RNF12FTC9K09 Equivalent & Substitute Parts

Part Overview

The RNF12FTC9K09 is a 9.09 kOhms ±1% metal film axial through-hole resistor rated at 0.5W (1/2W) manufactured by Stackpole Electronics Inc. This component features flame retardant coating and safety construction, designed for applications requiring precision resistance values in compact axial packages. The part maintains Active product status with 827 units in current inventory. Substitute parts are identified to provide design flexibility, alternative sourcing options, and compatibility with varying procurement requirements while maintaining electrical and mechanical equivalence.

Substiute Parts

RNF12FTC9K09

Stackpole Electronics IncIn Stock: 895RNF12FTC9K09 Datasheet

Current PartRFQ

CMF559K0900FHEB

Vishay DaleIn Stock: 1605CMF559K0900FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RNF12FTC9K09 is determined by strict equivalence across the following critical parameters:

• Resistance value: 9.09 kOhms (exact match required)
• Tolerance: ±1% (precision class equivalence)
• Power rating: 0.5W / 1/2W (thermal capability match)
• Composition: Metal film (electrical performance class)
• Package configuration: Axial through-hole (mechanical compatibility)
• Temperature coefficient: ±50ppm/°C (stability equivalence)
• Regulatory compliance: ROHS3 Compliant, REACH Unaffected, EAR99 classification

The CMF559K0900FHEB from Vishay Dale meets all substitution criteria. Both parts share identical electrical specifications, regulatory certifications, and axial package compatibility. Physical dimensions differ slightly, but both conform to standard axial resistor form factors suitable for through-hole PCB assembly.

Parameter Comparison

Engineering Selection Recommendations

Both the RNF12FTC9K09 and CMF559K0900FHEB are Active status components meeting ROHS3 compliance and REACH regulatory requirements. Selection between these parts should be based on:

• Procurement availability and lead time requirements
• Packaging format preference (Tape & Reel versus Cut Tape)
• Extended temperature range requirement (CMF559K0900FHEB supports -55°C to 175°C versus -55°C to 155°C for RNF12FTC9K09)
• Moisture resistance specification (CMF559K0900FHEB includes moisture resistant feature)
• Supplier inventory status and cost considerations

Both components are electrically and mechanically interchangeable for standard through-hole PCB applications requiring 9.09 kOhms ±1% metal film resistors at 0.5W power dissipation.

Frequently Asked Questions (FAQ)

Q: Can CMF559K0900FHEB replace RNF12FTC9K09 in existing designs?

A: Yes. Both parts share identical resistance (9.09 kOhms), tolerance (±1%), power rating (0.5W), composition (metal film), and temperature coefficient (±50ppm/°C). Axial package compatibility permits direct substitution in through-hole PCB layouts.

Q: What are the physical dimension differences?

A: RNF12FTC9K09 measures 0.108" diameter × 0.344" length (2.75mm × 8.75mm). CMF559K0900FHEB measures 0.090" diameter × 0.240" length (2.29mm × 6.10mm). The CMF part is more compact while maintaining equivalent electrical performance and axial lead configuration.

Q: Are there temperature range limitations for substitution?

A: The RNF12FTC9K09 operates from -55°C to 155°C. The CMF559K0900FHEB extends to -55°C to 175°C. For applications within the RNF12FTC9K09 temperature range, both parts are equivalent. For applications requiring operation above 155°C, only CMF559K0900FHEB is suitable.

Q: Do both parts meet the same regulatory standards?

A: Yes. Both components are ROHS3 Compliant, REACH Unaffected, and classified as EAR99 for export control purposes.

Q: What is the difference in packaging format?

A: RNF12FTC9K09 is supplied in Tape & Reel (TR) format. CMF559K0900FHEB is supplied in Cut Tape (CT) format. Selection depends on assembly process requirements and volume considerations.

Q: Does the moisture resistant feature of CMF559K0900FHEB affect substitution compatibility?

A: No. Moisture resistance is an additional feature that does not prevent substitution. It provides enhanced environmental protection in humid or corrosive applications without affecting electrical equivalence.