Familiarity with the various indicators of the tactile switch helps us to select a better quality touch switch. Then, how to detect the various indicators of light touch switch, let us understand the following methods to detect the pressure, pressure, stroke, weldability, insulation resistance, welding heat, pin strength, appearance size, functional action, contact resistance.

1. Test the force of light touch switch

In the center of the top end of the touch switch handle, the static load is uniformly applied according to the action direction of the touch switch, and the average value is measured two times. The measurement error should not be more than 15%. The force on the touch switch shall be within the scope specified in the component specification.


2. Test the voltage resistance of light touch switch

The test voltage of the AC250V (50Hz effective value) is added between the adjacent and non connected contacts, and the contact points and other metal parts. During the 1min. test, there should be no breakdown, arc, damage, flicker and so on, and the leakage current is not more than 0.5mA.

3, detection of light touch switch stroke

In the center of the top end of the touch switch handle, the maximum allowable force is applied evenly in the direction of the light touch switch, and the stroke is measured with the vernier caliper. The measurement error is not more than 15. The stroke of the light touch switch should be within the range specified in the components specification.

4. Detects the weldability of light touch switch

After soaking the welding spot through the flux, it is immersed in the Sn96.5Ag3Cu0.5 (RoHS material) of 240~245 C and 2~3s in the molten solder groove of Sn63pb37 (non RoHS material) at 235 + 5 degrees C along the axis direction. The body is separated from the molten solder 1.5mm and then is observed with a 3-10 times magnifier. The immersion part should be bright and smooth, only a small amount of scattered like needle is allowed. Defects such as pores are not infiltrated or weakly infiltrated, and these defects do not appear in the same position. Supply of light touch switch for thin film

5. Detection of light touch switch insulation resistance

The measuring error should be less than 10 DC250 when the voltage between the switch and the disconnected contacts and between the contacts and other metal parts is applied to the voltage of DC250 +. Insulation resistance should be greater than 100M Omega

6. Test the welding heat of light touch switch

After soaking the sample pin over the flux, it is immersed in the Sn96.5Ag3Cu0.5 (RoHS material) of 265 + 5 C and Sn63pb37 (non RoHS material) at 260 + 5 C along the axis direction and 5 + 0.5s in the molten solder slot of the non RoHS material, and the noumenon distance from the molten solder is 1.5mm. The switch should be able to withstand the effect of heat resistance test. After the test, the switch should be restored for 30 minutes under normal conditions. The switch should be able to move, the circuit should be converted to normal, the pin should be without mechanical damage, and the appearance should not be changed obviously.

7. Test the strength of light touch switch pin

Take a pin, make the sample in the normal installation position, the axial direction of the pin 9.8N pull force, the time is 10 + 1S. test, pins should not fall off, breakage, switch should be able to move.

8, detecting the appearance size of light touch switch

The light touch switch parts are well processed, the surface has no rust, oil pollution and other visible damage; the pin is good electroplating, no rust, no oxidation, no break, no bending; the key part should be smooth, no burr, no protruding. It is firmly combined with the body without loosening; the digital or alphabetical mark of the switch surface is clear and complete. The structure, installation dimension and size of the switch should meet the requirements of component specification, and the tolerance requirement of switch size is + 0.2mm.


9. Detect the function of light touch switch

In accordance with the rated voltage and rated current as stipulated in the specification, the circuit is checked by the indicator lamp, and the contact resistance test method can be used to check it. The on-off of the switch should be accurate and clear. The operation of the cycle switch should be smooth and no stuck.

10. Detection of contact resistance of light touch switch

The resistance value of the switch contact is measured by the milliohm table; when the dispute is disputed, the DC 20mV (the open circuit EMF of the test circuit), the 100mA, the voltage drop of the elicited end are calculated, and the contact resistance is calculated. Light touch switch requires less than 0.03 Omega.

Because of its small size, long life, light touch and so on, it has been widely applied in many fields such as household appliances. With the continuous improvement of the people's living standards, the renewal and replacement of these household appliances are becoming faster and faster, and the number of their needs will become larger and larger. This is the greatest potential direction for us to be optimistic about its future development.

As the demand for the light touch switch of the film becomes more and more large, the number and quality of this piece are more and more strict. At the same time, the quality is ensured, and the price and after-sales service are provided. Can switch, touch switch, check switch, slide switch, light touch switch, button switch, micro switch, earphone socket, DC socket, advanced manufacturing equipment and testing equipment, and research and quality control center composed of experts at home and abroad, high quality staff, scientific management method and ISO9001 quality management. Department, ensure that we win the trust of customers with excellent quality, good service and competitive price. Buy film tactile switch, to film touch switch manufacturers.