RNF14FTC26K7 Equivalent & Substitute Parts

Part Overview

The RNF14FTC26K7 is a 26.7 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-grade construction, designed for applications requiring precision resistance values with tight tolerance specifications. The part is currently in active production status with 1170 units available in stock. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter ranges for this resistor category.

Substiute Parts

RNF14FTC26K7

Stackpole Electronics IncIn Stock: 1215RNF14FTC26K7 Datasheet

Current PartRFQ

CMF5526K700FHEB

Vishay DaleIn Stock: 3132CMF5526K700FHEB Datasheet

UpgradeRFQ

CMF5026K700FHEB

Vishay DaleIn Stock: 2200CMF5026K700FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF14FTC26K7 are qualified based on the following electrical and mechanical parameters:

• Identical resistance value: 26.7 kOhms
• Identical tolerance: ±1%
• Identical composition: Metal Film
• Identical temperature coefficient: ±50ppm/°C
• Identical package type: Axial through-hole
• Equal or higher power rating: 0.25W minimum
• Equal or extended operating temperature range: -55°C minimum to 155°C maximum
• Equivalent or superior safety features: Flame retardant coating
• Compliance with RoHS3 and REACH requirements

Two substitute parts meet these criteria with variations in power rating and physical dimensions. The CMF5026K700FHEB maintains identical power rating (0.25W) with enhanced thermal performance. The CMF5526K700FHEB provides increased power dissipation capability (0.5W) for applications requiring additional thermal margin.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts maintain full electrical equivalence to the RNF14FTC26K7 while offering enhanced specifications. Selection between substitutes depends on application requirements:

The CMF5026K700FHEB (MFR Recommended) provides direct functional replacement with identical power rating and maintains the same electrical performance envelope. This part features a smaller physical footprint (0.065" diameter vs. 0.093" diameter) and extended operating temperature range to 175°C. Moisture-resistant construction provides additional environmental protection. This option is suitable for space-constrained applications or designs requiring enhanced thermal stability.

The CMF5526K700FHEB (Upgrade) doubles the power dissipation capability to 0.5W while maintaining all other electrical parameters. Extended operating temperature range to 175°C and moisture-resistant features are included. Physical dimensions remain comparable to the main part (0.090" diameter). This option is appropriate for applications with higher power dissipation requirements or designs benefiting from increased thermal margin.

All three parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory compatibility across manufacturing jurisdictions.

Frequently Asked Questions (FAQ)

Q: Can CMF5026K700FHEB be used as a direct replacement for RNF14FTC26K7?

A: Yes. Both parts share identical electrical specifications: 26.7 kOhms resistance, ±1% tolerance, ±50ppm/°C temperature coefficient, and 0.25W power rating. The CMF5026K700FHEB features a smaller axial package (0.065" diameter vs. 0.093" diameter) and extended operating temperature range (-55°C to 175°C vs. -55°C to 155°C). PCB layout modifications may be required due to dimensional differences.

Q: What is the difference between the two substitute parts?

A: The primary difference is power rating. CMF5026K700FHEB maintains 0.25W rating identical to the main part, while CMF5526K700FHEB provides 0.5W rating. Both substitute parts offer moisture-resistant construction and extended temperature range. Physical dimensions differ slightly: CMF5026K700FHEB is smallest (0.065" diameter), CMF5526K700FHEB is intermediate (0.090" diameter), and RNF14FTC26K7 is largest (0.093" diameter).

Q: Are dimensional changes critical for PCB compatibility?

A: Dimensional changes affect PCB layout and mechanical fit. The CMF5026K700FHEB smaller footprint may require PCB trace repositioning. The CMF5526K700FHEB maintains similar dimensions to the original part. Verify PCB hole spacing and component clearances before design implementation.

Q: Do all parts meet the same compliance requirements?

A: Yes. All three parts are ROHS3 compliant and REACH unaffected. Regulatory compliance is maintained across all substitution options.

Q: Which substitute should be selected for thermal-sensitive applications?

A: The CMF5026K700FHEB and CMF5526K700FHEB both extend operating temperature range to 175°C compared to the RNF14FTC26K7 maximum of 155°C. For applications requiring maximum thermal margin, the CMF5526K700FHEB 0.5W rating provides additional power dissipation capacity.