SM-3A103

Trimmer Potentiometers are used to modify various electronic devices. They can be used in a wide range of applications to adjust the performance of an electronic circuit, through varying its resistance or voltage. The SM-3A103 is a trimmer potentiometer that provides a high degree of precision adjustment for its intended application area. It is ideally suited for a wide variety of consumer electronic tuning tasks and is highly recommended in audio-visual equipment, as well as automotive applications.

In terms of its design, the SM-3A103 is a multi-turn potentiometer featuring 3mm installation clearance, a relatively low profile height of 8.3mm, and a total dial rotation of 12.7° with a 6mm long fine-adjustment knob. The device features remote switching and it contains three classic resistive materials, each of which has a flat resistance characteristic curve.

In terms of its construction, the SM-3A103 is a compactly designed potentiometer, with its rotor composed of a stainless steel spindle, a precision bearing and an anodized aluminum construction, all of which are held together by a polypropylene bracket. All of these components are carefully designed to ensure precise movement and a longer service life.

In terms of its performance, the SM-3A103 is highly effective in its application field due to its precision movement, low profile height, and remote switching capabilities. The device is able to provide a switching current of up to 150mA, a total resistance of 10KΩ max, and a power dissipation of up to 0.4VA. In addition to its high performance, the SM-3A103 is also designed to operate under high temperature conditions, with a working temperature range of -25 to 80°C.

The working principle of the SM-3A103 is quite simple. As its rotating element is turned, the resistance of the set of resistors in the device changes accordingly. This resistance is then added or subtracted from the resistance of the other resistors in the device to produce a desired output. For example, when used in an audio-visual system, turning the SM-3A103’s knobs can adjust the volume of the speakers. In a motor related application, turning the knobs can adjust the speed of the motor.

Overall, the SM-3A103 is a highly recommended device for a variety of trimmer potentiometer applications. Its design, construction, and performance make it an ideal choice for automotive, audio-visual, and other electronic tuning tasks where precision adjustment is required. With its remote switching capabilities and its ability to operate in high temperature environments, the SM-3A103 is sure to provide outstanding results in a wide range of applications.