Questions tagged [fpc]
Questions regarding Flexible Printed Circuits. This is opposed to standard PCBs made of solid copper clad boards.
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Can I use a standard flex cable to extend the sensor module cable in a GoPro 11 Mini?
I would like to heavily modify a GoPro 11 Mini, one aspect of the modifications I have in mind is to relocate the sensor module. The issue with this is that it's flex cable is very short so I would ...
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10-contact FPC socket has 12 PCB terminals
I have to place an FPC socket on my PCB. I selected 0.5 pitch and 10 contacts connector. Everyone has 12 PCB terminals instead of 10.
I am confused, what are those two extra pins for?
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What schematic symbol is used for a flex cable?
Generally asking, but primarily for KiCad, what is the schematic symbol typically used for FPC/FFC/flex cables?
That is to say, the flat end which is sometimes stiffened and does not have a connector ...
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Flex PCB controlled impedance
I am absolutely new to flex PCBs. I saw some from time to time but never designed one myself.
Now I'd like to get into this topic and the first task would be to create a ~ 10cm board to board ...
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Choosing a fpc ribbon for MIPI-DSI signals
I am working on a driver board for MIPI displays. I have seen many designs that use a 40pin fpc ribbon cable between the DSI bridge IC and the display board for modularity. Since I want to push all 4 ...
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Most probable cause for unwanted capacitance on serial line?
I'm a PCB rookie and just got the first sample of a 4 layer flex-rigid board that I made.
I'm using 3.3V TTL-UART @ 115200 baud, the stackup is as follows:
CU 35 (signal)
Prepreg 0.7mm
CU 35µm (GND)
...
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2
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Confirm FFC pinout for forward and reverse direction
The first timer is using FFC so I would like to know about the pinout of the FFC forward and reverse cable. Below is an image from eBay showing both types; I have annotated pin1.
Is my understanding ...
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Flex boards routing inside device housing [closed]
I have seen several dslrs such as Nikon teardowns and I really admire the way they design the flex cables and FPCs. What I'm wondering is how do they manage to design such complex flex shapes
folded ...
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Impedance matching and termination on a flexible PCB carrying a 4.8 MHz clock signal, need stack up recommendations
I need some expert advice and I trust I can get it here. I am in the process of designing a system that uses a PDM microphone connected to the the microcontroller via a flexible PCB (4.8 MHz clock ...
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Is there any way to get 2 sided FPC with stiffener?
We need to design an FPC board that consists of components like mezzanine connectors that are centered on 2 sides, top and bottom layers. We have concerns about attaching the FPC board to the main PCB ...
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Joining two rigid PCBs in a non-flat configuration [closed]
I would like to design a very minimal split keyboard like the GergoPlex or Ferris Sweep, but my wrists get sore easily with extended pronation and ulnar deviation.
As such, the design I have in mind ...
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How to open this FFC/FPC connector?
I am working on an old minidisc player (Sony MZ-E900) and the motor is connected via this FFC/FPC cable. I have downloaded service manual for this model and for this flexbile connector there is only ...
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Using a straight end FPC connector for a tapered end FPC
I am new to working with FFC/FPC, and had a question about the different types of ends for these cables.
I have a piezomotor that connects via a 1mm pitch tapered end FPC. I need to connect this to a ...
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What are these notches in an FPC for?
We are given these cute LCD displays (China made of course, drawing here on page 4.) There is a pair of notches on the connecting FPC. They are not next to the contacts (I've seen some connector ...
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How to implement a Bookbinder PCB design in Altium
I am planning to design a bookbinder with airgap rigid flex PCB using Altium.
Based on guidelines from Altium, and various other sources, it is important to have "staggered lengths", to ...
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Microstrip on FPC board
Do anyone know, what is the strange track on FPC board on image below?
My guess is, it is something like a microstrip track.
The image is for a FPC board, that measure cell voltage of batteries.
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What are the concerns of vias-in-pad on flex PCB without filling?
My PCB fab said they can't fill the via-in-pad for flex PCB. The min hole size is 8mil with 20mil diameter. From google search, the concern is the solder will be drawn into an open via which could ...
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At what data rate should we consider PCB via back drilling? How about flex PCB?
Hello community member,
I have a 4 layer PCB. At what data rate should I consider via back-drilling? Also do we back-drill 3 layer flex PCB? Thanks.
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FPC connector pinout
I am thinking of using the 0526101633 FPC connector in my design.
I need 16 pins to be connected. When looking at the schematic symbol I am a bit confused as to which what does 1A and 1B mean. Are pin ...
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Can you physically connect an FPC to a FFC socket that has the same pitch but more circuits?
I'm interested if it's possible to make a 50 pin FPC breakout board and use it for cables of less pin count but of the same pitch?
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Does the impedance profile of flexible PCBs include the adhesive layers?
I'm looking at this page on PCBway and trying to get these values into Altium in order to get the right impedance profile.
As I understand, I should use the finished copper thickness to get the right ...
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Not detecting closed circuit in Goldtouch keyboard key presses
Context
While converting the Goldtouch Go!2 Mobile keyboard from Bluetooth to micro USB, I'm experiencing some difficulties in registering the keystroke signals coming out of the FPC connector.
Setup
...
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How to design FFC's/FPC's Even/Odd pattern in Altium
I want to design the even/odd pattern of FFC (flexible flat cable) in Altium. I don't know the exact term used to describe it, but the recommended drawing of this FFC from its target connector's ...
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Is the increase of impedance over a small hatch area on a FlexPCB negligible?
I have a FlexPCB with 4 layers and total thickness of about 200 µm. The second layer is a ground plane that is solid copper over the entire FlexPCB. To increase flexibility of the FlexPCB, I want to ...
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Does the signal to the NFC antenna require shielding?
My design requires a NFC antenna to be located on a different board and due to space limitations, a uFL connector can't be placed for a mini coax connection. A flex cable solves many of the design ...
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What kind of FPC is this, and what should I couple it with?
I'm working with these planetary geared micro stepper motors which come without a datasheet or any information from the sellers. I'm having a trouble figuring out how I should mate the FPC cable, can ...
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How do cheap Raspberry CSI-2 cables get around differential impedance matching
I am trying to design a circuit on (double sided) flex PCB that happens to have CSI-2 signals on it.
I would like to find out what is wrong with my deductions presented below, or what part of ...
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Trying to build custom electronics connection to a motorized zoom/focus lens
I'm a beginner when it comes to electronics, I had some success with pretty simple arduino based projects like blue tooth controlled stepper motor assemblies using well documented drivers and ...
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How to connect a flex ribbon cable to a screw terminal block?
Does anyone have ideas on how to mate a flex PCB with a screw terminal block?
Some background:
At my workplace, we're using the following Keysight DAQM900A Datalogger MUX cards:
In the past we've ...
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Extension from OLED display to driver board
I have purchased this display for a prototype in development.
Product: https://www.displaymodule.com/collections/oled/products/2-8-256x64-monochrome-graphic-oled-display-module-spi-mpu
Datasheet: ...
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What is the mechanism of water damage to this flex circuit keyboard track?
I have a wireless Logitech keyboard which suffered water damage: after it got submerged in water, some keys stopped working. It was very strange to me, since I guessed that if some important element ...
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Change FPC Pitch
I recently had a PCB made with a FPC on it. Unfortunately its the wrong pitch (Yes really stupid oversight) and so we need a solution that doesn't involve ordering a new board. The board has a 4 pin 0....
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Is it possible to mount a 7-Segment on an FPC and what points need to be considered?
I am designing a project with a flat flex PCB, in which I would need a 7-Segment display similar to below picture.
I would like to avoid to add an extra PCB with a connector or hot-bar just for the ...
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How to lay out Gerber files for rigid-flex PCBs
I want to move to rigid-flex PCB design for our product, to eliminate need for the FFC cables we currently use.
I have found vendors providing this service but I cannot find any information on how to ...
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Locally hatched ground plane to increase differential impedance
I am designing a flexible PCB to carry two types of differential signals. One is about 1.2Gbps 100R differential impedance, while the other is only 3Mbps, with much more tolerance on the impedance.
...
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Help identifying this damaged FFC/FPC connector
I am trying to identify this damaged connector on one of the PCBs of a Konica Minolta Vivid 910 laser 3D scanner. I wish to find a suitable match for replacement.
It connects the main logic board with ...
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FPC Connector - Matebook X Pro
Please excuse me if this is not the right place to ask this question.
I have been looking for a specific ribbon cable (motherboard to LCD board) for my Huawei Matebook X Pro for more than a year now ...
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What is the meaning of these datasheet dimensions?
I am trying to buy a part for a project and I can't seem to understand what, ("B = A + 0.83[4.00]") means. Is this datasheet in mm or inches? Your help would be greatly appreciated.
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FPC Cable Repair
Is it possible to repair this type of FPC cable? I am a filmmaker and have just basic soldering skills and know this type of repair is beyond me. This is from a LCD Touchscreen. Is this cable ...
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Looking for a 14 pin FFC, FPC connector for 1.8" display with unused space on the sides
Good evening,
I'm looking for a connector that can house 14-pin connector display.
Problem is that it has some extra space on the side which would not fit into regular connector.
Does anyone knows ...
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Fixing the pins in a flex cable
This is a flex cable from a kindle that connects the motherboard to the lcd.
The pins at the edge are broken and not making any contact with the connector.
Is there any salvation for this?
If there's ...
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FPC Connector type for Echo Dot 2nd gen
currently i'm trying to interface Alexa LED/Microphone board with Raspberry pi. The big Alexa (1 Gen) has a 0.5mm pitch - I got an 0.1" adapter for this and it's working. Now I'd like to do the same ...
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Pitch of FPC connector
I need to interface a display which has an FPC connector. I'm a bit confused as to what is the pin pitch. The datasheet's drawing is a bit confusing because the dimension lines are a bit off-centered ...
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How to connect multiple ground pins in a FFC connector
So I have a bunch of these FFC connectors shown here, and a lot of the middle pins are actually ground pins (highlighted in green). I have a multi-layer board, so I want to route all these grounds to ...
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Splitting Nomex FPC Jumpers
I have been splitting PTFE FPC jumpers using an Exacto knife and that works fine, but the Nomex FPC connectors are cheaper. The PTFE is a tough, but pliable, homogeneous material so cuts just fine ...
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Save My Camera! (FPC Breakout?) [closed]
I recently took apart my camera to solder some wires onto the take video button so I could trigger taking videos remotely. The button for this was housed inside a plastic housing and all I could find ...
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What is a "mechanical pad"?
I've bought an FPC breakout stick from: Adafruit. In its datasheet, it mentions a "mechanical pad", which is the exposed copper bar near the connection pads. What does it do, and can I utilize it ...
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EMI filtering on multi-FFC assembly
an aspiring electronics engineer here. I do some electronics design for work and I'd like to know the following:
If I have an assembly of a main board, to which an FFC cable connects into a second ...
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How do I design my own FFC cable
I need to design a custom FFC cable for an electronic device (about 10cm and 34pins) I messaged a manufacturer who could make custom ffc but he needs a layout or something and I don't have experience ...
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Signal placement in flat ribbon cable, FPC or FFC with digital and power signals
I want to interface different boards with FPC/FFC or ribbon cable and I was wondering about the placement of the signals in the cable.
I plan to have a 39 signals FPC with :
1 SPI bus (SCK, MOSI, ...
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