Drill file	In Excellon format. This file should contain finished tool sizes, and X & Y coordinates.
	Some software also produces a tool list. Send this if you have it. It may be needed.
Gerber files for:	File format-Gerber 274X (embedded apertures), or 274D with aperature list
Layer 1	Top copper ( veiwed from top looking down through to the bottom, pads .017" larger than holes.
Layer 2 -7	The inner layer (signal layers) should have pads .018" larger than finished hole size.
	For ground and power layers the clearances around through holes should be .025"min. larger than finished tool size.
	To avoid copper being exposed at the boards routed edge, the copper needs to be .025" away from board outline.
Layer 8	Bottom copper, copper features within .010" of board outline on top or bottom may be cut by router.
Top Soldermask	Mask relief .008" larger than pad sizes.
Bottom Soldermask	Soldermask areas with less than .005" remaining may have to be removed for processing.
Top Silkscreen	A .007" line is the smallest that can print through the silkscreen.
Bottom Silkscreen	Correct reading from the bottom side.
Board outline	This can be a separate layer, or added to any of the above layers.
Drawing layer	This may be needed if your software outputs the board outline, or layer stack up in it.
	The drawing notes when in conflict with your order form, or our stated tolerances will not be referenced.

 

What information we need to complete your order?

For SINGLE side board:

• Input file for Copper layer (please include in the Gerber name TOP or BOTTOM as single sided boards can have TOP or BOTTOM copper layer)
• Input file for Solder mask layer
• Input file for Component print layer
• NC drill file(s) for NC XY coordinates and Drill tools sizes.

 

For DOUBLE side board:

• Input file for TOP copper layer.
• Input file for BOTTOM copper layer.
• Input file for TOP solder mask layer.
• Input file for BOTTOM solder mask layer.
• Input file for component print layer.
• NC drill file(s) for NC XY coordinates and Drill tools sizes. Note that the drill sizes should be the tool sizes used for drilling i.e. after plating your finished holes will be decreased with 0.1 mm

 

IMPORTANT:

All manufacturing info should be placed in the README.TXT file, as all info outside README.TXT file is IGNORED i.e. what you write in your e-mail body or what you write on your Gerber layers outside your PCB area is going to be deleted and not used nor archived for future use.

Good name conversion practice is to name your gerbers like this: MYPCB-REV-XXX-DATE-YYY-TOP.gbr, MYPCB-REV-XXX-DATE-YYY-BOTTOM.gbr, MYPCB-REV-XXX-DATE-YYY-topmask.gbr, MYPCB-REV-XXX-DATE-YYY-bottommask.gbr, MYPCB-REV-XXX-DATE-YYY-topsilk.gbr, MYPCB-REV-XXX-DATE-YYY-botsilk.gbr, MYPCB-REV-XXX-DATE-YYY-drill.drl, MYPCB-REV-XXX-DATE-YYY-tools.txt if you get used to this you will never wonder which board revision you sent for manufacturing.

 

FILE FORMATS we accept:

 

GERBERS for Copper, Soldermask and Component print layers:

• RS274-X - also know as EXTENDED Gerber format, with embedded apreture info, any aperture sizes above 8 mils is acceptable

NC drill files:

• EXCELLON or S&M drill format, must have XY NC drill coordinates info and Tool assignments info

OUR TECHNOLOGY LIMITATIONS:

• Our minimum track width/space is 0.203 mm (8 mils).
• The (pad/via - drill hole) clearence must be minimum 0.406 mm (16 mils) i.e. the resulting annual copper ring around the drilled hole to be 0.203 mm (8 mils), example: if 0.9 mm drill hole size is used it MUST have pad/via diameter = min. 1.306 mm
• Our minimum drill size is 0.6 mm (24 mils). we can't manufacture boards with smaller drill hole size.
• Our maximum drill size is 5.0 mm (197 mils) we can't drill large than 5.0 mm drill hole on your board, if your board have > 5.0 mm drill it will be replaced with 5.0 mm drill
• Our standard drill tool rack is: 0.7 mm (0.028"), 0.9 mm (0.035"), 1.0 mm (0.039"), 1.1 mm (0.043"), 1.3 mm (0.051"), 1.5 mm (0.059"), 2.1 mm (0.083"), 3.3 mm (0.13").
  If you are using non-standard drill sizes you will be charged additionally see our PRICE web page .
• We are using METRIC drill sizes with step of 0.1 mm and all drill sizes are to be rounded to the nearest metric drill size. For instance if you are using 27 mils, 28 mils and 29 mils drill sizes they all will be rounded to 0.7 mm. To convert from IMPERIAL to METRIC you should divide your IMPERIAL drill size to 39.37 i.e. 130 mils / 39.37 = 3.3 mm and vice versa 1.0 mm = 39.37 mils after rounding = 39 mils. If this rounding is not taken into consideration you can easily make DRC violations - for instance you can use 34 mils drill with 50 mils pad/via which should pass the annular ring copper check as the pad-drill is 16 mils, but 34 mils drill = 0.86 mm will be rounded to 0.9 mm and the 1.27 mm pad/via will fail on the DRC check.
• Our drill hole limit is 500 holes for SSS,DSS and 2000 holes for SSQ,DSQ panels. If you exceed the maximum hole limit you will be charged additionally see our PRICE web page.
• Each layer MUST have text inside or outside PCB area to prevent board production with mirrored layers. i.e. the text on bottom should be mirrored if you look on the board from top.
• Lines under 0,1 mm (5 mils) on component print layer may not be visible.

MATERIALS WE USE FOR PCB PRODUCTION:

Laminate: CC-5400

• Manufacturer: CKC TAIWAN
• ANSI grade FR-4
• Laminate thickness 0.5 mm, 0.8 mm, 1.0 mm, 1.5 mm
• copper 18 um (1/2 oz) or 35 um (1 oz)
• operating temperature Tg > 130 C
• soldering 260C/500F - 40 sec., 290C/554F - 20 sec.
• Dielectric cinstant 1Mhz: 4.0 - 4.5, guaranteed < 5.0
• Dissipation factor 1MHz: 0.02-0.03, guaranteed < 0.03
• Volume resistivity: Ohm.cm > 5*10^14
• UL 94V-0, UL746 CTI 100

Photo resist:

• LAMINAR 5000, manufacturer: Morton Electronic Materials Inc.
• Riston 200, manufacturer: Dupont Electronic Materials Inc.

Solder mask: SD2467DG

• manufacturer: Lackwerke Peters GmbH
• UL 94 V-0, UL file: E80315

 

 

Please send your quotation file package to info@tronixlink.com