RNF14FTC768R Equivalent & Substitute Parts

Part Overview

The RNF14FTC768R is a 768 Ohms ±1% 0.25W (1/4W) through-hole axial resistor manufactured by Stackpole Electronics Inc. This metal film resistor features flame retardant coating and safety construction, designed for general-purpose electronic applications requiring precision resistance values. The part maintains Active product status with 678 pieces in current inventory. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are required due to component availability, procurement lead times, or design optimization needs.

Substiute Parts

RNF14FTC768R

Stackpole Electronics IncIn Stock: 727RNF14FTC768R Datasheet

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CMF55768R00FHEB

Vishay DaleIn Stock: 1549CMF55768R00FHEB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF14FTC768R are qualified based on the following criteria:

Electrical Equivalence: Resistance value (768 Ohms) and tolerance (±1%) must be identical. Temperature coefficient (±50ppm/°C) must match to ensure thermal stability in the application circuit.

Mechanical Compatibility: Package type must be Axial to maintain PCB layout and assembly compatibility. Physical dimensions must be compatible with existing board designs and component spacing.

Composition & Construction: Metal film composition is required to maintain precision and stability characteristics. Flame retardant coating and safety features must be present.

Compliance & Certification: RoHS3 compliance and REACH unaffected status must be maintained. ECCN and HTSUS classifications must align with regulatory requirements.

Power Rating Consideration: While the substitute part may have a higher power rating (0.5W vs 0.25W), this represents a design upgrade that does not compromise circuit function. The substitute remains electrically and mechanically compatible.

Parameter Comparison

Engineering Selection Recommendations

The CMF55768R00FHEB qualifies as a direct substitute for the RNF14FTC768R based on electrical and mechanical equivalence. Both parts maintain identical resistance (768 Ohms), tolerance (±1%), and temperature coefficient (±50ppm/°C). Metal film construction and axial package compatibility ensure functional interchangeability in circuit applications.

The substitute part offers design advantages including higher power rating (0.5W vs 0.25W), extended operating temperature range (-55°C ~ 175°C vs -55°C ~ 155°C), and moisture-resistant construction. Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements.

Selection between these parts should be based on procurement availability, packaging requirements (Tape & Reel vs Cut Tape), and application thermal environment. The higher inventory level of the substitute part (1442 pcs vs 678 pcs) may provide supply chain advantages.

Frequently Asked Questions (FAQ)

Q: Can CMF55768R00FHEB replace RNF14FTC768R in existing designs?

A: Yes. Both parts share identical electrical specifications (768 Ohms ±1%, ±50ppm/°C temperature coefficient) and axial package configuration. The substitute part is mechanically and electrically compatible with existing PCB layouts and circuit designs.

Q: What is the significance of the higher power rating on the substitute part?

A: The CMF55768R00FHEB is rated for 0.5W (1/2W) compared to the RNF14FTC768R at 0.25W (1/4W). This represents a design upgrade that provides additional thermal margin and does not compromise circuit function. The substitute part will operate safely in applications designed for the lower power rating.

Q: Are there differences in packaging that affect assembly?

A: The main part is supplied in Tape & Reel (TR) format, while the substitute is supplied in Cut Tape (CT) format. Both are axial through-hole components suitable for standard PCB assembly processes. Packaging format selection depends on production volume and assembly equipment compatibility.

Q: Do both parts meet the same compliance standards?

A: Yes. Both RNF14FTC768R and CMF55768R00FHEB are ROHS3 compliant and REACH unaffected. They share identical ECCN (EAR99) and HTSUS (8533.21.0090) classifications.

Q: What is the operating temperature difference between these parts?

A: The RNF14FTC768R operates from -55°C to 155°C, while the CMF55768R00FHEB operates from -55°C to 175°C. The substitute part provides a 20°C extended upper temperature limit, offering improved performance in high-temperature applications.

Q: Does the moisture-resistant feature of the substitute part affect compatibility?

A: No. The moisture-resistant construction of the CMF55768R00FHEB is an additional feature that does not impact electrical or mechanical compatibility. It provides enhanced environmental protection without affecting circuit performance.