RNF14FTC287R Equivalent & Substitute Parts

Part Overview

The RNF14FTC287R is a 287 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 maintains Active product status with 713 units in current inventory. Substitute parts are identified to provide alternative sourcing options when the primary component becomes unavailable or when design requirements permit higher power ratings or enhanced environmental protection.

Substiute Parts

RNF14FTC287R

Stackpole Electronics IncIn Stock: 799RNF14FTC287R Datasheet

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CMF55287R00FHEB

Vishay DaleIn Stock: 2191CMF55287R00FHEB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RNF14FTC287R is determined by the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 287 Ohms
• Tolerance: ±1%
• Composition: Metal Film
• Package: Axial through-hole
• Temperature Coefficient: ±50ppm/°C
• Regulatory compliance: ROHS3 Compliant

Allowable Variation Parameters:

• Power rating: May be equal or higher (0.25W minimum)
• Operating temperature range: May be equal or extended
• Physical dimensions: Minor variations acceptable within axial package constraints
• Packaging format: Cut Tape (CT) or Tape & Reel (TR) formats are interchangeable for component-level substitution
• Additional features: Enhanced moisture resistance is permissible

The CMF55287R00FHEB qualifies as a substitute because it maintains all mandatory parameters while offering an increased power rating (0.5W vs 0.25W) and extended maximum operating temperature (175°C vs 155°C).

Parameter Comparison

Engineering Selection Recommendations

Both the RNF14FTC287R and CMF55287R00FHEB maintain Active product status and full compliance with ROHS3 and REACH regulations, ensuring long-term availability and regulatory acceptance in end-use applications.

The RNF14FTC287R is the primary selection when the circuit design specifies a 0.25W power dissipation budget and the operating environment remains within -55°C to 155°C.

The CMF55287R00FHEB serves as a direct substitute when higher power dissipation capability (0.5W) is required, when extended temperature operation to 175°C is necessary, or when enhanced moisture resistance is beneficial for the application environment. The CMF55287R00FHEB's slightly smaller physical dimensions (0.090" diameter vs 0.093") remain compatible with standard axial component PCB layouts.

Frequently Asked Questions (FAQ)

Q: Can CMF55287R00FHEB replace RNF14FTC287R in any circuit?

A: Yes, provided the circuit board layout accommodates the slightly smaller diameter (0.090" vs 0.093"). The higher power rating and extended temperature range of the CMF55287R00FHEB do not create compatibility issues in circuits designed for the RNF14FTC287R.

Q: What is the primary difference between these two parts?

A: The CMF55287R00FHEB provides double the power rating (0.5W vs 0.25W) and extends the maximum operating temperature by 20°C (175°C vs 155°C). Both maintain identical resistance, tolerance, and temperature coefficient specifications.

Q: Are the packaging formats interchangeable?

A: The RNF14FTC287R is supplied in Tape & Reel (TR) format, while the CMF55287R00FHEB is supplied in Cut Tape (CT) format. For component-level substitution in assembly, both formats are functionally equivalent. Packaging format selection depends on production volume and assembly equipment compatibility.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the RNF14FTC287R and CMF55287R00FHEB are ROHS3 Compliant and REACH Unaffected, ensuring equivalent regulatory acceptance across industrial and commercial applications.

Q: What is the temperature coefficient significance?

A: Both parts share an identical temperature coefficient of ±50ppm/°C, meaning resistance value stability across temperature variations is equivalent. This parameter is critical for precision analog circuits and measurement applications.