RNF14FTC576R Equivalent & Substitute Parts

Part Overview

The RNF14FTC576R is a 576 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-grade construction, designed for applications requiring precision resistance values with reliable performance across industrial temperature ranges. The part is currently in active production status with ROHS3 compliance and maintains consistent availability in inventory.

Substitute parts are identified when equivalent electrical specifications and mechanical compatibility can be maintained while potentially offering enhanced features, improved availability, or alternative packaging options.

Substiute Parts

RNF14FTC576R

Stackpole Electronics IncIn Stock: 1095RNF14FTC576R Datasheet

Current PartRFQ

CMF55576R00FHEB

Vishay DaleIn Stock: 10570CMF55576R00FHEB Datasheet

UpgradeRFQ

CMF50576R00FHEB

Vishay DaleIn Stock: 1340CMF50576R00FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF14FTC576R are qualified based on the following criteria:

Electrical Equivalence Requirements:

• Identical resistance value: 576 Ohms
• Matching tolerance: ±1%
• Identical temperature coefficient: ±50ppm/°C
• Metal film composition maintained

Mechanical Compatibility:

• Axial through-hole package format
• Two terminations
• Physical dimensions compatible with standard PCB layouts

Compliance & Safety:

• ROHS3 compliance maintained
• Flame retardant coating present
• Safety-grade construction

Two substitute parts meet these criteria: CMF50576R00FHEB (manufacturer-recommended, identical power rating) and CMF55576R00FHEB (upgraded power rating option).

Parameter Comparison

Engineering Selection Recommendations

CMF50576R00FHEB (Manufacturer-Recommended Substitute): This part provides direct electrical and mechanical equivalence to the RNF14FTC576R while maintaining identical 0.25W power rating. The CMF50 series offers extended operating temperature range (-55°C ~ 175°C versus -55°C ~ 155°C) and adds moisture-resistant features. Both parts are ROHS3 compliant and active in production. This substitute is appropriate for direct replacement in existing designs without thermal or power dissipation modifications.

CMF55576R00FHEB (Upgrade Option): This part maintains all electrical specifications and compliance requirements while providing doubled power rating (0.5W versus 0.25W). The extended operating temperature range and moisture-resistant construction offer enhanced environmental performance. This substitute is suitable for applications where increased thermal margin or enhanced reliability in humid environments is beneficial. Physical dimensions are slightly larger; PCB layout verification is necessary.

Both substitute parts maintain active production status, ROHS3 compliance, and flame retardant safety features required for the original specification.

Frequently Asked Questions (FAQ)

Q: Can CMF50576R00FHEB be used as a direct replacement for RNF14FTC576R? A: Yes. Both parts share identical electrical specifications (576 Ohms ±1%, 0.25W, ±50ppm/°C) and axial through-hole package format. The CMF50 series provides equivalent performance with extended temperature range and moisture resistance.

Q: What is the difference between CMF50576R00FHEB and CMF55576R00FHEB? A: The primary difference is power rating: CMF50 is rated 0.25W (1/4W) while CMF55 is rated 0.5W (1/2W). Both maintain identical resistance, tolerance, and temperature coefficient. Physical dimensions differ slightly due to the higher power rating. Electrical performance in standard applications is equivalent; the CMF55 provides additional thermal margin.

Q: Are there packaging differences between the main part and substitutes? A: Yes. The RNF14FTC576R is supplied in Tape & Reel (TR) format, while both Vishay Dale substitutes are supplied in Cut Tape (CT) format. This affects procurement and assembly processes but does not impact electrical or mechanical compatibility.

Q: Do the substitute parts meet the same compliance requirements? A: Yes. All three parts are ROHS3 compliant, feature flame retardant coating, and maintain safety-grade construction. The substitute parts add moisture-resistant properties not specified in the original part.

Q: What is the operating temperature difference? A: The RNF14FTC576R operates from -55°C to 155°C. Both substitute parts extend the upper limit to 175°C, providing 20°C additional thermal headroom. This does not affect compatibility in applications within the original temperature range.

Q: Can CMF55576R00FHEB be used in place of CMF50576R00FHEB? A: Yes, from an electrical standpoint. The CMF55 provides higher power rating and thermal capability. Physical dimensions are slightly larger; verify PCB layout accommodates the increased size before substitution.