RNF14FTC88K7 Equivalent & Substitute Parts

Part Overview

The RNF14FTC88K7 is a 0.25W metal film axial resistor with 88.7 kOhms resistance and ±1% tolerance, manufactured by Stackpole Electronics Inc. This component is designed for through-hole applications requiring flame retardant coating and safety-rated construction. The part is currently active in production with 763 units in stock. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained within the allowed parameter ranges for this resistor category.

Substiute Parts

RNF14FTC88K7

Stackpole Electronics IncIn Stock: 859RNF14FTC88K7 Datasheet

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CMF5588K700FHEB

Vishay DaleIn Stock: 1689CMF5588K700FHEB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the RNF14FTC88K7 is determined by the following criteria:

• Resistance value must be 88.7 kOhms
• Tolerance must be ±1%
• Composition must be metal film
• Temperature coefficient must be ±50ppm/°C
• Package type must be axial through-hole
• RoHS3 compliance is required
• Flame retardant coating and safety features must be present

The CMF5588K700FHEB qualifies as a substitute because it maintains all critical electrical parameters while offering an upgraded power rating of 0.5W (1/2W) and an extended operating temperature range to 175°C. The axial package configuration remains compatible with existing PCB layouts designed for the RNF14FTC88K7.

Parameter Comparison

Engineering Selection Recommendations

The CMF5588K700FHEB is a direct electrical substitute for the RNF14FTC88K7. Both components maintain identical resistance, tolerance, temperature coefficient, and composition specifications. The substitute offers enhanced thermal performance with a 20°C higher maximum operating temperature (175°C vs 155°C) and increased power dissipation capability (0.5W vs 0.25W). Both parts are ROHS3 compliant and feature flame retardant coatings with safety construction. The CMF5588K700FHEB includes additional moisture resistance, providing enhanced environmental protection. Axial package compatibility ensures mechanical fit within existing through-hole PCB designs. Selection between these parts depends on application thermal requirements and power dissipation needs.

Frequently Asked Questions (FAQ)

Q: Can the CMF5588K700FHEB replace the RNF14FTC88K7 in existing designs?

A: Yes. Both components share identical electrical specifications (88.7 kOhms, ±1%, ±50ppm/°C) and axial package configuration. The substitute is mechanically and electrically compatible with PCB layouts designed for the RNF14FTC88K7.

Q: What is the difference in physical dimensions between these parts?

A: The RNF14FTC88K7 measures 0.093" diameter × 0.250" length (2.35mm × 6.35mm). The CMF5588K700FHEB measures 0.090" diameter × 0.240" length (2.29mm × 6.10mm). Both are axial through-hole components with compatible lead spacing for standard PCB hole patterns.

Q: Why does the substitute have a higher power rating?

A: The CMF5588K700FHEB is rated for 0.5W (1/2W) compared to the RNF14FTC88K7 at 0.25W (1/4W). This provides additional thermal margin and allows operation in higher power dissipation applications while maintaining the same resistance and tolerance specifications.

Q: Are both parts RoHS compliant?

A: Yes. Both the RNF14FTC88K7 and CMF5588K700FHEB are ROHS3 compliant and suitable for applications requiring RoHS certification.

Q: What is the temperature operating range difference?

A: The RNF14FTC88K7 operates from -55°C to 155°C. The CMF5588K700FHEB extends the upper limit to 175°C, providing 20°C additional thermal headroom for high-temperature applications.

Q: Does the substitute offer any additional features?

A: The CMF5588K700FHEB includes moisture resistance in addition to the flame retardant coating present in both parts. This provides enhanced environmental protection in humid or moisture-prone applications.