CEA-00-125UT-350 Strain Gauge Equivalent & Substitute Parts

Part Overview

The CEA-00-125UT-350 is a Tee Rosette strain gauge manufactured by Micro-Measurements (Division of Vishay Precision Group). This component is classified as obsolete, indicating it is no longer in active production. The gauge features a ±5% strain range with 350 Ohms resistance and is designed for applications requiring three-axis strain measurement in a compact tee rosette configuration.

Due to its obsolete status, identifying equivalent substitute parts is essential for maintaining system compatibility and ensuring continued availability for repair, replacement, and new design implementations. The substitute identified maintains functional and electrical equivalence while offering active product status.

Key Parameters

Parameter	Value
Pattern Type	Tee Rosette
Strain Range	±5%
Resistance	350 Ohms
Resistance Tolerance	±0.4%
Active Length	0.125" (3.18mm)
Active Width	0.165" (4.19mm)
Overall Length	0.42" (10.7mm)
Overall Width	0.45" (11.4mm)
Operating Temperature Range	-100 ~ 350°F (-75 ~ 175°C)
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the CEA-00-125UT-350 is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

Resistance value: 350 Ohms
Resistance tolerance: ±0.4%
Strain range: ±5%

Mechanical Parameters:

Pattern type: Tee Rosette (three-axis measurement configuration)
Active dimensions: 0.125" length × 0.165" width per section
Overall pattern dimensions: 0.325" × 0.365"
Overall envelope: 0.42" × 0.45"

Environmental Parameters:

Operating temperature range: -100 ~ 350°F (-75 ~ 175°C)
Moisture sensitivity level: 1 (Unlimited)

The substitute part MMF404019 maintains complete equivalence across all specified parameters, with the distinction that it is classified as an active product with bulk packaging availability.

Parameter Comparison

Parameter	CEA-00-125UT-350 (Main Part)	MMF404019 (Substitute)	Equivalence
Manufacturer	Micro-Measurements (Vishay)	Micro-Measurements (Vishay)	Identical
Series	CEA	CEA	Identical
Pattern Type	Tee Rosette	Tee Rosette	Identical
Strain Range	±5%	±5%	Identical
Resistance	350 Ohms	350 Ohms	Identical
Resistance Tolerance	±0.4%	±0.4%	Identical
Active Length	0.125" (3.18mm)	0.125" (3.18mm) per section	Identical
Active Width	0.165" (4.19mm)	0.165" (4.19mm) per section	Identical
Overall Pattern Length	0.325" (8.26mm)	0.325" (8.26mm)	Identical
Overall Pattern Width	0.365" (9.27mm)	0.365" (9.27mm)	Identical
Overall Length	0.42" (10.7mm)	0.42" (10.7mm)	Identical
Overall Width	0.45" (11.4mm)	0.45" (11.4mm)	Identical
Operating Temperature	-100 ~ 350°F (-75 ~ 175°C)	-100 ~ 350°F (-75 ~ 175°C)	Identical
MSL Rating	1 (Unlimited)	1 (Unlimited)	Identical
Product Status	Obsolete	Active	Substitute is active
Packaging	Not specified	Bulk	Bulk packaging available

Engineering Selection Recommendations

The MMF404019 strain gauge is the direct equivalent substitute for the obsolete CEA-00-125UT-350. Selection of this substitute is based on the following engineering criteria:

Product Status Alignment: The substitute part maintains active product status with Micro-Measurements, ensuring continued manufacturing support, quality assurance, and long-term availability. This addresses the obsolescence risk associated with the original part.

Electrical and Mechanical Equivalence: All critical electrical parameters (350 Ohms resistance, ±0.4% tolerance, ±5% strain range) and mechanical dimensions (active and overall envelope) are identical between the main part and substitute. This ensures direct functional compatibility in existing circuit designs and mechanical assemblies.

Environmental Compliance: Both parts share identical operating temperature ranges (-100 ~ 350°F / -75 ~ 175°C) and moisture sensitivity ratings (MSL 1 - Unlimited), confirming suitability for equivalent environmental applications.

Packaging Availability: The substitute is available in bulk packaging, supporting both production quantities and replacement stock requirements.

Frequently Asked Questions (FAQ)

Q: Can MMF404019 be used as a direct replacement for CEA-00-125UT-350 in existing designs?

A: Yes. The MMF404019 is electrically and mechanically equivalent to the CEA-00-125UT-350 across all specified parameters. Both parts share identical resistance values, strain ranges, active dimensions, and operating temperature ranges. Direct substitution is supported without circuit or mechanical redesign.

Q: What is the primary difference between these two parts?

A: The CEA-00-125UT-350 is classified as obsolete, while the MMF404019 is an active product. The MMF404019 is available in bulk packaging. All functional and electrical specifications remain identical.

Q: Are there any compatibility concerns when switching from CEA-00-125UT-350 to MMF404019?

A: No compatibility concerns exist. Both parts are manufactured by Micro-Measurements and belong to the same CEA series. Electrical characteristics, mechanical envelope, and environmental ratings are identical, ensuring seamless integration into existing applications.

Q: What does MSL 1 (Unlimited) mean for these strain gauges?

A: MSL 1 (Unlimited) indicates that these components have unlimited shelf life and do not require special moisture-controlled storage conditions. This classification applies to both the main part and substitute.

Q: Are the dimensional specifications identical between both parts?

A: Yes. Active dimensions (0.125" × 0.165"), overall pattern dimensions (0.325" × 0.365"), and overall envelope (0.42" × 0.45") are identical for both the CEA-00-125UT-350 and MMF404019. Both parts fit the same mechanical footprint.

Q: What is the resistance tolerance specification?

A: Both parts have a resistance tolerance of ±0.4% at 350 Ohms nominal resistance. This tight tolerance ensures consistent performance across multiple gauge installations in rosette configurations.

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