RNF14FTC453R Equivalent & Substitute Parts

Part Overview

The RNF14FTC453R is a 453 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 full RoHS3 compliance. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility allow direct replacement while maintaining circuit performance and regulatory compliance.

Substiute Parts

RNF14FTC453R

Stackpole Electronics IncIn Stock: 1219RNF14FTC453R Datasheet

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CMF55453R00FHEB

Vishay DaleIn Stock: 2518CMF55453R00FHEB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RNF14FTC453R is determined by the following critical parameters:

Electrical Equivalence Requirements:

• Resistance value: 453 Ohms (exact match required)
• Tolerance: ±1% (maintains circuit precision specifications)
• Temperature coefficient: ±50ppm/°C (ensures thermal stability consistency)
• Composition: Metal film (preserves frequency response and noise characteristics)

Mechanical Compatibility Requirements:

• Package type: Axial through-hole (ensures PCB footprint compatibility)
• Number of terminations: 2 (standard axial configuration)

Regulatory & Compliance Requirements:

• RoHS3 compliance (mandatory for regulated applications)
• REACH unaffected status (ensures material compliance)

Power Rating Consideration: Substitute parts with equal or higher power ratings (0.25W or greater) are acceptable, as increased power dissipation capability does not degrade circuit performance and provides additional thermal margin.

Parameter Comparison

Engineering Selection Recommendations

The CMF55453R00FHEB from Vishay Dale qualifies as a direct substitute for the RNF14FTC453R based on electrical and mechanical equivalence. Both components share identical resistance values, tolerance specifications, temperature coefficients, and axial package configurations. Both maintain Active product status and full RoHS3 compliance with REACH unaffected certification.

The CMF55453R00FHEB provides enhanced specifications including higher power rating (0.5W versus 0.25W), extended operating temperature range (-55°C to 175°C versus -55°C to 155°C), and additional moisture resistance features. These characteristics represent functional improvements without introducing incompatibility.

Physical dimensions are comparable within standard manufacturing tolerances for axial resistors, with the substitute measuring slightly smaller (0.090" diameter versus 0.093" diameter). This dimensional difference does not affect PCB footprint compatibility for standard axial through-hole layouts.

Frequently Asked Questions (FAQ)

Q: Can the CMF55453R00FHEB replace the RNF14FTC453R in existing designs?

A: Yes. Both components share identical electrical specifications (453 Ohms ±1%, ±50ppm/°C temperature coefficient) and axial package configuration. The substitute's higher power rating and extended temperature range provide additional design margin without affecting circuit operation.

Q: Are there physical installation differences between these parts?

A: Both components use standard axial through-hole terminations. The CMF55453R00FHEB is slightly smaller in diameter (0.090" versus 0.093"), but this difference falls within standard PCB hole tolerances and does not require layout modifications.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the RNF14FTC453R and CMF55453R00FHEB are ROHS3 compliant and REACH unaffected, meeting identical regulatory standards for controlled applications.

Q: What is the significance of the higher power rating on the substitute?

A: The CMF55453R00FHEB's 0.5W rating versus the RNF14FTC453R's 0.25W rating indicates greater thermal dissipation capability. In applications where the original 0.25W part operates at or near its power limit, the substitute provides additional thermal margin and improved reliability.

Q: Are there packaging format differences?

A: The RNF14FTC453R is supplied in Tape & Reel (TR) format, while the CMF55453R00FHEB is supplied in Cut Tape (CT) format. Both are standard packaging options for through-hole resistors and do not affect component performance or compatibility.

Q: How do the temperature ranges compare?

A: The RNF14FTC453R operates from -55°C to 155°C, while the CMF55453R00FHEB extends to 175°C. For applications operating within the original -55°C to 155°C range, both parts perform identically. The substitute accommodates higher temperature environments without performance degradation.