Invention Application
- Patent Title: Golden unit
- Patent Title (中): 黄金单位
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Application No.: US10402555Application Date: 2003-03-27
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Publication No.: US20030183948A1Publication Date: 2003-10-02
- Inventor: Yew Fei Tham , Vijay Kumar Dharmadhikari
- Priority: SG200201681-4 20020401
- Main IPC: H01L023/48
- IPC: H01L023/48 ; H01L023/52 ; H01L029/40
Abstract:
A ball grid array unit suitable for calibrating an inspection system, comprising a substrate and an array of balls mounted on a surface of the substrate, the balls having a melting point greater than 400 degrees centigrade or a Britnell hardness number greater than 150.
Information query
