Apparatus and method for mounting an electronic component to a substrate and method for spray-cooling an electronic component mounted to a substrate

• US 5,731,542 A
• Filed: 05/23/1996
• Issued: 03/24/1998
• Est. Priority Date: 05/23/1996
• Status: Expired due to Fees

• Current Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: McDunn, Kevin J., Schmidt, Detlef W., Limper-Brenner, Linda, Press, Minoo D.
• Primary Examiner(s): Kincaid, Kristine L.
• Assistant Examiner(s): Ngo, Hung V.
• Application Number:
  US08/652,205
• Time in Patent Office: 670 Days
• Field of Search: 257/704, 257/680, 257/730, 257/729, 257/731, 257/732, 174/52.1, 174/52.4
• US Class Current: 174/553
• CPC Class Codes: H01L 23/4735 Jet impingement H01L23/4336 takes precedence
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
• CPC Class Codes: H05K 1/182 associated with components mounted in the printed circuit board, e.g. insert mounted components [IMC]

Abstract

The electronic component (10) has a die (22) and a terminal (14) coupled to the die (22). The substrate has a first side (20) and a second side (82) and a passage (26) therethrough. The terminal (14) is in communication with the first side (20) and the die (22) is disposed within the passage (26). The apparatus includes a cover (16) which encloses the die (22) and a portion of the terminal (14), and has a fixed portion (28) and a removable portion. The fixed portion (28) includes a connection region coupled to the terminal (14) and an extension region disposed within the passage (26). The extension region has a surface that is substantially coplanar with the second side (82). There is a space (32) between the extension region and the substrate (18). An adhesive (34) is disposed on the surface of the extension region, extending into the space (32). A sealing frame (36) overlaps the space (32) and is in communication with the adhesive (34) and the second side (82).

Claims

1. An apparatus for mounting an electronic component to a substrate, the electronic component having a die and a terminal coupled to the die, the substrate having a first side and a second side and having a passage therethrough, the terminal in communication with the first side and the die disposed within the passage, the apparatus comprising:

a cover, the cover enclosing the die and at least a portion of the terminal, the cover having a fixed portion and a removable portion detachably connected to the fixed portion, the fixed portion comprising a connection region and an extension region, the connection region coupled to the terminal, the extension region disposed within the passage and having a surface that is substantially coplanar with the second side, the extension region and the substrate having a space therebetween;

an adhesive disposed on the surface of the extension region, at least a portion of the adhesive extending into the space; and

a sealing frame in communication with the adhesive and the second side, the sealing frame overlapping the space.

2. The apparatus according to claim 1, wherein the electronic component is one of a power transistor and an integrated circuit.

3. The apparatus according to claim 1, wherein the substrate is one of a printed circuit board and an alumina substrate.

4. The apparatus according to claim 1, wherein the fixed portion comprises ceramic.

5. The apparatus according to claim 1, wherein the removable portion comprises plastic.

6. The apparatus according to claim 1, wherein the removable portion snaps into the fixed portion.

7. The apparatus according to claim 1, wherein the terminal is soldered to the first side.

8. The apparatus according to claim 1, further comprising an epoxy material, the epoxy material coupling the connection region to the terminal.

9. The apparatus according to claim 1, wherein the adhesive comprises a polyamid material.

10. The apparatus according to claim 9, wherein the polyamid material comprises a hot-melt preform.

11. The apparatus according to claim 1, wherein the sealing frame comprises brass.

12. The apparatus according to claim 1, further comprising:

a flange coupled to the terminal, the flange having a plurality of holes therethrough.