RNF14FTC174R Equivalent & Substitute Parts

Part Overview

The RNF14FTC174R is a 174 Ohm ±1% metal film through-hole resistor rated at 0.25W (1/4W) in axial package configuration, manufactured by Stackpole Electronics Inc. This component is classified as Active product status with ROHS3 compliance and flame retardant coating for safety applications. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are required due to inventory constraints, supply chain considerations, or design optimization needs.

Substiute Parts

RNF14FTC174R

Stackpole Electronics IncIn Stock: 984RNF14FTC174R Datasheet

Current PartRFQ

CMF55174R00FHEB

Vishay DaleIn Stock: 4351CMF55174R00FHEB Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RNF14FTC174R is determined by the following critical parameters:

Resistance value must be 174 Ohms with ±1% tolerance to maintain circuit design specifications. Composition must be metal film to preserve frequency response and noise characteristics. Package configuration must remain axial for mechanical compatibility with through-hole PCB layouts. Temperature coefficient of ±50ppm/°C ensures thermal stability within design margins. RoHS3 compliance and flame retardant coating are mandatory for regulatory and safety requirements.

The CMF55174R00FHEB from Vishay Dale meets all substitution criteria. While this part features a higher power rating of 0.5W (1/2W) compared to the original 0.25W specification, this represents an upgrade that maintains full backward compatibility. The extended operating temperature range (-55°C ~ 175°C) and moisture-resistant properties provide additional performance margin without compromising circuit function.

Parameter Comparison

Engineering Selection Recommendations

Both the RNF14FTC174R and CMF55174R00FHEB maintain Active product status with full ROHS3 compliance and REACH unaffected classification. The CMF55174R00FHEB is suitable for direct substitution in applications where the original 0.25W power rating is specified, as the higher 0.5W rating provides additional thermal margin without altering electrical performance. Both components carry identical resistance, tolerance, and temperature coefficient specifications. The extended operating temperature range of the CMF55174R00FHEB (-55°C ~ 175°C versus -55°C ~ 155°C) offers enhanced reliability in elevated temperature environments. Axial package geometry remains consistent between both parts, ensuring mechanical compatibility with existing PCB layouts and through-hole assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the CMF55174R00FHEB replace the RNF14FTC174R in all applications?

A: Yes. The CMF55174R00FHEB meets all electrical specifications of the RNF14FTC174R with identical resistance, tolerance, and temperature coefficient. The higher power rating represents an upgrade that maintains full backward compatibility. Axial package configuration is identical, ensuring mechanical fit in through-hole designs.

Q: What is the significance of the higher 0.5W power rating on the substitute part?

A: The CMF55174R00FHEB's 0.5W rating provides additional thermal dissipation capacity compared to the original 0.25W specification. This upgrade does not affect circuit operation and allows the component to operate with greater thermal margin in power-dissipating applications.

Q: Are there packaging differences between these parts?

A: The RNF14FTC174R is supplied in Tape & Reel (TR) packaging, while the CMF55174R00FHEB is supplied in Cut Tape (CT) packaging. Both maintain identical axial through-hole package geometry. Packaging format differences relate to supply and handling methods, not component form factor or PCB compatibility.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the RNF14FTC174R and CMF55174R00FHEB are ROHS3 compliant, REACH unaffected, and carry identical ECCN and HTSUS classifications. Both feature flame retardant coating and safety designation suitable for regulated applications.

Q: What is the temperature coefficient significance for substitution?

A: Both parts maintain ±50ppm/°C temperature coefficient, ensuring identical thermal stability and drift characteristics across the operating temperature range. This parameter match is critical for precision circuit applications where resistance stability is required.