RNF14FTC392R Equivalent & Substitute Parts

Part Overview

The RNF14FTC392R is a 392 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 is currently in active production status with 770 pieces available in stock.

Substitute parts are identified when equivalent electrical characteristics and mechanical compatibility exist within the allowed parameter ranges for axial through-hole resistors. Substitution becomes necessary due to inventory availability, supply chain optimization, or design flexibility requirements.

Substiute Parts

RNF14FTC392R

Stackpole Electronics IncIn Stock: 850RNF14FTC392R Datasheet

Current PartRFQ

CMF55392R00FHEB

Vishay DaleIn Stock: 3413CMF55392R00FHEB Datasheet

UpgradeRFQ

CMF55392R00FHEK

Vishay DaleIn Stock: 876CMF55392R00FHEK Datasheet

UpgradeRFQ

CMF50392R00FHEB

Vishay DaleIn Stock: 5010CMF50392R00FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF14FTC392R are qualified based on the following criteria:

Electrical Equivalence: All substitute parts maintain the same resistance value (392 Ohms) and tolerance (±1%), ensuring direct functional replacement in circuits requiring this specific resistance.

Composition & Construction: All substitutes use metal film composition with flame retardant coating and safety features, matching the core construction of the main part.

Temperature Coefficient: All substitutes maintain ±50ppm/°C temperature coefficient, ensuring thermal stability equivalent to the original part.

Compliance: All substitutes are ROHS3 compliant and carry EAR99 ECCN classification, matching the regulatory status of the main part.

Mechanical Compatibility: All substitutes use axial package configuration with two terminations, compatible with existing PCB layouts designed for the RNF14FTC392R.

The substitute parts are differentiated by power rating (0.25W vs. 0.5W), packaging format (Tape & Reel, Cut Tape, or Bulk), and extended operating temperature range in some cases.

Parameter Comparison

Engineering Selection Recommendations

CMF50392R00FHEB (Manufacturer Recommended): This part provides direct electrical and mechanical equivalence to the RNF14FTC392R with identical 0.25W power rating and axial configuration. The extended operating temperature range (-55°C to 175°C) provides additional thermal margin. Moisture-resistant construction offers enhanced environmental protection. Available in Cut Tape packaging with 4984 pieces in stock. ROHS3 compliant and REACH unaffected status maintained.

CMF55392R00FHEB (Upgrade Option): This substitute offers increased power dissipation capability (0.5W vs. 0.25W) while maintaining all electrical parameters. The higher power rating provides design margin for applications with potential thermal stress. Extended operating temperature range and moisture-resistant features enhance reliability. Available in Cut Tape format with 3379 pieces in stock. ROHS3 compliant and REACH unaffected.

CMF55392R00FHEK (Bulk Packaging Option): Functionally identical to CMF55392R00FHEB with 0.5W power rating and extended temperature range. Supplied in Bulk packaging format. ROHS3 compliant with REACH affected status. 853 pieces available in stock.

All three substitutes maintain active product status and meet the core electrical and mechanical requirements for direct replacement in circuits designed for the RNF14FTC392R.

Frequently Asked Questions (FAQ)

Q: Can CMF50392R00FHEB directly replace RNF14FTC392R without circuit modification?

A: Yes. Both parts share identical resistance (392 Ohms), tolerance (±1%), power rating (0.25W), temperature coefficient (±50ppm/°C), and axial package configuration. Electrical and mechanical compatibility is direct.

Q: What is the advantage of using CMF55392R00FHEB over CMF50392R00FHEB?

A: CMF55392R00FHEB provides doubled power dissipation capability (0.5W vs. 0.25W) while maintaining all other electrical parameters. This higher power rating offers thermal margin in applications where the original 0.25W specification may approach its limits.

Q: Are there physical size differences between the main part and substitutes?

A: Yes. The RNF14FTC392R measures 0.093" Dia x 0.250" L (2.35mm x 6.35mm). CMF50392R00FHEB measures 0.065" Dia x 0.150" L (1.65mm x 3.81mm). CMF55392R00FHEB and CMF55392R00FHEK measure 0.090" Dia x 0.240" L (2.29mm x 6.10mm). Verify PCB layout clearances before substitution.

Q: What is the difference between Cut Tape and Bulk packaging?

A: Cut Tape (CT) packaging provides individual component strips suitable for automated pick-and-place assembly. Bulk packaging supplies loose components. Selection depends on assembly process requirements and handling procedures.

Q: Do all substitutes maintain ROHS3 compliance?

A: Yes. All three substitute parts are ROHS3 compliant. CMF50392R00FHEB and CMF55392R00FHEB are REACH unaffected. CMF55392R00FHEK is REACH affected. Verify REACH compliance requirements for your specific application.

Q: What is the temperature coefficient significance for these resistors?

A: All parts maintain ±50ppm/°C temperature coefficient, ensuring resistance value stability across the operating temperature range. This specification is critical for precision analog circuits and measurement applications.

Q: Can I use a 0.5W rated resistor in a circuit designed for 0.25W?

A: Yes. A higher power-rated component can be used in place of a lower-rated component when all other electrical parameters match. The 0.5W rated substitutes (CMF55 series) provide additional thermal headroom without affecting circuit function.