RNF14FTC357R Equivalent & Substitute Parts

Part Overview

The RNF14FTC357R is a 357 Ohm ±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 construction, designed for applications requiring precision resistance with reliable performance across industrial temperature ranges. The part is currently active in production with ROHS3 compliance and maintains broad availability in inventory.

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

Substiute Parts

RNF14FTC357R

Stackpole Electronics IncIn Stock: 804RNF14FTC357R Datasheet

Current PartRFQ

CMF55357R00FHEB

Vishay DaleIn Stock: 1405CMF55357R00FHEB Datasheet

UpgradeRFQ

CMF50357R00FHEB

Vishay DaleIn Stock: 2733CMF50357R00FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF14FTC357R are qualified based on the following criteria:

Electrical Equivalence: All substitute parts maintain identical resistance value (357 Ohms) and tolerance (±1%), ensuring direct functional replacement in circuit applications.

Composition & Construction: All candidates are metal film axial resistors with flame retardant coating and safety features, matching the core construction of the main part.

Temperature Coefficient: All parts share ±50ppm/°C temperature coefficient, maintaining thermal stability characteristics.

Compliance & Certifications: All parts are ROHS3 compliant and REACH unaffected, meeting regulatory requirements equivalent to the main part.

Substitution Categories:

• Upgrade Substitute (CMF55357R00FHEB): Higher power rating (0.5W vs 0.25W) with extended operating temperature range (-55°C ~ 175°C vs -55°C ~ 155°C). Moisture resistant feature added. Suitable for applications requiring enhanced thermal headroom or moisture protection.

• Direct Equivalent (CMF50357R00FHEB): Identical power rating (0.25W) and operating temperature range (-55°C ~ 175°C). Moisture resistant feature added. Smallest physical dimensions. Manufacturer recommended equivalent from Vishay Dale.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement: CMF50357R00FHEB is the manufacturer-recommended equivalent, offering identical electrical specifications and power rating with added moisture resistance. This part is the preferred choice for one-to-one substitution in existing designs.

For Enhanced Thermal Performance: CMF55357R00FHEB provides doubled power dissipation capacity (0.5W vs 0.25W) and extended maximum operating temperature (175°C vs 155°C). Select this part when circuit redesign permits higher power rating or when thermal margin improvement is required.

Compliance Verification: All substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory equivalence with the main part across all markets.

Packaging Consideration: The main part is supplied in Tape & Reel format, while both substitutes are supplied in Cut Tape format. Verify packaging compatibility with assembly equipment and procurement workflows.

Frequently Asked Questions (FAQ)

Q: Can CMF50357R00FHEB be used as a direct drop-in replacement for RNF14FTC357R?

A: Yes. Both parts share identical resistance (357 Ohms), tolerance (±1%), power rating (0.25W), temperature coefficient (±50ppm/°C), and axial package type. The CMF50357R00FHEB adds moisture resistance and operates to 175°C versus 155°C maximum. Physical dimensions differ slightly but remain compatible with standard axial component footprints.

Q: What is the difference between the upgrade substitute (CMF55357R00FHEB) and the direct equivalent (CMF50357R00FHEB)?

A: The CMF55357R00FHEB has double the power rating (0.5W vs 0.25W) and higher maximum operating temperature (175°C vs 155°C). The CMF50357R00FHEB maintains the original 0.25W rating and is the manufacturer-recommended direct equivalent. Select CMF55357R00FHEB only if circuit design permits higher power dissipation or requires extended temperature operation.

Q: Are there any dimensional compatibility issues when substituting these parts?

A: All three parts are axial through-hole resistors with compatible lead spacing. The CMF50357R00FHEB has the smallest physical dimensions (0.065" Dia x 0.150" L), while the main part is the largest (0.093" Dia x 0.250" L). Verify PCB layout and component spacing to confirm fit, particularly in high-density designs.

Q: Do all substitute parts meet the same regulatory requirements?

A: Yes. All parts are ROHS3 compliant and REACH unaffected, matching the regulatory status of the RNF14FTC357R.

Q: What packaging formats are available?

A: The RNF14FTC357R is supplied in Tape & Reel (TR) format. Both substitute parts (CMF55357R00FHEB and CMF50357R00FHEB) are supplied in Cut Tape (CT) format. Confirm packaging compatibility with your assembly process before procurement.