What is the difference between a tact switch and push switch?

Tact switch and push switch are used in a wide range of applications. The market demand is large and has been increasing year by year. Some customers can’t distinguish between the two and think they are a kind of switch. So what is the difference between tact switch and push switch?



What is a tact switch?


The tact switch is a switch that controls the circuit through a touch sensor. The switch can be turned on by lightly pressing the switch button. When the hand is released, the switch is turned off. Its structure consists of a cover plate and a button from top to bottom. , Shrapnel, base, and pins. The button is the place where external force is applied through the cover plate. The shrapnel is the core component of the tact switch. The pins refer to the connection between the tact switch and the circuit, generally five leads. The two pins are a group. The fifth pin serves as a ground. When an external force is applied to the switch, the four pins are connected to make the switch on. When there is no external force, the four pins are not in pairs. Connected, the switch is in the off state.


The on-off of the light tact switch is realized by the force change of the metal shrapnel. When the switch button is pressed during use, the shrapnel will be deformed by the external force and contact the solder lug downwards, so that the two sets of pins of the switch are connected, thus making The circuit presents a conducting state. When the external force is withdrawn, the elastic sheet deforms and returns to the original state, and the two sets of pins of the switch are no longer conducting, and the circuit presents a disconnected state.


What is a push switch?


The push switch is also called the button switch. The structure of the button switch is generally composed of a button cap, a return spring, a bridge type moving contact, a static contact, a pillar connecting rod and a shell. The contact opening and closing of the button is not affected by external force. State, divided into start button (ie normally open button), stop button (ie normally closed button) and composite button. Usually made into a composite button, that is, a combination of normally closed contacts and normally open contacts. For the start button, the contact is closed when the button cap is pressed, and the contact is automatically disconnected and reset after being released, while the stop button is the opposite. The contact is separated when the button cap is pressed, and the contact is automatically closed and reset after being released.


The push switch is a switch that uses a button to push the transmission mechanism, presses or disconnects the moving contact and the static contact, and realizes the circuit switching. The push switch has a simple structure and is generally used in consumer electronics, instrument equipment, communication equipment, computer peripheral products, etc.

What is the difference between a tact switch and a push switch?


The operation mode of the tact switch and a push switch are similar, the stroke of the two is different, and the stroke of the push switch is longer than that of the tact switch.


Tap to indicate the force used to operate the switch. You can change the state of the switch contact without using much force to contact. The switch can only maintain the original state after the switch is removed. The push switch has a lock that can maintain long on and long off. Its own mechanical device to lock the circuit on and off.