RNF12FTC576R Equivalent & Substitute Parts

Part Overview

The RNF12FTC576R is a 576 Ohms ±1% 0.5W through-hole axial resistor manufactured by Stackpole Electronics Inc. This metal film resistor features flame retardant coating and safety design, suitable for applications requiring precision resistance values in compact form factors. The part maintains Active product status with 1007 units in current inventory. Substitute parts are identified to provide alternative sourcing options while maintaining electrical and mechanical compatibility within specified tolerance ranges.

Substiute Parts

RNF12FTC576R

Stackpole Electronics IncIn Stock: 1091RNF12FTC576R Datasheet

Current PartRFQ

CMF55576R00FHEB

Vishay DaleIn Stock: 10570CMF55576R00FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF12FTC576R are qualified based on the following critical parameters:

• Resistance value: 576 Ohms (exact match required)
• Tolerance: ±1% (ensures precision equivalence)
• Power rating: 0.5W / 1/2W (functional equivalence)
• Composition: Metal Film (electrical performance characteristics)
• Temperature coefficient: ±50ppm/°C (stability equivalence)
• Package: Axial through-hole (mechanical compatibility)
• Compliance: ROHS3 Compliant, REACH Unaffected (regulatory equivalence)

The CMF55576R00FHEB from Vishay Dale meets all critical substitution criteria. Physical dimensions differ slightly (0.090" Dia x 0.240" L versus 0.108" Dia x 0.344" L), which is acceptable for axial through-hole applications where lead spacing and hole diameter compatibility are maintained. The substitute part extends the operating temperature range to -55°C ~ 175°C and adds moisture resistance as an additional feature.

Parameter Comparison

Engineering Selection Recommendations

Both the RNF12FTC576R and CMF55576R00FHEB maintain Active product status and full ROHS3 compliance with REACH unaffected designation. Selection between these parts should be based on availability and packaging requirements. The RNF12FTC576R is supplied in Tape & Reel (TR) format with 1007 units in stock. The CMF55576R00FHEB is supplied in Cut Tape (CT) format with 10549 units in stock. The Vishay Dale substitute provides extended temperature range capability (-55°C ~ 175°C versus -55°C ~ 155°C) and moisture resistance, offering enhanced environmental performance for applications requiring these specifications. Physical dimension differences are within acceptable tolerances for standard through-hole PCB applications.

Frequently Asked Questions (FAQ)

Q: Can CMF55576R00FHEB replace RNF12FTC576R in all applications?

A: Yes, within the specified operating temperature range of -55°C ~ 155°C. The substitute part supports extended operation to 175°C, making it suitable for higher temperature environments. Both parts meet identical electrical specifications: 576 Ohms ±1%, 0.5W power rating, ±50ppm/°C temperature coefficient, and metal film composition.

Q: Are there physical compatibility concerns with the different dimensions?

A: The CMF55576R00FHEB has smaller axial dimensions (0.090" Dia x 0.240" L) compared to the RNF12FTC576R (0.108" Dia x 0.344" L). Both are standard axial through-hole packages compatible with typical PCB hole spacing. Verify PCB layout accommodates the smaller form factor if space constraints exist.

Q: What is the difference in packaging between these parts?

A: The RNF12FTC576R is supplied in Tape & Reel (TR) format for automated assembly. The CMF55576R00FHEB is supplied in Cut Tape (CT) format. Selection depends on assembly process requirements and volume needs.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both parts are ROHS3 Compliant and REACH Unaffected, with identical ECCN (EAR99) and HTSUS (8533.21.0090) classifications.

Q: What additional features does the substitute part provide?

A: The CMF55576R00FHEB includes moisture resistance in addition to flame retardant coating and safety features present in the RNF12FTC576R. This provides enhanced environmental protection for applications exposed to humidity or moisture conditions.