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Introduction to common problems of five tact switches

Time:2021/9/23Author:adminClick: 661
BZCN Zhejiang Bozhong Electric Co., Ltd. takes you to the introduction of five common problems of miniature tact switches
①. Common problems of plug-in touch switch:
The plug-in touch switch is suitable for manual soldering and wave soldering, because its soldering process does not require high temperature resistance, which gives many bad manufacturers opportunities. In order to save costs, many unscrupulous manufacturers have replaced the PA66 plastic base that was originally used with POM material. It does not matter if the material is changed. They also steal the material and add recycled materials in different proportions. This has caused many of our customers to find environmental problems and after wave soldering. Problems such as blistering on the surface of the switch and stuck keys.
② Common problems of patch touch switch:
The patch switch is one of the common switches. In this era of difficult recruitment, the machine that can save labor costs is the machine, so the patch switch is one of the better choices, but many customers are also troubled by this, because once There is a problem with the switch, and the problem of difficulty in repairing appears. In fact, it is very simple to make this type of switch. The materials used by Han Rong are PA9T or LCP materials. These two materials are not difficult for the reflow soldering process at all. Some manufacturers do it privately in order to save costs. Change to PA66 or a lower-end material, then the problem will follow. The common problems of patch tact switches include: switch temperature resistance, hand feel attenuation, button handle melting, switch base blistering, switch tapping non-conduction, button jamming and other very complex issues.
③The problem of rosin being easily immersed in the side-press light touch switch:
First of all, the pins of the switch are connected to each other internally. This is the key, because our pins need to be soldered. If the precision of the product mold of the switch is not enough, then the pins and the plastic body will match up. There are tiny gaps, which leaves us with the opportunity for rosin; secondly, when drawing the switch pads, it is also very important to draw the board according to the drawings provided by the manufacturer. Remember not to be too large or too small, because it is straightforward Affecting the amount of tin on the back, Han Rong suggests that the amount of tin on the majority of customers should be controlled as far as possible between 0.1-0.13, this is the most appropriate; again, the switch is a very precise product, and the materials we use are also very important. We have also said not only once that materials with strong temperature resistance must be used to avoid problems such as switch card keys due to plastic material deformation after the welding process. Miniature tact switch supply
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