RNF14FTC274K Equivalent & Substitute Parts

Part Overview

The RNF14FTC274K is a 274 kOhms ±1% 0.25W axial through-hole resistor manufactured by Stackpole Electronics Inc. This metal film resistor features flame retardant coating and safety construction, designed for applications requiring precision resistance values with tight tolerance specifications. The part is currently active in production with ROHS3 compliance and is suitable for general-purpose electronic circuit applications across industrial and commercial environments.

Substitute parts are identified when equivalent electrical specifications and mechanical compatibility can be maintained while potentially offering enhanced features or improved availability.

Substiute Parts

RNF14FTC274K

Stackpole Electronics IncIn Stock: 1233RNF14FTC274K Datasheet

Current PartRFQ

CMF55274K00FHEB

Vishay DaleIn Stock: 1767CMF55274K00FHEB Datasheet

UpgradeRFQ

CMF50274K00FHEB

Vishay DaleIn Stock: 1840CMF50274K00FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF14FTC274K are qualified based on the following criteria:

Electrical Equivalence: Resistance value (274 kOhms) and tolerance (±1%) must be identical. Temperature coefficient (±50ppm/°C) must match or be superior.

Mechanical Compatibility: Package type must be axial through-hole configuration to ensure PCB footprint compatibility.

Composition & Construction: Metal film construction with flame retardant coating ensures consistent electrical performance and safety characteristics.

Compliance & Status: Parts must maintain ROHS3 compliance and active product status to ensure long-term availability and regulatory alignment.

Power Rating Consideration: While the main part is rated at 0.25W, substitute parts may have equal or higher power ratings (0.5W) without affecting circuit compatibility, as the higher rating provides additional thermal margin.

Parameter Comparison

Engineering Selection Recommendations

CMF50274K00FHEB (MFR Recommended): This Vishay Dale part provides direct electrical and mechanical equivalence to the RNF14FTC274K with identical 0.25W power rating and resistance specifications. The extended operating temperature range (-55°C ~ 175°C versus -55°C ~ 155°C) and moisture-resistant construction offer improved environmental performance. This part is the preferred substitute when direct replacement is required without thermal margin considerations.

CMF55274K00FHEB (Upgrade): This Vishay Dale part maintains all electrical specifications while providing doubled power rating (0.5W versus 0.25W). The extended operating temperature range and moisture-resistant features provide enhanced reliability margins. This part is suitable for applications where thermal stress or environmental exposure may be a concern, or where future design modifications might increase power dissipation.

Both substitute parts maintain ROHS3 compliance, active product status, and identical resistance and tolerance specifications, ensuring regulatory and functional compatibility with the original RNF14FTC274K.

Frequently Asked Questions (FAQ)

Q: Can CMF55274K00FHEB be used as a direct replacement for RNF14FTC274K?

A: Yes. The CMF55274K00FHEB maintains identical resistance (274 kOhms), tolerance (±1%), temperature coefficient (±50ppm/°C), and axial package configuration. The higher power rating (0.5W versus 0.25W) does not affect compatibility and provides additional thermal margin.

Q: What is the difference between CMF55274K00FHEB and CMF50274K00FHEB?

A: Both parts are electrically equivalent to the RNF14FTC274K. The primary difference is power rating: CMF55274K00FHEB is rated at 0.5W, while CMF50274K00FHEB is rated at 0.25W (matching the original). Both offer extended operating temperature range and moisture-resistant construction compared to the original part.

Q: Are the physical dimensions compatible between the main part and substitutes?

A: All three parts use axial through-hole package configuration and are mechanically compatible for PCB mounting. Specific dimensional variations (diameter and length) are minor and do not affect standard PCB footprint compatibility.

Q: Do the substitute parts maintain the same compliance certifications?

A: Yes. Both CMF55274K00FHEB and CMF50274K00FHEB are ROHS3 compliant, REACH unaffected, and classified as EAR99, matching the compliance profile of the RNF14FTC274K.

Q: Which substitute should be selected for new designs?

A: Selection depends on thermal requirements. For applications matching the original 0.25W specification, CMF50274K00FHEB provides direct equivalence. For applications requiring thermal margin or operating in elevated temperature environments, CMF55274K00FHEB is appropriate.