company profile

pcb manufacture

surface mount assembly

conventional assembly

panel wiring & cubicles

technical specs

electronic design

pcb quote

how to send us data

contact us

map & directions

questions & answers

Questions and Answers.

What are your standard deliveries?
What about delivery times?
What are the standard material thickness?
What are the standard copper thickness?
What are your smallest track and gap widths?
What is your smallest hole size?
What about gold plating?
What types of solder mask do you use?
What ident colours can I have?
What is your standard finish?
Can I have my boards electronically tested?
Can I look at my Gerber data before I send it to Quartz tsl?
How do I send data to Quartz tsl?
What information do Quartz tsl need for an assembly quote?

Board Types Manufactured By Quartz tsl.

  • · Single sided conventional
  • · Double sided conventional
  • · Plated Through Hole
  • · Multilayer (Currently running upto 6 layers)

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Standard Deliveries.

  • · Fast turnaround is anything below 5 days. Please call about availability of this service. Prices are at premium for speed, and restructuring production to include fast jobs.
  • · 9-5 days we can quote on a staggered scale depending on how many days you require.
  • · 10 working days standard delivery
  • · 15-20 working days economy prices.

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Fast Turnaround.

Quartz tsl can offer less than 5 days manufacturing time on printed circuit boards. The delivery we can offer our clients depends on the type of boards required and the requirements necessary for the board. For instance a straight forward plated through hole board without electronic testing can be manufactured in much less time compared to a multilayer with gold edge connectors and roving probe electronic testing. Therefore Quartz request our clients contact the sales department direct to ascertain requirements and probable delivery.

Contact Quartz tsl.

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Materials & Copper Thickness.

Materials we always have in stock

  • · 0.8 mm
  • · 1.6 mm
  • · 2.4 mm

These are always available in 0.5 ounce or 1 ounce copper thickness. The finished copper thickness i.e. the amount of copper on the tracking surfaces when delivered to the customers is normally calculated as below:-

Base copper thickness + approx. 0.75 ounce.

Therefore a 0.5 ounce base would give a 1.25 ounce finished copper thickness. All Quartz tsl would ask is that clients indicate the finished copper thickness required and all manufacturing allowances will be made by us.

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Materials.

Quartz tsl mainly uses FR4 material. Although if a client has a specific requirement please call sales to confirm we might use clients request.

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Smallest Track & Gap width.

Quartz tsl recommend that "track and gaps" are kept to a sensible minimum of 8 thou. If this is not possible then our production capabilities can accommodate variations.However the price will increase slightly due to the additional difficulties of manufacture imposed by narrower track or gap widths.

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Smallest Hole.

Quartz recommend the smallest finished hole size for a via hole should be kept to 0.6mm if possible. If this is not possible Quartz tsl can accommodate but as above the price will increase to reflect the extra difficulty of manufacture imposed by smaller finished hole size.

Please state all hole sizes as finished board hole sizes. Quartz tsl will work out the necessary drill bit size to achieve the clients requirements.

Usually Quartz tsl drill the clients specified plated through and multilayer finished hole size by adding 0.1mm to the drill diameter. So that when the clients drillred hole is plated. The extra plated copper thickness and the final PCB finish (most likely solder) still leave the hole at the clients specified diameter

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Gold Plating.

Quartz tsl can offer full gold plating facilities for edge connectors and and gold touch pads for keypads. We require a value for the total approximate area of gold on a circuit this includes both sides of the boards or edge connectors. There are various types of gold plated application for different board requirements

Other board finishes available at extra cost are:

  • · Electroless Nickel Immersion Gold , Mainly used for surface mount, the most expensive method available. High conductivity, non tarnishing
    , flat finish for surface mount.
  • · Immersion silver, Also mainly used for surface mount a more cost effective process than above but not necessarily the best for manufacture.

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Solder Masks ( solder resist ).

Photo-imageable solder mask (PI) is a tough, hard wearing, high definition ink used for surface mount applications and where fine resolutions are required. Quartz tsl now use different variations and colours of these inks as a matter of course.

Various coloured inks are available but the two most standard colours Quartz carry are:

  • · Green
  • · Blue

Other colours available at extra cost include red, black Photo-imageable ink.

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Legend ( Silk Screen, Component Ident )

Quartz tsl carry two standard colours for notation printing. They are white and yellow. Most boards can be manufactured with either (green solder mask/white legend) or (green solder mask/yellow legend) or ( blue solder mask / yellow legend).

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Standard Board Finish ,HAL or HASL ( Hot Air Solder Leveling ).

Quartz tsl's standard finish for PTH and Multilayer boards is now hot air level using a Lantronic 204s leveler. This finish has replaced reflow tin lead finishing. HAL is now the standard finish for most boards today and is mainly used in conjunction with surface mount components due to the flat finish which can be achieved with the use of high pressure compressed air. Which is blown at the PCB's as they are automatically lifted out of a very hot vat of solder.

Other board finishes available at extra cost are:

  • · Electroless Nickel Immersion Gold , Mainly used for surface mount, the most expensive method available. High conductivity, non tarnishing, flat finish for surface mount.
  • · Immersion silver, Also mainly used for surface mount a more cost effective process than above but not necessarily the best for manufacture.

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BBT or Bare Board Testing.

Quartz tsl can offer the full services of bare board testing from comparative bare board testing using the golden board method , to small batch testing using Roving probe testing. If you require BBT please mention when giving details for quoting . As certain PCB's do not warrant testing due to simplicity while other PCB's need to testing as a matter of course due to complexity and value of components which will eventually be fitted.

Please contact sales about costs and needs.

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Gerber Viewer.

Take a look at the links page for a few great Gerber viewers from Lavenir ( Viewmate) and Gerbtool.

www.gerbtool.com

www.lavenir.com

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Sending Data.

  • · Check that your design is o.k.
  • · Output all the necessary files.
  • · Zip up all of your files into one file using WinZip etc.
  • · Remember to include a README in the zipped file to identify the job, client and any important specifications you wish to remind us of, order no etc.
  • · Send files to us. The easiest method is to attach the the zipped file to an email or download the file through our modem. You could use a floppy disk, Zip disk or CD-ROM but these methods obviously include time constraints due post, courier, etc.

Goto contact us page for all information about addresses, email addresses etc.

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Assembly Quote Information.

Quartz tsl has a department dedicated to conventional and surface mount assembly.

To give us a chance to best quote our clients. Quartz asks that any client requiring assembly quotes please submit as full a parts list as available. Including any part numbers manufacturers or distributors, if you have Farnell or RS Components part numbers we can track down similar or alternative parts.

If a component has to be manufacturer specific due to integrated circuit timing designs please state this on your parts list to save time.

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Quartz Technical Services Ltd, Stokes Industrial Park, Merrylees, Nr Desford, Leicestershire, LE9 9FE, United Kingdom.
Telephone 01455-824646 Fax 01455-824819 Email sales@quartz-tsl.com or sales@quartz-tsl.demon.co.uk , website designed by Mo Designs 0802-603-473