SPST Illuminated Tact Switches

SPST illuminated tact switches are single pole, single throw switches that have a built-in LED indicator that lights up when the switch is activated. These switches are commonly used in a variety of electronic devices such as keyboards, gaming controllers, and medical equipment.

The SPST tact switch is a momentary switch, meaning that it is only active when the user is pressing down on it. Once the user releases the switch, it returns to its original position and the circuit is broken. The SPST tact switch is also a normally open switch, meaning that the circuit is open until the user presses the switch.

The built-in LED indicator on the SPST illuminated tact switch is typically a surface-mount device (SMD) LED, which is mounted directly onto the switch. The LED is typically a bi-color LED, which means that it can light up in two different colors depending on the polarity of the power supply. For example, if the positive terminal of the power supply is connected to the anode of the LED, the LED will light up green. If the positive terminal is connected to the cathode of the LED, the LED will light up red.

The SPST illuminated tact switch is available in a variety of sizes and shapes, with the most common sizes being 6*6mm and 7*7mm. The switch can also be custom-designed to meet specific user requirements. The switch can have various mounting styles such as through-hole or surface-mount, and can also have a variety of actuator shapes, such as round, rectangular, or square.

The SPST illuminated tact switch is typically rated for a low voltage, low current application. The voltage rating of the switch ranges from 3VDC to 12VDC, with a maximum current rating of 50mA. The switch is typically rated for a minimum of 100,000 cycles, meaning that it can be pressed and released 100,000 times before the switch begins to wear out.

The SPST illuminated tact switch can also have a variety of different contact materials, including silver, gold, and various alloys, which affect the switch's operating characteristics. For example, a switch with gold contacts may have a longer lifespan and more reliable operation than a switch with silver contacts.

In summary, the SPST illuminated tact switch is a momentary switch with a built-in LED indicator that is commonly used in electronic devices. The switch is available in a variety of sizes, shapes, and mounting styles, and can be custom-designed to meet specific user requirements. The switch is rated for low voltage, low current applications and is available with a variety of led color options.