MF1/4DC6191F Equivalent & Substitute Parts

Part Overview

The MF1/4DC6191F is a 6.19 kOhms ±1% 0.25W through-hole axial resistor manufactured by KOA Speer Electronics, Inc. This metal film resistor is designed for automotive applications and meets AEC-Q200 qualification standards. The component is currently in active production status with 1,122 pieces available in inventory. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are required for procurement flexibility, design redundancy, or supply chain continuity.

Substiute Parts

MF1/4DC6191F

KOA Speer Electronics, Inc.In Stock: 1181MF1/4DC6191F Datasheet

Current PartRFQ

MFR-25FBF52-6K19

YAGEOIn Stock: 13732MFR-25FBF52-6K19 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MF1/4DC6191F is determined by strict equivalence across the following critical parameters:

• Resistance value: 6.19 kOhms (exact match required)
• Tolerance: ±1% (no deviation permitted)
• Power rating: 0.25W, 1/4W (exact match required)
• Composition: Metal Film (required for performance characteristics)
• Package: Axial through-hole configuration (mechanical compatibility)
• Temperature coefficient: ±100ppm/°C (thermal stability requirement)
• Operating temperature range: -55°C to +155°C (environmental compatibility)
• Regulatory compliance: ROHS3 and REACH status alignment

The MFR-25FBF52-6K19 manufactured by YAGEO meets all substitution criteria and is classified as a direct equivalent part.

Parameter Comparison

Engineering Selection Recommendations

Both the MF1/4DC6191F and MFR-25FBF52-6K19 are active production components with full regulatory compliance. Selection between these parts may be based on:

• Inventory availability and lead time requirements
• Supply chain sourcing preferences
• Physical dimension tolerance for PCB layout (diameter variance of 0.003" / 0.10mm)
• Manufacturer qualification requirements for specific applications

Both parts satisfy automotive-grade requirements through ROHS3 compliance and REACH unaffected status. The MF1/4DC6191F carries explicit AEC-Q200 automotive qualification, while the MFR-25FBF52-6K19 meets equivalent electrical and environmental specifications.

Frequently Asked Questions (FAQ)

Q: Can MFR-25FBF52-6K19 be used as a direct replacement for MF1/4DC6191F?

A: Yes. Both parts are electrically and mechanically equivalent with identical resistance value (6.19 kOhms), tolerance (±1%), power rating (0.25W), composition (metal film), package type (axial), temperature coefficient (±100ppm/°C), and operating range (-55°C to +155°C). Physical dimensions are nearly identical with only minor diameter variation (0.003" difference).

Q: What is the significance of the ±1% tolerance specification?

A: The ±1% tolerance indicates the maximum deviation of the actual resistance value from the nominal 6.19 kOhms specification. This tight tolerance is critical for precision circuit applications and is maintained identically across both the primary and substitute part.

Q: Are there any differences in automotive qualification between these parts?

A: The MF1/4DC6191F explicitly carries AEC-Q200 automotive qualification. The MFR-25FBF52-6K19 does not list explicit AEC-Q200 designation in the provided specifications. Both parts meet ROHS3 and REACH compliance requirements suitable for automotive environments.

Q: How do the physical dimensions affect PCB compatibility?

A: Both parts use standard axial through-hole packaging with identical length (0.248" / 6.30mm). The diameter difference (0.091" vs 0.094") is 0.003" (0.10mm) and does not affect standard PCB hole spacing or mounting compatibility for typical through-hole designs.

Q: What does the temperature coefficient ±100ppm/°C specification mean?

A: The temperature coefficient indicates the resistance value will change by a maximum of 100 parts per million for each degree Celsius change in operating temperature. Both parts maintain identical thermal stability across the -55°C to +155°C operating range.