Articles
How to Enhance the Design of PCBs for Manufacturability
by Darrin Hein MarketingIf you own a business, you’ll inevitably expect the highest output at the lowest cost. However, it’s only possible for companies designing PCBs for enhanced manufacturability.
Almost every business owner out there wants the highest output at the lowest cost. If you own a business, then you expect the same thing. So, how will you achieve that if you need printed circuit boards for your business? You need a manufacturing partner that connects its production department and design department via an approach called “Design for Manufacturability” or DFM. Such companies coordinate the development, design, and production in a bid to unify standards, enhance production efficiency, and realize production automation. Due to the continuous developments in the industry of electronics, the requirements of printed circuit boards are constantly on the rise, particularly the excessively used SMD components, soldering processes, and assembly. These things require designers to pay attention to printed circuit boards throughout the design phase for manufacturability.
- Selecting components and assembly tactics: When it comes to the best PCB assembly manufacturing, the component selection process will be of importance to you. It mostly refers to the more beneficial components combined with procurement, selection, maintenance, and processing. The situation will determine the DFM component selection within oneself via consultation with hardware engineers, purchasing engineers, and process engineers. Also, selecting the assembly method and the layout of the component are crucial aspects of manufacturability. They affect the cost, product quality, and assembly efficiency.
- The layout: For PCB assembly manufacturing, the layout has a crucial role to play in the entire design phase. Improper structuring can lead to product quality-related issues, and these problems are somewhat challenging to overcome during production. For properly designing the layout as a whole, and to reduce welding flaws and product losses, designers need to prioritize specific factors when working on the same. Here are a few factors worth mentioning.
- The graphic marks and characters on every board have to be clear. No obstructions should be there to deprive manufacturers of practical guidance.
- Manufacturers must leave a specific maintenance gap around the components that are vulnerable. They must never place valuable components in the high-stress zones of the board. Otherwise, cracks will appear quickly almost everywhere, particularly around the components and solder joints.
- Manufacturers should place all power devices evenly on the board’s edge or the ventilation area in the chassis.
- Outline size: The next point of consideration is the outline size. According to experts, the maximum width of a board applicable to wave soldering is about 250mm. Also, the entire size of the same needed for reflow soldering is about 330mm*250mm. Manufacturers design such boards with a golden section point of 0.618. The physical size ratio of the PCB is the best.
- Edge clamping: The automated machines used in production require an automatic transference of the boards. For that purpose, manufacturers need a top-clamping edge of 3 to 5mm on the upper and lower regions of the board to facilitate electronic transfer and avoid elements close to the edge of the board. Clamping prevents the device from assembling automatically.
- Location marks: For the most widely used location marks, manufacturers must distribute the two scores evenly on the board’s diagonal. There also has to be an open area without other circuit features or marks. The size should never be smaller than the target’s diameter. Furthermore, the score shouldn’t be anywhere close to the clamping edge of the board. It’s also crucial to ensure the distance from the side of the board isn’t more than 5mm.
Endnote
The best designers and manufacturers of printed circuit boards should be perfectly aware of the methods of acquiring excellent electrical performance and an inch-perfect layout. These are the prerequisites of designing for manufacturability. When employed appropriately, they will yield high-quality boards that won’t be costly but will always deliver efficiency.
Resource: www.evernote.com/shard
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About Darrin Hein 
Marketing
6 connections, 2 recommendations, 81 honor points.Joined APSense since, May 30th, 2019, From King Williams Town, South Africa.
Created on Aug 18th 2021 01:14. Viewed 202 times.
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