Precautions for the use of tact switch

Publish Time:2023-03-16 Author:jiaxi Views:1221

Key switch mainly refers to the light touch key switch, also known as tact switch. Key switch is a kind of electronic switch, belongs to the electronic components category, first appeared in Japan (called: sensitive switch), use to meet the conditions of operating force to the switch operating direction pressure switch function closed on, when the withdrawal of pressure switch is off, its internal structure is to rely on metal shrapnel force changes to achieve on and off.

Precautions when using the key switch.

1、When soldering the key switch terminals, if a load is applied to the terminals, there may be loosening, deformation and deterioration of electrical characteristics depending on the conditions, so please pay attention when using.

2、When using through-hole printed circuit boards or boards other than those recommended, the thermal stress may change, so please check the soldering conditions thoroughly beforehand.

3、When soldering twice, please do it after the first soldering part has returned to normal temperature. Continuous heating may cause deformation of the peripheral part, loosening of the terminal, dislodgement and degradation of electrical characteristics.

4. Please check the actual mass production conditions for the soldering conditions.

5. The product is designed and manufactured with DC resistive load in mind. When using other loads (inductive load, capacitive load), please check separately.

6、Please refer to the recommended dimensions in the product drawing for printed circuit board mounting holes and patterns.

7. Please use the switch for the structure where the switch is operated directly by a person. Please do not use it for mechanical detection function.

8、The switch may be damaged if the specified load or more is applied when the light touch switch is operated. Please be careful not to apply more than the specified force to the switch.

9、Please avoid the usage of pressing the operation part from the side.

10、For the flat shaft rod type, press the center part of the switch as much as possible. For the hinged structure, please pay special attention to the shaft lever pressing position will move when pressed.

11、After the switch is installed, please contact a professional when the adhesive of other parts is hardened through the heat storage and hardening furnace.

12、If corrosive gas is generated in the surrounding material of the whole machine where the switch is used, it may cause poor contact and other phenomena, so please make sufficient confirmation beforehand.

13、The carbon contact point has the characteristic that the contact resistance changes due to the push pressure load. When using in voltage divider circuits, please check thoroughly before use.

14. For models other than the closed type, please pay attention to the intrusion of foreign objects. What do you need to pay attention to when using LED lights?