Type A266T NTC Thermistor

Introduction

Amphenol Advanced Sensors’ Type A266T is an NTC chip thermistor temperature sensor built for accurate measurement in demanding environments. Its combination of specified interchangeability down to ±0.05°C, a stainless steel housing, and TFE-insulated lead wires makes it notable where sensor consistency, mechanical protection, and fluid exposure considerations matter.

What it does

The Type A266T is a precision solid-state temperature sensor based on NTC thermistor technology. As temperature changes, its resistance changes with a stated sensitivity greater than -4%/°C at 25°C, enabling temperature measurement, control, and compensation functions.

The sensor operates from -40°C to +105°C. Its stainless steel housing provides mechanical strength and fluid protection, while #30 AWG silver-plated copper leads with TFE insulation provide the electrical connection. The specified interchangeability of down to ±0.09°F (±0.05°C) supports designs that need closely matched sensor behavior.

Applications

Potential applications supported by the stated function and construction include:

• Temperature measurement and control in medical instrumentation
• IVD analyzers and blood-analysis equipment
• Dialysis equipment temperature monitoring
• Wearable skin-temperature sensing assemblies
• Surgical instruments requiring integrated temperature sensing
• Temperature-compensation circuits operating within the specified range

Design considerations

The Type A266T should be evaluated as a wired, housed thermistor element rather than as a board-mount package. Its #30 AWG silver-plated copper leads use TFE insulation, which should be accounted for in cable routing, termination, strain relief, and assembly processes.

The stainless steel housing is relevant for installations needing mechanical robustness and fluid protection. Designers should also ensure that the intended operating temperatures remain within the -40°C to +105°C range and select associated measurement circuitry appropriate for an NTC thermistor with sensitivity greater than -4%/°C at 25°C.

For applications relying on sensor-to-sensor consistency, the specified interchangeability down to ±0.05°C is a key parameter to consider alongside system calibration requirements.

Availability and further information

The source/distributor and datasheet links on this page provide further information on the Amphenol Advanced Sensors Type A266T NTC thermistor, including documentation for evaluating its electrical and mechanical characteristics in a specific design.