RNF12FTC52K3 Equivalent & Substitute Parts

Part Overview

The RNF12FTC52K3 is a 52.3 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-grade construction, designed for applications requiring precision resistance values with high reliability. The part is currently in active production status with 800 pieces available in stock. Substitute parts may be required due to supply chain constraints, lead time considerations, or specific application requirements for alternative packaging formats or enhanced environmental specifications.

Substiute Parts

RNF12FTC52K3

Stackpole Electronics IncIn Stock: 878RNF12FTC52K3 Datasheet

Current PartRFQ

CMF5552K300FHEB

Vishay DaleIn Stock: 2077CMF5552K300FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The CMF5552K300FHEB from Vishay Dale qualifies as a direct substitute based on the following critical parameters:

• Identical resistance value: 52.3 kOhms
• Identical tolerance: ±1%
• Identical power rating: 0.5W (1/2W)
• Identical composition: Metal Film
• Identical package type: Axial
• Identical temperature coefficient: ±50ppm/°C
• Identical electrical safety features: Flame Retardant Coating, Safety
• Identical compliance certifications: ROHS3 Compliant, REACH Unaffected, EAR99

The substitute part demonstrates enhanced environmental specifications (operating temperature range extended to -55°C to 175°C) and additional moisture resistance features, making it suitable for applications with more demanding environmental conditions while maintaining full backward compatibility with the original specification.

Parameter Comparison

Engineering Selection Recommendations

Both the RNF12FTC52K3 and CMF5552K300FHEB meet identical electrical specifications and compliance requirements for standard applications. Selection between these parts should be based on:

RNF12FTC52K3 (Stackpole Electronics Inc): Select when Tape & Reel packaging is required for automated assembly processes or when the larger physical dimensions (0.108" Dia x 0.344" L) are compatible with board layout constraints. This part maintains active production status with established supply availability.

CMF5552K300FHEB (Vishay Dale): Select when Cut Tape packaging is acceptable or preferred for manual assembly or mixed-component handling. This substitute offers extended operating temperature range (-55°C to 175°C versus -55°C to 155°C) and additional moisture resistance features, providing enhanced performance margins for applications in temperature-sensitive or humidity-prone environments. The smaller physical dimensions (0.090" Dia x 0.240" L) may provide layout advantages in space-constrained designs.

Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory compatibility across global markets.

Frequently Asked Questions (FAQ)

Q: Can CMF5552K300FHEB be used as a direct replacement for RNF12FTC52K3 in existing designs?

A: Yes. Both parts share identical electrical specifications (52.3 kOhms ±1%, 0.5W, metal film composition, ±50ppm/°C temperature coefficient) and identical safety features (flame retardant coating). The primary differences are packaging format (Cut Tape versus Tape & Reel) and physical dimensions. Verify that the smaller size of the CMF5552K300FHEB (0.090" Dia x 0.240" L) is compatible with your PCB layout and assembly equipment.

Q: What is the impact of the different physical dimensions between these parts?

A: The CMF5552K300FHEB is physically smaller (0.090" Dia x 0.240" L) compared to the RNF12FTC52K3 (0.108" Dia x 0.344" L). This difference may affect PCB layout spacing, lead length requirements, and mechanical mounting considerations. Confirm that your design accommodates the smaller form factor and that assembly equipment can handle the reduced dimensions.

Q: Does the extended operating temperature range of the CMF5552K300FHEB provide additional benefits?

A: The CMF5552K300FHEB operates from -55°C to 175°C, compared to -55°C to 155°C for the RNF12FTC52K3. This 20°C extension at the upper temperature limit provides additional thermal margin for applications operating in high-temperature environments. The moisture resistance feature of the CMF5552K300FHEB offers enhanced protection in humid or corrosive environments.

Q: Are there packaging considerations when switching between these parts?

A: Yes. The RNF12FTC52K3 is supplied in Tape & Reel (TR) format, optimized for automated pick-and-place assembly. The CMF5552K300FHEB is supplied in Cut Tape (CT) format, suitable for manual assembly or mixed-component handling. Verify that your assembly process and equipment are compatible with the selected packaging format.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both the RNF12FTC52K3 and CMF5552K300FHEB are ROHS3 compliant, REACH unaffected, and classified under EAR99 export control. Both parts meet identical electrical safety requirements with flame retardant coating and safety-grade construction.