RNF14FTC5K23 Equivalent & Substitute Parts

Part Overview

The RNF14FTC5K23 is a 5.23 kOhms ±1% metal film axial resistor rated at 0.25W (1/4W) manufactured by Stackpole Electronics Inc. This component is designed for through-hole applications requiring flame retardant coating and safety-rated construction. The part maintains Active product status with 722 units in current inventory. Substitute parts are identified to address application requirements including higher power ratings, enhanced moisture resistance, or extended operating temperature ranges while maintaining the core electrical specifications.

Substiute Parts

RNF14FTC5K23

Stackpole Electronics IncIn Stock: 772RNF14FTC5K23 Datasheet

Current PartRFQ

CMF555K2300FHEB

Vishay DaleIn Stock: 1476CMF555K2300FHEB Datasheet

UpgradeRFQ

CMF505K2300FHEB

Vishay DaleIn Stock: 1824CMF505K2300FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF14FTC5K23 are qualified based on the following electrical and mechanical parameters:

Core Electrical Specifications (Non-Negotiable):

• Resistance value: 5.23 kOhms
• Tolerance: ±1%
• Composition: Metal Film
• Temperature Coefficient: ±50ppm/°C

Mechanical & Package Compatibility:

• Package Type: Axial (through-hole)
• Number of Terminations: 2
• Termination Style: Axial leads

Allowable Variations:

• Power Rating: May be equal or higher than 0.25W
• Operating Temperature Range: May be equal or extended
• Features: Must include Flame Retardant Coating and Safety designation
• Moisture Resistance: May be enhanced beyond base specification

The substitute parts CMF505K2300FHEB and CMF555K2300FHEB from Vishay Dale meet these criteria while offering improved moisture resistance and extended temperature operating ranges.

Parameter Comparison

Engineering Selection Recommendations

CMF505K2300FHEB (Manufacturer Recommended Substitute): This part provides direct electrical and power rating equivalence to the RNF14FTC5K23 while offering enhanced moisture resistance and extended operating temperature capability to 175°C. Physical dimensions are smaller, which may provide layout advantages in space-constrained applications. All regulatory compliance certifications (ROHS3, REACH) are maintained. This substitute is suitable for direct replacement in applications where the original specification is met and additional environmental protection is beneficial.

CMF555K2300FHEB (Upgrade Substitute): This part maintains identical electrical specifications and tolerance but provides doubled power rating (0.5W vs 0.25W) and extended operating temperature range to 175°C. Enhanced moisture resistance is included. This upgrade path is applicable when thermal margin or power dissipation headroom is required, or when operating in elevated temperature environments. All regulatory compliance certifications are maintained.

Frequently Asked Questions (FAQ)

Q: Can CMF505K2300FHEB be used as a direct replacement for RNF14FTC5K23? A: Yes. Both parts share identical resistance (5.23 kOhms), tolerance (±1%), power rating (0.25W), and temperature coefficient (±50ppm/°C). The CMF505K2300FHEB includes moisture resistance enhancement and operates to 175°C versus 155°C. Physical dimensions differ slightly but both are axial through-hole packages suitable for standard PCB layouts.

Q: What is the difference between the two substitute parts? A: CMF505K2300FHEB maintains the 0.25W power rating of the original part. CMF555K2300FHEB provides a 0.5W power rating. Both offer identical electrical performance and extended temperature range. Selection depends on thermal requirements and available PCB space.

Q: Are there physical size constraints when substituting? A: Yes. The RNF14FTC5K23 measures 0.093" diameter × 0.250" length. CMF505K2300FHEB is smaller at 0.065" × 0.150", while CMF555K2300FHEB is 0.090" × 0.240". Verify PCB hole spacing and component clearance before substitution, particularly in high-density layouts.

Q: Do all parts meet the same regulatory requirements? A: Yes. RNF14FTC5K23, CMF505K2300FHEB, and CMF555K2300FHEB are all ROHS3 Compliant and REACH Unaffected. All carry flame retardant coating and safety designation.

Q: What is the operating temperature difference? A: RNF14FTC5K23 operates from -55°C to 155°C. Both Vishay Dale substitutes extend the upper limit to 175°C, providing 20°C additional thermal margin for high-temperature applications.