RNF14FTC3K01 Equivalent & Substitute Parts

Part Overview

The RNF14FTC3K01 is a 3.01 kOhms ±1% 0.25W axial through-hole metal film resistor manufactured by Stackpole Electronics Inc. This component features flame retardant coating and safety construction, designed for applications requiring precision resistance values with tight tolerance specifications. The part is currently in active production status with 762 units in stock inventory.

Substitute parts are identified when equivalent electrical performance can be maintained while accommodating design flexibility, inventory availability, or specific application requirements. Alternatives must match the core electrical parameters: resistance value, tolerance, power rating, and composition type.

Substiute Parts

RNF14FTC3K01

Stackpole Electronics IncIn Stock: 798RNF14FTC3K01 Datasheet

Current PartRFQ

CMF553K0100FHEB

Vishay DaleIn Stock: 2310CMF553K0100FHEB Datasheet

UpgradeRFQ

CMF503K0100FHEB

Vishay DaleIn Stock: 1810CMF503K0100FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF14FTC3K01 are qualified based on the following electrical and mechanical criteria:

Primary Matching Criteria:

• Resistance value: 3.01 kOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Composition: Metal Film (exact match required)
• Package: Axial through-hole (exact match required)
• Temperature Coefficient: ±50ppm/°C (exact match required)

Allowable Variation Parameters:

• Power rating: Equal or greater than 0.25W
• Operating temperature range: Equal or greater than -55°C ~ 155°C
• Physical dimensions: Variation permitted within axial package constraints
• Packaging format: Tape & Reel or Cut Tape acceptable
• Manufacturer: Different manufacturers permitted if all electrical specifications match

Two substitute parts meet these criteria: CMF503K0100FHEB (manufacturer-recommended direct equivalent) and CMF553K0100FHEB (upgraded power rating variant).

Parameter Comparison

Engineering Selection Recommendations

CMF503K0100FHEB (Manufacturer-Recommended Substitute): This part is the direct equivalent from Vishay Dale, matching all electrical specifications of the RNF14FTC3K01 at identical power rating (0.25W). The CMF503K0100FHEB provides extended operating temperature range (-55°C ~ 175°C versus -55°C ~ 155°C) and includes moisture-resistant construction. Physical dimensions are smaller (0.065" Dia x 0.150" L), which may provide layout advantages in space-constrained applications. Both parts maintain ROHS3 compliance and REACH unaffected status. This substitute is appropriate for direct replacement in existing designs.

CMF553K0100FHEB (Upgraded Power Rating Variant): This Vishay Dale part maintains all electrical specifications while providing doubled power dissipation capability (0.5W versus 0.25W). The CMF553K0100FHEB is suitable for applications where thermal margin or power derating requirements necessitate higher power rating. Operating temperature range extends to 175°C. Physical dimensions (0.090" Dia x 0.240" L) remain within typical axial package constraints. This substitute is appropriate when design specifications permit or require increased power handling capacity.

Both substitute parts are active production items with superior inventory availability compared to the main part.

Frequently Asked Questions (FAQ)

Q: Can CMF503K0100FHEB be used as a direct replacement for RNF14FTC3K01? A: Yes. The CMF503K0100FHEB matches all critical electrical parameters: 3.01 kOhms resistance, ±1% tolerance, 0.25W power rating, metal film composition, and ±50ppm/°C temperature coefficient. The extended operating temperature range (175°C maximum) provides additional margin. Physical dimensions differ slightly but remain within standard axial package specifications.

Q: What is the difference between CMF503K0100FHEB and CMF553K0100FHEB? A: The primary difference is power rating. CMF503K0100FHEB is rated 0.25W (1/4W), matching the original part. CMF553K0100FHEB is rated 0.5W (1/2W), providing doubled power dissipation capability. All other electrical specifications are identical. Physical dimensions vary slightly due to the higher power rating.

Q: Are there packaging format differences between these parts? A: Yes. The RNF14FTC3K01 is supplied in Tape & Reel (TR) format. Both Vishay Dale substitutes (CMF503K0100FHEB and CMF553K0100FHEB) are supplied in Cut Tape (CT) format. Both packaging formats are standard for through-hole axial resistors and do not affect electrical performance or board-level compatibility.

Q: Do all parts meet RoHS and REACH compliance requirements? A: Yes. The RNF14FTC3K01, CMF503K0100FHEB, and CMF553K0100FHEB are all ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.

Q: Which substitute should be selected for new designs? A: Selection depends on application requirements. For direct replacement with identical specifications, use CMF503K0100FHEB. For applications requiring higher power dissipation or thermal margin, use CMF553K0100FHEB. Both parts are active production items with established supply chains.