RNF12FTC44K2 Equivalent & Substitute Parts

Part Overview

The RNF12FTC44K2 is a 44.2 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 reliable performance across industrial temperature ranges. The part maintains Active product status with 741 units in current inventory. Substitute parts are identified to provide design flexibility, supply chain alternatives, and equivalent electrical performance for applications where the original part may be unavailable or where alternative packaging formats are preferred.

Substiute Parts

RNF12FTC44K2

Stackpole Electronics IncIn Stock: 792RNF12FTC44K2 Datasheet

Current PartRFQ

CMF5544K200FHEB

Vishay DaleIn Stock: 2380CMF5544K200FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF12FTC44K2 are qualified based on strict electrical and mechanical equivalence across the following parameters:

• Resistance value: 44.2 kOhms (exact match required)
• Tolerance: ±1% (equivalent precision grade)
• Power rating: 0.5W / 1/2W (identical thermal capability)
• Composition: Metal film (same technology and performance characteristics)
• Temperature coefficient: ±50ppm/°C (matching stability specification)
• Package configuration: Axial through-hole (mechanical compatibility)
• Compliance certifications: ROHS3 Compliant, REACH Unaffected, EAR99 classification (regulatory equivalence)

The CMF5544K200FHEB from Vishay Dale meets all substitution criteria. Packaging format differs (Cut Tape vs. Tape & Reel), and the operating temperature maximum extends to 175°C, providing enhanced thermal margin. Physical dimensions vary slightly due to manufacturer design standards while maintaining axial form factor compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the RNF12FTC44K2 and CMF5544K200FHEB are Active status components with full ROHS3 compliance and REACH unaffected certification, qualifying them for equivalent use in regulated applications. The CMF5544K200FHEB provides extended operating temperature capability to 175°C and includes moisture resistance features, offering enhanced environmental protection. Selection between these parts should be based on packaging requirements (Tape & Reel versus Cut Tape format), physical space constraints within the assembly, and supply chain availability. Both components satisfy identical electrical specifications and thermal performance requirements for the 44.2 kOhms ±1% 0.5W resistor function.

Frequently Asked Questions (FAQ)

Q: Can the CMF5544K200FHEB replace the RNF12FTC44K2 in existing designs?

A: Yes. Both components share identical electrical specifications: 44.2 kOhms ±1% tolerance, 0.5W power rating, metal film composition, and ±50ppm/°C temperature coefficient. The axial through-hole package format is mechanically compatible. Physical dimension differences (CMF is smaller) do not affect electrical function and may provide layout advantages.

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

A: The RNF12FTC44K2 is supplied in Tape & Reel (TR) format for automated assembly processes. The CMF5544K200FHEB is supplied in Cut Tape (CT) format, suitable for manual or semi-automated placement. Selection depends on production methodology and handling requirements.

Q: Does the extended temperature range of the CMF5544K200FHEB affect compatibility?

A: No. The CMF5544K200FHEB operates from -55°C to 175°C, while the RNF12FTC44K2 operates from -55°C to 155°C. The substitute part's wider range is a superset of the original specification and does not create incompatibility. Applications operating within the original -55°C to 155°C range experience no performance difference.

Q: Are both parts suitable for safety-critical applications?

A: Both components feature safety-grade construction with flame retardant coating and carry ROHS3 compliance certification. The CMF5544K200FHEB additionally includes moisture resistance. Compliance certifications are equivalent for regulatory purposes.

Q: What inventory considerations apply to these substitutes?

A: The RNF12FTC44K2 has 741 units in stock. The CMF5544K200FHEB has 2342 units available, providing greater supply availability. Packaging format differences may affect procurement lead times and handling procedures.