RNF14FTC261R Equivalent & Substitute Parts

Part Overview

The RNF14FTC261R is a 261 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 1007 units in current inventory. Substitute parts are identified to address availability, packaging preferences, or enhanced performance characteristics while maintaining electrical and mechanical compatibility.

Substiute Parts

RNF14FTC261R

Stackpole Electronics IncIn Stock: 1081RNF14FTC261R Datasheet

Current PartRFQ

CMF55261R00FHEB

Vishay DaleIn Stock: 823CMF55261R00FHEB Datasheet

UpgradeRFQ

CMF50261R00FHEB

Vishay DaleIn Stock: 2022CMF50261R00FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RNF14FTC261R is determined by the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 261 Ohms
• Tolerance: ±1%
• Composition: Metal Film
• Temperature Coefficient: ±50ppm/°C
• Package Type: Axial (through-hole)
• RoHS Compliance: ROHS3 Compliant

Allowable Variation Parameters:

• Power rating may be equal or higher (0.25W or greater)
• Operating temperature range may be equal or extended
• Physical dimensions may vary within axial package constraints
• Packaging format (Tape & Reel vs. Cut Tape) does not affect electrical compatibility
• Moisture resistance features may be added without affecting substitution validity

The identified substitute parts CMF50261R00FHEB and CMF55261R00FHEB satisfy all mandatory matching parameters while offering enhanced or equivalent performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

CMF50261R00FHEB (MFR Recommended Substitute): This part provides direct electrical equivalence to the RNF14FTC261R with identical power rating (0.25W) and resistance specifications. The extended operating temperature range (-55°C ~ 175°C versus -55°C ~ 155°C) offers improved thermal performance margin. Moisture-resistant construction enhances reliability in humid environments. ROHS3 compliance and REACH Unaffected status align with regulatory requirements. Higher inventory availability (1935 units) supports procurement flexibility.

CMF55261R00FHEB (Upgrade Substitute): This part maintains all electrical equivalence parameters while providing doubled power dissipation capacity (0.5W versus 0.25W). The upgrade path is suitable for applications requiring thermal margin or where component consolidation across multiple power ratings is beneficial. Extended operating temperature range and moisture-resistant features provide enhanced environmental performance. REACH Affected status requires compliance verification in specific regulatory jurisdictions.

Both substitute parts maintain Active product status and preserve all critical electrical characteristics necessary for direct circuit substitution.

Frequently Asked Questions (FAQ)

Q: Can CMF50261R00FHEB be used as a direct replacement for RNF14FTC261R? A: Yes. Both parts share identical resistance (261 Ohms), tolerance (±1%), power rating (0.25W), temperature coefficient (±50ppm/°C), and composition (metal film). The extended operating temperature range of CMF50261R00FHEB (-55°C ~ 175°C) provides additional thermal margin without affecting circuit operation.

Q: What is the difference between CMF50261R00FHEB and CMF55261R00FHEB? A: The primary difference is power rating: CMF50261R00FHEB is rated 0.25W (matching the original part), while CMF55261R00FHEB is rated 0.5W. Both maintain identical resistance, tolerance, and temperature coefficient. The CMF55261R00FHEB upgrade provides increased thermal dissipation capability and is suitable for applications with higher power margins.

Q: Does packaging format affect electrical compatibility? A: No. The RNF14FTC261R is supplied in Tape & Reel format, while substitute parts are available in Cut Tape format. Both packaging formats contain electrically identical components; the difference is purely logistical and does not affect circuit performance or substitution validity.

Q: Are there physical dimension differences between these parts? A: Yes. The RNF14FTC261R measures 0.093" Dia x 0.250" L (2.35mm x 6.35mm), while CMF50261R00FHEB measures 0.065" Dia x 0.150" L (1.65mm x 3.81mm). Both are axial package types suitable for through-hole mounting. Verify PCB layout compatibility before substitution if space constraints exist.

Q: What is the significance of moisture-resistant features in the substitute parts? A: The CMF50261R00FHEB and CMF55261R00FHEB include moisture-resistant construction, which enhances reliability in high-humidity or condensing environments compared to the base RNF14FTC261R specification. This feature does not affect electrical performance but improves long-term reliability in challenging environmental conditions.

Q: Are all parts RoHS3 compliant? A: Yes. The RNF14FTC261R, CMF50261R00FHEB, and CMF55261R00FHEB are all ROHS3 Compliant. The CMF50261R00FHEB is REACH Unaffected, while CMF55261R00FHEB is REACH Affected; verify REACH compliance requirements for your specific application jurisdiction.