RNF14FTD28K7 Equivalent & Substitute Parts

Part Overview

The RNF14FTD28K7 is a 28.7 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 is currently in active production status with 982 units in stock inventory.

Substitute parts are identified to address specific application requirements such as increased power dissipation capability, improved temperature stability, or alternative packaging formats while maintaining electrical equivalence in resistance value and tolerance.

Substiute Parts

RNF14FTD28K7

Stackpole Electronics IncIn Stock: 1033RNF14FTD28K7 Datasheet

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CMF5528K700FHEB

Vishay DaleIn Stock: 1755CMF5528K700FHEB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RNF14FTD28K7 is determined by the following critical parameters:

• Resistance Value: Must be 28.7 kOhms
• Tolerance: Must be ±1% or tighter
• Composition: Metal film construction required
• Package Type: Axial through-hole configuration required
• Compliance: ROHS3 compliance and REACH unaffected status required

The identified substitute CMF5528K700FHEB meets all mandatory electrical equivalence criteria. The primary difference is an increased power rating (0.5W vs. 0.25W), which represents an upgrade capability rather than a limitation. This upgrade allows the substitute to operate in applications with higher thermal dissipation requirements while maintaining identical resistance and tolerance specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the RNF14FTD28K7 and CMF5528K700FHEB are active production components with full ROHS3 compliance and REACH unaffected status, meeting regulatory requirements for industrial and commercial applications.

The RNF14FTD28K7 is the primary selection for applications with standard power dissipation requirements and space constraints where the 0.25W rating is sufficient.

The CMF5528K700FHEB serves as a direct substitute when applications require increased power handling capability (0.5W rating), improved temperature stability (±50ppm/°C vs. ±100ppm/°C), or extended upper operating temperature range (175°C vs. 155°C). The addition of moisture-resistant properties in the substitute provides enhanced environmental protection in humid or corrosive conditions.

Both components maintain identical electrical characteristics in resistance value and tolerance, ensuring functional equivalence in circuit operation.

Frequently Asked Questions (FAQ)

Q: Can CMF5528K700FHEB replace RNF14FTD28K7 in existing designs?

A: Yes. Both components share identical resistance (28.7 kOhms) and tolerance (±1%) specifications. The substitute features a higher power rating (0.5W vs. 0.25W), which is compatible with applications designed for the original 0.25W component. The substitute will not cause circuit malfunction due to its upgraded specifications.

Q: What is the primary difference between these two resistors?

A: The main difference is power rating. The CMF5528K700FHEB is rated at 0.5W compared to the RNF14FTD28K7 at 0.25W. The substitute also offers improved temperature coefficient (±50ppm/°C vs. ±100ppm/°C) and extended operating temperature range (-55°C to 175°C vs. -55°C to 155°C).

Q: Are there packaging differences?

A: Yes. The RNF14FTD28K7 is supplied in Tape & Reel (TR) format, while the CMF5528K700FHEB is supplied in Cut Tape (CT) format. Both use axial through-hole package configuration with compatible lead spacing and mounting characteristics.

Q: Do both parts meet compliance requirements?

A: Yes. Both components are ROHS3 compliant and REACH unaffected, meeting regulatory standards for industrial and commercial electronics applications.

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

A: The CMF5528K700FHEB supports operation up to 175°C, compared to 155°C for the RNF14FTD28K7. For applications requiring sustained operation above 155°C, the substitute is the appropriate selection.