SM-42B103

Trimmer potentiometers are a type of passive components used to adjust electrical signals in a wide range of applications. The SM-42B103 is a trimmer potentiometer from Bourns which is typically used for precise voltage adjustment, sensitivity adjustment, or PWM signal adjustment. It has a single turn design with fine adjustments enabled by a precise control. This trimpot is commonly used in RF and IF modular applications, amplifiers, computers, automotive, medical, LED control, sound systems, or any other application where precise Voltage or impedance adjustment is required.

The SM-42B103 trimmer potentiometer has three pins: a common pin, a top pin, and a bottom pin. It has a total ceramic element size of 12mm x 12mm, a resolution of 1/16 turns, and a rotating angle of 60 degrees. It offers a typical resistance of 10K Ohms, a maximum operating voltage of 100 Volts, and a maximum current rating of 10 milliamps (@ 85 degrees Celcius). The SM-42B103 is capable of withstanding a vibration level of up to 10G’s peak acceleration.

The working principle of the SM-42B103 trimmer potentiometer is simple. The two outer pins act as terminals of resistance, and when the control knob is turned, the resistance between the two pins changes. This causes an electrical signal variation which can be used for precise adjustment of the signal. The common pin generally accepts a voltage, which is then adjusted by the terminals. It could also be hooked up to a series of resistors to form a variable voltage divider to vary the voltage or impedance of an electronic circuit.

The SM-42B103 trimmer potentiometer is a great choice for any application that requires precise adjustment or fine-tuning of electrical signals. Its robust construction and low current rating make it suitable for a range of applications, from RF and IF modulars to LED controls.

The SM-42B103 trimmer potentiometer is a reliable and cost-efficient solution for applications needing precise voltage or impedance adjustment. It offers robust construction and superior performance for everything from amplifiers to LED control.