CMF55100R00FKBF39 Equivalent & Substitute Parts

Part Overview

The CMF55100R00FKBF39 is a 100 Ohm, 0.5W metal film axial through-hole resistor manufactured by Vishay Dale. This component is part of the CMF55 series and is currently in active production status. The resistor features flame retardant coating and moisture resistance, making it suitable for industrial and commercial applications requiring reliable performance across extended temperature ranges.

Identifying equivalent and substitute parts is necessary when the primary part number becomes unavailable, when packaging requirements change, or when design specifications allow for upgraded performance characteristics while maintaining functional compatibility.

Substiute Parts

CMF55100R00FKBF39

Vishay DaleIn Stock: 1260CMF55100R00FKBF39 Datasheet

Current PartRFQ

CMF55100R00DHR6

Vishay DaleIn Stock: 1610CMF55100R00DHR6 Datasheet

UpgradeRFQ

CMF55100R00FKEK

Vishay DaleIn Stock: 1751CMF55100R00FKEK Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CMF55100R00FKBF39 are determined by strict equivalence in the following critical parameters:

• Resistance Value: 100 Ohms (exact match required)
• Power Rating: 0.5W minimum
• Package Type: Axial through-hole configuration
• Composition: Metal film construction
• Operating Temperature Range: -55°C to 175°C minimum
• Physical Dimensions: 0.090" Dia × 0.240" L

Substitutes are grouped into two categories based on allowed parameter variations:

Upgrade Substitute: CMF55100R00DHR6 offers improved tolerance (±0.5% vs ±1%) and lower temperature coefficient (±50ppm/°C vs ±100ppm/°C) while maintaining all critical electrical and mechanical parameters. Packaging differs (Cut Tape vs Bulk).

Parametric Equivalent: CMF55100R00FKEK matches all electrical specifications and physical dimensions identically to the main part. The primary distinction is improved RoHS compliance status (ROHS3 Compliant vs non-compliant) and REACH status (REACH Unaffected vs REACH Affected). Packaging is identical (Bulk).

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications)

CMF55100R00FKEK is the appropriate selection when exact specification matching is required. This part maintains identical electrical performance, tolerance, temperature coefficient, and physical dimensions. Selection of this part is recommended for applications where regulatory compliance with ROHS3 and REACH Unaffected status is a design requirement or procurement specification.

For Performance Enhancement

CMF55100R00DHR6 is suitable when improved tolerance and temperature stability are beneficial to circuit performance. The ±0.5% tolerance and ±50ppm/°C temperature coefficient provide tighter component matching and reduced drift over temperature. This upgrade is compatible with all mechanical and thermal requirements of the original design. Packaging format differs (Cut Tape vs Bulk), which may affect procurement and assembly processes.

Compliance Considerations

Applications subject to RoHS3 or REACH compliance requirements should specify CMF55100R00FKEK. Applications without such regulatory constraints may use any of the three part numbers based on performance and packaging requirements.

Frequently Asked Questions (FAQ)

Q: Can CMF55100R00DHR6 be used as a direct replacement for CMF55100R00FKBF39?

A: Yes. CMF55100R00DHR6 is electrically and mechanically compatible. The ±0.5% tolerance is tighter than the ±1% specification of the main part, and the lower temperature coefficient (±50ppm/°C vs ±100ppm/°C) provides improved stability. The primary difference is packaging format (Cut Tape vs Bulk). Verify that your assembly process accommodates Cut Tape packaging.

Q: What is the difference between CMF55100R00FKEK and CMF55100R00FKBF39?

A: Both parts are electrically and mechanically identical with matching tolerance (±1%), temperature coefficient (±100ppm/°C), and physical dimensions. The key differences are RoHS compliance status (ROHS3 Compliant vs non-compliant) and REACH status (REACH Unaffected vs REACH Affected). CMF55100R00FKEK is the preferred selection for applications requiring regulatory compliance.

Q: Are all three parts interchangeable in the same circuit?

A: Yes, all three parts are functionally interchangeable from an electrical and mechanical standpoint. All maintain 100 Ohm resistance, 0.5W power rating, axial package configuration, and -55°C to 175°C operating range. Selection should be based on tolerance requirements, temperature stability needs, packaging format compatibility, and regulatory compliance status.

Q: Does packaging format affect circuit performance?

A: No. Packaging format (Bulk vs Cut Tape) does not affect electrical or thermal performance. The difference is in procurement and assembly logistics. Bulk packaging is typically used for manual assembly or small-volume applications, while Cut Tape is standard for automated pick-and-place assembly.

Q: Which part should I specify for a new design?

A: For new designs without specific legacy constraints, CMF55100R00FKEK is recommended due to ROHS3 compliance and REACH Unaffected status. If improved tolerance and temperature stability are design requirements, CMF55100R00DHR6 provides these enhancements while maintaining full compatibility.