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A-TECH free delivery impedance control pcb durable top supplier

A-TECH free delivery impedance control pcb durable top supplier

Min half hole
0.55mm
Profile of half hole
Routing
Surface finish
ENIG preferred
Min Order Quantity
No
Production Lead Time
5-18 Working Days
Supply Capacity
10000 ㎡/Month
Certifications
UL, ISO9001, TS16949
Payment Terms
T/T, Paypal, WU etc.
Shipment Terms
EXW, FOB, DDU etc.
Test Way
100% E-Test
Standard
IPC CLASS 2 / CLASS 3
Price
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Quantity Needed:
Pieces
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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.




A-TECH countersunk pcb is rigorously tested. It has passed many tests: antibacterial & antimicrobial testing, slip resistance testing, shedding propensity testing, and stitching reinforcement strength testing.
The design of A-TECH countersunk pcb is completed by our renowned designers who try to realize innovative sanitary ware, functionally and aesthetically speaking.
In the production of A-TECH impedance control pcb, the heat sealing machine is applied to guarantee the splicing bounding areas are finely sealed. This procedure is scrutinized by skilled workers.
Through the entire process of A-TECH impedance control pcb, our inspection team continuously tests and measures all steps and strictly respects the regulations of the beauty makeup industry.
A-TECH countersunk pcb undergoes the following production processes: the preparation of metal materials, cutting, welding, surface treatment, drying, and spraying.
impedance control pcb based on impedance control pcb materials has the characteristic of impedance control pcb.
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