RNF14FTD1K02 Equivalent & Substitute Parts

Part Overview

The RNF14FTD1K02 is a 1.02 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-rated construction, designed for applications requiring precision resistance values in compact form factors. The part is currently active in production with 906 units in stock. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained while potentially offering enhanced specifications or alternative sourcing options.

Substiute Parts

RNF14FTD1K02

Stackpole Electronics IncIn Stock: 984RNF14FTD1K02 Datasheet

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CMF551K0200FHEB

Vishay DaleIn Stock: 1062CMF551K0200FHEB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RNF14FTD1K02 is determined by the following critical parameters:

Mandatory Matching Criteria:

• Resistance value: 1.02 kOhms
• Tolerance: ±1%
• Composition: Metal Film
• Package: Axial through-hole
• Termination count: 2

Allowable Variations:

• Power rating: Equal to or greater than 0.25W
• Operating temperature range: Equal to or exceeding -55°C ~ 155°C
• Temperature coefficient: Equal to or lower absolute value
• Physical dimensions: Minor variations acceptable within axial package constraints
• Packaging format: Tape & Reel (TR) or Cut Tape (CT) formats are interchangeable for component selection

The CMF551K0200FHEB qualifies as a substitute because it maintains all mandatory matching criteria while offering enhanced specifications in power rating (0.5W vs 0.25W), operating temperature range (-55°C ~ 175°C), and temperature coefficient (±50ppm/°C vs ±100ppm/°C).

Parameter Comparison

Engineering Selection Recommendations

Both the RNF14FTD1K02 and CMF551K0200FHEB are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component deployment. The CMF551K0200FHEB offers enhanced thermal performance through a lower temperature coefficient (±50ppm/°C) and extended operating temperature range to 175°C, making it suitable for applications with stricter tolerance requirements or elevated ambient conditions. The increased power rating (0.5W) provides additional thermal margin in current-limited applications. Both components maintain identical resistance and tolerance specifications, ensuring direct functional equivalence in circuit applications. Selection between these parts should be based on specific thermal and environmental requirements of the target application, with the CMF551K0200FHEB preferred for demanding thermal environments or precision-critical circuits.

Frequently Asked Questions (FAQ)

Q: Can the CMF551K0200FHEB directly replace the RNF14FTD1K02 in existing designs?

A: Yes. Both components share identical resistance (1.02 kOhms), tolerance (±1%), composition (metal film), and axial package configuration. The substitute offers equal or superior performance across all specified parameters.

Q: What is the significance of the different power ratings (0.25W vs 0.5W)?

A: Power rating indicates the maximum continuous power dissipation capability. The CMF551K0200FHEB's 0.5W rating provides greater thermal headroom and is suitable for applications where the RNF14FTD1K02's 0.25W rating may approach its thermal limits. In applications where power dissipation remains below 0.25W, both ratings are functionally equivalent.

Q: How do the temperature coefficients affect circuit performance?

A: Temperature coefficient (±100ppm/°C vs ±50ppm/°C) specifies resistance value drift per degree Celsius change. The CMF551K0200FHEB's lower coefficient indicates superior stability across temperature variations, beneficial for precision analog circuits, measurement instrumentation, and temperature-sensitive applications.

Q: Are the physical dimensions compatible for PCB layout?

A: Both components use axial package configuration. The RNF14FTD1K02 measures 0.093" Dia x 0.250" L (2.35mm x 6.35mm), while the CMF551K0200FHEB measures 0.090" Dia x 0.240" L (2.29mm x 6.10mm). These minor dimensional differences are within standard axial component tolerances and do not affect PCB footprint compatibility.

Q: What packaging formats are available for these parts?

A: The RNF14FTD1K02 is supplied in Tape & Reel (TR) format, while the CMF551K0200FHEB is available in Cut Tape (CT) format. Both formats contain identical components and are suitable for component selection; packaging format selection depends on assembly process requirements and volume considerations.

Q: Do both parts meet current compliance standards?

A: Yes. Both the RNF14FTD1K02 and CMF551K0200FHEB are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component use in regulated markets.