RNF14FAC23K7 Equivalent & Substitute Parts

Part Overview

The RNF14FAC23K7 is a 23.7 kOhms ±1% 0.25W (1/4W) through-hole axial resistor manufactured by Stackpole Electronics Inc. This metal film resistor features flame retardant coating and safety characteristics, designed for general-purpose electronic applications requiring precision resistance values. The part is currently active in production with 868 units in stock. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the allowed parameter range for this resistor category.

Substiute Parts

RNF14FAC23K7

Stackpole Electronics IncIn Stock: 931RNF14FAC23K7 Datasheet

Current PartRFQ

CMF5523K700FHEB

Vishay DaleIn Stock: 1922CMF5523K700FHEB Datasheet

UpgradeRFQ

CMF5023K700FHEB

Vishay DaleIn Stock: 1825CMF5023K700FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF14FAC23K7 are qualified based on the following criteria:

Electrical Equivalence: Resistance value (23.7 kOhms) and tolerance (±1%) must be identical. Temperature coefficient (±50ppm/°C) must match.

Mechanical Compatibility: Package type must remain axial to ensure direct board-level substitution without layout modifications.

Composition & Features: Metal film construction with flame retardant coating and safety characteristics must be maintained.

Compliance & Status: All substitute parts must maintain ROHS3 compliance and active product status.

Power Rating Consideration: Substitute parts may have equal or higher power ratings (0.25W or greater) without affecting circuit functionality, as higher-rated components operate within the same electrical specifications.

Two substitute parts meet these criteria:

1. CMF5023K700FHEB (Manufacturer Recommended) – Identical 0.25W power rating with enhanced operating temperature range (-55°C ~ 175°C)
2. CMF5523K700FHEB (Upgrade Option) – Higher 0.5W power rating with enhanced operating temperature range (-55°C ~ 175°C)

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (CMF5023K700FHEB): This part is the manufacturer-recommended substitute. It maintains identical electrical specifications and power rating while providing an extended operating temperature range to 175°C. The Vishay Dale CMF series offers moisture-resistant characteristics, enhancing reliability in humid environments. This part is suitable for direct board-level substitution without circuit re-evaluation.

Upgrade Option (CMF5523K700FHEB): This part provides a higher power rating (0.5W vs. 0.25W) while maintaining all other electrical parameters. The increased power dissipation capability provides additional thermal margin in applications where the original 0.25W rating operates near maximum. This part is suitable for applications requiring enhanced thermal performance or where future design modifications may increase power dissipation.

Both substitute parts maintain ROHS3 compliance and active production status, ensuring long-term availability and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can CMF5023K700FHEB be used as a direct replacement for RNF14FAC23K7?

A: Yes. The CMF5023K700FHEB maintains identical resistance (23.7 kOhms), tolerance (±1%), power rating (0.25W), and axial package configuration. All electrical parameters and compliance certifications are equivalent, enabling direct substitution without circuit modification.

Q: What is the difference between CMF5023K700FHEB and CMF5523K700FHEB?

A: Both parts share identical electrical specifications (23.7 kOhms, ±1%, ±50ppm/°C). The primary difference is power rating: CMF5023K700FHEB is rated at 0.25W, while CMF5523K700FHEB is rated at 0.5W. The higher power rating in the CMF55 series provides increased thermal dissipation capability without affecting circuit operation at the original power level.

Q: Are the physical dimensions compatible between these parts?

A: All three parts use axial package configuration, enabling mechanical compatibility on standard through-hole PCB layouts. Specific dimensional variations (diameter and length) exist between parts but do not affect board-level mounting or circuit functionality.

Q: Do the substitute parts maintain the same operating temperature range?

A: The RNF14FAC23K7 operates from -55°C to 155°C. Both Vishay Dale substitutes extend this range to -55°C to 175°C, providing enhanced performance in high-temperature applications.

Q: Are all parts RoHS3 compliant?

A: Yes. The RNF14FAC23K7 and both substitute parts (CMF5023K700FHEB and CMF5523K700FHEB) are ROHS3 compliant, meeting current environmental and regulatory requirements.

Q: What additional features do the Vishay Dale parts offer?

A: Both CMF series substitutes include moisture-resistant characteristics in addition to the flame retardant coating present in the original part. This enhancement improves reliability in applications exposed to humidity or moisture.