CMF555K4900FKBF Equivalent & Substitute Parts

Part Overview

The CMF555K4900FKBF is a 5.49 kOhms ±1% metal film through-hole resistor rated at 0.5W (1/2W) in axial package configuration. This component is manufactured by Vishay Dale and is currently active in production with 980 pieces in stock. The part features flame retardant coating and moisture-resistant construction suitable for industrial and commercial applications. Substitute parts may be required due to supply chain constraints, packaging preferences, or compliance requirements specific to end-use applications.

Substiute Parts

CMF555K4900FKBF

Vishay DaleIn Stock: 1000CMF555K4900FKBF Datasheet

Current PartRFQ

CMF555K4900FKEK

Vishay DaleIn Stock: 865CMF555K4900FKEK Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the CMF555K4900FKBF is determined by strict equivalence across the following parameters:

• Resistance value: 5.49 kOhms
• Tolerance: ±1%
• Power rating: 0.5W (1/2W)
• Composition: Metal Film
• Package: Axial through-hole
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C to 175°C
• Physical dimensions: 0.090" Dia × 0.240" L
• Features: Flame retardant coating, moisture resistant

The identified substitute part CMF555K4900FKEK meets all electrical and mechanical parameters required for direct substitution. This part differs only in product status and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The CMF555K4900FKBF is the primary selection for new designs due to active product status and current availability. The substitute part CMF555K4900FKEK provides electrical and mechanical equivalence but carries discontinued status at major distributors.

Selection between these parts should be based on compliance requirements. The CMF555K4900FKEK offers RoHS3 compliance and REACH unaffected status, making it suitable for applications with strict environmental regulations. The CMF555K4900FKBF remains appropriate for applications where RoHS non-compliance is acceptable and REACH-affected materials are permitted.

Both parts are functionally interchangeable within circuits requiring 5.49 kOhms ±1% metal film resistors at 0.5W power dissipation across the -55°C to 175°C operating range.

Frequently Asked Questions (FAQ)

Q: Can CMF555K4900FKEK be used as a direct replacement for CMF555K4900FKBF?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters including resistance, tolerance, power rating, temperature coefficient, operating range, and physical dimensions. The parts differ only in product status and compliance certifications.

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

A: CMF555K4900FKBF is RoHS non-compliant and REACH affected. CMF555K4900FKEK is RoHS3 compliant and REACH unaffected. Selection depends on end-use application requirements and regional regulations.

Q: Are the physical dimensions identical?

A: Yes. Both parts measure 0.090" diameter × 0.240" length (2.29mm × 6.10mm) and use identical axial through-hole package configuration.

Q: What is the current availability status?

A: CMF555K4900FKBF has 980 pieces in stock with active product status. CMF555K4900FKEK has 758 pieces available but is discontinued at DiGi Electronics.

Q: Can these parts be used interchangeably in PCB designs?

A: Yes. Identical package type, lead spacing, and physical dimensions allow direct substitution without PCB layout modifications.