Double Sided Board

CCTC manufactures double sided printed circuits exclusively in the headquarter Plant I. The major part of these boards with 2 surfaces is attributed to the High-End applications. Double sided printed circuit boards represent around 5% of the total volume.

Materials

Item Current 2010 2011
Mass
Production
Try Run Mass
Production
Try Run Mass
Production
Try Run
Resin System
FR-4 Normal Tg Yes --- Yes --- Yes ---
FR-4 Middle Tg Yes --- Yes --- Yes ---
FR-4 High Tg Yes --- Yes --- Yes ---
Halogen Free FR-4 Yes --- Yes --- Yes ---
Rogers Yes --- Yes --- Yes ---
BT Yes --- Yes --- Yes ---
Polyimide Yes --- Yes --- Yes ---
RCC and Prepreg
Normal Epoxy Yes --- Yes --- Yes ---
Halogen Free Epoxy Yes --- Yes --- Yes ---
Current Supplier 1. Shengyi; 2. Panasonic; 3. Goworld; 4. ITEQ; 5. Grace; 6. Rogers; 7. Nelco; 8. Arlon; 9.MGC;
10. LG Chemical

Surfaces

  • OSP
  • ENIG
  • Selective ENIG+OSP
    (Special surface for BGA soldering)
  • Gold contacts
  • Immersion Tin
  • Immersion Silver
  • Leadfree HAL
  • Carbon Print
  • Peelable mask

Usage concept

The production format of printed circuit producers is mainly related to the basis material format provided on the market by the suppliers.

The resulting production formats for printed board manufacturers are therefore usually one quarter or one sixth of these formats, without cutting error. For example: USA format for basis material vendors = 1220 x 920 mm, one quarter of this format = 610 x 460 mm (production format of the printed circuit producers). The highly automated plants seldom operate with more than six different formats, which all basis material formats are reproduced all over the world with, without cutting error.

The sophisticated fabrication of printed circuits, like CCTC’s, are optimally designed and adjusted, in all cost relevant and format related processes, according to these production formats. Only this way can a high quality fabrication standard be guaranteed.

The production format surface, that is effectively usable by the customer, is also called « net surface ». It is the surface without the processing overhead that is necessary for the press systems, the resin fluxes, the capture systems for the press processes, the test systems etc... Each printed circuit producer has processing overhead dimensions that are slightly different according to his own production.

To reach optimal costs and therefore prices, the usable format defined by the customer should correspond, considering the net surface and without cutting error, to a multiple of the formats that are exploited by the printed circuit producers.

Taking for example into account the interspaces = cutter diameter, or without interspace with the scoring technique.

The higher the percentage of material usage is, the lower the cost per delivered dm² and, as a consequence, the better the price. A positive effect on the environment and for the ecology is achieved thru less waste production. The required format tables will be provided on request to the customer fabrication department.

Panel-Design

Information

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