© 2018 by The EuroTech Group plc 

Salterton Road, Exmouth, Devon, EX8 4RZ, United Kingdom  Tel:+44 (0)1395 280100 Email: sales@eurotech-group.co.uk

The EuroTech Group plc
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Surface Finishes
 
Surface Finishes
Metal Finish
In House/Sub Contract
Electroless Nickel/Immersion Gold
In House
Suitable for Lead free solder or Aluminium Wire bonding
Hot Air Solder Level
Hot Air Solder Level
In House
In House
SnPb 37/63 Eutectic tin lead
RoHS compliant Soldering
Immersion Silver
In House
Sterling Silver II RoHS compliant Soldering
0.1um- 0.25um
OSP (Organic Solderability Preservative)
In House
Entek   RoHS Compliant Soldering
0.2 um
Electroplate Gold(hard) over Nickel
In House
Selective  (Edge Connectors ) or All Over Finish
1-6um Nickel / 0.05um- 1.0uM Gold
Electroplate Gold (hard ) over Copper
In House
Selective or All Over Gold Finish
1.0um - 5.0um
Soft Gold
Sub-contract
Suitable for Gold wire Bonding
As Required
PTFE
Immersion Tin
Sub-contract
1.0um - 1.1um
Electroless Nickel / Electroless Palladium / Immersion Gold
Sub-contract
RoHS Compliant Soldering
FR4
Silver Ink
Carbon Ink
In House
In House
By Request
By Request
Metal Finish
In House/Sub Contract
Suitability
Typical Thickness
Ni 4-6Um /Au 0.05 - 0.1um
10um - 25um 
10um - 25um 
Soldermask Finishes
Soldermask /Annotaion/Comp Ref Ink  Finishes
Liquid photoimageable solder mask  Electra EMP110 (air spray)
Standard colour is Green but various colours available on request
Type of finsh Matt and Semi Matt
Screen printed two part epoxy solder mask (Various colours)
Ink Jet printing of notation including serialisation (White only)
Thermally cured notation ink (Various colours)
 
 
Materials
Product
Supplier
FR4
​Isola/ Ventec/ Grace Electronic/ Kingboard/ Shanghai Nanya/ Panasonic 
IMS
​Ventec/ Bergquist/ Rogers/ Cci Eurolam
Hi Speed Laminates
Isola/ Ventec/ Rogers/ EMC
PTFE
Rogers/ Arlon/Nelco/Taconic
Manufacturing Products
Product
Inhouse:
Single & Double Sided Rigid
Rigid Multilayer
Mixed Composite Rigid Multilayer
IMS  ( Insulated Metal Substrates)
Flex
Flex Rigid
Technology
Controlled Impedence
Plannar Technology
High Voltage
High Speed 
Blind Vias
Buried Vias
Copper Filled Vias* 
Resin Filled Vias
Resin Filled Buried Vias
Resin Filled Blind Vias
Plugged Vias
Capped Vias
CTE
Thermal Management
Metal Backed Subtrates

*Available from offshore partners

 
 
Data Guidlines
Preferred Formats
ODB++ (preferred) 
Gerber RS-274-X
Gerber RS-274-D
ASCII drill data
Apperture Lists ( D code, Shape & Size) as plain text
Graphicode *.cwk or *.pwk
Compression methods  PKZIP or WINZIP
DXF
635mm x 610mm
Manufacturing Capabilities
The information below should be used as a guide and in dialogue with our DFM team, as not all combinations are compatible.
Please contact the Sales team for up to date capabilities.
Standard Production
Advanced Capability
Max Production Panel Size 
Typical :-
610mm x 635mm
Board Thickness
Minimum
Maximum
Minimum if Scored
Maximum if Scored
0.25 mm
5.5 mm
0.3 mm
3.2 mm
0.1 mm
Aspect Ratio
Typical :-
10:1
15:1**
Multilayer
Maximum Layers
24 Layers*
40 Layers*
Core Thickness
Minimum
Maximum
0.05 mm*
2.40 mm
0.05 mm
5.5 mm
Copper Thickness
Inner :-
Outer:-
18, 35, & 70 uM
12, 18, 35, 70 and 105 uM
Other thicknesses on request
Other thicknesses on request
Copper Plating ( variable )
Minimum normal production
25uM-50uM
210uM
Minimum normal production
Conductor Width/Spacing
Minimum normal production
0.10mm/0.10mm
0.075mm/0.075mm
Annular Ring
Inner Layer :- Minimum above finished hole size
Outer Layer :- Minimum above finshed hole size
0.15 mm
0.20 mm
0.1 mm
0.15 mm
Inner layer clearances
Design and Production panel dependant but typically :-
Minimum clearance copper plane to non plated hole 
Minimum clearance copper plane  to copper hole 
0.3 mm
0.3 mm
Special Features
Min gap Copper to Circuit Profile
Min gap Copper to Score Centre Line
Smallest Plated Hole dia
0.25 mm
0.50 mm
0.15 mm
0.20mm
0.30mm
0.1mm (Blind Vias)

*40 layers and minimum core thickness 0.05mm available from offshore partners

** Smallest finished hole size 0.075mm and aspect ratio of 15:1 available from offshore partners

 
+44 (0) 1395 280100