RNF12FTC866R Equivalent & Substitute Parts

Part Overview

The RNF12FTC866R is a 866 Ohms ±1% 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 values in compact form factors. The part maintains Active product status with 711 units in current inventory. Equivalent and substitute parts are identified to support procurement flexibility, supply chain continuity, and design optimization across compatible applications.

Substiute Parts

RNF12FTC866R

Stackpole Electronics IncIn Stock: 818RNF12FTC866R Datasheet

Current PartRFQ

CMF55866R00FHEB

Vishay DaleIn Stock: 774CMF55866R00FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF12FTC866R are identified based on strict electrical and mechanical compatibility criteria. The following parameters must match or remain within acceptable tolerances for direct substitution:

• Resistance value: 866 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 type: Axial (exact match required)
• Temperature coefficient: ±50ppm/°C (exact match required)
• Regulatory compliance: ROHS3 Compliant (minimum requirement)

The CMF55866R00FHEB from Vishay Dale meets all electrical specifications and maintains full regulatory compliance. Physical dimensions may vary within the axial package envelope, and operating temperature range may extend beyond the primary part specification without affecting substitution validity.

Parameter Comparison

Engineering Selection Recommendations

Both the RNF12FTC866R and CMF55866R00FHEB are Active status components with full ROHS3 compliance and REACH unaffected designation. Selection between these parts should be based on the following engineering considerations:

The RNF12FTC866R is suitable for applications where Tape & Reel packaging is required for automated assembly processes. The CMF55866R00FHEB offers extended operating temperature range to 175°C and includes moisture resistant properties, making it advantageous for applications exposed to elevated temperatures or humid environments. Both parts maintain identical electrical specifications and regulatory compliance, ensuring functional interchangeability within the specified operating parameters.

Physical dimension differences between the two parts (0.108" vs 0.090" diameter, 0.344" vs 0.240" length) must be evaluated against PCB layout constraints and mechanical clearance requirements in the target application.

Frequently Asked Questions (FAQ)

Q: Can CMF55866R00FHEB be used as a direct replacement for RNF12FTC866R?

A: Yes. Both parts share identical resistance value (866 Ohms), tolerance (±1%), power rating (0.5W), composition (metal film), temperature coefficient (±50ppm/°C), and regulatory compliance (ROHS3). Electrical performance is equivalent. Physical dimensions differ, requiring verification of PCB layout compatibility.

Q: What is the difference in operating temperature range between these parts?

A: The RNF12FTC866R operates from -55°C to 155°C, while the CMF55866R00FHEB extends to 175°C. For applications within the -55°C to 155°C range, both parts perform identically. Applications requiring operation above 155°C require the CMF55866R00FHEB.

Q: How do packaging formats affect substitution?

A: The RNF12FTC866R is supplied in Tape & Reel format, optimized for automated pick-and-place assembly. The CMF55866R00FHEB is supplied in Cut Tape format, suitable for manual or semi-automated assembly. Packaging format does not affect electrical performance or functional substitution, only procurement and assembly process compatibility.

Q: Are there moisture sensitivity differences between these parts?

A: Both parts have Moisture Sensitivity Level (MSL) listed as Not Applicable. The CMF55866R00FHEB includes moisture resistant features in its construction, providing additional environmental protection compared to the RNF12FTC866R, though both are suitable for standard industrial environments.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the RNF12FTC866R and CMF55866R00FHEB are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with identical HTSUS code 8533.21.0090.