SM-3A105

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Trimmer Potentiometers constitute a family of electronic components commonly used to adjust electrical resistance when implemented in an electronic circuit. The SM-3A105 from Sumitomo Electric is a trimmer potentiometer that is widely used to regulate the current as well as other types of electrical signal in a wide variety of electronic applications.

SM-3A105 is a three-terminal variable resistor, which is constructed with a 9-position conductive plastic element. A single turn dial is effectively connected on the center of this trimmer. This potentiometer is designed to fit into the PCB digital set-top boxes, fax machines and other electronic parts. It also offers a higher degree of vibration resistance.

The SM-3A105 is typically used in circuits to adjust current levels and to stabilize operation. As resistance in a circuit adjusts, voltage and current levels can be regulated. The resistance level of SM-3A105 can be adjusted to provide the proper signals for various functions. This type of potentiometer can also be used to prevent voltage spikes, stabilize the input voltage and decrease power consumption.

SM-3A105 offers a wide range of operating temperatures. It is designed to operate from -40°C to +85°C and an additional range from -55°C to +105°C. It has dimensions of 7.2 × 6.2 × 1.6 mm and the resistance range provided by it is 5-150Ω. It offers an insulation resistance of 1000 megohms at 500 VDC, and a voltage rating of 250 VRMS. This trimmer potentiometer is available in tape and reel, standard and angled pins package.

The working principle of the SM-3A105 is based on the connection between the three terminals and varying resistive path. Compliance with RoHS restricts materials such as lead, mercury, cadmium, hexavalent chromium and others. The metal part of the trimmer is made of stainless steel for corrosion protection. It is designed such that, when none of the buttons is active, then you will get zero resistance. At this condition, all paths associated with the potentiometers will be opened.

The adjustable trimpot is widely used in applications like TV volume and tuning control, control line adjustments, frequency adjustments, as well as in test and measurement devices, telecom equipment and other electronic products. Moreover, it can also be used in automotive control systems, medical and robotic applications and many similar system components.

The combination of wide climate operating range, comfortable control input, stable operation, easy installation and convenient external adjustment makes the SM-3A105 trimmer potentiometer an ideal choice for a broad range of industrial, commercial and consumer applications.

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