MMF003141 Rectangular Rosette Strain Gauge Equivalent & Substitute Parts

Part Overview

The MMF003141 is a rectangular rosette strain gauge manufactured by Micro-Measurements (Division of Vishay Precision Group), part of the CEA series. This component is designed for multi-directional strain measurement applications requiring ±5% measurement accuracy across three perpendicular axes. The part is classified as obsolete, necessitating identification of active equivalent components for ongoing procurement and new designs. The MMF003141 maintains full RoHS compliance and unlimited moisture sensitivity rating, making it suitable for industrial and aerospace applications within the specified temperature range.

Substiute Parts

MMF003141

Micro-Measurements (Division of Vishay Precision Group)In Stock: 696MMF003141 Datasheet

Current PartRFQ

MMF404268

Micro-Measurements (Division of Vishay Precision Group)In Stock: 968MMF404268 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for rectangular rosette strain gauges is determined by strict equivalence across the following critical parameters:

Mechanical Compatibility Parameters:

• Pattern type (rectangular rosette configuration)
• Active gauge length per section (0.125" / 3.18mm)
• Active gauge width per section (0.060" / 1.52mm)
• Overall pattern dimensions (0.300" × 0.560" / 7.62mm × 14.22mm)
• Overall envelope dimensions (0.42" × 0.62" / 10.7mm × 15.7mm)

Electrical Compatibility Parameters:

• Nominal resistance (350 Ohms)
• Strain measurement range (±5%)

Environmental & Compliance Parameters:

• Operating temperature range (minimum -75°C, maximum 175°C)
• RoHS compliance status
• Moisture sensitivity classification

The MMF404268 qualifies as a direct substitute based on identical mechanical dimensions, matching electrical specifications, overlapping temperature range, and equivalent environmental compliance. The transition from obsolete to active product status does not affect functional substitutability when all technical parameters remain within specification.

Parameter Comparison

Engineering Selection Recommendations

For Obsolete Part Replacement: The MMF404268 is the direct equivalent for MMF003141 applications. Both components share identical mechanical dimensions, electrical specifications, and environmental ratings. The MMF404268 offers improved resistance tolerance (±0.2% versus ±0.4%), which provides enhanced measurement precision without compromising compatibility.

Compliance Considerations: Both parts maintain RoHS compliance and unlimited moisture sensitivity classification, ensuring suitability for regulated industries and environments with variable humidity exposure. The operating temperature ranges are functionally equivalent, with both supporting -75°C to 175°C operation.

Procurement Status: The MMF404268 is currently in active production with confirmed inventory availability (915 pieces), whereas the MMF003141 is obsolete. For new designs and ongoing production requirements, the MMF404268 should be specified to ensure long-term supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can MMF404268 be used as a direct replacement for MMF003141 in existing assemblies?

A: Yes. The MMF404268 is mechanically and electrically identical to the MMF003141. All mounting dimensions, gauge dimensions, resistance values, and strain measurement ranges are equivalent. No circuit modifications or mechanical redesign is required.

Q: What is the difference between the resistance tolerances of these two parts?

A: The MMF003141 specifies ±0.4% resistance tolerance, while the MMF404268 specifies ±0.2%. The tighter tolerance of the MMF404268 represents improved manufacturing precision and does not affect backward compatibility. Applications requiring the original ±0.4% tolerance will operate within specification with the MMF404268.

Q: Are the temperature operating ranges equivalent?

A: Yes. The MMF003141 operates from -100°F to 350°F (-75°C to 175°C), and the MMF404268 operates from -103°F to 347°F (-75°C to 175°C). Both parts support the same effective temperature range for practical applications.

Q: Why is the MMF003141 listed as obsolete?

A: Product obsolescence reflects manufacturing lifecycle decisions by Micro-Measurements. The MMF404268 represents the current active equivalent, ensuring continued availability and support for this gauge configuration.

Q: Are packaging differences between these parts significant?

A: The MMF003141 packaging is not specified in the provided data. The MMF404268 is supplied in bulk packaging. For applications requiring specific packaging configurations, contact the manufacturer directly.

Q: Do both parts meet RoHS compliance requirements?

A: Yes. Both the MMF003141 and MMF404268 are RoHS compliant and carry MSL 1 (unlimited) moisture sensitivity rating, making them suitable for regulated applications and standard industrial environments.