Defence - Fighter Plane

PCB Assembly

With facilities in Weymouth and Portsmouth, Ultra Electronics CEMS offers a broad range of contract PCB assembly services and allied processes across the business.

  • Surface Mount Technology
  • Conventional Leaded Technology
  • Special Processes
  • RoHS / Non-RoHS
  • Selective Wave Soldering
  • Inspection Methods
  • Conformal Coating
  • DFM&T Support

Surface Mount Technology

Employing industry standard DEK solder paste printers, Europlacer placement machines and BTU convection air reflow ovens, CEMS achieves industry standards and beyond in the accurate placement of surface mount devices. With many years experience of placing BGA, UBGA, CSP and small profile passives down to and including 0201, the plant offers a cost effective high yield solution to any SMT requirement.

Conventional Leaded Technology

Inspite of the continuing growth in the use of surface mount technology, the use of conventional leaded components in new products continues in strength. Ultra Electronics, CEMS staff have many decades of experience in hand assembly, working to IPC 610 class 3, the high reliability standard of workmanship. With a dedicated workforce and a comprehensive infrastructure of works instructions and procedures, the CEMS plants manufacture product for demanding customers where consistency of quality is essential.

Special Processes

CEMS offers a variety of less common processes, including the use of high melting point solders, intrusive reflow and potting.

Security cleared PCB assembly staff

In most areas within the CEMS business, staffing includes security cleared personnel.

RoHS Regulations

CEMS continues to provide full lead based processing for exempt category product, whilst also having invested in lead-free equipment and process control.

Selective Wave Solder

CEMS employ Selective Wave soldering machines to achieve consistent quality and process control when assembling boards having multiple ground and power planes, high-current connectors or A-typical distribution of components.

Inspection Methods

In addition to the ubiquitous binocular microscopes, used throughout the plant, CEMS has special in-house inspection tools including Ersascope macro optical inspection and 3 dimensional X-ray.

Conformal Coating

CEMS has two in-house Parylene vacuum coating installations, providing the ultimate coating technology for critical pcbs required to operate in rapidly changing environments. Whilst typically only some 20 to 25microns in thickness the Parylene provides an extremely robust insulation and isolation, safeguarding boards exposed to high humidity and condensation, such as avionics boards. Parylene imposes no parasitic effects on coated boards of whatever circuit frequency, due to the formulation of the coating material and its uniform thinness across the board. Parylene is the preferred coating of the avionics industry.

CEMS also offers both dip-coating and spray-coating of Humiseal and other acrylic materials.

DFM&T Support

CEMS engineering staff at Weymouth and Portsmouth are pleased to provide early feedback on plots of new PCB layouts. Often underestimated by design engineers the art of achieving the required electronic functionality whilst designing a cost effectively manufactured PCB assembly, is vitally important as time-to-market shortens and the cost of re-design increases.

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