Multiple layer printed circuit board having power planes on outer layers
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 11, 2001
Grant Date -
N/A
app pub date -
Dec 18, 1998
filing date -
Dec 18, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A multi-layer printed circuit board includes power planes located on outer conductive layers. The outer conductive layers are patterned to accept circuitry, such as integrated circuits and surface mount devices. Mounting pads are provided on the outer conductive layers which include plated through vias for electrical interconnection with other conductive layers of the printed circuit board. To increase solderability, the plated through vias are located on the mounting pads such that they are covered by the circuit component mounted thereto. By locating the vias under the electrical components, such as surface mount capacitors, the quality of solder fillets is increased. To enhance heat dissipation, openings are provided in solder masks located on exterior surfaces of the outer conductive planes. These openings are located in the solder mask to expose the conductive plane. As such, the openings are located in areas where circuitry is not mounted to the printed circuit board.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully