FAQ - Frequently Asked Questions

For the most circuit boards you can use our Online Circuit Board calculator to generate an offer and to order.

For SMD stencils, please use the Online SMD-Stencil calculator.

For toroidal transformers, please use the request form for toroidal transformers or the order form for toroidal transformers.

For reordering , please login into your online account. Under the menu item reorder you see all of your orders as from 15.10.2012.

After clicking on "Reorder" you can adjust the desired working days and number of pieces and reorder smoothly.

Orders placed before 15/10/2012 must be manually assigned to your account. Please contact us in this case.

You can also choose the traditional ordering method by Email / Fax as alternative to the online calculator. For this, we need your order, the layout data and all relevant information of the PCB. Please note that orders without using the online calculator may differ from the working days as well as the price, since the degree of automation for online orders is very high.

You can attach your circuit board and smd stencil data within the online circuit board calculator during the order process.

You can attach your data for toroidal transformers in the quotation form for transformers or order form for transformers, respectively.

Please send data for special enquiries or for toroidal transformers by email.

We solely process digital data (e.g. GERBER data and drill hole data).

We prefer to process data in ODB++ and Extended GERBER formats. We can also import your data from the following programs:

  • EAGLE
  • Target 3001
  • Sprint Layout

If you send us standard GERBER data, we will also need the additional D-Code table(s) and drill hole data, preferably in Excellon format; but all other popular formats are also acceptable, of course.

If you make use of our cost-free data import (from EAGLE, Target, etc.), we only export the standard layers. Custom layers used must be explicitely stated in written form. Please note also our Design-Aid for EAGLE-Users.

We reservethe right, to prepare and optimize your data for production.

This includes (amongst others):

a) We crop the copper at the PCB edges (shaving):

  • 200µm spacing to milling edges
  • 500µm spacing to scoring edges
  • 200µm circular for npth drills

Note: Short-circuits are avoided if the PCBs are to be inserted into conductive housings, avoidance of injuries and better durability of the boards.

b) Scale-up of the solder-stop mask:
When solder-stop is applied, a certain production tolerance and thus a small offset to the conductive pattern is possible. To prevent your pads from being overprinted by solderstop, we scale-up the pad`s clearance (if necessary) 50-125µm, depending on the design.

c) Optimisation of the marking print in relation to the pads (clipp-off):
The marking print is cropped for 100µm from the solder-stop mask. This is necessary, as overprinted solder-pads give solderability problems.

d)
Font width of the marking print:
The font width of the marking print will be scaled up to a minimum of 150-180µm (design related), otherwise the marking print is to small, blurry or non-existent.

The manufacturing time does not begin until all documents necessary for production have been submitted completely. The current (partial) day is counted only when the circuit board data/documentation has been presented to us before 9:00 am CET or CEST, respectively.

Please note: Day of dispatch does not count as working day.

If not stated explicitly, the given prices for printed circuit boards refer to:

  • min. conductor trace -width / -spacing: 125µm (5mil) and
  • min. via diameter: 200µm (8mil)

as well as a production according to IPC-A-600G Class 2.

All base materials used in the circuit boards and all available final surfaces for the circuit boards are RoHS compliant (with the exception of HAL lead-tin SnPb).

Our toroidal transformers and SMD stencils are also RoHS compliant.

During the E-Test, a net list is generated on the basis of the PCB data provided by the customer. This net list displays all connection routes from parts and connection points.

After the circuit boards have been manufactured, electric voltage is applied to the connections given in the net list, through testing probes. Therefore not all pads need to have a testing mark.

Through the E-Test, short circuits or open conductor traces can be identified and localized, guaranteeing the functionality of the circuit boards.

At Multi-CB all PCBs ≥ 2 layers are tested by E-test.

The testing with E-test may not assure the perfect accuracy of the goods, for technical reasons. The customer should perform an incoming goods inspection.

Multi Circuit boards Ltd. delivers exclusively to business customers and public institutions.

Shipping is handled by UPS, or by customer pickup. If you have selected express service for the manufacture of your order (Express), then shipping occurs via UPS Express Saver by default, unless otherwise requested. See shipping costs and options.

Customers within Germany may pay in advance or at pickup or are billed with an invoice.

International customers are expected to pay for the first order in advance, and can thereafter aks to switch to payment per invoice.

Please inform us as quickly as possible in case of any problem that may necessitate a return. We always strive to reach an equitable and non-bureaucratic cooperative solution. Please observe that complaints can be honoured only in relation to the actual product as ordered. In cases where the complaint is justified, we will deliver corrected items as soon as possible.

Please send your reclamation by email to info@multi-circuit-boards.eu.
Please list:

  • delivery note number
  • article number
  • error description
  • photo if necessary

Our products have following customs tariff numbers:

  • 853 400 19 Singlesided bare printed circuit boards
  • 853 400 11 Multilayered bare printed circuit boards
  • 850 431 80 Toroidal transformers ≤ 1kVA
  • 850 432 80 Toroidal transformers > 1kVA
  • 732 690 98 SMD stencil, stainless steel