RNF14FTC7K15 Equivalent & Substitute Parts

Part Overview

The RNF14FTC7K15 is a 7.15 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 tight tolerance specifications. The part is currently active in production with 872 units in stock. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design optimization across compatible applications.

Substiute Parts

RNF14FTC7K15

Stackpole Electronics IncIn Stock: 931RNF14FTC7K15 Datasheet

Current PartRFQ

CMF557K1500FHEB

Vishay DaleIn Stock: 3482CMF557K1500FHEB Datasheet

UpgradeRFQ

CMF507K1500FHEB

Vishay DaleIn Stock: 2665CMF507K1500FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF14FTC7K15 are qualified based on the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Identical resistance value: 7.15 kOhms
• Matching tolerance: ±1%
• Equivalent or superior power rating: 0.25W minimum
• Same composition: Metal Film
• Identical package type: Axial through-hole
• Matching temperature coefficient: ±50ppm/°C
• Compatible operating temperature range: minimum -55°C ~ 155°C
• Equivalent or enhanced features: Flame retardant coating and safety construction
• Regulatory compliance: ROHS3 Compliant

Two substitute parts meet these criteria:

CMF557K1500FHEB (Upgrade Option): Exceeds base specifications with 0.5W (1/2W) power rating and extended operating temperature to 175°C, while maintaining all electrical parameters and adding moisture resistance.

CMF507K1500FHEB (Direct Equivalent): Matches the 0.25W power rating and all electrical specifications of the original part, with enhanced moisture resistance and extended operating temperature to 175°C.

Parameter Comparison

Engineering Selection Recommendations

CMF507K1500FHEB Selection: This part provides direct electrical and mechanical equivalence to the RNF14FTC7K15 with identical 0.25W power rating and resistance specifications. Both parts maintain ROHS3 compliance and operate within compatible temperature ranges. The CMF507K1500FHEB adds moisture resistance and extends maximum operating temperature to 175°C, providing enhanced reliability without design modification. This part is recommended for direct substitution in existing designs.

CMF557K1500FHEB Selection: This part qualifies as an upgrade option with doubled power rating (0.5W vs 0.25W) while maintaining all electrical parameters. The increased power dissipation capability and extended operating temperature to 175°C make this suitable for applications requiring thermal margin or higher power density. ROHS3 compliance is maintained. Physical dimensions are slightly smaller, which may require PCB layout verification for axial component spacing.

Both substitute parts are manufactured by Vishay Dale, an established supplier with active product status and substantial inventory availability, supporting supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can CMF557K1500FHEB replace RNF14FTC7K15 in any application?

A: Yes, CMF557K1500FHEB meets all electrical substitution criteria with superior power rating and thermal range. The 0.5W rating accommodates any application designed for 0.25W operation. Verify PCB layout compatibility due to slightly smaller axial dimensions (0.090" Dia x 0.240" L vs 0.093" Dia x 0.250" L).

Q: What is the difference between CMF557K1500FHEB and CMF507K1500FHEB?

A: Both parts share identical electrical specifications (7.15 kOhms, ±1%, ±50ppm/°C). The primary difference is power rating: CMF557K1500FHEB is rated 0.5W (1/2W) while CMF507K1500FHEB is rated 0.25W (1/4W). CMF507K1500FHEB provides direct power-rating equivalence to the original part. Both include moisture resistance and extended operating temperature to 175°C.

Q: Are all three parts ROHS3 compliant?

A: Yes, RNF14FTC7K15, CMF557K1500FHEB, and CMF507K1500FHEB are all ROHS3 compliant with REACH unaffected status.

Q: What packaging differences exist between these parts?

A: RNF14FTC7K15 is supplied in Tape & Reel (TR) packaging. Both Vishay Dale substitutes (CMF557K1500FHEB and CMF507K1500FHEB) are supplied in Cut Tape (CT) packaging. Verify compatibility with assembly equipment and procurement workflows.

Q: Can these parts be used interchangeably in high-temperature applications?

A: RNF14FTC7K15 operates to 155°C maximum. Both CMF substitutes extend to 175°C, providing 20°C additional thermal margin. For applications approaching 155°C, the Vishay Dale parts offer enhanced reliability. Verify specific application temperature requirements before selection.

Q: Are there any dimensional constraints for PCB layout?

A: RNF14FTC7K15 dimensions are 0.093" Dia x 0.250" L. CMF557K1500FHEB is 0.090" Dia x 0.240" L, and CMF507K1500FHEB is 0.065" Dia x 0.150" L. Verify axial component spacing and lead hole positioning on PCB layouts, particularly for CMF507K1500FHEB which is significantly smaller.