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KTY81-220 from INFINEON

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KTY81-220

Manufacturer: INFINEON

Silicon temperature sensors

Partnumber Manufacturer Quantity Availability
KTY81-220,KTY81220 INFINEON 122573 In Stock

Description and Introduction

Silicon temperature sensors The KTY81-220 is a silicon temperature sensor manufactured by Infineon.  

### **Specifications:**  
- **Temperature Range:** -55°C to +150°C  
- **Nominal Resistance (R25):** 220 Ω ±1% at 25°C  
- **Temperature Coefficient:** Positive (resistance increases with temperature)  
- **Accuracy:** ±0.8°C at 25°C, ±2.5°C over full range  
- **Supply Current:** Typically 1 mA (depends on application circuit)  
- **Package:** SMD (SOD-70) or through-hole (TO-92)  

### **Descriptions & Features:**  
- Silicon-based PTC (Positive Temperature Coefficient) sensor  
- Linear resistance-temperature characteristic  
- High accuracy and stability  
- Suitable for automotive, industrial, and consumer applications  
- Robust and long-term reliable  
- Compatible with standard measurement circuits  

For detailed electrical characteristics and application notes, refer to the official Infineon datasheet.

Application Scenarios & Design Considerations

Silicon temperature sensors

Alternative Part Number

  • PTC-SG-220 --: Silicon PTC temperature sensor with similar 2 kOhm nominal resistance and positive temperature coefficient, suitable drop-in replacement for temperature sensing circuits.
  • TFPT2200 --: Platinum-film PTC thermistor with comparable resistance range and linear temperature response, offering higher accuracy than the original KTY series.
  • B59010-D1220-A040 --: PTC thermistor with similar resistance characteristics and temperature coefficient, widely used as an alternative in temperature compensation and sensing applications.

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