RNF14FTC15K4 Equivalent & Substitute Parts

Part Overview

The RNF14FTC15K4 is a 15.4 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 construction, designed for applications requiring precision resistance values with reliable performance across industrial temperature ranges. The part is currently Active in product status with 840 pieces in stock inventory.

Substitute parts are identified to address supply chain continuity, packaging format preferences, or enhanced performance specifications while maintaining electrical and mechanical compatibility within the allowed parameter tolerances for this resistor category.

Substiute Parts

RNF14FTC15K4

Stackpole Electronics IncIn Stock: 885RNF14FTC15K4 Datasheet

Current PartRFQ

CMF5515K400FHEB

Vishay DaleIn Stock: 6818CMF5515K400FHEB Datasheet

UpgradeRFQ

CMF5015K400FHEB

Vishay DaleIn Stock: 1790CMF5015K400FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF14FTC15K4 are qualified based on the following electrical and mechanical parameters:

Critical Parameters (Must Match):

• Resistance value: 15.4 kOhms
• Tolerance: ±1%
• Composition: Metal Film
• Package type: Axial through-hole
• Temperature coefficient: ±50ppm/°C
• RoHS compliance: ROHS3 Compliant

Allowable Variations:

• Power rating: May be equal or higher (0.25W or greater)
• Operating temperature range: May be equal or extended
• Physical dimensions: May vary within axial package constraints
• Packaging format: Tape & Reel (TR) or Cut Tape (CT) formats are interchangeable for component selection
• Additional features: Enhanced moisture resistance is permissible

Two substitute parts meet these criteria: CMF5515K400FHEB (0.5W upgrade) and CMF5015K400FHEB (0.25W equivalent with enhanced specifications).

Parameter Comparison

Engineering Selection Recommendations

CMF5015K400FHEB (Manufacturer Recommended): This substitute provides direct electrical equivalence to the RNF14FTC15K4 with identical power rating (0.25W), resistance, and tolerance specifications. The CMF50 series offers extended operating temperature range (-55°C ~ 175°C) and enhanced moisture resistance. This part is recommended for direct replacement in existing designs without circuit modification. Smaller physical dimensions may provide layout advantages in space-constrained applications.

CMF5515K400FHEB (Upgrade Option): This substitute provides increased power dissipation capability (0.5W versus 0.25W) while maintaining all other electrical parameters. The CMF55 series is suitable for applications where thermal margin or higher power handling is beneficial. Extended operating temperature range and moisture resistance are included. Physical dimensions are comparable to the main part. This option provides enhanced reliability in demanding thermal environments.

Both substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory continuity. Selection between CMF5015K400FHEB and CMF5515K400FHEB depends on circuit power dissipation requirements and available board space.

Frequently Asked Questions (FAQ)

Q: Can CMF5515K400FHEB replace RNF14FTC15K4 in any application? A: Yes. The CMF5515K400FHEB provides higher power rating (0.5W) while maintaining identical resistance, tolerance, and temperature coefficient. Higher power rating does not create incompatibility; it provides additional thermal margin. Physical dimensions are similar and compatible with standard axial component footprints.

Q: What is the difference between CMF5015K400FHEB and CMF5515K400FHEB? A: Both parts have identical electrical specifications (15.4 kOhms ±1%, ±50ppm/°C). The primary difference is power rating: CMF5015K400FHEB is rated 0.25W (matching the original), while CMF5515K400FHEB is rated 0.5W. CMF5515K400FHEB is physically larger and provides greater thermal dissipation capability.

Q: Are packaging format differences (Tape & Reel vs. Cut Tape) significant for component selection? A: Packaging format affects supply chain and assembly processes but does not impact electrical or mechanical compatibility. Both Tape & Reel (TR) and Cut Tape (CT) formats contain identical components. Selection depends on manufacturing equipment and volume requirements.

Q: Do the substitute parts have the same temperature coefficient? A: Yes. All three parts (RNF14FTC15K4, CMF5515K400FHEB, and CMF5015K400FHEB) have identical temperature coefficient of ±50ppm/°C, ensuring consistent performance across temperature variations.

Q: Are there any compliance or certification differences? A: No. All three parts are ROHS3 compliant and REACH unaffected. Regulatory status is identical across all options.

Q: Can CMF5015K400FHEB be used in high-temperature applications? A: CMF5015K400FHEB operates to 175°C, exceeding the RNF14FTC15K4 maximum of 155°C. This extended range provides compatibility with higher-temperature circuit environments.