You can find these components through specialized electronics distributors or general retailers:
For high precision and bulk orders, sites like Mouser Electronics, Newark/element14 , and LionCircuits carry top brands. buy ntc thermistor
For precision sensing, look for ±1% . General-purpose or protection types often have ±5% to ±20% . sites like Mouser Electronics
This represents the sensitivity of the thermistor. A higher B-value means a larger resistance change per degree of temperature. buy ntc thermistor
When browsing, look for these specific values on the datasheet or product listing: The most common values are 10kΩ and 100kΩ .
For Arduino or DIY projects, ElectroPeak and GrayLogix offer affordable modules (3-pin or 4-pin) that are easier to wire.