This represents the sensitivity of the thermistor. A higher B-value means a larger resistance change per degree of temperature.
For precision sensing, look for ±1% . General-purpose or protection types often have ±5% to ±20% . buy ntc thermistor
For high precision and bulk orders, sites like Mouser Electronics, Newark/element14 , and LionCircuits carry top brands. This represents the sensitivity of the thermistor
For Arduino or DIY projects, ElectroPeak and GrayLogix offer affordable modules (3-pin or 4-pin) that are easier to wire. sites like Mouser Electronics