RNF14FTC422R Equivalent & Substitute Parts

Part Overview

The RNF14FTC422R is a 422 Ohm ±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 in compact form factors. The part is currently active in production with 1044 units in stock. Equivalent and substitute parts are identified for applications requiring alternative specifications such as increased power ratings, improved tolerance, or enhanced environmental performance.

Substiute Parts

RNF14FTC422R

Stackpole Electronics IncIn Stock: 1095RNF14FTC422R Datasheet

Current PartRFQ

CMF55422R00BHEA

Vishay DaleIn Stock: 7330CMF55422R00BHEA Datasheet

UpgradeRFQ

CMF55422R00FHEB

Vishay DaleIn Stock: 6866CMF55422R00FHEB Datasheet

UpgradeRFQ

CMF50422R00FHEB

Vishay DaleIn Stock: 1769CMF50422R00FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF14FTC422R are qualified based on the following criteria:

Electrical Parameters (Must Match):

• Resistance value: 422 Ohms
• Temperature coefficient: ±50ppm/°C
• Composition: Metal Film
• RoHS compliance: ROHS3 Compliant

Allowable Variations:

• Tolerance: Equal or tighter than ±1% (±0.1% acceptable)
• Power rating: Equal or greater than 0.25W (0.5W acceptable)
• Operating temperature range: Equal or extended upper limit (175°C acceptable vs. 155°C)
• Features: Enhanced moisture resistance acceptable as upgrade

Package Compatibility:

• All substitutes maintain axial through-hole configuration
• Physical dimensions may vary within component mounting constraints

The three qualified substitutes represent two distinct upgrade categories: enhanced precision tolerance with increased power rating (CMF55422R00BHEA, CMF55422R00FHEB) and direct form-factor equivalent with moisture resistance enhancement (CMF50422R00FHEB).

Parameter Comparison

Engineering Selection Recommendations

CMF55422R00BHEA (Upgrade - Enhanced Precision) Select this part when applications require tighter tolerance control (±0.1% vs. ±1%) and higher power dissipation capability (0.5W vs. 0.25W). Extended operating temperature range to 175°C provides additional thermal margin. Moisture-resistant construction enhances reliability in humid environments. All parts maintain ROHS3 compliance and active production status.

CMF55422R00FHEB (Upgrade - Balanced Performance) This part offers the same power rating and temperature range as CMF55422R00BHEA while maintaining ±1% tolerance matching the original specification. Suitable for applications where tolerance precision is not critical but enhanced power handling and environmental protection are required. Active production status with 6781 units in stock.

CMF50422R00FHEB (Direct Equivalent - Manufacturer Recommended) This part maintains identical power rating (0.25W) and tolerance (±1%) to the RNF14FTC422R while providing moisture-resistant construction and extended operating temperature range. Designated as manufacturer-recommended substitute by Vishay Dale. Smallest physical dimensions among substitutes. Appropriate for direct replacement in space-constrained applications.

Frequently Asked Questions (FAQ)

Q: Can CMF55422R00BHEA replace RNF14FTC422R in all applications? A: CMF55422R00BHEA is electrically compatible with RNF14FTC422R for all applications requiring 422 Ohm resistance. The ±0.1% tolerance is tighter than the original ±1%, and 0.5W power rating exceeds the 0.25W requirement. Physical dimensions differ slightly (0.090" Dia x 0.240" L vs. 0.093" Dia x 0.250" L), which may affect board layout in space-constrained designs.

Q: What is the difference between CMF55422R00BHEA and CMF55422R00FHEB? A: Both parts share identical power rating (0.5W), operating temperature range (-55°C to 175°C), and physical dimensions. The primary difference is tolerance: CMF55422R00BHEA provides ±0.1% precision while CMF55422R00FHEB maintains ±1%. Select CMF55422R00BHEA for precision-critical circuits; select CMF55422R00FHEB for general-purpose applications requiring only standard tolerance.

Q: Is CMF50422R00FHEB a true equivalent to RNF14FTC422R? A: CMF50422R00FHEB matches the RNF14FTC422R in resistance value (422 Ohms), tolerance (±1%), and power rating (0.25W). All electrical parameters are identical. Physical dimensions are smaller (0.065" Dia x 0.150" L), and operating temperature range extends to 175°C. This part is designated as the manufacturer-recommended substitute.

Q: Do all substitute parts maintain RoHS3 compliance? A: All three substitute parts (CMF55422R00BHEA, CMF55422R00FHEB, CMF50422R00FHEB) are ROHS3 compliant, matching the compliance status of RNF14FTC422R. All parts are currently in active production status.

Q: What is the significance of moisture-resistant construction in the substitute parts? A: The substitute parts include moisture-resistant features not specified in the original RNF14FTC422R. This enhancement provides additional protection in humid or corrosive environments without affecting electrical performance or compatibility. Moisture resistance is a non-critical upgrade feature for applications not requiring it.

Q: Can physical dimension differences affect circuit board design? A: Physical dimensions vary among substitutes. CMF50422R00FHEB is the smallest (0.065" Dia x 0.150" L), while RNF14FTC422R is the largest (0.093" Dia x 0.250" L). CMF55 series parts are intermediate (0.090" Dia x 0.240" L). Verify board layout clearances and mounting hole spacing before substitution in space-constrained applications.