RNF14FAC4K87 Equivalent & Substitute Parts

Part Overview

The RNF14FAC4K87 is a 4.87 kOhms ±1% 0.25W axial through-hole resistor manufactured by Stackpole Electronics Inc. This metal film resistor features flame retardant coating and safety construction, designed for applications requiring precision resistance values with tight tolerance specifications. The part is currently active in production with 1111 pieces available in inventory. Substitute parts are necessary to address supply chain continuity, packaging preferences, or performance envelope requirements in specific application contexts.

Substiute Parts

RNF14FAC4K87

Stackpole Electronics IncIn Stock: 1129RNF14FAC4K87 Datasheet

Current PartRFQ

CMF554K8700FHEB

Vishay DaleIn Stock: 2153CMF554K8700FHEB Datasheet

UpgradeRFQ

CMF504K8700FHEB

Vishay DaleIn Stock: 5078CMF504K8700FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RNF14FAC4K87 is determined by the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 4.87 kOhms
• Tolerance: ±1%
• Composition: Metal Film
• Package type: Axial
• Temperature coefficient: ±50ppm/°C

Allowable Variation Parameters:

• Power rating: Equal or greater than 0.25W
• Operating temperature range: Equal or greater than -55°C ~ 155°C
• Physical dimensions: Axial package form factor
• Packaging format: Tape & Box or Cut Tape acceptable

The two substitute parts listed (CMF504K8700FHEB and CMF554K8700FHEB) maintain all mandatory matching parameters while offering enhanced operating temperature ranges and alternative power ratings suitable for direct substitution in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

CMF504K8700FHEB (Manufacturer Recommended Substitute): This part maintains identical electrical specifications to the RNF14FAC4K87 while offering an extended operating temperature range to 175°C and moisture-resistant construction. Both parts are ROHS3 compliant and carry active product status. The CMF504K8700FHEB is suitable for direct substitution in applications where the original part is unavailable, with higher inventory availability (5018 units).

CMF554K8700FHEB (Upgrade Substitute): This part provides a higher power rating (0.5W versus 0.25W) while maintaining all other electrical parameters. The extended operating temperature range to 175°C and moisture-resistant features provide enhanced performance margins. This option is appropriate for applications where thermal or power dissipation headroom is beneficial, though it requires verification that the larger physical dimensions (0.090" Dia x 0.240" L) accommodate the circuit board layout.

Both substitute parts are ROHS3 compliant, carry active product status, and are manufactured by Vishay Dale, a recognized supplier in the resistor component category.

Frequently Asked Questions (FAQ)

Q: Can CMF504K8700FHEB replace RNF14FAC4K87 in all applications? A: Yes. The CMF504K8700FHEB maintains identical resistance, tolerance, power rating, and temperature coefficient specifications. The extended operating temperature range (-55°C ~ 175°C versus -55°C ~ 155°C) and moisture-resistant construction provide equivalent or superior performance in standard applications.

Q: What is the difference between the two substitute parts? A: The primary difference is power rating: CMF504K8700FHEB is rated at 0.25W (matching the original), while CMF554K8700FHEB is rated at 0.5W. Both maintain identical resistance and tolerance values. The CMF554K8700FHEB offers greater thermal dissipation capability and is suitable for applications requiring higher power margins.

Q: Are there physical dimension differences that affect PCB layout? A: Yes. The RNF14FAC4K87 measures 0.093" Dia x 0.250" L. The CMF504K8700FHEB measures 0.065" Dia x 0.150" L (smaller), and the CMF554K8700FHEB measures 0.090" Dia x 0.240" L (similar to original). Verify that the selected substitute fits the intended mounting holes and clearance requirements.

Q: Do all parts meet the same compliance standards? A: Yes. All three parts are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes. All carry HTSUS code 8533.21.0090.

Q: What packaging formats are available? A: The RNF14FAC4K87 is supplied in Tape & Box (TB) format. Both substitute parts are supplied in Cut Tape (CT) format. Verify that your procurement and assembly processes accommodate the Cut Tape packaging.