RNF14FTC953R Equivalent & Substitute Parts

Part Overview

The RNF14FTC953R is a 953 Ohm ±1% metal film through-hole resistor rated at 0.25W (1/4W) in axial package configuration, manufactured by Stackpole Electronics Inc. This component is classified as Active product status and is ROHS3 compliant. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and application-specific performance requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

RNF14FTC953R

Stackpole Electronics IncIn Stock: 985RNF14FTC953R Datasheet

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RNF14BTE953R

Stackpole Electronics IncIn Stock: 2583RNF14BTE953R Datasheet

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CMF55953R00FHEB

Vishay DaleIn Stock: 2109CMF55953R00FHEB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF14FTC953R are qualified based on the following criteria:

Primary Compatibility Parameters:

• Resistance value: 953 Ohms (exact match required)
• Composition: Metal Film (maintained across all substitutes)
• Package: Axial configuration (maintained across all substitutes)
• Compliance: ROHS3 Compliant (maintained across all substitutes)

Allowable Variations:

• Tolerance: May be equal or tighter (±1% or better)
• Power rating: May be equal or higher (0.25W or greater)
• Temperature coefficient: May be equal or lower in absolute value
• Operating temperature range: May be equal or extended
• Packaging format: Tape & Reel (TR) or Cut Tape (CT) are interchangeable for component-level selection

Two substitute parts meet these criteria: RNF14BTE953R (Stackpole Electronics Inc, tighter tolerance upgrade) and CMF55953R00FHEB (Vishay Dale, higher power rating upgrade).

Parameter Comparison

Engineering Selection Recommendations

RNF14BTE953R (Stackpole Electronics Inc): This substitute provides tighter tolerance performance (±0.1% versus ±1%) and improved temperature coefficient stability (±25ppm/°C versus ±50ppm/°C) while maintaining identical power rating and physical dimensions. Both parts are manufactured by Stackpole Electronics Inc and carry Active product status with ROHS3 compliance. Selection of this part is appropriate for applications requiring enhanced precision without thermal performance trade-offs.

CMF55953R00FHEB (Vishay Dale): This substitute provides increased power dissipation capability (0.5W versus 0.25W) and extended operating temperature range (-55°C ~ 175°C versus -55°C ~ 155°C). Physical dimensions are slightly reduced (0.090" Dia x 0.240" L versus 0.093" Dia x 0.250" L). Both parts maintain ±1% tolerance and ROHS3 compliance. Selection of this part is appropriate for applications requiring higher thermal headroom or extended temperature operation. Dimensional variation must be evaluated for mechanical fit in the target application.

Frequently Asked Questions (FAQ)

Q: Can RNF14BTE953R be used as a direct replacement for RNF14FTC953R?

A: Yes. Both parts share identical resistance (953 Ohms), power rating (0.25W), physical dimensions (0.093" Dia x 0.250" L), and operating temperature range (-55°C ~ 155°C). RNF14BTE953R provides superior tolerance (±0.1% versus ±1%) and temperature coefficient (±25ppm/°C versus ±50ppm/°C). The primary difference is packaging format: RNF14FTC953R is supplied in Tape & Reel, while RNF14BTE953R is supplied in Cut Tape.

Q: Can CMF55953R00FHEB be used as a direct replacement for RNF14FTC953R?

A: CMF55953R00FHEB is electrically compatible for the 953 Ohm resistance value and maintains ±1% tolerance and ROHS3 compliance. However, physical dimensions differ slightly (0.090" Dia x 0.240" L versus 0.093" Dia x 0.250" L). Mechanical fit in the target application must be evaluated. The higher power rating (0.5W versus 0.25W) and extended temperature range (-55°C ~ 175°C versus -55°C ~ 155°C) provide additional performance margin.

Q: What is the significance of tolerance differences between these parts?

A: Tolerance specifies the allowable deviation from the nominal 953 Ohm resistance value. RNF14FTC953R and CMF55953R00FHEB allow ±1% deviation (approximately 943.97 to 962.03 Ohms). RNF14BTE953R allows ±0.1% deviation (approximately 952.053 to 953.947 Ohms). Tighter tolerance is beneficial in precision circuits where resistance accuracy directly affects circuit performance.

Q: What is the significance of temperature coefficient differences?

A: Temperature coefficient indicates how resistance changes with temperature. RNF14FTC953R and CMF55953R00FHEB have ±50ppm/°C, meaning resistance can change by up to 50 parts per million per degree Celsius. RNF14BTE953R has ±25ppm/°C, providing half the temperature-induced variation. Lower temperature coefficient is beneficial in applications with wide operating temperature ranges or where temperature stability is critical.

Q: Are packaging format differences (Tape & Reel versus Cut Tape) significant for component selection?

A: Packaging format affects procurement and assembly logistics but not electrical or mechanical component performance. Tape & Reel (TR) is optimized for automated assembly processes. Cut Tape (CT) is suitable for manual assembly or smaller volume applications. Component-level electrical and mechanical specifications remain identical regardless of packaging format.

Q: What compliance certifications apply to all three parts?

A: All three parts are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements for electronic components in most jurisdictions.