Bourns is an American manufacturer of electronic components that has grown from a family workshop to a fairly comprehensive product line. Its core product line should be the adjustable resistor series. Bourns' product line includes precision resistance potentiometers, panel controllers, encoders, resistor/capacitor networks, chip resistors/resistors, inductors, transformers, recoverable fuses, overvoltage protectors for semiconductor gate fluids, lightning resistance resistors for communications, gas discharge tubes, telephone base station protectors, 5-pin protectors, industrial signal, irrigation and oil protectors, cable coaxial cable protectors, signal data protectors, indoor and outdoor POT splitters, network interface devices, and integrated circuits.