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How to reduce Ground Bounce Reduction on PCBAs
1. Minimize return paths
The shorter the return paths, the lower the inductance between components and the ground plane. Therefore, digital components should be placed directly over digital ground areas and mixed-signal devices should be positioned above bridges between digital and analog ground areas, whenever possible.
2. Use short component leads
Using packages with shorter component leads reduces the series inductance. This is also accomplished by using BGAs and vias. Decoupling capacitors should also be used to funnel disturbances to ground as quickly as possible. It is probably a good idea to use these for all IC and transistor ground pins.
3. Use multiple vias
Another way to quickly dissipate disturbances or noise from your circuits is to use multiple vias to route to ground.
4. Offset switching, if possible
The parasitics that cause ground bounce may not be able to be completely eliminated; however, by offsetting switching times, you can minimize the extent or magnitude of the ground bounce.
5. Use slower switching components, if possible
This technique should be used in conjunction with offsets to allow damping to occur prior to the next switching event. This will prevent it from being added to the noise that may be already present.
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5 Tips to choose an ideal Ceramics Manufacturer
Ceramic printed circuit boards are causing a storm in the electrical industry. With a wide range of uses in different electrical devices, its ease of use, cost, durability, and versatility makes it one of the most sorted PCBs in the market. However, because of highlighted benefits, it has become increasingly difficult to choose the right ceramic PCB manufacturer to invest in. Below are things you should consider before you pick your ceramic PCB manufacturer.
High quality
As expected, choosing a PCB manufacturer that assures you of high-quality products should be your priority. Ideally, a good manufacturer is one that provides you with a board that has no errors. When choosing, take an interest in the ceramic PCB manufacturing process as it will alert you to their business perception. This includes the ability to deliver boards that have the right dimensions, accurately drilled holes, high consistency, and ability to pass the bare board test.
Ability to meet requirements
When looking for multilayer ceramic PCB manufacturers, getting confused by their jargons can be easy. Make it easier by asking them if they can meet your specific requirements. Gauge them by how they will react to inquiring of the standardized formats. Research how they delivered a previous clients request of production of ceramic PCB type and remember to focus on any special offers granted.
PCB manufacture cost
When considering a printed circuit board ceramic PCB manufacturer examine the cost of their services. Ideally, cost reduction with large orders is a good enough reason to settle for a manufacturer. However, when doing so ensure that they offer high-quality products. Overall, it’s better to choose a pricier manufacturer who assures you of high quality than settle for a great deal that offers low-quality PCB.
Materials sourcing
To fully enjoy the various benefits of ceramic PCB advantages take time to consider where they get their materials from. A manufacturer that aims to source from the cheapest place will assure you of a low cost of production. However, with this comes the risk of attaining low material quality as they sacrifice quality for quantity. The right PCB manufacturer will have a select number of places to sort their materials hence provide consistently high-quality PCB from batch to batch.
Board testing
Before you settle and decide to purchase anything long lasting investment, a test drive is always recommended. A good PCB manufacturer will give you the opportunity to test out their boards, possibly under random sample basis. This allows you to check if their product conforms to required standards. When choosing a ceramic PCB manufacturer, aim to pick one that offers you this opportunity to avoid disappointments later on.
#ceramic PCB
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