When choosing a small switch: As for the slight price difference between different quality switches, you need to consider the total cost of use. Because you're not only paying for the switch, you're also paying for the long-term, trouble-free operation of the switch. In many cases, the additional cost of using a more reliable switch is offset by a lower warranty cost during use.
In the micro switch: the smaller the size of the micro switch, the smaller its stroke and the current that can be broken. In addition, the external size of the switch also affects the operating force. Ideally, what engineers need is a switch with low operating force and high current capacity. But in fact a compromise is required between these two parameters. To maintain good contact while providing a large current carrying range, the microswitch requires a stronger spring, which increases the operating force and size of the switch. So general small micro switch engineers should also pay attention to the differential travel of the switch - the distance between the switch trip position and the reset position. Its threshold will vary according to different applications.
Image of small microswitch
1. Ultra-small, lightweight and high-precision.
2. M2mm type with general purpose screws can be used.
3. The structure with formed terminals and reference distance at the same time makes it difficult for solder and flux to penetrate into the inside of the switch.
4. A low-power circuit type (Au clad contact) suitable for small voltage and current loads is also available.
5. Self-standing type terminal, easy to install on the printed board. The switch body is independent with respect to the printed board of 1.2~1.6mm.
6. There are also a series of right-angled and left-angled printed board terminals.
7. Compliant with RoHS directive.
Electrical parameter requirements for small micro switches
Micro switches are usually capable of breaking currents from 5mA/5VDC to 25A/250VAC. The micro switch product line offers a range of products from low energy consumption to power load electrical for a variety of applications. Engineers need to know the current and voltage ratings (AC or DC) required for a specific application to select the appropriate switch. As devices of all kinds in all industries strive for low power consumption, microswitches need to be able to operate at low currents (logic level loads) and DC voltages. However, there are also applications that require switches capable of breaking high currents and voltages, such as industrial grade pump applications.
Notes on the use of small micro switches
1. When fixing the switch body, please use M2 small screws on the smooth surface with a torque of 0.098N·m or less. Also, to prevent loosening of the screws, it is recommended to use washers at the same time.
2. Please note that in the free state, the action body should not directly exert force on the button or the exciter, and the button should exert force in the vertical direction when using it.
3. The action setting after action is based on 70[%] or more of the O.T. value. In the case of a switch, do not set the operating body at the operating limit position to prevent the life from being shortened by the opening and closing and over-travel caused by the shock.
4,< /span>About the change of the operating characteristics, even if the operating characteristic specification value is changed by ±20[%], it should not cause a malfunction. In the case of hand soldering, please use the electric temperature 320°C max.) with temperature adjustment to complete the operation within 3 seconds, and be careful not to apply force to the terminal part during the operation.
5,Do not have a bad influence on the contacts and be corrosive Use and store in places where gas, silicon, etc., or where there is a lot of dust. It is recommended to use a low-power circuit type (Au-clad contact) when using it at a small current and voltage.
