PC & PCI cards

PCI-Express card

Printed circuit boards are connected directly to a motherboard (mainboard) using PC / PCI slot connectors. There exist the PC-AT Standard (also called “ISA”) with a grid spacing of 2.54mm (0.1 inch) and the PCI Standard with a grid spacing of 1.27mm (0.05 inch) for the gold fingers.

Design-Rules:

  • The entire plug area including the gold fingers must not be covered by solder-stop (see diagram)
  • Plated-through holes within the contact area are not allowed
  • The circuit board surface may be freely selected
  • The gold fingers are manufactured using “hard gold” (electroplated gold), Au thickness 0.1 - 2µm

Design parameters

Option PC-card PCI-card
OptionChamfer anglePC-card45°PCI-card20°
OptionChamfer depthPC-card0,5mmPCI-card1,7mm
OptionSpacing gold fingers / PCB contourPC-card0,7mmPCI-card2,0mm

PC-card

Printed Circuit PC card 1

Bevelling of the gold fingers must be avoided; therefore they must have a spacing of min. 0.7mm from the circuit board contour.

PC-card cross-section

(Cross-section at the level of the connector; example: FR4 1.6mm)

PC card cross section

PCI-card

PCB PCI card

To avoid bevelling the gold fingers, a spacing of 2.0mm from the circuit board contour is recommended for PCI cards.

PCI-card cross-section

(Cross-section at the level of the connector; example: FR4 1.6mm)

PCI-card cross-section

PCI-card Example

PCI-card Example