Designing a FLEX PCB? You Need To Know This ....

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Күн бұрын

Everything important you need to know when designing FLEX PCBs. Explained by Ata Syed
Links:
- Ata's LinkedIn: / atasyed
- PFC Flexible Circuits: www.pfcflex.com/
- FEDEVEL courses: courses.fedevel.com/
Chapters:
00:00 What this video is about
01:32 What is Stiffener
03:14 What is Coverlay
05:36 Soldermask on Flex PCB
07:44 Adhesive
11:35 Favourite stackup?
18:39 Copper in Flex PCB
23:53 Strain relief
26:56 Preventing FLEX PCB cracking
29:25 Bend radius
34:33 Teardrops
39:49 Routing - sharp corners and angles
42:50 Space out equally
45:42 Shift tracks between layers, gold fingers coverlay
49:07 Overlapping coverlay and stiffer
51:00 Documentation for FLEX PCB manufacturing
53:47 Aluminum stiffer
57:04 Via 20mil from stiffener edge
57:41 Stiffener with holes (+ plating)
1:02:37 Holes in corners
1:04:39 Cross hatched vs Solid GND planes in FLEX PCB
1:09:10 Shielding
1:10:41 Finishing
1:12:05 Gold fingers finishing
1:14:13 How a four layer FLEX is made
1:15:20 About 3 layer and odd layer FLEX PCBs
1:17:11 Layer and thickness limitations
1:19:55 2mil spacing
1:22:35 Copper plating vs. FLEX
1:26:59 Buried VIAs and FLEX
1:28:27 uVIAs in FLEX
1:29:17 Minimum Trace and Space on FLEX PCB
1:30:46 Minimum VIA and about holes
1:34:08 About Panelization
1:35:14 About FLEX PCB manufacturing process
1:38:04 How stiffeners are applied on FLEX
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- Sign up for online courses hosted on our platform: marketplace.fedevel.education/
- Sign up for my Hardware design and PCB Layout online courses: academy.fedevel.com/
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- Or sign up for my Udemy course: www.udemy.com/learn-to-design...
It is much appreciated. Thank you,
- Robert

Пікірлер: 23

@MadaraMr8lol Жыл бұрын

There are fewer and fewer hardware topics left to cover on this channel, I really appreciate your effort Robert, thank you!

@RobertFeranec Жыл бұрын

@seanm2511 Жыл бұрын

There may be "fewer and fewer hardware topics" to cover. There are years worth of content to mine covering it all in depth.

@DannyBokma Жыл бұрын

Thanks so much for doing videos like these, although the target audience is small the audience is the "high end designer" and it saves me / us SO MUCH time researching.

@Stewi1014 Жыл бұрын

Ata is awesome. Tonnes of brilliant insight into designing flex PCBs. They feel a lot more accessible now to me as someone who's only worked with rigid PCBs.

@peteraland2066 Жыл бұрын

Just found this video right when I need to do rigid flex PCB for my work, 15 minutes in and I already grateful because I learn a lot, thanks!

@michaelershov4653 Жыл бұрын

Great video, thanks Robert! I often saw black flexible cables and thought it was a special mask, but it turns out to be EMI shielding. Very informative, keep posting videos!

@atasyed5160 Жыл бұрын

It could be EMI shielding or it could also be black coverlay. A lot of black FPC are actually black coverlay.

@Fleche_FPV Жыл бұрын

EXTREMLY interesting !

@bobwang9744 8 ай бұрын

Really appreciate it!

@MaxWattage Жыл бұрын

Thanks, very interesting.

@aroojiqbal4081 Жыл бұрын

Please guide about layout guidelines of rigid pcbs for space applications. Is it allowed to define power and gnd split on same plane if seperate planes cannot be defined. How to use signal integrity rules in altium designer for beginners.

@giannisasp1208 Жыл бұрын

Very interesting information, thanks!!

@RobertFeranec Жыл бұрын

Thank you very much giannis

@timun4493 Жыл бұрын

couldn't you pick and place your stiffeners ? that tightly coupled bus bar looks like a great idea

@atasyed5160 Жыл бұрын

Yes you can but the issue is that in order to bond stiffeners with flex, you need to put put the boards in press machine to ensure bonding is good. When you put them in press machine, you have to create type of a fixture (basically a FR-4 panel with cavities for stiffener), and put as many boards in a fixture as possible to maximize efficiency. Bottom line is that it is a very labour sensitive process. I am not saying that its complicated process (in most cases its not that difficult) but its if very labour sensitive. If you don't use press to bond stiffeners to flex, you may have delamination between stiffener and flex or stiffeners may even come off.

@TheEmbeddedHobbyist Жыл бұрын

We used a flex pcb which had 20 twisted pair conductors and fully screened. so there were plated through holes in the flex as he tracks swapped sides to form the twisted pairs. the screen had to go into a x-hatch pattern where the flex had to bend. after all that design effort would you believe it we got one connector 180 deg out. So had to do it all over again.

@RobertFeranec Жыл бұрын