RNF14FTC147K Equivalent & Substitute Parts

Part Overview

The RNF14FTC147K is a 147 kOhms ±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, design flexibility, or supply chain optimization.

Substiute Parts

RNF14FTC147K

Stackpole Electronics IncIn Stock: 793RNF14FTC147K Datasheet

Current PartRFQ

CMF55147K00FHEB

Vishay DaleIn Stock: 2107CMF55147K00FHEB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RNF14FTC147K is determined by the following critical parameters:

Electrical Equivalence Requirements:

• Resistance value: 147 kOhms (exact match)
• Tolerance: ±1% (exact match)
• Temperature coefficient: ±50ppm/°C (exact match)
• Composition: Metal Film (exact match)

Mechanical Compatibility Requirements:

• Package type: Axial (exact match)
• Number of terminations: 2 (exact match)

Compliance & Safety Requirements:

• RoHS Status: ROHS3 Compliant (minimum requirement)
• Flame Retardant Coating: Required for safety applications

Power Rating Consideration: Substitute parts may have equal or higher power ratings. The RNF14FTC147K operates at 0.25W; substitute parts rated at 0.5W or higher maintain backward compatibility in circuits designed for the original specification.

Parameter Comparison

Engineering Selection Recommendations

The CMF55147K00FHEB qualifies as a direct substitute for the RNF14FTC147K based on matched electrical parameters (147 kOhms ±1%, ±50ppm/°C metal film composition) and mechanical compatibility (axial package, 2 terminations). Both components maintain ROHS3 compliance and flame retardant safety features required for regulated applications.

The CMF55147K00FHEB provides enhanced specifications including higher power rating (0.5W vs. 0.25W), extended operating temperature range (-55°C ~ 175°C vs. -55°C ~ 155°C), and moisture resistance. These characteristics ensure functional compatibility in circuits originally designed for the RNF14FTC147K while offering improved thermal performance and environmental protection.

Physical dimensions are comparable (0.090" Dia x 0.240" L vs. 0.093" Dia x 0.250" L), confirming PCB layout compatibility for standard axial resistor footprints.

Frequently Asked Questions (FAQ)

Q: Can the CMF55147K00FHEB replace the RNF14FTC147K in existing designs?

A: Yes. Both components share identical electrical specifications (147 kOhms ±1%, ±50ppm/°C metal film) and axial package configuration. The substitute part's higher power rating (0.5W) and extended temperature range provide equal or superior performance in the original circuit application.

Q: What are the physical dimension differences between these parts?

A: The RNF14FTC147K measures 0.093" Dia x 0.250" L (2.35mm x 6.35mm). The CMF55147K00FHEB measures 0.090" Dia x 0.240" L (2.29mm x 6.10mm). Both fit standard axial resistor footprints with negligible dimensional variance.

Q: Are both parts RoHS compliant?

A: Yes. Both the RNF14FTC147K and CMF55147K00FHEB are ROHS3 compliant and suitable for regulated applications requiring environmental compliance certification.

Q: Does the higher power rating of the substitute affect circuit performance?

A: No. The CMF55147K00FHEB's 0.5W rating exceeds the original 0.25W specification, ensuring adequate thermal margin in the same circuit application. Power dissipation is determined by circuit current, not component rating.

Q: What is the temperature coefficient significance for substitution?

A: Both parts maintain ±50ppm/°C temperature coefficient, ensuring identical frequency stability and precision performance across the operating temperature range. This parameter is critical for analog and precision circuits.

Q: Are flame retardant and safety features equivalent?

A: Yes. Both components feature flame retardant coating and safety classification. The CMF55147K00FHEB adds moisture resistance, providing enhanced environmental protection without compromising safety compliance.