Invention Grant
- Patent Title: Pre-plating of solder layer on solderable elements for diffusion soldering
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Application No.: US16987790Application Date: 2020-08-07
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Publication No.: US12069802B2Publication Date: 2024-08-20
- Inventor: Alexander Heinrich , Alexander Roth
- Applicant: Infineon Technologies AG
- Applicant Address: DE Neubiberg
- Assignee: Infineon Technologies AG
- Current Assignee: Infineon Technologies AG
- Current Assignee Address: DE Neubiberg
- Agency: Murphy, Bilak & Homiller, PLLC
- Main IPC: H05K1/02
- IPC: H05K1/02 ; H05K1/09 ; H05K3/34

Abstract:
A pre-soldered circuit carrier includes a carrier having a metal die attach surface, a plated solder region on the metal die attach surface, wherein a maximum thickness of the plated solder region is at most 50 μm, the plated solder region has a lower melting point than the first bond pad, and the plated solder region forms one or more intermetallic phases with the die attach surface at a soldering temperature that is above the melting point of the plated solder region.
Information query