RNF14FTD52K3 Equivalent & Substitute Parts

Part Overview

The RNF14FTD52K3 is a 52.3 kOhms ±1% metal film axial through-hole resistor rated at 0.25W (1/4W) manufactured by Stackpole Electronics Inc. This component features flame retardant coating and safety construction, designed for applications requiring precision resistance values in compact form factors. The part is currently active in production with ROHS3 compliance and maintains full stock availability. Substitute parts are identified to address inventory requirements, enhanced performance specifications, or alternative sourcing needs while maintaining electrical and mechanical compatibility.

Substiute Parts

RNF14FTD52K3

Stackpole Electronics IncIn Stock: 773RNF14FTD52K3 Datasheet

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CMF5552K300FHEB

Vishay DaleIn Stock: 2077CMF5552K300FHEB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The CMF5552K300FHEB qualifies as a direct substitute based on the following critical parameters:

Resistance value and tolerance remain identical at 52.3 kOhms ±1%, ensuring electrical equivalence in circuit applications. Both components utilize metal film construction with axial package configuration, maintaining mechanical compatibility with existing PCB layouts and through-hole assembly processes. The substitute part meets or exceeds the original specification in power rating (0.5W versus 0.25W), temperature coefficient performance (±50ppm/°C versus ±100ppm/°C), and maximum operating temperature (175°C versus 155°C). Both parts maintain ROHS3 compliance and identical termination count (2). Physical dimensions remain comparable within acceptable assembly tolerances.

Parameter Comparison

Engineering Selection Recommendations

The CMF5552K300FHEB substitute part is electrically and mechanically compatible with the RNF14FTD52K3 for direct replacement in circuit applications. Both components maintain active product status and full ROHS3 compliance. The substitute offers enhanced specifications including doubled power dissipation capability (0.5W versus 0.25W), improved temperature coefficient stability (±50ppm/°C versus ±100ppm/°C), and extended maximum operating temperature (175°C versus 155°C). The addition of moisture-resistant properties in the substitute part provides supplementary environmental protection. Physical dimensions are comparable with negligible variation. Selection between these parts should be based on application-specific thermal requirements, environmental exposure conditions, and inventory availability rather than electrical performance, as both components deliver identical resistance and tolerance specifications.

Frequently Asked Questions (FAQ)

Q: Can CMF5552K300FHEB replace RNF14FTD52K3 in existing designs?

A: Yes. Both components share identical resistance value (52.3 kOhms) and tolerance (±1%), metal film construction, axial package configuration, and two-terminal design. Physical dimensions are comparable. The substitute part meets or exceeds all electrical specifications of the original component.

Q: What are the key differences between these parts?

A: The primary differences are power rating (0.5W substitute versus 0.25W original), temperature coefficient (±50ppm/°C substitute versus ±100ppm/°C original), maximum operating temperature (175°C substitute versus 155°C original), and additional moisture-resistant feature in the substitute. The substitute provides enhanced performance across these parameters.

Q: Are there packaging differences?

A: The main part is supplied in Tape & Reel (TR) packaging, while the substitute is supplied in Cut Tape (CT) packaging. Both maintain axial through-hole configuration suitable for identical assembly processes. Packaging format does not affect electrical or mechanical compatibility.

Q: Do both parts meet compliance requirements?

A: Yes. Both RNF14FTD52K3 and CMF5552K300FHEB are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Both components meet identical regulatory and environmental standards.

Q: Which part should be selected for high-temperature applications?

A: The CMF5552K300FHEB is suitable for applications requiring operation up to 175°C, compared to the RNF14FTD52K3 maximum of 155°C. For applications within the 155°C limit, both parts are functionally equivalent.