Bourns is an American electronic component manufacturer that has grown from a family shop into a company with a comprehensive product line. Its core product line should be the adjustable resistance series. Its product line includes precision resistance potentiometers, panel controllers, encoders, resistance/capacitance networks, chip resistors/discharges, inductors, transformers, recoverable fuses, semiconductor thyristor overvoltage protectors, lightning-proof resistors for communications, gas discharge tubes, telephone base station protectors, 5-pin Protectors, industrial signals, irrigation and oil protectors, cable TV coaxial cable protectors, signal data protectors, indoor and outdoor POT shillers, network interface devices, and integrated circuits.