blind impedance control pcb hybrid hot-sale for sale

Company Advantages
1. A-TECH impedance control pcb is treated well. It has gone through following procedures include slotting, straightening, micro-bead blasting, tumbling, ultrasonic and steam cleaning, as well as chemical and microdot marking.
2. The product has enough hardness. It can effectively resist scratching due to the friction or pressure from a sharp object.
3. The product is highly automatic. It has an auto flush and backwashes the prefilters, as well as a water conductivity meter which can monitor water quality online continuously.
4. With such a high aesthetic value, the product not only improves the living quality of people but also it satisfies their spiritual and mental needs.
5. People can be assured that it's not likely to droop and warp over time. Even it is washed many times, it still keeps the perfect shape.

Plated half holes which is also called castellated holes, they’re normally designed at the edge of printed circuit boards and plated with copper, and they’re mainly used for board-on board connections, mostly where two circuit boards with different technologies are combined.

Most of the plated half hole PCBs are a type of modules which are small and high density with fine pitch components, this type of circuit boards are made with GPS Modules, Wifi Modules, Bluetooth Modules, GMS Modules, GPRS Modules and other smart modules.

Basically plated half holes are not suitable for V-score process, because the copper at the hole will be rolled up to cause serious burs, routing process is a better solution to ensure smooth edge.

The guidelines of designing plated half holes

● Normally the minimum half hole size is 0.8mm, it can be min 0.55mm with A-TECH capability
● The routing tolerance for half hole is +/-0.15mm
● The minimum distance from pad to pad is 0.25mm
● Use the larger hole diameter if possible
● Use the larger outer layer pad on both sides if possible
● Connect inner layer pads to the plated holes if possible to bring more stability and help to avoid burrs.
● Routing process is preferred and ENIG finish is preferred.

A-TECH have manufactured a large number of printed circuit boards with half hole design for various module products, and we have obtained rich experience to control high quality, the minimum half hole size we can build is 0.55mm.

Company Features
1. A-TECH CIRCUITS Co., Ltd. is one of the most professional impedance control pcb manufacturers in China.
2. Our company consists of management members with proven track records from the industry. Together they bring a wealth of complementary experience, knowledge, and skills to promote our business.
3.  Honesty, innovation, unity, pragmatism, and dedication are the spirit of A-TECH CIRCUITS Co., Ltd.. Ask online! We believe that our adherence to hybrid pcb will help A-TECH to win customers many praises. Ask online!