RNF14FAD1K02 Equivalent & Substitute Parts

Part Overview

The RNF14FAD1K02 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 is designed for general-purpose applications requiring precision resistance with flame retardant coating and safety features. The part maintains Active product status with 711 units in current inventory. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for this resistor category.

Substiute Parts

RNF14FAD1K02

Stackpole Electronics IncIn Stock: 787RNF14FAD1K02 Datasheet

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CMF551K0200FHEB

Vishay DaleIn Stock: 1062CMF551K0200FHEB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the RNF14FAD1K02 is determined by the following critical parameters:

• Resistance Value: Must be 1.02 kOhms
• Tolerance: Must be ±1%
• Composition: Must be Metal Film
• Package Type: Must be Axial (through-hole)
• Regulatory Compliance: Must maintain ROHS3 compliance

The CMF551K0200FHEB qualifies as a substitute because it maintains identical resistance value, tolerance, composition, and axial package configuration. The substitute part features an upgraded power rating (0.5W vs. 0.25W), improved temperature coefficient (±50ppm/°C vs. ±100ppm/°C), extended operating temperature range (-55°C ~ 175°C vs. -55°C ~ 155°C), and additional moisture resistance. These characteristics represent performance enhancements rather than deviations from the core electrical specification.

Parameter Comparison

Engineering Selection Recommendations

Both the RNF14FAD1K02 and CMF551K0200FHEB maintain Active product status and full ROHS3 compliance. The CMF551K0200FHEB provides enhanced specifications across multiple parameters: doubled power dissipation capability (0.5W vs. 0.25W), superior temperature stability (±50ppm/°C vs. ±100ppm/°C), extended upper operating temperature limit (175°C vs. 155°C), and moisture resistance. These upgrades do not compromise compatibility with applications designed for the RNF14FAD1K02 and may provide improved reliability margins in demanding environments. Selection between these parts should be based on application power dissipation requirements, thermal environment, and long-term stability needs.

Frequently Asked Questions (FAQ)

Q: Can the CMF551K0200FHEB directly replace the RNF14FAD1K02 in existing designs?

A: Yes. Both parts share identical resistance value (1.02 kOhms), tolerance (±1%), composition (metal film), and axial package configuration. The substitute part's higher power rating and improved temperature coefficient do not create incompatibility with circuits designed for the original part.

Q: What is the significance of the power rating difference between these parts?

A: The RNF14FAD1K02 is rated at 0.25W while the CMF551K0200FHEB is rated at 0.5W. This means the substitute can safely dissipate twice the power without exceeding temperature limits. Applications requiring only 0.25W operation will function identically with either part; applications approaching or exceeding 0.25W dissipation benefit from the substitute's higher rating.

Q: How do the temperature coefficients affect circuit performance?

A: The RNF14FAD1K02 has a temperature coefficient of ±100ppm/°C while the CMF551K0200FHEB has ±50ppm/°C. Lower temperature coefficient means the resistance value changes less with temperature variations. The substitute provides superior stability across the operating temperature range, particularly beneficial in precision analog circuits or wide-temperature applications.

Q: Are there physical dimension differences between these parts?

A: Both parts use axial package configuration. The RNF14FAD1K02 measures 0.093" diameter × 0.250" length (2.35mm × 6.35mm), while the CMF551K0200FHEB measures 0.090" diameter × 0.240" length (2.29mm × 6.10mm). These minor dimensional variations are within typical PCB layout tolerances for through-hole axial components.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the RNF14FAD1K02 and CMF551K0200FHEB are ROHS3 compliant and REACH unaffected, meeting current environmental and hazardous substance regulations.