RNF14FTC274R Equivalent & Substitute Parts

Part Overview

The RNF14FTC274R is a 274 Ohms ±1% 0.25W axial through-hole resistor manufactured by Stackpole Electronics Inc. This metal film resistor features flame retardant coating and safety construction, designed for applications requiring precision resistance values with tight tolerance specifications. The part maintains Active product status with 721 units in current inventory. Substitute parts are identified to address supply availability, packaging preferences, or enhanced performance characteristics while maintaining electrical and mechanical compatibility within specified parameters.

Substiute Parts

RNF14FTC274R

Stackpole Electronics IncIn Stock: 745RNF14FTC274R Datasheet

Current PartRFQ

CMF55274R00FHEB

Vishay DaleIn Stock: 5757CMF55274R00FHEB Datasheet

UpgradeRFQ

CMF50274R00FHEB

Vishay DaleIn Stock: 1051CMF50274R00FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF14FTC274R are qualified based on the following electrical and mechanical parameters:

Core Compatibility Criteria:

• Resistance value: 274 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Composition: Metal Film (exact match required)
• Temperature Coefficient: ±50ppm/°C (exact match required)
• Package Type: Axial (exact match required)
• RoHS Compliance: ROHS3 Compliant (exact match required)

Allowable Variations:

• Power rating: Equal or greater than 0.25W
• Operating temperature range: Equal or greater than -55°C ~ 155°C
• Packaging format: Tape & Reel (TR) or Cut Tape (CT)
• Physical dimensions: Minor variations acceptable within axial package specifications
• Manufacturer: Different manufacturers permitted

Two substitute parts meet these criteria: CMF50274R00FHEB (manufacturer-recommended, identical power rating) and CMF55274R00FHEB (upgraded power rating).

Parameter Comparison

Engineering Selection Recommendations

CMF50274R00FHEB (Manufacturer-Recommended Substitute): This part is designated as the manufacturer-recommended alternative. It maintains identical electrical specifications (274 Ohms ±1%, 0.25W, ±50ppm/°C) and meets all core compatibility requirements. The extended operating temperature range (-55°C ~ 175°C) provides additional thermal margin. Enhanced moisture resistance and improved physical dimensions (smaller profile) offer design flexibility. ROHS3 compliance and REACH unaffected status confirm regulatory alignment. This substitute is optimal for direct replacement in existing designs.

CMF55274R00FHEB (Upgrade Substitute): This part provides identical electrical specifications with increased power dissipation capability (0.5W versus 0.25W). The higher power rating accommodates applications with greater thermal stress or design margin requirements. Extended operating temperature range (-55°C ~ 175°C) and moisture-resistant construction enhance reliability. ROHS3 compliance and REACH unaffected status maintain regulatory requirements. This substitute is suitable for applications requiring enhanced thermal performance or when higher power rating provides system-level benefits.

Both substitutes are Active products with established inventory levels and full regulatory compliance documentation.

Frequently Asked Questions (FAQ)

Q: Can CMF50274R00FHEB replace RNF14FTC274R in all applications? A: Yes. CMF50274R00FHEB maintains identical resistance (274 Ohms), tolerance (±1%), power rating (0.25W), and temperature coefficient (±50ppm/°C). The extended operating temperature range and moisture-resistant construction provide equivalent or enhanced performance. Physical dimensions differ slightly; verify PCB layout compatibility.

Q: What is the difference between CMF50274R00FHEB and CMF55274R00FHEB? A: Both parts share identical electrical specifications (274 Ohms ±1%, ±50ppm/°C). The primary difference is power rating: CMF50274R00FHEB is rated 0.25W (1/4W), while CMF55274R00FHEB is rated 0.5W (1/2W). CMF55274R00FHEB provides higher thermal dissipation capability and slightly larger physical dimensions.

Q: Are packaging format differences significant? A: RNF14FTC274R is supplied in Tape & Reel (TR) format. Both substitutes are supplied in Cut Tape (CT) format. This affects handling and assembly processes but does not impact electrical or mechanical compatibility. Verify compatibility with assembly equipment specifications.

Q: Do the substitute parts meet the same regulatory requirements? A: Yes. All three parts are ROHS3 Compliant and REACH Unaffected. Regulatory compliance is maintained across all substitutes.

Q: Can CMF55274R00FHEB be used in place of RNF14FTC274R if the application has thermal constraints? A: Yes. The higher power rating (0.5W) of CMF55274R00FHEB provides additional thermal margin and is electrically compatible. Physical dimensions are slightly larger; verify PCB layout accommodation.