Invention Grant
- Patent Title: Epoxy washer for retention of inverted SMT components
- Patent Title (中): 用于保留反向SMT组件的环氧树脂垫圈
-
Application No.: US10313238Application Date: 2002-12-05
-
Publication No.: US06791189B2Publication Date: 2004-09-14
- Inventor: Tom E. Pearson , Christopher D. Combs , Arjang Fartash , Raiyomand Aspandiar
- Applicant: Tom E. Pearson , Christopher D. Combs , Arjang Fartash , Raiyomand Aspandiar
- Main IPC: H01L2348
- IPC: H01L2348

Abstract:
An apparatus to retain an assembled component on one side of a double-sided printed circuit board during reflow of other components subsequently positioned onto an opposite side of the double-sided printed circuit board and methods for manufacturing and using the same. Being formed from an epoxy material, the retainer is configured to be coupled with a component, which is then positioned onto a printed circuit board. During a subsequent solder reflow stage, an ambient temperature surrounding the printed circuit board increases, and the epoxy material is configured to enter a semi-liquid state, flowing onto, and adhering with, the printed circuit board. Upon reaching a typical solder reflow temperature, the liquefied epoxy material is configured to cure or harden, adhesively coupling the component with the printed circuit board. Thereby, the component is inhibited from separating from the printed circuit board when the printed circuit board is subsequently inverted, populated, and reflowed.
Public/Granted literature
- US20030111259A1 Epoxy washer for retention of inverted SMT components Public/Granted day:2003-06-19
Information query