Miniature potentiometers take control
An Alps Electric (UK) product story
Edited by the Electronicstalk editorial team Jul 3, 2008
Typical applications include controlling dimmers, wipers and various in-car accessories.
Available now from Alps Electric, the compact surface-mountable RK119 series of 11mm metal shaft potentiometers offer a range of options, including a centre-push switch.
With dimensions of only 14.2 x 11.7 x 5.0mm they can easily be mounted on even high-density printed circuit boards.
The metal shaft has a length of 20mm and a shaft diameter of 4.5mm.
The vertical type potentiometers enable direct installation on PCBs and are suitable for reflow soldering.
They are rated for voltages of 50V AC or 10V DC and have a power consumption of 0.05W.
Despite its tiny size, the RK119 series features good haptics and high total mechanical rotation angle of 300+10/-5 degrees.
The necessary rotational torque is 7.5+/-3.5mNm.
The shaft stopper strength amounts to 0.5Nm and the push-pull-strength to 100N.
The optional switch is designed as single-pole single-throw push-on switch and is rated for switching currents of up to 0.1mA at 5V DC.
It requires an operating force of 5+/-2N.
The push-on switch travel is either 0.5 or 1.5mm, depending on the model.
The operating life of the RK119 series is specified with 15,000 rotational cycles and 100,000 switching cycles.
Further technical characteristics are a total resistance of 10kohm with +/-20% tolerance, an initial contact resistance of 50mohm, an insulation resistance of up to 100Mohm and a voltage proof of 300VAC per minute.
The operating temperature ranges between -40 and +85C.
Typical applications for the RK119 series are controlling of dimmers, wipers and various in-car accessories, controlling of volume, tone and balance of car audio equipment and car navigation systems, and level controls in various communication devices.
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