RNF14BTD523R Equivalent & Substitute Parts

Part Overview

The RNF14BTD523R is a 523 Ohm metal film axial resistor manufactured by Stackpole Electronics Inc, rated at 0.25W (1/4W) with ±0.1% tolerance. This component is designed for precision applications requiring tight tolerance specifications and flame retardant construction. The part maintains Active product status with 935 units in current inventory. Equivalent and substitute parts are identified to support procurement flexibility, design optimization, and supply chain continuity when the primary part becomes unavailable or when application requirements permit upgraded specifications.

Substiute Parts

RNF14BTD523R

Stackpole Electronics IncIn Stock: 963RNF14BTD523R Datasheet

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CMF55523R00BEEB

Vishay DaleIn Stock: 2417CMF55523R00BEEB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the RNF14BTD523R is permissible with the CMF55523R00BEEB based on the following alignment of critical electrical and mechanical parameters:

Matching Parameters:

• Resistance value: 523 Ohms (identical)
• Tolerance: ±0.1% (identical)
• Composition: Metal Film (identical)
• Package: Axial (identical)
• RoHS Compliance: ROHS3 Compliant (identical)
• Operating Temperature Range: -55°C ~ 175°C (substitute exceeds minimum requirement)

Upgraded Parameters:

• Power Rating: 0.5W (1/2W) vs. 0.25W (1/4W) — substitute provides higher power dissipation capability
• Temperature Coefficient: ±25ppm/°C vs. ±100ppm/°C — substitute provides superior temperature stability

The CMF55523R00BEEB qualifies as a direct substitute because it maintains all critical electrical specifications while offering enhanced performance characteristics in power handling and thermal stability.

Parameter Comparison

Engineering Selection Recommendations

Both the RNF14BTD523R and CMF55523R00BEEB maintain Active product status and full ROHS3 compliance, ensuring long-term availability and regulatory alignment. The CMF55523R00BEEB is suitable for applications where the RNF14BTD523R is unavailable, provided that the circuit design accommodates the higher power rating and improved temperature coefficient. The substitute's enhanced thermal stability (±25ppm/°C) and extended operating temperature range (-55°C ~ 175°C) support applications with more demanding environmental specifications. Physical dimensions are comparable, with the substitute slightly smaller, permitting direct board-level substitution in most PCB layouts. Selection between these parts should be based on procurement availability, supply chain requirements, and application-specific thermal or stability demands.

Frequently Asked Questions (FAQ)

Q: Can the CMF55523R00BEEB replace the RNF14BTD523R in all applications?

A: Yes, the CMF55523R00BEEB qualifies as a direct substitute for the RNF14BTD523R. Both components share identical resistance (523 Ohms), tolerance (±0.1%), composition (Metal Film), and package type (Axial). The substitute offers upgraded specifications in power rating (0.5W vs. 0.25W) and temperature coefficient (±25ppm/°C vs. ±100ppm/°C), making it suitable for applications with equivalent or more stringent requirements.

Q: What are the physical compatibility considerations?

A: The CMF55523R00BEEB measures 0.090" Dia x 0.240" L (2.29mm x 6.10mm), compared to the RNF14BTD523R at 0.093" Dia x 0.250" L (2.35mm x 6.35mm). The substitute is marginally smaller in both diameter and length, permitting direct PCB substitution without layout modifications in standard axial resistor footprints.

Q: Are there compliance or certification differences?

A: Both parts maintain identical RoHS3 compliance status and REACH Unaffected designation. No compliance barriers exist for substitution. The CMF55523R00BEEB includes additional moisture-resistant features beyond the flame retardant coating present in the RNF14BTD523R.

Q: How do temperature coefficients affect substitution suitability?

A: The RNF14BTD523R exhibits a temperature coefficient of ±100ppm/°C, while the CMF55523R00BEEB provides ±25ppm/°C. The substitute's superior temperature stability ensures tighter resistance tolerance across the operating temperature range, benefiting precision applications. This represents an upgrade, not a limitation, for substitution purposes.

Q: What is the packaging difference between these parts?

A: The RNF14BTD523R is supplied in Tape & Reel (TR) packaging, while the CMF55523R00BEEB is supplied in Cut Tape (CT) packaging. Both formats are standard for axial resistor distribution and do not affect component functionality or board-level performance.