RNF12FTD1R00 Equivalent & Substitute Parts

Part Overview

The RNF12FTD1R00 is a 1 Ohm, ±1% tolerance, 0.5W through-hole axial resistor manufactured by Stackpole Electronics Inc. This metal film resistor features flame retardant coating and safety construction, designed for applications requiring precision resistance in compact axial packages. The part is currently in active production status. Substitute parts are identified when original inventory is unavailable or when alternative sourcing is required while maintaining equivalent electrical and mechanical performance.

Substiute Parts

RNF12FTD1R00

Stackpole Electronics IncIn Stock: 719RNF12FTD1R00 Datasheet

Current PartRFQ

CMF551R0000FKEA

Vishay DaleIn Stock: 5619CMF551R0000FKEA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF12FTD1R00 are qualified based on the following electrical and mechanical parameters:

• Resistance value: 1 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 0.5W / 1/2W (exact match required)
• Composition: Metal Film (exact match required)
• Temperature coefficient: ±100ppm/°C (exact match required)
• Package type: Axial (exact match required)
• Operating temperature range: minimum -55°C to 155°C or higher
• Compliance: ROHS3 Compliant, REACH Unaffected

The CMF551R0000FKEA from Vishay Dale meets all electrical specifications and compliance requirements. Physical dimensions differ slightly, but both parts maintain axial package compatibility for standard through-hole PCB applications.

Parameter Comparison

Engineering Selection Recommendations

Both the RNF12FTD1R00 and CMF551R0000FKEA are active production parts with full ROHS3 compliance and REACH unaffected status, making them suitable for regulated applications. The CMF551R0000FKEA provides an extended operating temperature range to 175°C and includes moisture resistant properties, offering enhanced environmental protection. Selection between these parts should be based on inventory availability, packaging requirements (Tape & Reel versus Cut Tape), and specific application temperature demands. Both parts satisfy the core electrical and mechanical requirements for 1 Ohm, ±1%, 0.5W axial resistor applications.

Frequently Asked Questions (FAQ)

Q: Can CMF551R0000FKEA replace RNF12FTD1R00 in my circuit?

A: Yes. Both parts share identical electrical specifications: 1 Ohm resistance, ±1% tolerance, 0.5W power rating, metal film composition, and ±100ppm/°C temperature coefficient. Both are axial package through-hole components with equivalent compliance certifications.

Q: What is the difference in physical dimensions?

A: RNF12FTD1R00 measures 0.108" diameter × 0.344" length (2.75mm × 8.75mm). CMF551R0000FKEA measures 0.090" diameter × 0.240" length (2.29mm × 6.10mm). The CMF part is more compact but both fit standard axial resistor footprints on PCBs.

Q: Does the extended temperature range of CMF551R0000FKEA affect compatibility?

A: No. The CMF part's -55°C to 175°C range encompasses the RNF part's -55°C to 155°C range. Extended temperature capability does not reduce compatibility; it provides additional operational margin.

Q: Are there packaging differences I should consider?

A: RNF12FTD1R00 is supplied in Tape & Reel format. CMF551R0000FKEA is supplied in Cut Tape format. Choose based on your assembly process requirements and volume needs.

Q: Do both parts meet the same compliance standards?

A: Yes. Both parts are ROHS3 compliant and REACH unaffected, meeting equivalent regulatory requirements for industrial and commercial applications.