SM31B203

Series:	SM31
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Resistance:	20 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:	Gull Wing
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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Trimmer Potentiometers

Trimmer potentiometers are small, adjustable resistors devices composed of a spindle, a rotatable element usually known as a knob, and a set of terminal pins. Trimmer Potentiometers, or trimmer pots, are designed to be used to fine-tune the characteristics of a circuit once it has been manufactured.The SM31B203 is a special type of trimmer potentiometer which provides high precision and stability. It has a range of applications in a variety of contexts including, but not limited to, power supplies, audio equipment, telecommunications, automotive and maritime systems. It is an ideal choice for applications where a high degree of precision and stability are essential.The SM31B203 trimmer potentiometer consists of a three-terminal connector, a spindle, a resistive element, and a conductive disc. The three terminals on the trimmer pot are typically designated as 1, 2 and 3. The rotatable spindle has a pawl that rotates and locks into detents at specific points on the resistive element. As the spindle is rotated, the pawl moves through the detents, thus providing a variety of possible settings of the resistive element.The resistive element in the SM31B203 trimmer pot is a carbon film construction, which provides stable resistance values through a large temperature range. The carbon film construction also protects against environmental contamination, such as dust and moisture, without reducing the accuracy or repeatability of the pot. The conductive disc ensures that the contact between the resistive element and the spindle remains stable when in use.The working principle of the SM31B203 trimmer pot is relatively simple. It works on the principle of voltage division, where the total voltage of the circuit is divided among the resistive element and the external connected components. As the spindle is rotated, a varying voltage is applied to the resistive element, thus causing it to resist the passage of current. This varying resistance is what allows the trimmer pot to be used to fine-tune the characteristics of a circuit.In conclusion, the SM31B203 trimmer potentiometer is an ideal choice for use in a variety of applications where precision and stability are required. It is a reliable, cost-effective, and easy-to-use device that provides highly accurate results. Its resistive element is protected from environmental contamination, allowing it to perform reliably in a variety of settings. Its stable carbon film construction ensures consistency and accuracy, and its spindle allows for varied settings of the resistive element. Its simple working principle provides reliable and variably results, making it a valuable tool in numerous applications.

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