Five common problems with tact switches

Tact switch is an essential switch element in life. There are many types of switch specifications and different functions. And the switch in the use of the details of the problem point is also very much, the following about some tact switch can not ignore the five common problems.

Problem one:
Before installing tact switches, please confirm whether the specifications meet the requirements. Usually, each type of switch with different specifications has different welding methods and pin methods, such as DIP and SMT pins.

Problem two:
When using the tact switch button, the operation force should not be too large, which may lead to the deformation of the internal panel spring, resulting in some bad induction action. In particular, excessive load may cause other hidden faults.

Problem three:
The conventional waterproof rating of tact switch is IP6, but it is not guaranteed to be 100% waterproof, so avoid water and gas contact, or wet hands when pressing the switch, it is easy to lead to circuit short circuit and other accidents, if serious, there will be some dangerous electric shock accidents.

Problem four:
The cap of the general switch is fixed by the four riveting points above the base, the four riveting points appear loose or after high temperature shrinkage, both of which will cause the tact switch key cap to fall off. Therefore, in general, in the selection of switches, switches must be the base of high temperature resistant material, and the switch installation riveting point to be fixed, so as to solve the problem of switch cover off.

Problem five:
In the usual use of tact switch, there are often some conditions such as no reaction when the switch button is pressed. The general reason is that there is too much dust and debris accumulation inside the switch, so that it affects the conduction between the lines, which will cause the phenomenon of no reaction of these switch keys. Therefore, the switch must be cleaned internally on a regular basis to ensure that the switch can operate safely.

In fact, there are still many problems in the operation of tact switch. In general, as long as you master the basic knowledge about switches, you can avoid and reduce the failure of some hidden switches.