RNF14FAC44K2 Equivalent & Substitute Parts

Part Overview

The RNF14FAC44K2 is a 44.2 kOhms ±1% 0.25W (1/4W) through-hole axial resistor manufactured by Stackpole Electronics Inc. This metal film resistor features flame retardant coating and safety construction, designed for applications requiring precision resistance values with tight tolerance specifications. The part is currently active in production with 843 units in stock. Substitute parts are identified to provide alternative sourcing options while maintaining electrical and mechanical compatibility within specified parameters.

Substiute Parts

RNF14FAC44K2

Stackpole Electronics IncIn Stock: 916RNF14FAC44K2 Datasheet

Current PartRFQ

CMF5544K200FHEB

Vishay DaleIn Stock: 2380CMF5544K200FHEB Datasheet

UpgradeRFQ

CMF5044K200FHEB

Vishay DaleIn Stock: 2021CMF5044K200FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF14FAC44K2 are qualified based on the following critical parameters:

• Resistance value: 44.2 kOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Composition: Metal Film (exact match required)
• Package type: Axial (exact match required)
• Temperature coefficient: ±50ppm/°C (exact match required)
• RoHS compliance: ROHS3 Compliant (minimum requirement)

Two substitute parts meet these criteria. The CMF5044K200FHEB maintains identical electrical specifications and power rating (0.25W) with enhanced operating temperature range (-55°C ~ 175°C) and moisture resistance. The CMF5544K200FHEB provides the same resistance, tolerance, and composition with increased power rating (0.5W) for applications requiring higher power dissipation capability.

Parameter Comparison

Engineering Selection Recommendations

CMF5044K200FHEB is the manufacturer-recommended direct substitute for the RNF14FAC44K2. Both parts maintain identical electrical specifications (44.2 kOhms ±1%, 0.25W, ±50ppm/°C) and axial package configuration. The CMF5044K200FHEB provides extended operating temperature range (-55°C ~ 175°C versus -55°C ~ 155°C) and moisture-resistant construction. This part is ROHS3 compliant and suitable for direct replacement in existing designs.

CMF5544K200FHEB serves as an upgrade option for applications requiring higher power dissipation. With identical resistance, tolerance, and temperature coefficient specifications, this 0.5W (1/2W) rated part accommodates designs with increased thermal requirements while maintaining full electrical compatibility. The CMF5544K200FHEB is ROHS3 compliant and features moisture-resistant construction.

Both substitute parts are active products with substantial inventory availability (2008 and 2342 units respectively).

Frequently Asked Questions (FAQ)

Q: Can CMF5044K200FHEB be used as a direct replacement for RNF14FAC44K2?

A: Yes. Both parts share identical electrical specifications: 44.2 kOhms ±1% resistance, 0.25W power rating, ±50ppm/°C temperature coefficient, and axial package configuration. The CMF5044K200FHEB provides enhanced operating temperature range and moisture resistance.

Q: What is the difference between CMF5044K200FHEB and CMF5544K200FHEB?

A: The primary difference is power rating. CMF5044K200FHEB is rated at 0.25W (1/4W), matching the original RNF14FAC44K2. CMF5544K200FHEB is rated at 0.5W (1/2W), providing higher power dissipation capability. All other electrical parameters remain identical.

Q: Can I use the 0.5W CMF5544K200FHEB in place of the 0.25W RNF14FAC44K2?

A: Yes, from an electrical compatibility standpoint. The higher power rating does not create incompatibility; it provides additional thermal margin. Physical dimensions differ slightly, so mechanical fit in the PCB layout must be verified.

Q: Are there packaging differences between these parts?

A: Yes. RNF14FAC44K2 is supplied in Tape & Box (TB) packaging. CMF5044K200FHEB is supplied in Tape & Reel (TR) packaging. CMF5544K200FHEB is supplied in Cut Tape (CT) packaging. All three maintain identical axial package configuration for through-hole mounting.

Q: What is the operating temperature difference?

A: RNF14FAC44K2 operates from -55°C to 155°C. Both Vishay Dale substitutes (CMF5044K200FHEB and CMF5544K200FHEB) operate from -55°C to 175°C, providing 20°C additional upper temperature margin.

Q: Are all parts RoHS compliant?

A: RNF14FAC44K2 and CMF5544K200FHEB are ROHS3 compliant. CMF5044K200FHEB is ROHS Affected. All parts meet REACH requirements and carry EAR99 ECCN classification.