PRECISION COMPONENTS High precision measurement for extreme temperature environments

From YAGEO 3 min Reading Time

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As electronic systems push into harsher environments and tighter form factors, temperature measurement is no longer a secondary consideration; it is a critical design parameter. From medical devices and robotics to AI server cooling and solar energy systems, engineers need sensors that deliver absolute accuracy, long-term stability, and fast response, even under extreme thermal conditions. Yageos M308 wired Pt-RTD is designed precisely for these demands.

The M308 Pt-RTD delivers precise, fast, and stable temperature measurement even in extreme environments and miniature form factors.(Source:  Yageo)
The M308 Pt-RTD delivers precise, fast, and stable temperature measurement even in extreme environments and miniature form factors.
(Source: Yageo)

Platinum resistance temperature detectors (Pt-RTDs) remain the gold standard for precision temperature sensing. Defined by DIN EN 60751, Pt-RTDs offer a highly linear and repeatable relationship between resistance and temperature, making them ideal for applications where accuracy and reliability cannot be compromised. The M308 builds on this foundation with a design optimized for extreme temperatures, miniature integration, and long operational life.

M308: Designed for Accuracy Across a Wide Temperature Range

The M308 wired Pt-RTD supports continuous temperature measurement from –70 °C to +500 °C, with short-term exposure up to +550 °C. This wide operating window allows engineers to cover applications that would otherwise require multiple sensing technologies.

Available in PT100 and PT1000 nominal resistance values, the M308 supports flexible interface design while maintaining standardized, predictable output behavior.

Key Performance Advantages

  • Highest measurement accuracy with tolerance class F 0.3
  • Minimal signal drift, even over years or decades of operation
  • Excellent linearity, simplifying signal conditioning electronics
  • Extremely fast response time, critical for dynamic thermal systems

One of the most distinctive advantages of the M308 is its exceptionally small form factor. The sensor fits into tubes with an inner diameter of less than 1 mm, enabling temperature measurement in locations that were previously inaccessible.

This makes the M308 especially valuable in:

  • Medical instruments and probes
  • Wearable and compact electronics
  • Dense robotics assemblies
  • Advanced cooling solutions for AI servers

In many applications, replacing a temperature sensor is costly or simply not possible. The M308 is engineered for long service life, maintaining stable electrical characteristics over extended periods and repeated thermal cycling.

This reliability is critical in applications such as:

  • Solar energy systems exposed to wide temperature swings
  • Industrial automation and robotics
  • High-uptime computing infrastructure

The M308 supports a wide range of connection and assembly methods, giving designers freedom to match the sensor to their manufacturing process and operating conditions.

Supported connection techniques include:

  • Welding
  • Brazing
  • Crimping
  • Soft soldering (L-types)

This flexibility allows the M308 to be integrated into both high-temperature industrial assemblies and precision electronic modules.

The M308 is part of a comprehensive temperature sensing platform that spans –200 °C to +1,000 °C, including:

  • Wired and leadless Pt-RTD elements
  • SMD RTDs in standard packages (1206, 0805, 0603)
  • Multiple resistance and tolerance classes

This breadth enables consistent sensor selection across platforms, from prototype to high-volume production.

Quick Facts

  • Nominal resistance: 100 and 1000Ohm
  • Class: F 0.3 according to DIN EN 60751
  • Operating temperature: -70 °C to 500 °C / Short term 550 °C

Features

  • <1mm installation diameter
  • Fastest Response time
  • Pb-Free
  • 1000h @500°C tested
  • Other tolerances, values of resistance and wire lengths are available on request

Target Applications

  • Medical devices
  • Battery control
  • Solar cells
  • AI cooling server
  • Wearables
  • Robotics

The solution provides precise temperature detection with very short response times, enabling accurate monitoring even in highly dynamic applications. It delivers stable performance over many years of operation with minimal signal drift, maintaining reliability under strong vibration and shock conditions. Thanks to its compact design, it is suitable for tube inner diameters below 1 mm and is compatible with welding, brazing, or crimping processes.

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