Equivalent & Substitute Parts for Vishay Dale CMF557R5000FKBF

Part Overview

The Vishay Dale CMF557R5000FKBF is a metal film axial through-hole resistor rated at 7.5 Ohms ±1% tolerance, with a power handling of 0.5W (1/2W). The resistor features a flame retardant coating, moisture resistance, and enhanced safety characteristics. This part is classified as obsolete, making it necessary to identify equivalent substitutes that match its electrical and mechanical specifications for continued design support and maintenance.

Substiute Parts

CMF557R5000FKBF

Vishay DaleIn Stock: 1038CMF557R5000FKBF Datasheet

Current PartRFQ

CMF557R5000FKEK

Vishay DaleIn Stock: 1024CMF557R5000FKEK Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution is allowed strictly when the following parameters are identical or fully matched:

• Resistance value
• Tolerance
• Power rating
• Composition (Metal Film)
• Key features: flame retardant coating, moisture resistance, safety
• Temperature coefficient
• Operating temperature range
• Mechanical dimensions and axial package type
• Number of terminations

Equivalent and substitute parts must also comply with the same regulatory and certification statuses where applicable. Only parts conforming to these explicit criteria are considered in substitution.

Parameter Comparison

Engineering Selection Recommendations

The main part CMF557R5000FKBF is classified as obsolete. Its listed substitute, CMF557R5000FKEK, matches all key electrical, mechanical, and performance parameters. CMF557R5000FKEK provides improved regulatory compliance (ROHS3 Compliant) compared to the obsolete main part (RoHS non-compliant), while both parts are REACH Affected. CMF557R5000FKEK is the parametric equivalent and currently active within the same series and base product number.

Frequently Asked Questions (FAQ)

Q1: Can CMF557R5000FKEK directly replace CMF557R5000FKBF in existing designs?
A1: Yes. All critical electrical parameters and mechanical dimensions are identical. Both parts share the same features and temperature ratings, making CMF557R5000FKEK a direct substitute.

Q2: Is the axial package and size exactly matched between CMF557R5000FKBF and CMF557R5000FKEK?
A2: Yes. Both parts feature an axial package with dimensions of 0.090" Dia x 0.240" L (2.29mm x 6.10mm).

Q3: Are there differences in regulatory compliance between the main part and the substitute?
A3: CMF557R5000FKEK is ROHS3 Compliant, while CMF557R5000FKBF is RoHS non-compliant. Both are REACH Affected.

Q4: Is the substitution limited to the CMF55 series and base product number?
A4: Yes. Substitution is only validated within the same series and base product number, ensuring full electrical and mechanical equivalence.

Q5: What considerations are relevant for inventory management and long-term availability?
A5: Only active and parametric equivalent parts (such as CMF557R5000FKEK) should be used to replace obsolete parts like CMF557R5000FKBF for future procurement and design continuity.