RNF14FTC4K53 Equivalent & Substitute Parts

Part Overview

The RNF14FTC4K53 is a 4.53 kOhms ±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 full RoHS3 compliance and REACH unaffected certification. Substitute parts are identified to address inventory availability, enhanced power ratings, or extended operating temperature requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

RNF14FTC4K53

Stackpole Electronics IncIn Stock: 1148RNF14FTC4K53 Datasheet

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CMF554K5300FHEB

Vishay DaleIn Stock: 1490CMF554K5300FHEB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RNF14FTC4K53 is determined by the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 4.53 kOhms
• Tolerance: ±1%
• Composition: Metal Film
• Package type: Axial through-hole
• Temperature coefficient: ±50ppm/°C

Allowable Variation Parameters:

• Power rating: Equal or higher than 0.25W
• Operating temperature range: Equal or higher upper limit than 155°C
• Physical dimensions: Minor variations acceptable within axial package constraints
• Packaging format: Tape & Reel or Cut Tape formats are interchangeable for component selection

The CMF554K5300FHEB qualifies as a direct substitute based on matching all mandatory parameters while providing enhanced specifications in power rating (0.5W vs 0.25W) and extended maximum operating temperature (175°C vs 155°C).

Parameter Comparison

Engineering Selection Recommendations

Both the RNF14FTC4K53 and CMF554K5300FHEB are Active status components with full regulatory compliance. Selection between these parts should be based on application-specific requirements:

Select RNF14FTC4K53 when:

• Power dissipation is limited to 0.25W or below
• Operating temperature does not exceed 155°C
• Tape & Reel packaging format is required for automated assembly

Select CMF554K5300FHEB when:

• Application requires power dissipation up to 0.5W
• Operating temperature extends to 175°C
• Moisture resistance is a design requirement
• Cut Tape packaging format is acceptable for assembly processes

Both components maintain identical electrical performance in resistance value and tolerance, ensuring direct functional equivalence in circuit operation. The CMF554K5300FHEB provides enhanced thermal and environmental performance characteristics suitable for demanding industrial applications.

Frequently Asked Questions (FAQ)

Q: Can CMF554K5300FHEB replace RNF14FTC4K53 in all applications?

A: CMF554K5300FHEB is electrically and mechanically compatible as a direct substitute. The higher power rating (0.5W vs 0.25W) and extended operating temperature range (175°C vs 155°C) make it suitable for applications within the original part's specifications. Physical dimensions are comparable within axial package tolerances.

Q: What is the significance of the ±1% tolerance specification?

A: The ±1% tolerance indicates the maximum deviation of the actual resistance value from the nominal 4.53 kOhms specification. Both parts maintain this tolerance, ensuring equivalent precision for circuit design calculations and performance.

Q: Are the packaging formats interchangeable?

A: Tape & Reel (TR) and Cut Tape (CT) formats contain identical components with different presentation for assembly automation. Format selection depends on manufacturing process requirements, not component performance.

Q: Why does CMF554K5300FHEB have a higher power rating?

A: The 0.5W rating reflects the component's thermal dissipation capability. A higher power rating does not affect circuit operation when the actual power dissipation remains within the original 0.25W specification; it provides additional thermal margin for reliability.

Q: Are both parts compliant with current regulatory standards?

A: Both RNF14FTC4K53 and CMF554K5300FHEB are ROHS3 compliant and REACH unaffected, meeting current electronic component regulatory requirements for industrial and commercial applications.