Jameco offers one of the largest selections on the market of temperature dependent variable Thermistors. Considered one of the most important segments of electronics these days, the thermistor has tons of applications. Choose from PTC thermistors, NTC thermistors, and more. These resistors increase or decrease resistance based on temperature. Or if you're interested in learning more about these important sensors, then take a look at Jameco's selection of sensor & circuits projects that respond to heat, pressure, light, touch, water, strain, lightning, and magnets.