Specifications for orders at WEdirekt.de

PCB: Data Technology Tolerances Stencils: Data Technology

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Formats

With our CAM Systems we are able to handle all current Data formats. Beyond we hold CAD Tools ready to take over your data directly from your systems.

In details this are

Type	Name	from
CAD	Eagle	www.cadsoft.de
	Target	www.ibfriedrich.com
	GC PrevuePlus	www.graphicode.com
	Altium Designer	www.altium.com
	Pulsonix	www.pulsonix.com
	Ultiboard	www.ni.com
Viewsysteme	GC Prevue
PCB Data	Design	ODB++ Version 6.1
		Gerber 274
		Gerber 274x
	Mechanik	Excellon
		Sieb & Meyer 2000/3000

To avoid further inquiries and thus unpleasant disturbances for you complete and clear data are necessary.

In the following we arranged some information to the different data formats for you.

Eagle

The Eagle CAD Software has a modul to export PCB datas. There is a configuration for the export of the different design- and mechanical-layers.

If we don’t get any further information with your order we use the following setting.

Eagle No	Eagle Name	Description	WEdirekt Name
1	Top	Top-Layer	VS
17	Pads	Top-Layer	VS
18	Vias	Top-Layer	VS
16	Bottom	Bottom-Layer	RS
17	Pads	Bottom-Layer	RS
18	Vias	Bottom-Layer	RS
29	tStop	Soldermask Top	LSMVS
30	bStop	Soldermask Bottom	LSMRS
21	tPlace	Silkscreen Top	SEVS
25	tNames	Silkscreen Top	SEVS
26	bNames	Silkscreen Bottom	SERS4
31	tCream	Pastemask Top	PASTE-VS
32	bCream	Pastemask Bottom	PASTE-RS
44	Drills	DK-Drills	BOHR1
45	Holes	NDK-Drills	BOHR2
2	Route2	Innerlayer 2	L2A00
17	Pads	Innerlayer 2	L2A00
18	Vias	Innerlayer 2	L2A00
3	Route3	Innerlayer 3	L3A00
17	Pads	Innerlayer 3	L3A00
18	Vias	Innerlayer 3	L3A00
4	Route4	Innerlayer 4	L4A00
17	Pads	Innerlayer 4	L4A00
18	Vias	Innerlayer 4	L4A00
5	Route5	Innerlayer 5	L5A00
17	Pads	Innerlayer 5	L5A00
18	Vias	Innerlayer 5	L5A00
20	Dimension	PCB-Contour	KONTUR

Eagle is using among other things octogonal pads which can lead to a false interpretation in other systems. To avoid those difficulties we use round pads instead.

Target

We planned the Layer allocation list in the target System as follows. Please send us with your data expenditure information if there were differences.

Target No	Target Name	Description	WEdirekt Name
16	Copper top	Top-Layer	VS
15	Deletion top	Top-Layer	VS
14	Area top	Top-Layer	VS
2	Copper bottom	Bottom-Layer	RS
1	Deletion bottom	Bottom-Layer	RS
0	Area bottom	Bottom-Layer	RS
18	Solder mask top	Solder Mask Top	LSMVS
4	Solder mask bottom	Solder Mask Bottom	LSMRS
21	Position top	Position Top	SEVS
7	Position bottom	Position Bottom	SERS
19	Solderpaste top	Solder Paste Top	PASTE-VS
5	Solderpaste bottom	Solder Paste Bottom	PASTE-RS
24	Drill hole	PTH/NPTH-Drills	BOHR1
13	Other	Innerlayer 2	L2A00
12	Deletion inside	Innerlayer 2	L2A00
11	Area inside	Innerlayer 2	L2A00
10	Other	Innerlayer 3	L3A00
9	Deletion inside	Innerlayer 3	L3A00
8	Area inside	Innerlayer 3	L3A00
23	Outline	PCB-Contour	Kontur

The copper layer in Target always consists of three layers.
The layer copper contains the tracks.
The Layer area contains ground areas.
The Layer delete contains surfaces around the tracks (to check distances).

Altium Designer

We planned the Layer allocation list in Altium Designer System as follows. Please send us with your data expenditure information if there were differences.

Layer Name Extension	Description	WEdirekt Name
G1, G2, etc.	Mid-Layer 1, 2 , etc.	L2, L3, etc.
GBL	Bottom Layer	RS
GBO	Bottom Overlay	SERS
GBP	Bottom Paste-Mask	PASTE-RS
GBS	Bottom Solder Mask	LSMRS
GD1, GD2, etc.	Drill-Drawing
GG1, GG2, etc	Drill Guide
GKO	Keep Out Layer
GM1, GM2, etc	Mechanical Layer 1, 2, etc.
GP1, GP2, etc.	Internal Plane Layer 1, etc.
GPB	Pad Master Bottom
GPT	Pad Master Top
GTL	Top Layer	VS
GTO	Top Overlay	SEVS
GTP	Top Paste Mask	PASTE-VS
GTS	Top Solder Mask	LSMVS
P01, P02, etc	Gerber Panels
APR	Aperture-File	Aperturetable (RS274X)
APT	Aperture-File	Aperturetable (RS274D)

You can send us your projectfile (xxx.PrjPCB) or your pcb-file (xxx.PcbDoc).

ODB++

ODB++ makes an optimized data exchange possible between Design and manufacturing.

It makes possible shorter turn-around times because all information for the printed circuit board for manufacturers are clearly defined.

It improves the quality by the avoidance of data exchange errors. By the clear definition no different interpretations are possible. Data formats with different dialects, like e.g. RS274X, can on different CAM systems cause different results. Thus substantial damage can develop.

With the expenditure of the layout data we get smaller data sets develop because filling of surfaces with vectors are avoided there.

ODB++ is a fully expandable ASCII data format with the following advantages:

All datas are included in one file. Nothing will be lost.
There is a exact description of the graphical datas. No unnecessary filling of copper areas or pads with special forms which has to be exchanged by the pcb manufacturer.
As many as desired attributes for the elements of the printed circuit board can assign to describe these elements.
ODB++ contains a CAD Netlist description on the basis those that Printed circuit board manufacturer can examine the electrical connections during the production process for their agreement with the original Design.
ODB++ contains a position table in that the layers names, the kinds of the layer the polarity as well as the sequence of the situations in the printed circuit board is defined.
A layer matrix that the parts list and the total structure of the plate defines.
ODB++ contains for the drill- and rout-layers the allocation which drill contact which layer.
Graphic notes can be attached according to the kind of a post it.

Gerber 274

The Gerber format was originally used for the control of photo plotters. There for between the exposure light and the photosensitive film an aperture is brought in which has different form and size depending of the requirements. Open and closing the shutter and moving the table the image is brought on the film. The photo plotters are today replaced by laser plotters.

The Gerber format is a variant of the conventional numerical control format. Of conventional Numerical control formats, like e.g. drilling data, it differs only by the selecting of d-codes. The data are arranged thereby in blocks what is a combination of the commands for the aperture selection, shutter mode (shutter open/close) and movement (X- Y-coordinates) The data are block-by-block processed.

For defining the apertures on the CAM-System an aperture list will be necessary which described the form and size of the apertures. This must be usually entered manually into the CAM-System. This represents a substantial expenditure for the printed circuit board manufacturer.

Example for an aperture file	Example for a Gerber file
D11 round 4	G54D10*
D12 round 8	X0000Y0000D02*
D13 square 4	X0000Y1000D02*
D14 square 8	X1000Y1000D02*
	X0000Y1000D02*
	X0000Y0000D02*

Data Type	Description
Designlayers	one File per Layer
Contour	one File for the Single-PCB / Subpanel Only contour lines with minimal measures (measures for the outline, drill to contour, placement of the Single-PCB in the Subpanel)
Drill Datas	one File for PTH/NPTH/sequentiel PTH Drill Diameter defined in the Fileheader Format should be Excellon or Sieb & Meyer
Aperture Description	please add the aperture table to the data record the table should define the d-codes with form and size
Compression	all datas specified above should be summarized in a compressed ZIP File. The name of the file should correspond to your designated PCB number in your order

Gerber 274x

The extended Gerber Format (RS274X) an extension of the standard Gerber Format. Contrary to the standard Gerber format an aperture list is not necessary list, since the aperture information is contained already in the data file.

Example for an Extended Gerber-File

%ADDD11,C0.004%*
%ADDD12,C0.008%*
%ADDD13,S0.004%*
%ADDD14,S0.008%*
G54D10*
X0000Y0000D02*
X0000Y1000D02*
X1000Y1000D02*
X0000Y1000D02*
X0000Y0000D02*

Data Type	Description
Designlayers	one File per Layer
Contour	one File for the Single-PCB / Subpanel Only contour lines with minimal measures (measures for the outline, drill to contour, placement of the Single-PCB in the Subpanel)
Drill Datas	one File for PTH/NPTH/sequentiel PTH Drill Diameter defined in the Fileheader Format should be Excellon or Sieb & Meyer
Aperture Description	please add the aperture table to the data record the table should define the d-codes with form and size
Compression	all datas specified above should be summarized in a compressed ZIP File. The name of the file should correspond to your designated PCB number in your order

Layerdescription

Please use only clear names in your Datas. Beneath you will find the common used and the internally used by Würth Elektronik Nomenclature.

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Material

We use only FR4 Material.

Printed Circuit Boards consists of a non electrical substrate where one or two copperfoils were laminated on. The substrate of FR4 consists of a glas fibre fabric which is soaked with epoxy resin.

Number of layers

We deliver PCBs from 2 till 8 layers.

PCBs with two layers were called double sided PCB. PCBs with more then two layers were called Multilayer. Hereby several Innerlayer Cores were pressed together with Prepregs (glas fibre fabric soaked with epoxy resin).

PCB Thickness

Available are PCBs with

1,00 mm
1,55 mm
2,40 mm

thickness.

Available PCB sizes

The maximal producable PCB Size is 280,00 x 430,00 mm.

Final Copper Thickness

You will choose between 35µm and 70µm Final Copper Thickness on Inner- and Outerlayers.

Layout

Trackwidth / Trackspacing	150µm / 150µm
Spacing Pad / Pad	150µm / 150µm
Spacing Track / Pad	150µm
Annular Ring	≥ 250µm

The Annular Ring is the copper ring around a drill.
Annular Ring = Pad-Ø minus Drill-Ø

Solder Mask

The Solder Mask fullfills different functions on the PCB. It serves for Protection of the PCB from corrosion, mechanical damage and prevents a moistening of certain surfaces when soldering the PCB. Moreover the Solder Mask improves electrical characteristics like the dielectric strength.

During manufacturing a PCB it can come between the manufacturing processes to Deviations. To avoid printing on a copper pad the pads of the solder mask will made larger than the pads on the copper layer.

Type	Photoimagable Solder Mask
Colour	green
Solder Mask Clearence	100 µm
Minimum Bridge Size	70 µm

Finish Surface

To prevent oxidation of the open copper on the PCBs surface and allow perfectly soldering, the surface can be protected with several materials.

We offer you the following Finish Surfaces:

HAL leadfree	with the HotAirLeveling the PCB is dipped in liquid tin. The tin adheres on the copper surface. The redundant tin is blown off by air.
Zinn (Sn) Silber (Ag) Nickel/Gold (Ni/Au)	With the surface Tin, Silver, Nickel/Gold by an immersion process a thin layer of metal is applied to PCB surface. The advantages are: less thermal load, defined thickness of the metal layer and there can be denser structures on the PCB.

Mechanical Treatment

On the beginning of each PCB the drills for the plated through holes must be drilled. The drill bits are made of tungsten carbide. Drill bits are available from

0,30 mm (Minimum Drill Diameter)

6,00 mm (Maximum Drill Diameter)

Should there be bigger break throughs brought in during the first drill run, there is a possibility to bring in this break throughs with routing or nibbling. Nibbling means that drills are set in a short distance to produce the designated form.

To produce the PCB outline we can use the mechanical processes Routing and Scoring.

With notching the surface of the PCB becomes a defined remaining web. The scoring bit has an angle of 30°. The PCBs can broken afterwards simply apart.

Legend Printing

The legend printing serves to it to facilitate the placement of the parts on the PCB. The printing is applied with a silk screen printing. With a fine fabric covered with a mask the lacquer is printed on the PCB.

Colour: white

E-Test

In E-test procedure the PCB is checked for electrical defects. By putting a voltage on the various endpoints of the PCB defects like shorts and opens can be detected.

For double sided boards we offer E-Test optionally. For Multilayers (> 2 Layers) E-test is inclusive.

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Metal Stencils

To soldering SMD-parts on the PCB a sufficient depot of solder must be available. The finish surface on the PCB has usually not enough for this. For this reason solder paste is brought on the pads. The solder paste is applied with a laser cut metal stencil.

So that the SMD-parts are not be able to slip during the soldering process on the PCB, the parts were fixed with an adhesive. The adhesive can also be applied with a laser cut metal stencil.

We offer you SMD-Metal Stencils and Glueing-Stencils. Developers we offer our economical ECO-Stencil.

Technology

The Metall Stencil were made of refined steel according DIN 1.4301. There were Stencil with thicknesses of 100µm, 120µm, 150µm, 180µm, 200µm, 250µm and 300µm.

For the seating of the stencil in the printer, one distinguishes between stencils in a fixed frame and stencils in a self mounting system. We deliver you Stencils as a rectangle sheet, in a new frame, in a used frame or with a self mounting system.

The screen printing frames are covered with a stainless fabric wire with 80mesh (number of wires / inch) and stuck together with an adhesive on the frame. The Metal Stencil will be stuck into the fabric wire and the printing area is cut out.

For manufacturing Stencils for self mounting systems we need once the type of the mounting system (manufacturer and type) a drawing of the perforated egde.

For positioning the Stencil on the PCB fiducials were needed. For our Stencils 4 fiducials are inclusive.

The fiducials could be manufactured in several ways. These are

fiducial engraved	only a part of the surface will be removed
fiducial cut through	a breakthrough is made
fiducial black filled	a breakthrough is made and filled with a black lacquer

Inclusives

Our base prices contain the following achievements

1000 Pads inclusive
modification of the pads; procentual or absolute
4 engraving fiducials
inscription (engraved): 2 x 25 characters

Options

To extend the durability of your Stencils we offer you the following options:

Edge Protection (not on rectangle Stencils): For this the edges of the stencil are folded over. This minimizes the danger of injuries through sharp edges. The stability of the stencil is increased considerably.
Protective lacquer for adhesives: Cleaning the Metal Stencil with aqueous or solvend based screen cleaner can damage the adhesive and thus the durability of the Metal Stencil will be reduced.
Surface treatment : The cutting process forms at the pad openings and pad walls an oxide coating and to the laser withdrawal side a burr. The burr will be removed within a brushing process. With several polish procedures the surface of the Metal Stencil and the pad walls will be more smoothened. Thus cleaning of the Metal Stencil will be more easily and the release behaviour of the solder paste is improved.

Delivery times

We supply your SMD-Stencil starting from 3 working days. If you had ordered in our online shop also a PCB then we can deliver both products together if you like.

ECO Stencil

The ECO Stencil is a favourable variety for developers and individuals to give here the possibility to us Metal Stencils.

Style

Material	Refined Steel DIN 1.4301
Thicknesses	100µm, 120µm, 150µm, 180µm, 200µm, 250µm
Size	210 x 280 mm (maximum)
Stencil form	only rectangular form is supported
Pads	500 Pads inclusive each further pad will be calculated with 0,05 €
Fiducials	4 engraved fiducials inclusive
Inscription	25 Characters maximum
Delivery times	5, 7, 8, 10, 15 working days

We will do no modifications on the data.

Price and Delivery times for the ECO-Stencil

Base price	54,00 € 500 Pads inclusive each further pad will be calculated with 0,05 €
Delivery times	15 working days: no surcharge 10 working days: surcharge of 10% 8 working days: surcharge of 15% 7 working days: surcharge of 20% 5 working days: surcharge of 25%

Plated through holes			+0,10 / -0,05 mm
Non-plated through holes			+0,10 / -0,10 mm
Hole to hole in one run			+0,05 / -0,05 mm
Contour routed		≤ 6,00mm 6,00 – 30,00 mm ≥ 30,00mm	+0,10 / -0,10 mm +0,20 / -0,20 mm +0,30 / -0,30mm
Contour scored		≤ 6,00mm 6,00 – 30,00 mm ≥ 30,00mm	+0,10 / -0,10 mm +0,20 / -0,20 mm +0,30 / -0,30mm
Outline to non-plated hole	Contour routed		+0,10 / -0,10 mm
Outline to non-plated hole	Contour scored		+0,15 / -0,15 mm
Drill to contour	Contour routed Contour scored Contour routed/scored Contour routed/scored	0,50 – 6,00mm 0,50 – 6,00mm 6,00 – 30,00mm ≥ 30,00mm	+0,10 / -0,10mm +0,15 / -0,15mm +0,20 / -0,20mm +0,30 / -0,30mm
Image to drill			+0,10 / -0,10mm

1 ×	Trilogy of Inductors …	EUR	39.00
1 ×	Trilogie des Inductances …	EUR	45.00