MFR-25FBF52-549R Equivalent & Substitute Parts

Part Overview

The MFR-25FBF52-549R is a 549 Ohm ±1% metal film axial through-hole resistor rated at 0.25W (1/4W) manufactured by YAGEO. This component is actively produced and widely used in general-purpose electronic circuits requiring standard tolerance resistive elements. Substitute parts are identified to provide alternatives for procurement flexibility, inventory management, or when enhanced performance specifications are required.

Substiute Parts

MFR-25FBF52-549R

YAGEOIn Stock: 9931MFR-25FBF52-549R Datasheet

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YR1B549RCC

TE Connectivity Passive ProductIn Stock: 2388YR1B549RCC Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The YR1B549RCC from TE Connectivity Passive Product qualifies as a direct substitute based on the following critical parameters:

• Resistance Value: Both parts are 549 Ohms
• Power Rating: Both are rated at 0.25W (1/4W)
• Composition: Both are metal film construction
• Package Type: Both use axial through-hole configuration
• Termination Count: Both have 2 terminations
• Mechanical Compatibility: Physical dimensions are compatible (axial lead spacing and diameter allow interchangeability in standard PCB layouts)

The YR1B549RCC offers enhanced specifications including tighter tolerance (±0.1% vs ±1%) and improved temperature coefficient (±15ppm/°C vs ±100ppm/°C), making it suitable for applications requiring higher precision without compromising form factor or mounting compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the MFR-25FBF52-549R and YR1B549RCC are active products with current manufacturing status and full regulatory compliance. Selection between these parts should be based on application requirements:

• MFR-25FBF52-549R: Suitable for general-purpose applications where standard ±1% tolerance and ±100ppm/°C temperature coefficient are acceptable. Bulk packaging availability supports high-volume procurement.

• YR1B549RCC: Appropriate for precision circuits requiring tighter tolerance control (±0.1%) and superior temperature stability (±15ppm/°C). Extended lower operating temperature limit (-65°C) provides additional margin for extreme environment applications. Cut tape packaging supports automated assembly processes.

Both parts maintain identical power ratings, axial form factors, and mechanical compatibility for direct PCB substitution.

Frequently Asked Questions (FAQ)

Q: Can YR1B549RCC replace MFR-25FBF52-549R in existing designs?

A: Yes. Both parts share identical resistance values, power ratings, and axial package configurations. Physical dimensions are compatible with standard PCB layouts. The YR1B549RCC offers superior tolerance and temperature coefficient specifications.

Q: What are the key differences between these parts?

A: The primary differences are tolerance (±1% vs ±0.1%), temperature coefficient (±100ppm/°C vs ±15ppm/°C), and packaging format (bulk vs cut tape). Mechanical dimensions are nearly identical with negligible diameter variation (0.094" vs 0.091").

Q: Are both parts RoHS compliant?

A: Yes. MFR-25FBF52-549R is ROHS3 Compliant, and YR1B549RCC is RoHS Compliant. Both meet environmental regulatory requirements.

Q: Which part should be selected for high-precision applications?

A: YR1B549RCC is recommended for applications requiring precision resistive elements due to its ±0.1% tolerance and ±15ppm/°C temperature coefficient compared to the standard ±1% and ±100ppm/°C specifications of the MFR-25FBF52-549R.

Q: Are there packaging considerations for assembly?

A: MFR-25FBF52-549R is supplied in bulk packaging suitable for manual or semi-automated assembly. YR1B549RCC is supplied in cut tape format optimized for automated pick-and-place assembly processes.