RNF12FTC4K53 Equivalent & Substitute Parts

Part Overview

The RNF12FTC4K53 is a 4.53 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 with stable performance across industrial temperature ranges. The part maintains Active product status with 645 units in current inventory. Substitute parts are identified to provide design flexibility, alternative sourcing options, and inventory availability when the primary part is unavailable.

Substiute Parts

RNF12FTC4K53

Stackpole Electronics IncIn Stock: 690RNF12FTC4K53 Datasheet

Current PartRFQ

CMF554K5300FHEB

Vishay DaleIn Stock: 1490CMF554K5300FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RNF12FTC4K53 is determined by strict alignment of the following electrical and mechanical parameters:

• Resistance value: 4.53 kOhms (exact match required)
• Tolerance: ±1% (equivalent precision class)
• Power rating: 0.5W / 1/2W (equivalent thermal dissipation capability)
• Composition: Metal film (same construction technology)
• Temperature coefficient: ±50ppm/°C (equivalent stability specification)
• Package: Axial through-hole (mechanical compatibility)
• Compliance: ROHS3 Compliant, REACH Unaffected (regulatory alignment)

The CMF554K5300FHEB from Vishay Dale meets all substitution criteria. Both parts share identical electrical specifications, equivalent thermal performance, and compatible axial packaging. The substitute part extends the operating temperature range to -55°C ~ 175°C and includes moisture-resistant construction, providing enhanced environmental protection while maintaining full electrical equivalence.

Parameter Comparison

Engineering Selection Recommendations

Both the RNF12FTC4K53 and CMF554K5300FHEB are Active status components meeting ROHS3 compliance and REACH regulatory requirements. Selection between these parts is based on application requirements and supply chain considerations:

The RNF12FTC4K53 is the primary specification when sourcing from Stackpole Electronics Inc inventory. The CMF554K5300FHEB serves as a direct electrical equivalent from Vishay Dale, offering extended temperature range capability (-55°C ~ 175°C versus -55°C ~ 155°C) and moisture-resistant construction. Both parts are suitable for precision circuit applications requiring ±1% tolerance and stable performance across industrial temperature environments. Packaging format differs (Tape & Reel versus Cut Tape), which may influence procurement and assembly processes.

Frequently Asked Questions (FAQ)

Q: Can CMF554K5300FHEB replace RNF12FTC4K53 in all applications?

A: Yes, the CMF554K5300FHEB is electrically and mechanically equivalent. Both parts share identical resistance (4.53 kOhms), tolerance (±1%), power rating (0.5W), temperature coefficient (±50ppm/°C), and axial package configuration. The substitute part offers extended operating temperature range and moisture resistance, making it suitable for equivalent or more demanding environmental conditions.

Q: What are the physical dimension differences?

A: RNF12FTC4K53 dimensions are 0.108" Dia x 0.344" L (2.75mm x 8.75mm). CMF554K5300FHEB dimensions are 0.090" Dia x 0.240" L (2.29mm x 6.10mm). The substitute part is physically smaller, which may affect PCB layout and mechanical clearance considerations in space-constrained designs.

Q: Are there packaging format implications?

A: RNF12FTC4K53 is supplied in Tape & Reel (TR) format, while CMF554K5300FHEB is supplied in Cut Tape (CT) format. This affects procurement quantities, storage, and automated assembly compatibility. Verify your assembly equipment specifications before selecting based on packaging format.

Q: Do both parts meet the same regulatory standards?

A: Yes, both parts are ROHS3 Compliant and REACH Unaffected, meeting equivalent regulatory requirements for industrial and commercial applications.

Q: What is the temperature coefficient significance?

A: Both parts specify ±50ppm/°C temperature coefficient, indicating equivalent resistance stability across temperature variations. This parameter is critical for precision analog circuits where resistance drift must remain within specified tolerances.