How to improve the performance of the charging pin？
The charging needle is also called a probe, which is mainly composed of parts such as a needle, a needle tube, and a spring. It is mainly used to test the wiring condition of the PCB board, or used in the online inspection after the plug-in, and used in the BGA package inspection and chip inspection. It is worth noting that when measuring the wiring condition of the PCB, a measuring mold must be made, and usually, an OCB board can only be tested by one mold. In ordinary testing, if you want to strengthen the performance of the stable connector, then you need to do oxygen testing. Now we will talk about what changes can be made to improve the performance of the product.
The design concept of the inclined surface structure of the needle head of the charging needle can ensure a very low and stable contact impedance, and this design concept can absolutely ensure the stable conduction performance of the product. In addition, the needle has a perforated structure. This design allows the length of the matching spring to exceed the length of the needle tube so that a stable elastic force and stroke can be obtained even under the condition of very limited space. But it is important to pay special attention to the needle that it is best not to use a flat-bottomed design because this design method will prevent the charging needle from touching the spring thimble needle tube normally so that the current cannot pass through the needle tube, which will cause too much resistance. , Causing the current of electronic products to be unstable.
Next is the design of the charging pogo pin tube. Generally, the charging needle manufacturer should set the overall structure of the charging needle according to the customer's structural space for charging and the function and life of the product. It is necessary to fully consider the convenience of fixing the product on the PCB and the depth of soldering. At the same time, for the connection of the battery, there will be a needle tube with a special shape or a 90° bend for customers to choose freely so that customers can choose the most suitable charging needle.
In order to maintain the precise size of the charging needle and meet the more requirements of customers on the product, the material or design of the charging needle must be required to the highest standard. Usually, stainless steel SUS304 or piano steel wire is used as the spring. Material, because this material can ensure the toughness of the spring to enhance the service life of the charging needle.