SM-43B504

Series:	SM4
Packaging:	Bulk
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Resistance:	500 kOhms
Power (Watts):	0.25W, 1/4W
Tolerance:	±10%
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:	Rectangular - 0.189" x 0.181" Face x 0.154" H (4.80mm x 4.60mm x 3.90mm)

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Trimmer Potentiometers - SM-43B504 Application Field and Working PrincipleTrimmer Potentiometers, commonly referred to as Trim Pots, are used to precisely adjust the resistance of a circuit. As such, they are popular component choices for a variety of commercial and industrial applications. The SM-43B504 from CTS is one such example of this type of component. This trim pot is a single-turn, sealed, 4mm square potentiometer with an analog taper that is typically used in attenuation and frequency adjusting applications. It also contains a cermet terminator and a sealed dust cover.The main application field for the SM-43B504 is in precision instrumentation, where its small size and high resistance values make it an ideal choice. Its resistance range of 5kohm to 10Mohm makes it suitable for a variety of applications ranging from channel balancing in TV receivers to headphone volume control in CD players. It is also commonly used in brushless DC motor control circuits, temperature sensors, and various types of telecommunication systems.The working principle of the SM-43B504 is relatively simple, yet effective. It consists of two basic elements: a resistive element and a wiper element. The resistive element is composed of a flat-film resistive network which is connected between two terminals. The wiper element is a metal arm that slides along the resistive element, creating a sliding contact between them. As the wiper arm is moved, the resistance between the two terminals is changed.Furthermore, the SM-43B504 contains a brushless signal isolating socket, which is used to prevent any cross-communication between the analog signal and the digital signals. This is essential in any application involving both analog and digital signals, as it ensures that the two signals remain separate and do not pollute one another.In conclusion, the SM-43B504 is a small, sealed, 4mm square potentiometer with an analog taper and resistance value range of 5kohm to 10Mohm. It is a popular choice for precision instrumentation in applications spanning a variety of industries and presents an ideal solution for applications that require delicate adjustments and resistor values that remain consistent over time. Furthermore, its unique brushless signal isolating socket makes it an attractive solution in applications that involve both analog and digital signals.

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