C2A-13-125LW-350 Strain Gauge Equivalent & Substitute Parts

Part Overview

The MMF307449 C2A-13-125LW-350 is a linear strain gauge manufactured by Micro-Measurements (Division of Vishay Precision Group). This component is classified as obsolete and is used for precision strain measurement applications requiring a ±3% strain range with 350 Ohms resistance. The active sensing element measures 0.125" (3.18mm) in length and 0.070" (1.78mm) in width, designed for applications operating between -60°F and 180°F (-50°C to 80°C).

Due to its obsolete product status, locating replacement inventory from original sources becomes increasingly difficult. Identifying equivalent substitute parts ensures continuity of supply for maintenance, repair, and new production requirements.

Substiute Parts

MMF307449

Micro-Measurements (Division of Vishay Precision Group)In Stock: 1163MMF307449 Datasheet

Current PartRFQ

MMF404143

Micro-Measurements (Division of Vishay Precision Group)In Stock: 1014MMF404143 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of strain gauges is determined by compatibility across the following critical parameters:

Primary Substitution Criteria:

• Manufacturer: Same manufacturer (Micro-Measurements) ensures consistent material composition, adhesive systems, and performance characteristics
• Pattern Type: Linear pattern maintains identical measurement axis orientation
• Resistance Value: 350 Ohms electrical specification for circuit compatibility
• Active Dimensions: 0.125" length and 0.070" width define the sensing element footprint and spatial constraints
• Strain Range: ±3% establishes the measurement capability envelope
• Operating Temperature: -60°F to 180°F (-50°C to 80°C) defines thermal operating limits

The substitute part MMF404143 (C4A-13 Linear Strain Gauge) is identified as a manufacturer-recommended alternative. This part maintains the same manufacturer source and linear pattern type, ensuring baseline compatibility for applications requiring strain gauge replacement.

Parameter Comparison

Engineering Selection Recommendations

For MMF307449 C2A-13-125LW-350 Replacement:

The MMF404143 C4A-13 Linear Strain Gauge is designated as the manufacturer-recommended substitute. This selection is based on:

1. Manufacturer Continuity: Both parts originate from Micro-Measurements (Division of Vishay Precision Group), ensuring consistent manufacturing standards and material specifications.

2. Pattern Type Alignment: Both components feature linear pattern configuration, maintaining identical measurement axis orientation for direct functional replacement.

3. Product Status Advantage: The MMF404143 holds Active product status, ensuring ongoing availability and manufacturer support, contrasting with the Obsolete status of the MMF307449.

4. Compliance Enhancement: The substitute part carries RoHS Compliant certification and Moisture Sensitivity Level 1 (Unlimited), providing improved environmental compliance compared to the original part's unspecified compliance status.

5. Manufacturer Recommendation: The MMF404143 is explicitly identified as the manufacturer-recommended part number for this application category.

Critical Verification Requirement: Complete electrical and mechanical parameter specifications for the MMF404143 must be obtained from the manufacturer datasheet to confirm full compatibility with the original MMF307449 specifications, particularly regarding strain range, resistance value, active dimensions, and operating temperature range.

Frequently Asked Questions (FAQ)

Q1: Why is the C2A-13-125LW-350 listed as obsolete?

A: The MMF307449 C2A-13-125LW-350 carries an Obsolete product status designation from Micro-Measurements. Obsolete classification indicates that the manufacturer has discontinued active production and support for this part number. While current inventory of 1123 pieces remains available, future procurement from original sources cannot be guaranteed.

Q2: What makes the MMF404143 a suitable substitute for the MMF307449?

A: The MMF404143 C4A-13 is designated as the manufacturer-recommended substitute. Both parts are manufactured by Micro-Measurements and feature linear strain gauge patterns. The substitute part maintains Active product status, ensuring ongoing availability and manufacturer technical support.

Q3: Are the electrical specifications identical between the two parts?

A: The provided data confirms that both parts originate from the same manufacturer and share linear pattern type. However, complete electrical specifications (strain range, resistance value, resistance tolerance) for the MMF404143 are not included in the available documentation. Detailed comparison requires access to the complete MMF404143 datasheet.

Q4: What are the key dimensional considerations for substitution?

A: The MMF307449 features an active sensing element of 0.125" (3.18mm) length and 0.070" (1.78mm) width. These dimensions define the physical footprint and spatial constraints for mounting. The MMF404143 dimensional specifications are not provided in the available data and must be verified against application space requirements.

Q5: Does the substitute part offer improved environmental compliance?

A: The MMF404143 carries RoHS Compliant certification and Moisture Sensitivity Level 1 (Unlimited), compared to the MMF307449 which does not specify these compliance attributes. This represents an improvement in environmental and handling compliance standards.

Q6: What operating temperature range should be expected from the substitute part?

A: The MMF307449 operates across -60°F to 180°F (-50°C to 80°C). The operating temperature specification for the MMF404143 is not provided in the available documentation and must be confirmed through the manufacturer datasheet.

Q7: How should I proceed with part selection?

A: Obtain the complete technical datasheet for the MMF404143 from Micro-Measurements. Compare all electrical parameters (strain range, resistance, tolerance), mechanical dimensions (active length and width, overall pattern dimensions), and operating specifications (temperature range, thermal characteristics) against the MMF307449 requirements. Confirm that all parameters fall within acceptable ranges for your specific application before implementing the substitution.