Stackable variable height via package and method
First Claim
1. A stackable variable height via package comprising:
- a substrate comprising a first surface;
terminals on the first surface of the substrate, the terminals comprising a first terminal and a second terminal;
conductive vias on the terminals, the conductive vias comprising reflowed solder, the conductive vias comprising a first conductive via on the first terminal and a second conductive via on the second terminal, the first conductive via having a height from the first surface of the substrate less than a height of the second conductive via from the first surface of the substrate;
a package body enclosing the conductive vias; and
apertures formed in the package body to expose the conductive vias, the conductive vias extending through the package body between the terminals and the apertures.
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Accused Products
Abstract
A stackable variable height via package includes a substrate having a first surface and terminals thereon. The terminals include a first terminal and a second terminal. Vias are on the terminals, the vias including a first via on the first terminal and a second via on the second terminal. The first via has a height from the first surface of the substrate less than a height of the second via from the first surface of the substrate. The package further includes a package body and via apertures in the package body to expose the vias. Forming the stackable variable height via package with variable height vias readily accommodate stacking of additional packages having different types of terminals, e.g., LGA and BGA type packages, as well as variable degrees of warpage on the stackable variable height via package. Further, the vias are formed with a minimum pitch.
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Citations
18 Claims
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1. A stackable variable height via package comprising:
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a substrate comprising a first surface; terminals on the first surface of the substrate, the terminals comprising a first terminal and a second terminal; conductive vias on the terminals, the conductive vias comprising reflowed solder, the conductive vias comprising a first conductive via on the first terminal and a second conductive via on the second terminal, the first conductive via having a height from the first surface of the substrate less than a height of the second conductive via from the first surface of the substrate; a package body enclosing the conductive vias; and apertures formed in the package body to expose the conductive vias, the conductive vias extending through the package body between the terminals and the apertures. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A stackable variable height via package comprising:
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a substrate comprising a first surface; a first terminal coupled to the first surface of the substrate; a first conductive via coupled to the first terminal; a second conductive via coupled to the second terminal, the first and second conductive vias comprising reflowed solder, the first conductive via having a height from the first surface of the substrate less than a height of the second conductive via from the first surface of the substrate; a package body enclosing the first and second conductive vias; and apertures formed in the package body to expose the first and second conductive vias, the first and second conductive vias extending through the package body between the first and second terminals and the apertures. - View Dependent Claims (16, 17)
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18. A stackable variable height via package comprising:
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a substrate comprising a first surface; a first terminal coupled to the first surface of the substrate; a second terminal coupled to the first surface of the substrate; a first conductive via coupled to the first terminal formed by reflowing a first spherical solder ball; a second conductive via coupled to the second terminal formed by reflowing a second spherical solder ball, the first solder ball having a smaller volume than the second solder ball; a package body enclosing the first and second conductive vias; and apertures formed in the package body to expose the first and second conductive vias, the first and second conductive vias extending through the package body between the first and second terminals and the apertures; wherein the first conductive via has a height from the first surface of the substrate less than a height of the second conductive via from the first surface of the substrate.
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Specification