RNF14FTC226R Equivalent & Substitute Parts

Part Overview

The RNF14FTC226R is a 226 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 values with reliable performance across industrial temperature ranges. The part maintains Active product status with 824 units in current inventory stock.

Substitute parts are identified to address application requirements including higher power dissipation capability, enhanced moisture resistance, or alternative packaging formats while maintaining core electrical specifications.

Substiute Parts

RNF14FTC226R

Stackpole Electronics IncIn Stock: 850RNF14FTC226R Datasheet

Current PartRFQ

CMF55226R00FHEB

Vishay DaleIn Stock: 4996CMF55226R00FHEB Datasheet

UpgradeRFQ

CMF50226R00FHEB

Vishay DaleIn Stock: 1435CMF50226R00FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RNF14FTC226R is determined by the following core parameters:

• Resistance Value: Must be 226 Ohms
• Tolerance: Must be ±1%
• Composition: Must be Metal Film
• Package Type: Must be Axial
• Compliance: Must maintain ROHS3 compliance

Substitute parts are grouped into two categories based on power rating capability:

Category 1 - Direct Equivalent (Same Power Rating) CMF50226R00FHEB maintains identical 0.25W power rating with enhanced moisture resistance and extended operating temperature range to 175°C.

Category 2 - Upgrade Equivalent (Higher Power Rating) CMF55226R00FHEB provides 0.5W (1/2W) power rating for applications requiring increased thermal headroom, with moisture resistance and extended temperature range.

Parameter Comparison

Engineering Selection Recommendations

CMF50226R00FHEB Selection Criteria

The CMF50226R00FHEB is the manufacturer-recommended direct equivalent. This part maintains identical electrical specifications (226 Ohms ±1%, 0.25W) and axial package configuration. The extended operating temperature range (-55°C to 175°C versus -55°C to 155°C) provides additional thermal margin. Moisture-resistant construction enhances reliability in humid environments. Both parts maintain ROHS3 compliance and REACH unaffected status. Packaging format differs (Cut Tape versus Tape & Reel), which may affect procurement and assembly workflows.

CMF55226R00FHEB Selection Criteria

The CMF55226R00FHEB serves as an upgrade equivalent for applications requiring higher power dissipation. The doubled power rating (0.5W versus 0.25W) reduces thermal stress on the component during operation. This part is suitable for circuits where the original 0.25W rating approaches or exceeds design margins. Electrical specifications remain identical (226 Ohms ±1%). Extended temperature range and moisture resistance provide additional performance headroom. Physical dimensions are slightly larger (0.090" Dia x 0.240" L versus 0.093" Dia x 0.250" L), requiring verification of PCB layout compatibility.

Frequently Asked Questions (FAQ)

Q: Can CMF50226R00FHEB be used as a direct drop-in replacement for RNF14FTC226R?

A: Yes. Both parts share identical resistance (226 Ohms), tolerance (±1%), power rating (0.25W), composition (metal film), and axial package type. The primary difference is packaging format (Cut Tape versus Tape & Reel). Verify that your assembly process accommodates the packaging change.

Q: What is the advantage of using CMF55226R00FHEB over the direct equivalent?

A: The CMF55226R00FHEB provides doubled power dissipation capability (0.5W versus 0.25W). This is beneficial in circuits where the resistor operates near its thermal limits or where design margins require additional headroom. The extended operating temperature range (-55°C to 175°C) also provides enhanced performance in high-temperature applications.

Q: Are there any physical dimension differences that affect PCB compatibility?

A: Yes. The RNF14FTC226R measures 0.093" Dia x 0.250" L. The CMF50226R00FHEB measures 0.065" Dia x 0.150" L (smaller). The CMF55226R00FHEB measures 0.090" Dia x 0.240" L (similar to original). Verify PCB footprint and component spacing before substitution.

Q: Do all three parts maintain the same compliance certifications?

A: Yes. All three parts are ROHS3 compliant and REACH unaffected. Regulatory compliance is maintained across all substitution options.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging supplies components on continuous tape wound on reels, suitable for high-volume automated assembly. Cut Tape (CT) packaging supplies components on tape segments, typically used for lower-volume orders or manual assembly. Both formats contain the same component; packaging format selection depends on your procurement and assembly requirements.

Q: Can CMF55226R00FHEB be used in applications designed for 0.25W resistors?

A: Yes. A higher-rated component (0.5W) can be used in applications designed for lower power ratings (0.25W). The component will operate with reduced thermal stress. However, verify that the slightly larger physical dimensions do not conflict with PCB layout constraints.