Abstract:
An arrangement of pads with selective via in pad for mounting a semiconductor package on a substrate. In order to strengthen the soldered bonds, standard pads, which have a stronger bond, are used in locations of greatest stress and deflection. Vias in pad (VIP) are used at all other locations to improve routing advantages due to their smaller surface area.
Abstract:
A registration coupon (20) is provided for a printed circuit board or other substrate. The registration coupon (20) may be used to determine a hole-to-outer layer feature registration and a solder mask registration. The registration coupon (20) may include a registration hole (30) provided on the circuit board, a metal pad (60) and an anti-pad (40) provided on the circuit board about the registration hole (30), and a solder mask (70) covering the metal pad (60).
Abstract:
An apparatus that includes a substrate, one or more via in pads (202) in the substrate; and one or more vents (204) in at least one of the one or more via in pads (202).
Abstract:
An electronic assembly (10) is disclosed. The electronic assembly (10) includes a lower portion (28) and a first elongate trace (32) formed on an upper surface of the lower portion (28). The trace (32) is covered by an upper portion (26), and an opening (18) formed through an upper surface of the upper portion (26) extends to the trace (32) to expose a portion of the trace (32). A second elongate trace (20) is formed on the upper portion (26). A portion of the second elongate trace (20) positioned in the opening (18) formed through the upper surface of the upper portion (26) contacts the first elongate trace (32) through the opening (18) to form an electrical interconnection (46) between the first trace (32) and the second trace (20).
Abstract:
An apparatus that includes a substrate, one or more via in pads (202) in the substrate; and one or more vents (204) in at least one of the one or more via in pads (202).
Abstract:
A registration coupon (20) is provided for a printed circuit board or other substrate. The registration coupon (20) may be used to determine a hole-to-outer layer feature registration and a solder mask registration. The registration coupon (20) may include a registration hole (30) provided on the circuit board, a metal pad (60) and an anti-pad (40) provided on the circuit board about the registration hole (30), and a solder mask (70) covering the metal pad (60).
Abstract:
An arrangement of pads with selective via in pad for mounting a semiconductor package on a substrate. In order to strengthen the soldered bonds, standard pads, which have a stronger bond, are used in locations of greatest stress and deflection. Vias in pad (VIP) are used at all other locations to improve routing advantages due to their smaller surface area.