RNF14FAC182K Equivalent & Substitute Parts

Part Overview

The RNF14FAC182K is a 182 kOhms ±1% metal film axial resistor rated at 0.25W (1/4W) manufactured by Stackpole Electronics Inc. This component is designed for through-hole applications requiring precision resistance with flame retardant coating and safety features. The part maintains Active product status with full ROHS3 compliance and REACH unaffected certification. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are required due to inventory constraints, application upgrades, or design optimization needs.

Substiute Parts

RNF14FAC182K

Stackpole Electronics IncIn Stock: 864RNF14FAC182K Datasheet

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CMF55182K00FHEB

Vishay DaleIn Stock: 3510CMF55182K00FHEB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RNF14FAC182K is determined by the following critical parameters:

• Resistance Value: Must be 182 kOhms
• Tolerance: Must be ±1%
• Composition: Must be Metal Film
• Package Type: Must be Axial
• Temperature Coefficient: Must be ±50ppm/°C
• Compliance: Must maintain ROHS3 and REACH unaffected status

The CMF55182K00FHEB qualifies as a substitute based on matching all core electrical parameters. The primary difference is an increased power rating (0.5W vs 0.25W), which represents a design upgrade rather than a limitation. The operating temperature range extends to 175°C (versus 155°C), providing enhanced thermal performance. Both components share identical resistance, tolerance, composition, and temperature coefficient specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the RNF14FAC182K and CMF55182K00FHEB meet identical electrical and compliance requirements for 182 kOhms ±1% metal film axial resistor applications. Selection between these components should be based on:

Power Dissipation Requirements: The CMF55182K00FHEB provides doubled power handling capacity (0.5W vs 0.25W), making it suitable for applications with higher thermal stress or design margin requirements.

Thermal Environment: The CMF55182K00FHEB extends the maximum operating temperature to 175°C, compared to 155°C for the RNF14FAC182K, providing enhanced performance in elevated temperature environments.

Moisture Resistance: The CMF55182K00FHEB includes moisture resistant features, beneficial for applications exposed to humidity or condensation.

Physical Dimensions: Both components are mechanically compatible with axial through-hole PCB layouts. The CMF55182K00FHEB exhibits slightly reduced dimensions (0.090" diameter vs 0.093", 0.240" length vs 0.250"), which may provide minor board space advantages.

Regulatory Compliance: Both components maintain ROHS3 compliance and REACH unaffected status, meeting current environmental and safety standards.

Frequently Asked Questions (FAQ)

Q: Can the CMF55182K00FHEB directly replace the RNF14FAC182K in existing designs?

A: Yes. Both components share identical resistance value (182 kOhms), tolerance (±1%), composition (metal film), package type (axial), and temperature coefficient (±50ppm/°C). The CMF55182K00FHEB represents a design upgrade with increased power rating and extended operating temperature range.

Q: What are the key differences between these two resistors?

A: The primary differences are power rating (0.5W vs 0.25W), maximum operating temperature (175°C vs 155°C), physical dimensions (slightly smaller for CMF55182K00FHEB), and additional moisture resistant features in the substitute part. Electrical performance and tolerance specifications are identical.

Q: Are there any PCB layout considerations when substituting these parts?

A: Both components use axial through-hole packaging and are mechanically compatible. The CMF55182K00FHEB has marginally smaller dimensions, which may provide minor routing flexibility but does not create compatibility issues.

Q: Do both parts meet current regulatory requirements?

A: Yes. Both the RNF14FAC182K and CMF55182K00FHEB are ROHS3 compliant and REACH unaffected, meeting current environmental and safety standards.

Q: Which part should be selected for high-temperature applications?

A: The CMF55182K00FHEB is recommended for applications operating above 155°C, as it maintains specifications up to 175°C. For applications within the -55°C to 155°C range, either component is suitable.