Constraining mount system for surface acoustic wave devices

• US 4,845,397 A
• Filed: 03/24/1986
• Issued: 07/04/1989
• Est. Priority Date: 12/19/1984
• Status: Expired due to Fees

• Current Assignee: Tektronix Incorporated (Fortive Corp.)
• Original Assignee: Tektronix Incorporated (Fortive Corp.)
• Inventors: Herrick, Geoffrey C., Sang, Emmanuel
• Primary Examiner(s): BUDD, MARK OSBORNE
• Application Number:
  US06/842,738
• Time in Patent Office: 1,198 Days
• Field of Search: 310/313 R, 310/313 A, 310/313 B, 310/313 C, 310/313 D, 310/348-356
• US Class Current: 310/348
• CPC Class Codes: H01L 2224/48091 Arched
• CPC Class Codes: H01L 2224/73265 Layer and wire connectors
• CPC Class Codes: H01L 2924/00014 the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
• CPC Class Codes: H01L 2924/16195 Flat cap [not enclosing an internal cavity]
• CPC Class Codes: H03H 9/058 for surface acoustic wave devices
• CPC Class Codes: H03H 9/1071 the enclosure being defined by a frame built on a substrate and a cap, the frame having no mechanical contact with the SAW device

Abstract

Apparatus is provided for mounting an electronic component having a pressure sensitive active area, which apparatus permits the component to expand and contract with changes in temperature and which does not introduce stresses into the active area of the component. The apparatus includes a cradle which, when attached to a substrate, forms a partial enclosure of the component but which leaves the active area unobscured. A packaging system is also provided wherein the bottom of the cavity of the lower portion of a standard integrated circuit package forms the substrate to be used in conjunction with the cradle for containing the electronic component.

Claims

1. An electronic apparatus comprising:

a base having a cavity therein;

an electronic component in the shape of a rectangular parallelepiped in contact with the bottom of said cavity, said component having a pressure sensitive active area; and

cradle means attached to said bottom for constraining translational motion of said component, said cradle means forming a partial enclosure of said component without contacting said component while leaving said active area unobscured, said cradle means comprising two L-shaped pieces, each configured to fit on one corner of said ractangular parallelepiped.

2. An apparatus as in claim 1 further comprising spacer means between said component and said L-shaped pieces for maintaining a fixed separation between said component and said cradle means.