Spacing

Applies to	EVERY PRODUCT
If violated	ORDER ON HOLD

• All spaces between two copper entities must be, at least, 6 mils (0,15 mm) far each other.

Track width

Applies to	EVERY PRODUCT
If violated	ORDER ON HOLD

• All copper entities must be drawn with a 6 mils (0,15 mm) or larger track width.
• In case of copper thickness of 70 µm the minimum width must be at least 10 mils (0,25 mm)
• In case of copper thickness of 90 µm the minimum width must be at least 12 mils (0,30 mm).

Anular Ring and Minimum drill size

Applies to	EVERY PRODUCT
If violated	ORDER ON HOLD

• The smallest drill size we can drill is 8 mils (0,2 mm) and it must have an anular ring of, at least, 6 mils (0,15 mm) for drills smaller than 79 mils (2,0 mm) and 8/10 mils for bigger drills.
• Since anular ring affect solderability, it's recomended to use an anular ring of 8/10 mils (0,20 mm) or bigger on every pad and use 6 mils anular ring only for vias.
• For example a vias with a 16 mils diameter (0,4 mm) must have a corresponding PAD diameter of 28 mils (16 + 6 + 6 mils = 28 mils = 0,71 mm)

Anular Ring with Oval and Rectangular pads

Applies to	EVERY PRODUCT
If violated	ORDER ON HOLD

• In case of oval or rectangular PAD the anluar ring is the lesser of the two that you can measure as you can see in the picture.

Solder mask Swell

Applies to	EVERY PLUS type PCB
If violated	ORDER WILL BE APPROVED but may cause functional problems on the PCB

• Solder mask swell should be at least 8 mils (0,20 mm) larger than copper surfaces to keep mask off pads.
  

Silkscreen keepout from copper

Applies to	EVERY PLUS type PCB
If violated	ORDER WILL BE APPROVED but may cause functional problems on the PCB

• The minimum distance is 8 mils (0,20 mm). We will try to correct this problem if occur, but, sometimes, due to particular DCODE shapes used in Silkscreen Layer, the check will pass OK even if there is some silkscreen on copper surfaces. You should be very carefull in checking this because it can cause difficulties in solderability of the components on the board, especially if SMD technology.
  

Mechanical - Contour Routing

Applies to	EVERY PRODUCT
If violated	ORDER ON HOLD

• Copper entities must be at least 8 mils (0,20 mm) far from the border outline. The border outline is routed with a 2 mm routing tool, and, where necessary, with a 1 mm routing tool.
• Any shape is possible, but you have to draw your board outline at least on one layer (copper, soldermask, silkscreen or a specific file for dimensions).

Board to edge clearance

Applies to	EVERY PRODUCT
If violated	ORDER ON HOLD

• The ground plane, particularly in the inner layer of a multilayer Board, must be distant from the edge at least 8 mils (0,20mm). Failure to observe this rule on multilayer board could lead to delamination.

Internal cutout

Applies to	EVERY PRODUCT
If violated	ORDER ON HOLD

• Internal cutout is possible but is subject to approval. The smaller routing tool we can use is 1 mm. If you use internal cutouts please highlight them on the PCB design and, if possible, add a comments to your pcb order.

Pad's internal cutouts

Applies to	EVERY PRODUCT
If violated	ORDER ON HOLD

• If you use Pad's internal cutouts (1 mm min.) the anular ring must be at least 20 mils (0,5mm).

Line size of Silkscreen Printing

Applies to	EVERY PLUS type PCB
If violated	ORDER WILL BE APPROVED but may cause aesthetic problems on the PCB

• The minimum width of the line you use to draw the component overlay on the PCB must be 0,16 mm (6 mils) minimum.

Spacing with ground planes

Applies to	EVERY PRODUCT
If violated	ORDER WILL BE APPROVED but may cause functional problems on the PCB

• It's true that all spaces between two copper entities must be, at least, 6 mils (0,15 mm) far each other, but, when we talk about ground planes, avoid using 6 mils (0,15 mm) spacing if not necessary. Please use instead 8 mils (0,20mm) spacing at least.

Component supply method : mdsrl.it prefers to mount the components supplied by the customer, but may purchase them from Farnell or, in case of non-availability, also from RS and Digi Key, with an additional 20% fee on the suppliers' list price. We ask that the cost of components is paid in advance by bank transfer, credit card or Paypal.


Technology: mdsrl.it assembles SMD components with case equal to or larger than the 0201, but also Through Hole components. Production time: The analysis of the mounting project begins together with the printed circuit board manufacturing. The proper mounting will begin as soon as the bare printed circuit board manufacturing is over, or at the arrival of all the components supplied by the customer, if this is subsequent to the production of the circuit. The mounting time are added to those of the production of the printed bare printed circuit board, then, for example, a printed circuit board with a production time of 4 working days and a mounting time of 6 working days, it will have a total production time of 10 working days. The website mdsrl.it estimated delivery dates correctly when you choose the mounting option. Files needed

BOM (Bill Of Material)

Place File (Pick & Place)

Topography

Components supply

The mounting process can begin once we have received ALL THE COMPONENTS: you are advised to check the availability of those components that you want mdsrl.it to buy for you. If you want to place some components by yourself you must indicate "NO" in the BOM in the "Place yes/no" column

If mdsrl.it supplies part or all of the components

If the customer supplies all the components

To ensure the success of the mounting and avoid delays we recommend a plentiful supply of components:


Components that are not used, will be returned to you along with mounted boards. All components must be shipped in their original packaging or in any ESD packaging to prevent electrical or phisical damage.

FILES

The preferred file format is:

- Gerber RS274-X (Extended Gerber, with embedded apertures)

we also accept:

- Gerber RS274-D (with separated apertures file)

- Eagle .brd file

Your files must also include a "NC Drill File" in one of the following format:

- Excellon

- Sieb & Meyer

The NC Drill file is a TEXT file (you can view it using a text editor like Windows Notepad) that contains a set of XY coordinates.

During the order process it is possible to upload one single file per pcb (a line in the shopping cart): please verify that your files are all compressed in a single file using your preferred format (.zip, .rar, ...). A compressed file containing a pcb design data usually is a few Kb in size. If the compressed file size is more than 2 Mb you are probably sending unecessary documentation or you are using too much and too thin lines to generate ground planes.

Multilayer boards Stack Up

Core: Panasonic R1566 Halogen Free

Prepreg: Panasonic R1551 Halogen Free, 7628 and 2116

Core and prepreg datasheet

Expected thickness 7628 and 2116

All our Multilayer pcb are drilled using an Optical Innerlayer Registration system (OIR by Schmoll) that measures effective size of innerlayer after the pressing stage. This methods allow our Multilayer Boards to have the drills perfectly centered even in the inner layers' pads so you can be sure you will always have a maximized contact surface between inner layer copper and copper inside the holes.

SMD Stencils Technical aspects:

We make SMD stencils on a 150 µm thick Nickel Silver plate, or on INOX for 120 and 100 µm thickness. Maximum overall dimensions are 500 by 300 mm. The smallest pad we can etch is 7 mils (0,18 mm) big. The dimensions of every pad on the stencil will be reduced by 10%. To make a SMD stencil we need the corresponding file (in Gerber format) generated by your CAD software. Alternatively we can generate the stencil file for you, starting from the solder mask layerof your printed circuit board, but it's always preferable to use the one generated by your CAD software.

It is preferable that your stencil design has a border otherwise, please, specify the dimensions on the notes while ordering the stencil.

How to order a stencil:

You can order a stencil in two ways: "standalone" or comkbined order with a pcb obtaining 20% discount on its price.

You can place a combined order with a pcb in two ways:

• 1 - when choosing your PCB options, before uploading the file, it is possible to select the "Add stencil" box and then add your stencil's dimensions and you internal code (optional):

  

  Once you have uploaded the file and put the PCB in cart, you will see the line referring to the SMD Stencil and the fact that is associated with the pcb is confirmed by the presence of a colored dot:

  

• 2 - The other way to place a combined order of a stencil with a pcb is, once you put your pcb in the cart, click on the '+' symbol

  

  a form will appear where it will be possible to write the dimensions and your internal code, if present, of your stencil.

  To order a standalone SMD Stencil, you can start by clicking "SMD Stencils" on the homepage.

  

  or on the left menu bar on every other page

  

  and proceed by specifying the dimensions, choosing the quantity and proceeding to upload the stencil file generated by your CAD.

Data Sheets

Core and prepreg datasheet

Expected thickness 7628 and 2116

Mounting

BOM file (Bill of Material)

Sample BOM file

Place file in different formats (CSV, Text and XLS)

Topography file in PDF format (for ease of vision