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Is there any PCB company can achieve PCB with such a spec?
1mil hole size of via,
2mil trace
2mil space between traces
15mil total thickness
Only 1 US company can do this and I need find another one for backup.
I am a hardware engineer with 5 years experience and I am getting to Columbia University for graduate study next year.
While my personal savings seem not meet the living cost. Here I ask for any warm heart guys could provide some assistance. In return, I could work for you at part time or full...
I am a hardware engineer and I am getting to Columbia University for graduate study next year.
While my personal savings seem not meet the living cost. Here I ask for any warm heart guys could provide some assistance. In return, I could work for you at part time or full time during summer...
Hi,
I am a hardware & digital engineer in a world class telecom equipment company in China. I am very interested with your joint plan.
Since I am working in Shenzhen, the most dynamic exchange center of electronic components of Asia, it is very convenient for me to provide you high quality...
Power Sequencing
Different IC have different sequencing. Please refer to device datasheet.
Usually, higher power should be on prior to lower power, for avoiding internal power bus latch-up effect, which may damage your device gradually.
Use passive components to implement pi filter on your data lines which supposed to connect with outside world through cables.
In fact, usually conducted emission is easy to pass. The difficulty always in rediation emission test.
Why have to pull down?
If the signal in the trace is static, any position would be ok.
If the sigal will toggle, and your pull down is used for matching line impedence, it usually should be placed at receiver as close as possible.
In Shenzhen, electronics center of China, 4-layer PCB NRE is about $280, die(a kind of filter for SMT) is $150.
And with the 4layer PCB price of $0.027 per square cm.
You can caculate your cost.
The quality is also good. I always design PCB up to 24layers in China.
I designed a video board, which mainly include input video AD, video processor, output video DA.
When testing my design, the board running in video local loop. That is, use a DVD to output CVBS analog video signal to my board, and then video processor forward the data from AD directly to DA...
Here we provide FPGA hardware platform design and manufacture services, the PRICE is very CHEAP, which would not exceed 1/4 to the price of same spec products, which provided by other leading companies such as HARDI or DINI. Not only providing the standard FPGA board, we also provide...
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