Series 158S Rotary Potentiometer With Switch Manufacturer China Customization

 Features -15.8mm*20mm, single-turn industrial panel control -Carbon film element, Linear or audio taper -SPST switch with 1A,1,5A, 2A 220VAC rating -Metal shaft and bushing (Plastic PBT end optional) -6mm diameter shafts in slot, flat or round and styles -Standard 15mm or 20mm shaft length   Precautions for the use of potentiometers 1.      Use chemicals with caution Potentiometers should avoid exposing the potentiometer to a strong atmosphere of chemicals such as ammonia, amines, alkali solutions, aromatics, ketones, esters, halocarbons and other chemicals due to the use of synthetic resins such as polycarbonates. 2       Use flux with caution Water-soluble fluxes should be avoided when soldering, otherwise it will adversely affect the metals and other materials of the potentiometer 3       Solder The wiring design and soldering method should avoid causing the melted tin to flow to the upper plane of the PC board, as shown in Figure 1, which can cause poor contact. 4   Recommended circuit connection When the potentiometer is used as a variable resistor, it is recommended to be used as a voltage divider to adjust the voltage, and the load resistance Rl of the potentiometer should not be less than 10 times the nominal resistance of the potentiometer.When the potentiometer is used as a current regulation in a DC circuit, there will be current through the sliding arm of the potentiometer, which will cause an abnormal increase in the resistance value due to anodic oxidation. In this case, it is recommended to connect the terminals of the resistor value to the negative pole and the slider arm to the positive pole. 5   Residual resistance Although the potentiometer resistor is a printed silver layer, in order to improve the reliability of the resistance to vulcanization, a carbon film is usually covered in the second stage of the resistor, if you want low residual resistance, please contact our company. 6       Condensation During the use of the potentiometer, the surface of the resistive body should avoid condensation or water droplets, otherwise, it will lead to a deterioration or short circuit of the insulation resistance. 7   Stress applied to the terminals Special attention should be paid to avoiding excessive force when holding terminals, and the correct solder conditions should be designed. 8     Radial shaking of the shaft When using a shaft with an excessively long length, its radial shaking momentum will be proportional to the shaft length, and the shaft length should be selected according to actual needs. 9   Installation of the panel When the potentiometer is mounted with a nut on the panel, too tight will disable the rotational touch function or the thread slip, and the nut should be locked with great care. 10   Low temperature operation When the product is used in a low temperature environment, such as a car radio or car audio used in cold areas, the company provides comfortable products according to customer requirements, please explain when ordering 11    Handle length The shorter the better the length (at least 5mm) In the case of the width A of the slider, the shorter the length of the handle, the better the feel, the higher the other force point, the worse the feel. 12    Drive arm Never keep the operating point away from the slide centerline, for the same reason, the shorter the distance between the two from B, the better