RNF14BAC523R Equivalent & Substitute Parts

Part Overview

The RNF14BAC523R is a 523 Ohm metal film axial resistor manufactured by Stackpole Electronics Inc. This 1/4W (0.25W) component features ±0.1% tolerance and flame retardant coating, designed for precision applications requiring tight tolerance specifications. The part is currently active in production with ROHS3 compliance and is suitable for through-hole assembly in axial package configuration. Substitute parts are identified when equivalent electrical and mechanical parameters are required due to inventory constraints, design flexibility, or application-specific performance improvements.

Substiute Parts

RNF14BAC523R

Stackpole Electronics IncIn Stock: 872RNF14BAC523R Datasheet

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CMF55523R00BEEB

Vishay DaleIn Stock: 2417CMF55523R00BEEB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The CMF55523R00BEEB from Vishay Dale qualifies as a substitute based on the following critical parameters:

• Resistance Value: Both parts are 523 Ohms
• Tolerance: Both maintain ±0.1% tolerance specification
• Composition: Both are metal film construction
• Package: Both use axial through-hole configuration
• Compliance: Both are ROHS3 compliant and REACH unaffected
• Terminations: Both have 2 terminations

The substitute part offers enhanced specifications in power rating (0.5W vs 0.25W), improved temperature coefficient (±25ppm/°C vs ±50ppm/°C), extended operating temperature range (-55°C ~ 175°C vs -55°C ~ 155°C), and additional moisture resistance features. These improvements maintain backward compatibility while providing design margin for demanding applications.

Parameter Comparison

Engineering Selection Recommendations

Both the RNF14BAC523R and CMF55523R00BEEB are active production components with full ROHS3 compliance and REACH unaffected status, making either suitable for new designs and production environments. The CMF55523R00BEEB provides enhanced performance margins through higher power dissipation capability (0.5W vs 0.25W), superior temperature stability (±25ppm/°C vs ±50ppm/°C), and extended operating temperature range to 175°C. The substitute part's moisture-resistant feature adds environmental protection for applications exposed to humidity. Physical dimensions are comparable and compatible with standard axial component placement. Selection between these parts should be based on application power dissipation requirements and thermal operating conditions.

Frequently Asked Questions (FAQ)

Q: Can CMF55523R00BEEB replace RNF14BAC523R in existing designs?

A: Yes. Both parts share identical resistance value (523 Ohms), tolerance (±0.1%), composition (metal film), and axial package configuration. The substitute part's higher power rating and improved temperature coefficient provide enhanced performance margins without affecting circuit functionality.

Q: What are the physical compatibility considerations?

A: Both parts use axial through-hole packages with comparable dimensions. The CMF55523R00BEEB is slightly smaller (0.090" Dia x 0.240" L vs 0.093" Dia x 0.250" L), ensuring compatibility with existing PCB layouts and component placement equipment.

Q: Are there compliance differences between these parts?

A: No. Both parts are ROHS3 compliant and REACH unaffected, meeting identical regulatory requirements for commercial and industrial applications.

Q: When should the higher power rating of CMF55523R00BEEB be considered?

A: The 0.5W rating of the substitute part provides additional thermal margin in applications where the main part's 0.25W rating approaches maximum dissipation limits. This is particularly relevant in high-ambient-temperature environments or circuits with sustained current flow.

Q: How do temperature coefficients affect circuit performance?

A: The CMF55523R00BEEB's ±25ppm/°C coefficient provides superior resistance stability across temperature variations compared to the RNF14BAC523R's ±50ppm/°C specification. This is beneficial in precision measurement circuits and temperature-sensitive applications.