To achieve accurate positioning of components, surface mount assembly PCBs must be designed to ensure that component pad (land pattern) dimensions and layout are in accordance with good practice and t...
PCBWay
Nov 21,2013
1483 views
The best-expected manual insertion rate of through-hole components is 200 to 400 components per hour. Automation has been a prime objective for printed circuit board assemblers since the electronics i...
PCBWay
Nov 21,2013
2139 views
Fundamentally, there are two PCB design systems - through hole and surface mount. In through-hole process, components have connecting pins that are pushed through plated holes (vias) in the PCB and pr...
PCBWay
Nov 21,2013
571 views
Surface-mount circuitry of the PCBs does not require a hole for each component lead. Automated testing, however, may require vias on every node. The holes were never an issue with through-hole circuit...
PCBWay
Nov 20,2013
555 views
The older technology for op amps and other components is through-hole. Components are constructed with leads that insert through holes in the board hence the name. Through-hole components, due to th...
PCBWay
Nov 20,2013
651 views
For example, if the capacitance formula is applied to the following trace: 4 Layer board signal routing next to ground planeBoard layer thickness: 0.188 mmTrace Width: 0.75 mmTrace Length: 7.5 mm A ...
PCBWay
Nov 20,2013
9145 views
Reflections and matching are closely related to loop antenna theory, but different enough to warrant their own discussion. When a PCB trace turns a corner at a 90 angle, a reflection can occur. This i...
PCBWay
Nov 20,2013
888 views
There has been a lot of confusion in the past over what is the optimum order for PCB layers. Take, for example, a 4-layer board consisting of two signal layers, a power plane, and a ground plane. Is i...
PCBWay
Nov 20,2013
610 views
Double-sided boards, in spite of their benefits, are not the best method of construction, especially for sensitive or high-speed designs. The most common board thickness is 1.5 mm. This separation is ...
PCBWay
Nov 20,2013
568 views
Very simple consumer electronics are sometimes fabricated on single-sided PCBs, keep-ing the raw board material inexpensive (FRC1 or FRC2) with thin copper cladding. These designs frequently include m...
PCBWay
Nov 20,2013
640 views
PC Board materials are available in various grades, as defined by the National Electrical Manufacturers Association (NEMA). It would be very convenient for designers if this organization was closely a...
PCBWay
Nov 20,2013
529 views
Normal design cycles, particularly of large digital boards, dictate layout of the PCB as soon as possible. The digital circuitry has been simulated, but in most cases, the produc-tion PCB itself is th...
PCBWay
Nov 20,2013
523 views
Op amp circuitry is analog circuitry, and is very different from digital circuitry. It must be partitioned in its own section of the board, using special layout techniques. Pinted circuit board effec...
PCBWay
Nov 20,2013
534 views
A digital logic circuit consists of a collection of interconnected parts. Most parts are integrated circuits, but in practical designs there are usually a number of passive components and connectors. ...
PCBWay
Nov 20,2013
576 views
Even though printed circuit board routing is a venerable problem in computer-aided design, fully automatic routing of densely packed boards remains an elusive goal. In current industry practice, a pro...
PCBWay
Nov 20,2013
538 views
A printed-circuit board is like a multilayer sandwich of routing layers. In general, the current PCB technology offers as many as 30 or more routing layers. Referring to Figure 1, the PGA package and ...
PCBWay
Nov 20,2013
700 views
With the viewpoint of electronics system design automation, a system design is usually divided into different levels of design processes. The effect of interconnect interface occurs when integrating d...
PCBWay
Nov 20,2013
661 views
Newark's element14, the first collaborative community and electronics store for design engineers and electronics enthusiasts, today announced a partnership with PCB Assembly Express to provide its qui...
PCBWay
Nov 20,2013
862 views
"PCBs" redirects here. For printed circuit boards, see printed circuit board. PCB warning label on a power transformer known to contain PCBs. Chemical structure of PCBs. The possible positions of ...
PCBWay
Nov 20,2013
822 views
EPA provides various paths for the public to access information about PCBs. On this web site you will learn about PCBs as they are managed under the Toxic Substances Control Act (TSCA) and the PCB reg...
PCBWay
Nov 20,2013
701 views
| Ranking | Name | Answers |
|---|---|---|
| 1 | _ Floppy Lab | 4 |
| 2 | PCBWay Team | 3 |
