SM31A202

Series:	SM31
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Resistance:	2 kOhms
Power (Watts):	0.125W, 1/8W
Tolerance:	±20%
Temperature Coefficient:	±100ppm/°C
Number of Turns:	5
Adjustment Type:	Side Adjustment
Resistive Material:	Cermet
Mounting Type:	Surface Mount
Termination Style:	J Lead
Size / Dimension:	Square - 0.173" L x 0.154" W x 0.134" H (4.40mm x 3.90mm x 3.40mm)

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<h2>Trimmer Potentiometers</h2>Trimmer potentiometers are variable resistors which are designed for manual adjusting application. Also known as trim pots, they are widely used for fine tuning or calibration adjustment in many electronic circuits.SM31A202 is a mini trimming pot series from KOA Speer, a pioneer in the manufacturing of resistor networks. It features 1/4-inch square package with terminals on three sides, and it uses conductive plastic as material for the element for stable characteristics. Furthermore, the series offers resistance values ranging from 10 ohms to 5 megohms. <h3>Application</h3>The SM31A202 series can be used for a range of applications, such as amplifier input and output balance adjustments; over voltage protection and circuit tuning; dc motor rotation speed, servo system and LED lighting dimming; audio equipment level and audio frequency control; oscilloscope brightness and contrast adjustment; and many more.<h3>Working Principle</h3>Trimmer potentiometers work in the same way as standard potentiometers. When the wiper arm is turned, it changes the resistance between the input and output terminals of the device.When the wiper arm is turned clockwise or counterclockwise, it moves up or down on the plastic track, which is fixed on a small coil or spring. This allows for adjusting the resistance between the input and output terminals, and the amount of resistance can be adjusted by changing the position of the wiper arm.The SM31A202 series is a three-terminal trimming pot, with one of the terminals serving as the input and the other two terminals categorised as the output terminals. It is designed with a wiper arm that can be moved between the two output terminals, and the position of the wiper determines the resistance between the input and output terminals.<h3>Conclusion</h3>The SM31A202 series from KOA Speer is a highly reliable trimming pot that provides accurate and stable performance. It is used in a variety of applications where manual adjustment is needed, such as circuit tuning, audio frequency control, oscilloscope brightness and contrast adjustment, amongst others. The series features 1/4-inch square package with terminals on three sides, and offers resistance values ranging from 10 ohms to 5 megohms. Its basic working principle is the same as all trim pots, wherein the wiper arm is moved to different positions on the plastic track to adjust the resistance between the input and output terminals.

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