RNF14FTC52R3 Equivalent & Substitute Parts

Part Overview

The RNF14FTC52R3 is a 52.3 Ohm ±1% metal film axial through-hole resistor rated at 0.25W (1/4W) manufactured by Stackpole Electronics Inc. This component features flame retardant coating and safety construction, designed for applications requiring precision resistance in compact form factors. The part maintains Active product status with 822 units in current inventory. Substitute parts are identified to address supply continuity, packaging preferences, or performance envelope requirements while maintaining electrical and mechanical compatibility within specified parameters.

Substiute Parts

RNF14FTC52R3

Stackpole Electronics IncIn Stock: 917RNF14FTC52R3 Datasheet

Current PartRFQ

CMF5552R300FHEB

Vishay DaleIn Stock: 1371CMF5552R300FHEB Datasheet

UpgradeRFQ

CMF5052R300FHEB

Vishay DaleIn Stock: 1618CMF5052R300FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF14FTC52R3 are qualified based on the following criteria:

Electrical Parameters (Must Match):

• Resistance value: 52.3 Ohms
• Tolerance: ±1%
• Composition: Metal Film
• Temperature Coefficient: ±50ppm/°C

Mechanical Parameters (Must Match):

• Package type: Axial through-hole
• Number of terminations: 2

Allowable Variations:

• Power rating: Equal or greater than 0.25W
• Operating temperature range: Equal or greater than -55°C ~ 155°C
• Packaging format: Tape & Reel (TR) or Cut Tape (CT)
• Manufacturer: Different manufacturers permitted if electrical and mechanical specifications align

Two substitute parts meet these criteria: CMF5052R300FHEB (manufacturer-recommended, 1/4W rating) and CMF5552R300FHEB (upgraded power rating, 1/2W).

Parameter Comparison

Engineering Selection Recommendations

CMF5052R300FHEB (Manufacturer-Recommended Substitute): This part is the direct equivalent substitute, matching the 0.25W power rating and maintaining identical electrical specifications. The extended operating temperature range (-55°C ~ 175°C) provides additional thermal margin. Both parts are ROHS3 compliant and carry equivalent safety certifications. Selection of this part is appropriate for direct replacement in existing designs without circuit modification.

CMF5552R300FHEB (Upgraded Substitute): This part provides increased power dissipation capability at 0.5W (1/2W) while maintaining all electrical parameters. The higher power rating accommodates applications with greater thermal stress or provides design margin for future performance requirements. Extended operating temperature range (-55°C ~ 175°C) exceeds the original specification. This part is suitable for applications where increased power handling is beneficial or required.

Both substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original component.

Frequently Asked Questions (FAQ)

Q: Can CMF5052R300FHEB be used as a direct replacement for RNF14FTC52R3? A: Yes. The CMF5052R300FHEB matches the 52.3 Ohm resistance, ±1% tolerance, 0.25W power rating, and axial package configuration. The extended operating temperature range provides additional thermal capability without affecting circuit performance.

Q: What is the difference between CMF5052R300FHEB and CMF5552R300FHEB? A: Both parts share identical electrical specifications (52.3 Ohms, ±1%, ±50ppm/°C). The primary difference is power rating: CMF5052R300FHEB is rated at 0.25W, while CMF5552R300FHEB is rated at 0.5W. The higher power rating in CMF5552R300FHEB allows greater current handling and thermal dissipation.

Q: Are packaging format differences significant? A: The main part is supplied in Tape & Reel (TR) format, while both substitutes are supplied in Cut Tape (CT) format. Both formats are standard for through-hole component distribution. Format selection depends on assembly process requirements and volume considerations.

Q: Do substitute parts maintain the same physical dimensions? A: Physical dimensions differ slightly. RNF14FTC52R3 measures 0.093" Dia x 0.250" L (2.35mm x 6.35mm). CMF5052R300FHEB measures 0.065" Dia x 0.150" L (1.65mm x 3.81mm). CMF5552R300FHEB measures 0.090" Dia x 0.240" L (2.29mm x 6.10mm). These dimensional variations are within standard axial resistor tolerances and do not affect circuit board layout compatibility for through-hole applications.

Q: Are all parts RoHS compliant? A: Yes. RNF14FTC52R3, CMF5052R300FHEB, and CMF5552R300FHEB are all ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.