Announcement

Collapse
No announcement yet.

Once-off PCB prototype manufacture offer : SUPER cheap PCBs for a limited time!

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • Once-off PCB prototype manufacture offer : SUPER cheap PCBs for a limited time!

    G'day all,

    I'd like to offer anyone the best deal on PCB prototypes I can manage.

    The cost is USD$0.70 per square inch (1"x1", ~25mmx25mm). There are NO setup, silkscreen, or soldermask charges (I will absorb them). This is incredibly low pricing, for double-sided, silkscreened, soldermasked boards of any size!

    This offer is for :
    - Single or double sided PCBs
    - Commercial through-hole plated
    - Solder-masked (both sides)
    - Silkscreened (both sides)
    - Cut to exact size

    No, I'm not some kind of hippie weirdo. I'm submitting about 3 years' worth of my own PCB designs to my fabricator. I have 16 PCBs to be made, so I've combined them, and the board so far is about 25" x 11" (635mm x 280mm). This means the setup, soldermask, and silkscreen cost is a couple of cents per board. I'll absorb that cost, and provide any PCBs for cost plus postage.

    This is a time-limited offer. I'm about to submit my design within the next 10 days (i.e. on or before 21st March). This is non-negotiable. You have 10 days. The clock is ticking!

    If you have a double-sided PCB design you've wanted made up, this is the chance of the year, all kidding aside.

    What I need :

    - Your .PCB file. That means you may need to export your file from Eagle or Orcad or whatever. Make sure it's a protel-compatible format.
    - If you don't have a PCB file option: send me your 1:1 artwork in any graphics format that suits you. PNG is fine, but please don't compress it or use JPG format! I will convert this to a PCB format and produce artwork and gerbers from that, as long as it's not too large! If it's that big, export it to PCB format or use a better layout tool

    The reason I prefer your PCB file is because I will need to check and fix any hole and via sizes to match the fabricator's requirements.

    As a rule of thumb, the limits are as follows (note : one mil = one thou (thousandth of an inch) = 0.0254mm):

    - Minimum track size is 10 mils (0.254mm). This is set in stone. Nothing smaller, anything larger is fine.
    - Minimum pad size is hole size + 20mils. In other words, the pad must be at least 20mils larger than the hole, no matter what size the hole is!
    - Minimum hole size is 24mils
    - Maximum hole size is 260 mils (6.6 mm)
    - I strongly recommend a minimum component pad/hole size to be 62/36mils (for resistors, caps, transistors, and ICS).

    I use 70/36mils for most components, as it's much easier to solder, and gives a good, solid mechanical joint.

    - For DIL headers and most jumpers, use a pad/hole size of 62/40mils (66/40mils if you don't have tracks between the pads)
    - Minimum via size is 50/28mils. Stick to 28mils for the hole size, and try a 60mil pad size for most vias.
    - Minimum clearance : 10 mils. Fixed minimum (sorry).
    - Recommended clearance : 16mils - 30mils

    Minimum track width, minimum hole/via size and minimum clearance are fixed - everything else is up to you.

    But... if you don't have the ability to specify any of these sizes in advance, let me know and I'll see if I can help out. I may have to use my own component footprints for common things like resistors and capacitors, so try not to use half-sizes or weird things like that!

    And if you wish, your design can stay exactly the same as you want, with nothing touched. If it's accepted, and it doesn't turn out as you expect, congratulations.

    For more information, please see http://www.futurlec.com.au/PCBTechnical.jsp

    I'd prefer responses here, but PM me if you like.

    I hope this is helpful for some people.

    Cheers,
    PtB

  • #2
    Thanks for your offer Pete
    this could be a good opportunity to get some square SurfXX pcb's
    unfortunately we only have a picture of the PCB, which I think is 99x68 MM
    6666

    This is a PNG
    Attached Files

    Comment

    Working...
    X