FPC manufacturer tells you What is microvia aspect ratio and why is it important for FPC design
FPC manufacturer tells you What is microvia aspect ratio and why is it important for FPC design
The aspect ratio of a through hole is the ratio between the depth of the hole and the diameter of the hole (hole depth to hole diameter). For example, a standard circuit board at 0.062" thick (with 0.020" vias in it) will have an aspect ratio of 3 to 1. This ratio is used as a guide to ensure that the PCB manufacturer does not exceed the manufacturer's capabilities. their equipment while drilling. For standard drilling, the aspect ratio should generally not exceed 10:1, which will allow a 0.062" board to drill a 0.006" (0.15mm) hole through it.
When using microwells, the aspect ratio varies greatly due to their size and depth. Plating smaller holes can be difficult, and plating a small hole on 10 layers of a board can cause a lot of problems for the FPC manufacturer. However, if the hole spans only two of these layers, plating becomes much easier. IPC used to define micropores based on their size, which was equal to or less than 0.006 inches (0.15 mm). Over time, this size became common and the IPC decided to change its definition to avoid constantly updating its specifications as technology changed. The IPC now defines a microhole as a hole with a 1:1 aspect ratio, as long as the hole does not exceed 0.010 inches or 0.25 mm in depth.
Other news about S&L
- Celebrating the Establishment of SUNLYNN CIRCUITS(THAILAND)
- Good News! Sun&Lynn Circuits Co.,Ltd. is honored as one of the Top 100 Innovative Enterprises in Bao
- What Should You Know about Metal Core PCB?
- FPC supplier : the types of Flexible PCB
- PCB manufacturer China:Why PCB board snake line, what is it used for?
- What is Metal Core PCB and types of Metal Core PCB?
- Why are High frequency PCBs much more expensive than normal PCBs?
- Flexible PCB supplier China :When to use flexible PCB?
- Flexible PCB manufacturer:What Is Flex Soldering?
- What Is Automotive PCB? Why we use automotive PCB?
Your browsing history
- Baumuller visited S&L to discuss cooperation
- Three reasons for manufacturer is difficult to tin the High frequency PCB
- Advantech
- PCB manufacturer China:Samsung Electronics Successfully Achieved the Industry's Fastest 5G Speed
- Flexible PCB manufacturer:What are the differences between Flex and Rigid boards
- What are the benefits and advantages of the rigid-flex PCB board
- Advantages of Immersion Silver Surface Finish for Flex rigid PCB
- FPC manufacturer:What are the factors of FPC processing cost?
- Flexible PCB supplier china:Rigid-Flex PCB Manufacturing Process
- HOW DOES HDI WORK IN PCB SUPPLIER CHINA
A total of -comments【I want to comment】