RNF14FTC147R Equivalent & Substitute Parts

Part Overview

The RNF14FTC147R is a 147 Ohm ±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-grade construction, designed for applications requiring precision resistance with reliable thermal performance across industrial temperature ranges. The part maintains Active product status with full RoHS3 compliance. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are required due to inventory constraints, design flexibility, or application-specific performance enhancements.

Substiute Parts

RNF14FTC147R

Stackpole Electronics IncIn Stock: 788RNF14FTC147R Datasheet

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CMF55147R00FHEB

Vishay DaleIn Stock: 967CMF55147R00FHEB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The CMF55147R00FHEB from Vishay Dale qualifies as a substitute based on the following critical parameters:

Electrical equivalence is established through matching resistance value (147 Ohms), tolerance (±1%), composition (metal film), and temperature coefficient (±50ppm/°C). Both components maintain identical electrical performance characteristics within specified operating conditions.

Mechanical compatibility is confirmed through axial package configuration with two terminations, enabling direct board-level substitution without layout modifications.

Compliance alignment includes ROHS3 certification, REACH Unaffected status, and EAR99 ECCN classification for both parts, ensuring regulatory continuity.

The substitute part offers enhanced power rating (0.5W versus 0.25W) and extended maximum operating temperature (175°C versus 155°C), providing design margin without compromising the original specification requirements.

Parameter Comparison

Engineering Selection Recommendations

Both RNF14FTC147R and CMF55147R00FHEB maintain Active product status with full regulatory compliance. Selection between these components is determined by application requirements and availability:

The RNF14FTC147R is the primary specification when the 0.25W power rating and -55°C to 155°C operating range satisfy circuit requirements and when Stackpole Electronics sourcing is preferred.

The CMF55147R00FHEB serves as a direct substitute when enhanced thermal performance is beneficial, offering 0.5W power rating and extended operating temperature to 175°C. The moisture-resistant feature provides additional environmental protection. Slightly reduced physical dimensions (0.090" diameter versus 0.093") remain compatible with standard axial component footprints.

Both parts carry identical electrical specifications (147 Ohms ±1%, ±50ppm/°C temperature coefficient) and meet all compliance requirements (ROHS3, REACH Unaffected, EAR99 ECCN).

Frequently Asked Questions (FAQ)

Q: Can CMF55147R00FHEB replace RNF14FTC147R in existing designs?

A: Yes. Both components share identical resistance (147 Ohms), tolerance (±1%), composition (metal film), temperature coefficient (±50ppm/°C), and axial package configuration. The substitute meets or exceeds all electrical and mechanical requirements of the original specification.

Q: What are the physical dimension differences?

A: RNF14FTC147R measures 0.093" diameter × 0.250" length (2.35mm × 6.35mm). CMF55147R00FHEB measures 0.090" diameter × 0.240" length (2.29mm × 6.10mm). Both dimensions are compatible with standard axial component board layouts and spacing requirements.

Q: Does the higher power rating of CMF55147R00FHEB affect circuit operation?

A: No. The 0.5W rating of CMF55147R00FHEB provides additional thermal margin compared to the 0.25W rating of RNF14FTC147R. If the original design operates within 0.25W dissipation limits, the substitute will perform identically with improved thermal headroom.

Q: Are there temperature range considerations for substitution?

A: The RNF14FTC147R operates from -55°C to 155°C. The CMF55147R00FHEB extends this range to -55°C to 175°C. If the application requires operation above 155°C, only CMF55147R00FHEB is suitable. For applications within -55°C to 155°C, both components are equivalent.

Q: Do both parts meet the same compliance standards?

A: Yes. Both RNF14FTC147R and CMF55147R00FHEB are ROHS3 compliant, REACH Unaffected, and classified as EAR99 for export control purposes.

Q: What is the significance of the moisture-resistant feature in CMF55147R00FHEB?

A: The moisture-resistant coating in CMF55147R00FHEB provides enhanced environmental protection in humid or corrosive conditions. This feature does not affect electrical performance but extends component reliability in challenging operating environments.