RNF12FTC4K64 Equivalent & Substitute Parts

Part Overview

The RNF12FTC4K64 is a 4.64 kOhms ±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 with stable performance across industrial temperature ranges. The part is currently active in production with 872 units in stock. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained within the allowed parameter tolerances for this resistor category.

Substiute Parts

RNF12FTC4K64

Stackpole Electronics IncIn Stock: 948RNF12FTC4K64 Datasheet

Current PartRFQ

CMF554K6400FHEB

Vishay DaleIn Stock: 2136CMF554K6400FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF12FTC4K64 are qualified based on the following critical parameters:

• Resistance value: 4.64 kOhms (exact match required)
• Tolerance: ±1% (equivalent precision class)
• Power rating: 0.5W / 1/2W (equivalent or higher)
• Composition: Metal Film (same technology)
• Temperature coefficient: ±50ppm/°C (equivalent stability)
• Package: Axial through-hole (mechanical compatibility)
• Compliance: ROHS3 Compliant, REACH Unaffected (regulatory equivalence)

The CMF554K6400FHEB from Vishay Dale meets all substitution criteria. Physical dimensions differ slightly (0.090" Dia x 0.240" L versus 0.108" Dia x 0.344" L), but both maintain axial package compatibility. The substitute part extends the operating temperature range to -55°C ~ 175°C and includes moisture-resistant features, providing equivalent or enhanced performance.

Parameter Comparison

Engineering Selection Recommendations

Both the RNF12FTC4K64 and CMF554K6400FHEB are active production parts with full ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for industrial and commercial applications. The CMF554K6400FHEB provides an extended operating temperature range (-55°C ~ 175°C versus -55°C ~ 155°C) and includes moisture-resistant features, making it suitable for applications requiring enhanced environmental protection. Selection between these parts should be based on specific application temperature requirements and environmental exposure conditions. Both parts are electrically and mechanically equivalent for standard through-hole PCB assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the CMF554K6400FHEB replace the RNF12FTC4K64 in existing designs?

A: Yes. Both parts share identical electrical specifications (4.64 kOhms ±1%, 0.5W, ±50ppm/°C) and axial package compatibility. Physical dimensions differ slightly, but both fit standard through-hole spacing. The substitute part offers extended temperature range and moisture resistance.

Q: What are the key differences between these two resistors?

A: The primary differences are physical dimensions and operating temperature range. The CMF554K6400FHEB is smaller (0.090" Dia x 0.240" L) and operates to 175°C, while the RNF12FTC4K64 is larger (0.108" Dia x 0.344" L) and operates to 155°C. Both maintain identical electrical performance and precision.

Q: Are there packaging differences between these parts?

A: The RNF12FTC4K64 is supplied in Tape & Reel (TR) packaging, while the CMF554K6400FHEB is supplied in Cut Tape (CT) packaging. Both are suitable for automated assembly processes, with packaging selection dependent on production volume and handling requirements.

Q: Do both parts meet current compliance standards?

A: Yes. Both the RNF12FTC4K64 and CMF554K6400FHEB are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and use.

Q: Which part should be selected for high-temperature applications?

A: The CMF554K6400FHEB is recommended for applications requiring operation above 155°C, as it is rated to 175°C. For applications within the -55°C ~ 155°C range, either part is suitable based on availability and packaging requirements.