RNF12FTC226R Equivalent & Substitute Parts

Part Overview

The RNF12FTC226R is a 226 Ohm ±1% metal film through-hole resistor rated at 0.5W (1/2W) in axial package configuration, manufactured by Stackpole Electronics Inc. This component is designed for applications requiring precision resistive elements with flame retardant coating and safety features. The part maintains Active product status with 682 units currently in stock. Substitute parts are identified when equivalent electrical specifications, mechanical compatibility, and regulatory compliance can be maintained across alternative manufacturers.

Substiute Parts

RNF12FTC226R

Stackpole Electronics IncIn Stock: 774RNF12FTC226R Datasheet

Current PartRFQ

CMF55226R00FHEB

Vishay DaleIn Stock: 4996CMF55226R00FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RNF12FTC226R is determined by strict equivalence across the following parameters:

• Resistance value: 226 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 0.5W / 1/2W (exact match required)
• Composition: Metal Film (exact match required)
• Package: Axial through-hole (exact match required)
• Temperature coefficient: ±50ppm/°C (exact match required)
• Regulatory compliance: ROHS3 Compliant, REACH Unaffected, EAR99 classification (exact match required)

The CMF55226R00FHEB from Vishay Dale meets all substitution criteria. Both parts share identical electrical specifications and regulatory certifications. Physical dimensions differ slightly, but both maintain standard axial package compatibility for through-hole PCB applications.

Parameter Comparison

Engineering Selection Recommendations

Both the RNF12FTC226R and CMF55226R00FHEB are Active status components meeting ROHS3 compliance and REACH requirements. Selection between these parts should be based on availability, packaging format preference (Tape & Reel versus Cut Tape), and application-specific environmental conditions. The CMF55226R00FHEB provides extended operating temperature range to 175°C and includes moisture-resistant features, offering broader environmental tolerance. The RNF12FTC226R maintains standard operating range to 155°C. Both parts satisfy identical electrical and mechanical substitution criteria for 226 Ohm ±1% 0.5W axial resistor applications.

Frequently Asked Questions (FAQ)

Q: Can CMF55226R00FHEB replace RNF12FTC226R in all applications?

A: Yes, provided the application operates within the RNF12FTC226R temperature range (-55°C to 155°C). The CMF55226R00FHEB supports extended temperature operation to 175°C, making it suitable for higher-temperature environments where the original part is also acceptable.

Q: What are the physical dimension differences between these parts?

A: RNF12FTC226R measures 0.108" diameter × 0.344" length (2.75mm × 8.75mm). CMF55226R00FHEB measures 0.090" diameter × 0.240" length (2.29mm × 6.10mm). Both are axial package format and compatible with standard through-hole PCB layouts, though the Vishay part is more compact.

Q: Are packaging formats interchangeable?

A: RNF12FTC226R is supplied in Tape & Reel (TR) format. CMF55226R00FHEB is supplied in Cut Tape (CT) format. Both formats are compatible with automated assembly equipment, though tape configuration may affect handling and feeder compatibility depending on assembly line specifications.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both parts are ROHS3 Compliant, REACH Unaffected, and classified as EAR99 for export control purposes. HTSUS classification is identical (8533.21.0090).

Q: What additional features does the CMF55226R00FHEB provide?

A: The CMF55226R00FHEB includes moisture-resistant coating in addition to flame retardant properties. This provides enhanced protection in humid or moisture-prone environments while maintaining all other electrical and mechanical specifications.