Series:	Trimpot® 3352 - Open Frame
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Resistance:	200 kOhms
Power (Watts):	0.5W, 1/2W
Tolerance:	±20%
Number of Turns:	1
Adjustment Type:	Side Adjustment
Size / Dimension:	Round - 0.350" Dia x 0.350" H (8.89mm x 8.89mm)
Termination:	PC Pins
Mounting Type:	Through Hole

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Thumbwheel Potentiometers

3352H-1-204LF Application Field And Working Principle

Thumbwheel potentiometers are devices used for translating the position of a membrane, such as a thumbwheel, into an electrical signal. They are commonly used for applications such as setting parameters, adjusting fields, selecting options, and so on. The 3352H-1-204LF is an example of a thumbwheel potentiometer.When a thumbwheel is moved to a different position, it creates a new resistance value for the circuit it is connected to. The resistance is translated into an electrical signal and is used to control or monitor the setting of the thumbwheel. The amount of resistance generated is inversely proportional to the position of the thumbwheel, meaning that as the thumbwheel is moved further from its default position, less resistance is created in the circuit. This is an important feature of thumbwheel potentiometers, as it allows the user to easily adjust the settings of the device with very little manipulation of the thumbwheel.The 3352H-1-204LF thumbwheel potentiometer uses a carbon element as its sensing material, as opposed to the more common variable resistor elements, such as the wirewound type. This makes it suitable for use in high accuracy and low noise applications, such as medical instrumentation. It also has a low temperature drift, meaning that the resistance value stays relatively stable over a wide range of temperatures. In addition, it has a linear motion characteristic, meaning that the output signal is directly proportional to the amount of rotation of the thumbwheel, rather than the amount of current passing through the device.The 3352H-1-204LF also features a snap action switch which is activated when the thumbwheel reaches its full rotation. This is useful for applications which require a preset limit, such as when setting a minimum or maximum output signal. The switch is hermetically sealed, meaning that it is resistant to water and other liquids, making it suitable for use in hazardous and wet environments. In terms of installation, the device can either be panel mounted or mounted directly onto a printed circuit board. It is also important to remember to take the required load resistance into account when installing the device, as this can affect the sensitivity and accuracy of the output signal. Overall, the 3352H-1-204LF thumbwheel potentiometer is an excellent choice for applications which require precise, low noise, and accurate control of the output signals. It is also suitable for applications which require a sealed switch, as it is hermetically sealed. By following the installation instructions and selecting the resistance values carefully, the device can be used to provide consistent results and reliable performance in a variety of settings.

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