CMF5547R500FKBF39 Equivalent & Substitute Parts

Part Overview

The CMF5547R500FKBF39 is a 47.5 Ohm, 0.5W metal film through-hole resistor manufactured by Vishay Dale. This axial component features flame retardant coating and moisture resistance, designed for applications requiring precision resistive elements in through-hole configurations. The part is currently active in production with 744 units in stock. Substitute parts are identified when equivalent electrical and mechanical specifications are maintained across the same product series, enabling procurement flexibility and supply chain continuity.

Substiute Parts

CMF5547R500FKBF39

Vishay DaleIn Stock: 844CMF5547R500FKBF39 Datasheet

Current PartRFQ

CMF5547R500FKEK

Vishay DaleIn Stock: 920CMF5547R500FKEK Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CMF5547R500FKBF39 are identified based on strict equivalence of the following parameters:

• Resistance value: 47.5 Ohms
• Tolerance: ±1%
• Power rating: 0.5W
• 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
• Features: Flame retardant coating, moisture resistant, safety rated

The CMF5547R500FKEK meets all these criteria and is classified as a parametric equivalent within the CMF series. Substitution is valid when these electrical and mechanical specifications are required for the application.

Parameter Comparison

Engineering Selection Recommendations

Both the CMF5547R500FKBF39 and CMF5547R500FKEK are electrically and mechanically equivalent for applications requiring 47.5 Ohm, 0.5W metal film axial resistors with ±1% tolerance and ±100ppm/°C temperature coefficient.

The CMF5547R500FKEK offers improved regulatory compliance status: it is ROHS3 compliant and REACH unaffected, compared to the CMF5547R500FKBF39 which is RoHS non-compliant and REACH affected. Selection between these parts should be based on regulatory requirements applicable to the end application and target market.

Both parts maintain identical electrical performance, thermal characteristics, and physical form factor, ensuring direct substitution capability in circuit designs.

Frequently Asked Questions (FAQ)

Q: Can CMF5547R500FKEK be used as a direct replacement for CMF5547R500FKBF39?

A: Yes. Both parts are parametric equivalents with identical resistance, tolerance, power rating, temperature coefficient, operating temperature range, and physical dimensions. Direct substitution is valid from an electrical and mechanical standpoint.

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

A: The primary differences are regulatory compliance certifications. The CMF5547R500FKEK is ROHS3 compliant and REACH unaffected, while the CMF5547R500FKBF39 is RoHS non-compliant and REACH affected. Electrical and mechanical specifications are identical.

Q: Are there any package or form factor differences?

A: No. Both parts use identical axial packaging with the same physical dimensions of 0.090" diameter by 0.240" length (2.29mm x 6.10mm). They are mechanically interchangeable in PCB layouts and through-hole applications.

Q: Which part should be selected for new designs?

A: Selection depends on regulatory requirements. For applications requiring ROHS3 compliance or REACH compliance, the CMF5547R500FKEK is the appropriate choice. Both parts are active products with adequate inventory availability.

Q: Do these resistors have any special handling requirements?

A: Both parts feature flame retardant coating and moisture resistance. Standard through-hole component handling practices apply. Moisture sensitivity level is not applicable for these parts.