MMF204FRE6K81 Equivalent & Substitute Parts

Part Overview

The MMF204FRE6K81 is a 6.81 kOhms ±1% metal film chip resistor in MELF 0204 package format, rated for 0.4W power dissipation. This component is designed for precision applications requiring stable resistance values across temperature ranges from -55°C to 155°C. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained within the defined parameter tolerances.

Substiute Parts

MMF204FRE6K81

YAGEOIn Stock: 706MMF204FRE6K81 Datasheet

Current PartRFQ

MMA02040C6801FB300

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 10503MMA02040C6801FB300 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MMF204FRE6K81 is determined by strict alignment of the following parameters:

• Resistance Value: Nominal value must be 6.8 kOhms or 6.81 kOhms within ±1% tolerance band
• Tolerance: ±1% tolerance required for precision circuit applications
• Power Rating: 0.4W minimum rating to maintain thermal performance specifications
• Package Format: MELF 0204 mechanical compatibility for PCB footprint alignment
• Temperature Coefficient: ±50ppm/°C stability requirement across operating range
• Operating Temperature: -55°C to 155°C minimum range coverage
• Compliance: RoHS3 compliance and MSL 1 rating mandatory for supply chain compatibility

The substitute part MMA02040C6801FB300 meets all substitution criteria through equivalent electrical performance and mechanical form factor compatibility.

Parameter Comparison

Engineering Selection Recommendations

The MMA02040C6801FB300 qualifies as a direct substitute based on electrical parameter equivalence and mechanical compatibility. Both components maintain identical tolerance, power rating, temperature coefficient, and operating temperature specifications. The resistance value difference (6.81 kOhms vs 6.8 kOhms) falls within the ±1% tolerance specification, ensuring functional interchangeability in circuit applications.

Both parts carry Active product status with full RoHS3 compliance and REACH unaffected designation. The substitute part includes AEC-Q200 automotive qualification and anti-sulfur coating features, providing additional environmental protection without compromising compatibility. Mechanical dimensions remain within MELF 0204 package specifications, confirming PCB footprint compatibility.

Frequently Asked Questions (FAQ)

Q: Can MMA02040C6801FB300 be used as a direct replacement for MMF204FRE6K81?

A: Yes. Both components meet the substitution criteria: identical tolerance (±1%), power rating (0.4W), temperature coefficient (±50ppm/°C), operating temperature range (-55°C to 155°C), and MELF 0204 package format. The resistance values (6.81 kOhms and 6.8 kOhms) are equivalent within the ±1% tolerance band.

Q: What is the significance of the thin film vs. metal film composition difference?

A: Both metal film and thin film compositions meet the specified electrical parameters for this application. Thin film technology, as used in the substitute part, provides equivalent temperature stability (±50ppm/°C) and tolerance performance (±1%) required for circuit functionality.

Q: Are the dimensional differences between the two parts significant?

A: No. The length difference (0.138" vs 0.142", or 4.60mm vs 3.60mm) is within acceptable mechanical tolerance for MELF 0204 package specifications. Both components maintain identical 0.055" diameter (1.40mm) and are mechanically compatible with standard MELF 0204 PCB footprints.

Q: Does the AEC-Q200 rating on the substitute part affect compatibility?

A: No. AEC-Q200 automotive qualification is an additional certification that does not impact electrical or mechanical compatibility. The substitute part meets or exceeds all baseline specifications of the original component.

Q: Are both parts suitable for the same operating temperature range?

A: Yes. Both components are rated for -55°C to 155°C operating temperature range with identical ±50ppm/°C temperature coefficient, ensuring equivalent thermal performance across all specified conditions.