MMF25SFRE47K Equivalent & Substitute Parts

Part Overview

The MMF25SFRE47K is a 47 kOhms ±1% metal film chip resistor in MELF 0204 package format, rated for 0.25W (1/4W) operation across -55°C to 155°C. Manufactured by YAGEO and compliant with ROHS3 and REACH standards, this component is actively produced. Substitute parts may be required due to inventory constraints, application-specific performance requirements, or design optimization for enhanced reliability in demanding environments.

Substiute Parts

MMF25SFRE47K

YAGEOIn Stock: 853MMF25SFRE47K Datasheet

Current PartRFQ

MMA02040C4702FB300

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 13832MMA02040C4702FB300 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MMF25SFRE47K is determined by the following critical parameters:

• Resistance Value: Must be 47 kOhms
• Tolerance: Must be ±1%
• Package / Case: Must be MELF 0204 format
• Temperature Coefficient: Must be ±50ppm/°C or better
• Operating Temperature Range: Must support -55°C to 155°C minimum
• Compliance: Must maintain ROHS3 and REACH compliance

The substitute part MMA02040C4702FB300 meets all substitution criteria. While it features a higher power rating (0.4W vs. 0.25W) and thin film composition with anti-sulfur and AEC-Q200 automotive qualification, these enhancements are compatible with applications designed for the MMF25SFRE47K and do not introduce incompatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the MMF25SFRE47K and MMA02040C4702FB300 are active production components with full ROHS3 and REACH compliance. Selection between these parts should be based on application requirements:

The MMF25SFRE47K is suitable for standard industrial and consumer applications where the 0.25W power rating is sufficient and cost optimization is prioritized.

The MMA02040C4702FB300 is appropriate for applications requiring enhanced reliability, automotive environments (AEC-Q200 certified), or designs where the higher 0.4W power rating provides additional thermal margin. The anti-sulfur feature provides protection in corrosive environments. The minimal dimensional difference (0.004" length increase) is negligible for standard PCB layouts.

Frequently Asked Questions (FAQ)

Q: Can MMA02040C4702FB300 directly replace MMF25SFRE47K in existing designs?

A: Yes. Both components share identical resistance, tolerance, temperature coefficient, operating temperature range, package format (MELF 0204), and compliance certifications. The higher power rating and thin film composition of the substitute are backward-compatible with applications designed for the original part.

Q: What is the significance of the power rating difference (0.25W vs. 0.4W)?

A: The higher power rating of MMA02040C4702FB300 indicates greater thermal dissipation capability. This does not create incompatibility; it provides additional margin. Applications designed for 0.25W operation will function correctly with a 0.4W-rated component.

Q: Are there dimensional compatibility concerns?

A: The length difference is 0.004" (0.10mm). Both components use identical MELF 0204 package specifications and will fit standard PCB footprints without modification.

Q: What does AEC-Q200 certification mean for non-automotive applications?

A: AEC-Q200 is an automotive qualification standard indicating enhanced reliability testing and performance validation. Non-automotive applications benefit from this certification as it demonstrates higher quality and reliability standards than typical industrial components.

Q: Why would anti-sulfur treatment be relevant?

A: Anti-sulfur treatment protects against sulfur-induced corrosion in environments with hydrogen sulfide exposure or high-sulfur industrial atmospheres. For standard indoor applications, this feature provides no additional benefit but introduces no penalty.