CRCW080554R9FKECC, CR0805-FX-54R9ELF, and RMCF0805FT54R9 are all RoHS3 compliant with MSL rating of 1 (Unlimited).

Q: Can these parts be used interchangeably in automotive applications?

A: RMCF0805FT54R9 carries AEC-Q200 automotive qualification. CRCW080554R9FKECC and CR0805-FX-54R9ELF do not carry this certification. For automotive applications requiring AEC-Q200 qualification, RMCF0805FT54R9 is the appropriate selection.

Q: What is the significance of MSL rating 1 for these parts?

A: MSL rating 1 (Unlimited) indicates these components have unlimited shelf life and do not require special moisture control during storage or handling, simplifying inventory management and supply chain logistics.