23ESB103MMF50AF

Temperature Coefficient:	5%
Mounting Type:	Panel Mount
Bushing Thread:	3/8
Actuator Diameter:	0.250" (6.35mm)
Actuator Length:	1.969" (50.00mm)
Actuator Type:	Flatted
Termination Style:	Solder Lug
Resistive Material:	Carbon
Adjustment Type:	User Defined
Rotation:	300°
Number of Turns:	1
Series:	23, Citec
Power (Watts):	0.2W, 1/5W
Built in Switch:	Rotary, DPST
Number of Gangs:	1
Tolerance:	±20%
Resistance (Ohms):	10k
Taper:	Logarithmic
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Rotary Potentiometers, Rheostats

Rotary Potentiometers and Rheostats are two types of common technology used in electronic circuits for controlling the intensity or magnitude of electric current. Both use a mechanism known as coil resistance, and they control current flow by varying the resistance of a coil. The application field and working principle of 23ESB103MMF50AF will be discussed in this article.The 23ESB103MMF50AF is a rotary potentiometer intended for use in controlling current in an electronic circuit. It consists of a revolving copper wire coil, a wiper arm, and a return arm connected to the stationary part of the potentiometer. The rotating arm which is in contact with the coil is spring-loaded and the wiper resistance is adjustable. When the wiper arm moves across the coil, it removes or adds resistance to the flowing current depending on the resistance of the coil’s resistance. By careful adjustment of the wiper arm, precise current control can be achieved.Rotary potentiometers applicable in circuits that require a high degree of linearity. This linearity is achieved by carefully selecting the length of the conductor coil, and the number of resistive layers. With a longer coil and more layers, better linearity can be attained. It also makes the potentiometer less sensitive to dust, dirt and other sources of corrosion. Furthermore, rotary potentiometers usually require less input current than the more voluminous rheostats.Rheostats, on the other hand, are used in circuits that require more precise current controls such as motor control and voltage regulation. A rheostat consists of a large coil of wire with a sliding contact which moves down the coil. By sliding the contact along the coil the resistance is adjusted. Rheostats can thus be used to regulate and more precisely adjust the current, as opposed to the more simplistic rotary potentiometers.23ESB103MMF50AF is a 3-terminal rotary potentiometer with an adjustable resistance of up to 50 ohms. This potentiometer is designed for use in linear applications and provides a high level of accuracy and linearity. The potentiometer is made of a heavy-duty construction with a high tolerance for dust, dirt and other sources of corrosion. The internal circuitry of the 23ESB103MMF50AF is also designed to avoid electrical noise.In conclusion, when deciding on which technology can best serve an electronic circuit’s purpose, it is important to evaluate its current level and the desired precision of control. If high precision is required, then rheostats may be the better choice. Otherwise, for lower precision and relatively simpler control, then a rotary potentiometer such as the 23ESB103MMF50AF may be more appropriate.

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