RNF14FAD42K2 Equivalent & Substitute Parts

Part Overview

The RNF14FAD42K2 is a 42.2 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 in compact form factors. The part maintains active product status with 729 units in current inventory. Substitute parts are identified to address extended operating temperature ranges, increased power dissipation requirements, or alternative sourcing needs while maintaining electrical and mechanical compatibility.

Substiute Parts

RNF14FAD42K2

Stackpole Electronics IncIn Stock: 763RNF14FAD42K2 Datasheet

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CMF5542K200FHEB

Vishay DaleIn Stock: 2448CMF5542K200FHEB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RNF14FAD42K2 is determined by the following critical parameters:

• Resistance Value: Must be 42.2 kOhms
• Tolerance: Must be ±1% or tighter
• Composition: Must be metal film
• Package Type: Must be axial through-hole
• Compliance: Must maintain ROHS3 compliance and REACH unaffected status

The CMF5542K200FHEB qualifies as a substitute based on matching resistance value, tolerance, composition, and package type. This substitute provides enhanced specifications including increased power rating (0.5W vs. 0.25W), extended maximum operating temperature (175°C vs. 155°C), improved temperature coefficient (±50ppm/°C vs. ±100ppm/°C), and moisture-resistant features while maintaining full regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

Both the RNF14FAD42K2 and CMF5542K200FHEB maintain active product status and full regulatory compliance under ROHS3 and REACH standards. Selection between these components should be based on application-specific requirements:

The RNF14FAD42K2 is suitable for standard applications operating within -55°C to 155°C with power dissipation not exceeding 0.25W.

The CMF5542K200FHEB is appropriate for applications requiring extended temperature operation up to 175°C, higher power dissipation capacity (0.5W), improved temperature stability (±50ppm/°C), or moisture-resistant performance. The substitute provides enhanced reliability margins in thermally demanding or humid environments while maintaining identical electrical characteristics for the specified 42.2 kOhms ±1% resistance value.

Both components are axial through-hole metal film resistors with flame retardant and safety features, ensuring direct functional compatibility in circuit designs.

Frequently Asked Questions (FAQ)

Q: Can CMF5542K200FHEB replace RNF14FAD42K2 in any application?

A: Yes, the CMF5542K200FHEB is electrically and mechanically compatible as a direct substitute. Both components provide identical 42.2 kOhms ±1% resistance values in axial metal film construction. The substitute offers enhanced specifications including higher power rating and extended temperature range, making it suitable for all applications where the main part is specified.

Q: What are the physical dimension differences between these parts?

A: The RNF14FAD42K2 measures 0.093" diameter × 0.250" length (2.35mm × 6.35mm). The CMF5542K200FHEB measures 0.090" diameter × 0.240" length (2.29mm × 6.10mm). Both are axial through-hole components with 2 terminations. The dimensional difference is minimal and does not affect PCB layout compatibility for standard through-hole mounting.

Q: Are there compliance or certification differences?

A: Both components maintain identical compliance status: ROHS3 compliant and REACH unaffected. No compliance trade-offs exist between the main part and substitute.

Q: When should I select the substitute over the main part?

A: Select the CMF5542K200FHEB when applications require operating temperatures above 155°C, power dissipation exceeding 0.25W, improved temperature coefficient stability (±50ppm/°C vs. ±100ppm/°C), or moisture-resistant performance. For standard applications within the RNF14FAD42K2 specifications, either component is acceptable based on availability and sourcing preferences.

Q: Are packaging formats interchangeable?

A: The RNF14FAD42K2 is supplied in Tape & Box (TB) packaging, while the CMF5542K200FHEB is supplied in Cut Tape (CT) packaging. Both formats contain identical components; packaging differences affect only handling, storage, and procurement logistics, not component performance or compatibility.