The KTY82/221 is a silicon PTC (Positive Temperature Coefficient) temperature sensor from Micron Technology Inc. (though originally a Philips Semiconductors product, now NXP). It is a resistor whose resistance increases with increasing temperature, providing a predictable and relatively linear response over a specific temperature range.

Applications:

• Temperature Measurement
• Overheating Protection
• Temperature Compensation
• Automotive electronics (e.g., engine temperature monitoring)
• Industrial temperature control systems

Features:

• Positive Temperature Coefficient: Resistance increases with temperature.
• Relatively Linear Response: Provides a predictable resistance change over a specific range.
• Small Size: Allows for easy integration into various applications.
• Robust Construction: Offers reliable performance in harsh environments.
• Directly Compatible with Electronic Circuits: Simple interface for temperature sensing.

Benefits:

• Accurate Temperature Sensing: Provides reliable temperature information for control and monitoring.
• Overheating Protection: Can be used to trigger safety mechanisms when temperatures exceed a threshold.
• Simplified Circuit Design: Easy to integrate into electronic circuits without complex signal conditioning.
• Cost-Effective: Offers a simple and affordable solution for temperature sensing.
• Wide Temperature Range: Operates over a broad temperature range, suitable for various applications.

Additional Details:

The KTY82/221 has a resistance value at 25°C (R25) that is specifically defined in its datasheet. Its temperature coefficient determines the rate at which the resistance changes with temperature. The operating temperature range and the maximum allowable current should be carefully considered in the design. This sensor is typically packaged in a small, radial-leaded package for easy mounting. The KTY82 series are known for their stability and reliability in a variety of temperature sensing applications. Always consult the official NXP (or current manufacturer) datasheet for accurate specifications and application guidelines before using this sensor in a design.