CMF554K9900FKBF Equivalent & Substitute Parts

Part Overview

The CMF554K9900FKBF is a 4.99 kOhms ±1% metal film through-hole resistor rated at 0.5W (1/2W) in axial package configuration. Manufactured by Vishay Dale, this component features flame retardant coating and moisture-resistant properties suitable for industrial and commercial applications. The part is currently active in production. Identifying equivalent substitute parts is necessary to ensure supply chain continuity, optimize inventory management, and accommodate varying compliance requirements across different procurement specifications.

Substiute Parts

CMF554K9900FKBF

Vishay DaleIn Stock: 845CMF554K9900FKBF Datasheet

Current PartRFQ

CMF554K9900FKEK

Vishay DaleIn Stock: 841CMF554K9900FKEK Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CMF554K9900FKBF are determined by strict equivalence across the following critical parameters:

• Resistance value: 4.99 kOhms
• Tolerance: ±1%
• Power rating: 0.5W (1/2W)
• Composition: Metal Film
• Package: Axial
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C to 175°C
• Physical dimensions: 0.090" Dia x 0.240" L (2.29mm x 6.10mm)
• Features: Flame Retardant Coating, Moisture Resistant, Safety

The substitute part CMF554K9900FKEK maintains identical electrical and mechanical specifications, differing only in packaging designation and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Both CMF554K9900FKBF and CMF554K9900FKEK are electrically and mechanically identical. Selection between these parts depends on regulatory and compliance requirements:

The CMF554K9900FKBF is suitable for applications where RoHS3 compliance is not mandated and REACH-affected material usage is acceptable.

The CMF554K9900FKEK is the appropriate choice for applications requiring ROHS3 compliance and REACH-unaffected material composition. This variant is recommended for new designs and procurement specifications with modern environmental compliance requirements.

Both parts carry the same ECCN (EAR99) and HTSUS (8533.21.0090) classifications.

Frequently Asked Questions (FAQ)

Q: Are CMF554K9900FKBF and CMF554K9900FKEK electrically interchangeable?

A: Yes. Both parts have identical resistance (4.99 kOhms), tolerance (±1%), power rating (0.5W), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C to 175°C). They are direct electrical substitutes.

Q: What is the difference between these two part numbers?

A: The primary differences are packaging designation and compliance certifications. CMF554K9900FKEK is ROHS3 compliant and REACH unaffected, while CMF554K9900FKBF is RoHS non-compliant and REACH affected.

Q: Can I use CMF554K9900FKEK as a replacement for CMF554K9900FKBF in existing designs?

A: Yes. The parts are mechanically and electrically identical with the same axial package dimensions (0.090" Dia x 0.240" L). The substitution is valid for PCB layout and circuit performance.

Q: Which part should I specify for new designs?

A: CMF554K9900FKEK is recommended for new designs due to its ROHS3 compliance and REACH-unaffected status, aligning with current environmental regulations.

Q: Are there any thermal or frequency limitations I should consider?

A: Both parts operate across -55°C to 175°C with a temperature coefficient of ±100ppm/°C. No additional thermal or frequency constraints are specified beyond these parameters.