RNF14FTC2K43 Equivalent & Substitute Parts

Part Overview

The RNF14FTC2K43 is a 2.43 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 certification, designed for applications requiring precision resistive elements in standard axial package configurations. The part is currently active in production with 811 units in stock. Substitute parts are identified to address inventory availability, enhanced tolerance specifications, or increased power dissipation requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

RNF14FTC2K43

Stackpole Electronics IncIn Stock: 862RNF14FTC2K43 Datasheet

Current PartRFQ

RNF14BTC2K43

Stackpole Electronics IncIn Stock: 3080RNF14BTC2K43 Datasheet

UpgradeRFQ

CMF552K4300FHEB

Vishay DaleIn Stock: 1121CMF552K4300FHEB Datasheet

UpgradeRFQ

CMF502K4300FHEB

Vishay DaleIn Stock: 1721CMF502K4300FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for RNF14FTC2K43 are qualified based on the following criteria:

Electrical Parameters (Must Match):

• Resistance value: 2.43 kOhms
• Temperature coefficient: ±50ppm/°C
• Composition: Metal Film
• RoHS3 compliance

Mechanical Parameters (Must Match):

• Package type: Axial through-hole
• Number of terminations: 2

Allowable Variations:

• Tolerance: ±1% or tighter (±0.1% acceptable as upgrade)
• Power rating: Equal or greater than 0.25W
• Operating temperature range: Equal or extended range acceptable
• Packaging format: Tape & Reel (TR) or Cut Tape (CT) both acceptable

Three substitute parts meet these criteria with specific differentiation in tolerance and power rating specifications.

Parameter Comparison

Engineering Selection Recommendations

RNF14BTC2K43 (Stackpole Electronics Inc) Select this substitute when tighter tolerance specification is required. This part maintains identical power rating, operating temperature range, and physical dimensions as the primary part while providing ±0.1% tolerance versus ±1%. All compliance certifications (ROHS3, REACH Unaffected, EAR99) are equivalent. Higher inventory availability (3034 units) supports procurement flexibility.

CMF502K4300FHEB (Vishay Dale) Select this substitute as the manufacturer-recommended equivalent. This part maintains the 0.25W power rating and ±1% tolerance specification while extending the operating temperature range to -55°C ~ 175°C. Adds moisture-resistant feature. Identical physical dimensions and axial package configuration. ROHS3 compliant with equivalent regulatory status.

CMF552K4300FHEB (Vishay Dale) Select this substitute when increased power dissipation capability is required. This part provides 0.5W (1/2W) power rating, double that of the primary part, while maintaining 2.43 kOhms resistance and ±1% tolerance. Extended operating temperature range (-55°C ~ 175°C) and moisture-resistant feature. Axial package configuration with equivalent compliance certifications. Slightly reduced physical dimensions (0.090" Dia x 0.240" L versus 0.093" Dia x 0.250" L) remain compatible with standard axial footprints.

Frequently Asked Questions (FAQ)

Q: Can RNF14BTC2K43 be used as a direct replacement for RNF14FTC2K43? A: Yes. RNF14BTC2K43 is a direct substitute with identical electrical specifications (2.43 kOhms, 0.25W, ±50ppm/°C) and physical dimensions. The tighter tolerance (±0.1% versus ±1%) represents an upgrade in precision. Both parts are Stackpole Electronics Inc products with equivalent compliance certifications.

Q: What is the difference between CMF502K4300FHEB and CMF552K4300FHEB? A: The primary difference is power rating. CMF502K4300FHEB is rated at 0.25W (1/4W), matching the original part specification. CMF552K4300FHEB is rated at 0.5W (1/2W), providing double the power dissipation capability. Both maintain 2.43 kOhms resistance and ±1% tolerance. Physical dimensions differ slightly but remain compatible with standard axial mounting.

Q: Are all substitute parts ROHS3 compliant? A: Yes. RNF14FTC2K43, RNF14BTC2K43, CMF502K4300FHEB, and CMF552K4300FHEB are all ROHS3 compliant. All parts are REACH Unaffected and classified as EAR99 for export control purposes.

Q: Can CMF552K4300FHEB be used in applications designed for 0.25W resistors? A: Yes. CMF552K4300FHEB with 0.5W rating can be used in circuits designed for 0.25W resistors. The higher power rating provides additional thermal margin and does not affect electrical performance. Physical dimensions are slightly smaller (0.090" Dia x 0.240" L) but remain compatible with standard axial footprints.

Q: What is the operating temperature difference between Stackpole and Vishay Dale parts? A: Stackpole RNF series parts (RNF14FTC2K43 and RNF14BTC2K43) operate from -55°C to 155°C. Vishay Dale CMF series parts (CMF502K4300FHEB and CMF552K4300FHEB) operate from -55°C to 175°C, providing 20°C additional high-temperature capability.

Q: Do the Vishay Dale parts include moisture resistance? A: Yes. CMF502K4300FHEB and CMF552K4300FHEB both feature moisture-resistant coating in addition to flame retardant coating. Stackpole RNF series parts feature flame retardant coating only.

Q: What packaging formats are available? A: RNF14FTC2K43 is supplied in Tape & Reel (TR) format. RNF14BTC2K43, CMF502K4300FHEB, and CMF552K4300FHEB are supplied in Cut Tape (CT) format. Both formats are suitable for automated assembly processes.