RNF14FAD3K83 Equivalent & Substitute Parts

Part Overview

The RNF14FAD3K83 is a 3.83 kOhms ±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 tight tolerance specifications. The part is currently in active production status with 1154 units available in inventory. Substitute parts are identified to provide alternative sourcing options while maintaining electrical and mechanical compatibility within specified parameter ranges.

Substiute Parts

RNF14FAD3K83

Stackpole Electronics IncIn Stock: 1213RNF14FAD3K83 Datasheet

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CMF553K8300FHEB

Vishay DaleIn Stock: 8505CMF553K8300FHEB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF14FAD3K83 are qualified based on the following electrical and mechanical parameters:

Critical Parameters (Must Match):

• Resistance value: 3.83 kOhms
• Tolerance: ±1%
• Composition: Metal Film
• Package: Axial through-hole
• Termination count: 2
• RoHS compliance: ROHS3 Compliant

Allowable Parameter Variations:

• Power rating: May be equal or higher (0.25W minimum)
• Temperature coefficient: May be equal or lower in absolute value
• Operating temperature range: May be equal or extended
• Physical dimensions: Minor variations acceptable within axial package constraints
• Features: May include additional protective characteristics (moisture resistance)

The CMF553K8300FHEB qualifies as a substitute based on matching all critical parameters while offering enhanced specifications in power rating (0.5W vs 0.25W), temperature coefficient (±50ppm/°C vs ±100ppm/°C), and operating temperature range (-55°C ~ 175°C vs -55°C ~ 155°C).

Parameter Comparison

Engineering Selection Recommendations

Both the RNF14FAD3K83 and CMF553K8300FHEB maintain ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component manufacturing and distribution.

The CMF553K8300FHEB offers enhanced performance characteristics including higher power dissipation capability (0.5W vs 0.25W), improved temperature stability (±50ppm/°C vs ±100ppm/°C), and extended operating temperature range (-55°C ~ 175°C vs -55°C ~ 155°C). These specifications position the substitute as suitable for applications with more demanding thermal or stability requirements while maintaining identical resistance and tolerance values.

Physical dimensions are comparable between both parts, with the substitute exhibiting slightly reduced diameter and length. Both components feature axial through-hole construction compatible with standard PCB assembly processes.

Frequently Asked Questions (FAQ)

Q: Can CMF553K8300FHEB be used as a direct replacement for RNF14FAD3K83?

A: Yes. Both parts share identical resistance (3.83 kOhms), tolerance (±1%), composition (metal film), and axial package configuration. The substitute meets all critical electrical and mechanical parameters required for functional equivalence.

Q: What are the key differences between these parts?

A: The primary differences are power rating (0.5W vs 0.25W), temperature coefficient (±50ppm/°C vs ±100ppm/°C), maximum operating temperature (175°C vs 155°C), and physical dimensions. The CMF553K8300FHEB includes moisture resistance as an additional feature.

Q: Are there any compatibility concerns with PCB assembly?

A: Both parts use standard axial through-hole packaging. Physical dimensions are comparable (RNF14FAD3K83: 0.093" Dia x 0.250" L; CMF553K8300FHEB: 0.090" Dia x 0.240" L), presenting no assembly compatibility issues. Standard through-hole soldering processes apply to both components.

Q: Do both parts meet current regulatory requirements?

A: Yes. Both the RNF14FAD3K83 and CMF553K8300FHEB are ROHS3 compliant and REACH unaffected, meeting current environmental and safety regulations for electronic components.

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

A: The CMF553K8300FHEB supports operation to 175°C compared to 155°C for the RNF14FAD3K83, making it suitable for applications requiring extended temperature range operation.

Q: How do temperature coefficients affect circuit performance?

A: Temperature coefficient indicates resistance value drift with temperature change. The CMF553K8300FHEB exhibits ±50ppm/°C compared to ±100ppm/°C for the RNF14FAD3K83, providing superior stability across temperature variations. Selection depends on circuit tolerance requirements.