RNF14FTC24K3 Equivalent & Substitute Parts

Part Overview

The RNF14FTC24K3 is a 24.3 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 with reliable performance across industrial temperature ranges. The part is currently Active in product status with 944 units in stock. Equivalent and substitute parts are identified to support procurement flexibility, design optimization, and supply chain continuity.

Substiute Parts

RNF14FTC24K3

Stackpole Electronics IncIn Stock: 1014RNF14FTC24K3 Datasheet

Current PartRFQ

CMF5524K300FHEB

Vishay DaleIn Stock: 8316CMF5524K300FHEB Datasheet

UpgradeRFQ

CMF5024K300FHEB

Vishay DaleIn Stock: 2502CMF5024K300FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF14FTC24K3 are qualified based on the following electrical and mechanical parameters:

Critical Parameters (Must Match):

• Resistance value: 24.3 kOhms
• Tolerance: ±1%
• Composition: Metal Film
• Package type: Axial through-hole
• Temperature coefficient: ±50ppm/°C

Allowable Variations:

• Power rating: May be equal or higher than 0.25W
• Operating temperature range: May be equal or extended
• Physical dimensions: May vary within axial package constraints
• Packaging format: Cut Tape (CT) acceptable as alternative to Tape & Reel (TR)

Two substitute parts meet these criteria: CMF5024K300FHEB (manufacturer-recommended direct equivalent) and CMF5524K300FHEB (upgraded power rating variant).

Parameter Comparison

Engineering Selection Recommendations

CMF5024K300FHEB (Manufacturer-Recommended Equivalent): This part is the direct functional equivalent to RNF14FTC24K3, matching all critical electrical parameters including resistance, tolerance, power rating, and temperature coefficient. The extended operating temperature range (-55°C ~ 175°C versus -55°C ~ 155°C) provides additional thermal margin. Physical dimensions are smaller, which may require PCB layout verification. Both parts are ROHS3 compliant and Active in product status. This substitute is suitable for direct replacement in applications where the original specification is maintained.

CMF5524K300FHEB (Upgraded Power Rating): This part maintains all critical electrical parameters while providing double the power rating (0.5W versus 0.25W). The extended operating temperature range and moisture-resistant features offer enhanced reliability margins. Slightly larger physical dimensions require PCB layout confirmation. This substitute is appropriate for applications where increased thermal headroom or enhanced environmental protection is beneficial, or where component consolidation across multiple power ratings is desired.

Frequently Asked Questions (FAQ)

Q: Can CMF5024K300FHEB be used as a direct drop-in replacement for RNF14FTC24K3? A: CMF5024K300FHEB is electrically equivalent and functionally compatible. Physical dimensions differ (0.065" Dia x 0.150" L versus 0.093" Dia x 0.250" L), requiring PCB layout verification to confirm lead spacing and component clearance compatibility.

Q: What is the difference between CMF5024K300FHEB and CMF5524K300FHEB? A: Both parts share identical resistance, tolerance, and temperature coefficient specifications. CMF5524K300FHEB provides double the power rating (0.5W versus 0.25W) and slightly larger physical dimensions (0.090" Dia x 0.240" L). Selection depends on thermal requirements and available PCB space.

Q: Are all substitute parts RoHS3 compliant? A: Yes. RNF14FTC24K3, CMF5024K300FHEB, and CMF5524K300FHEB are all ROHS3 compliant.

Q: Does packaging format affect electrical performance? A: No. Tape & Reel (TR) and Cut Tape (CT) packaging formats do not affect electrical characteristics. Selection is based on procurement and assembly process requirements.

Q: What is the temperature coefficient significance? A: All three parts share ±50ppm/°C temperature coefficient, ensuring consistent resistance stability across temperature variations. This parameter is critical for precision applications and is maintained across all substitutes.

Q: Can CMF5524K300FHEB be used in applications designed for 0.25W power rating? A: Yes. The higher power rating (0.5W) is a non-limiting upgrade. The component will operate safely at lower power levels. Verify physical dimensions fit the PCB layout.