Ni-P Contact Coating for Cost-Optimized Data and Power Connectors
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Solution Overview
Problem
Existing plug-and-socket connections require a multi-layer system with gold for effective data and power transmission, which is costly and inefficient in production, and there is a need for a cost-optimized solution that maintains signal and power transmission quality.
Innovation Solution
A plug-and-socket connection using a single-layer nickel/phosphorus alloy coating on the contacting members, which provides mechanical protection and sufficient conductivity without the need for a gold layer, combined with a nickel barrier layer to prevent gold diffusion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a multi-layer system with gold coating is used for contacting members, then good contacting properties and corrosion resistance are achieved, but production costs increase and manufacturing complexity increases
Solution Approach 1:
The patent extracts the essential function of the gold layer (corrosion resistance and conductivity) and combines it with the nickel barrier layer's function (preventing gold diffusion). This creates a simplified single-layer nickel/phosphorus alloy coating that maintains the necessary contacting properties while eliminating the need for separate gold plating, thereby reducing production costs and manufacturing complexity.
Solution Approach 2:
The patent uses a nickel/phosphorus alloy coating that combines the corrosion resistance of nickel with the conductivity benefits previously requiring gold. This composite material approach allows a single-layer coating to perform multiple functions (barrier protection, corrosion resistance, and electrical conductivity) that previously required a multi-layer gold and nickel system.
2Reliability
If a multi-layer system with gold coating is used for contacting members, then good contacting properties are achieved, but the number of coating steps and manufacturing complexity increase
Solution Approach 1:
The patent merges the functions of the nickel barrier layer and the gold contact layer into a single integrated nickel/phosphorus alloy coating. This unified coating structure performs both the barrier function (preventing diffusion) and the contact function (providing corrosion resistance and conductivity) simultaneously, eliminating the need for multiple separate coating steps and reducing overall system complexity.
Solution Approach 2:
The nickel/phosphorus alloy coating is designed to perform multiple functions within a single layer: it acts as a barrier layer preventing diffusion, provides corrosion resistance, and ensures adequate electrical conductivity for data and power transmission. This multi-functional coating replaces the traditional multi-layer system where each layer had a specialized function.
3Ease of manufacture
If a single-layer nickel/phosphorus alloy coating is used instead of multi-layer gold coating, then production costs decrease and manufacturing is simplified, but sufficient conductivity and corrosion resistance must be maintained
Solution Approach 1:
The patent changes the chemical composition parameters of the nickel coating by adding phosphorus to create a nickel/phosphorus alloy. This parameter change transforms the coating's properties, enhancing its corrosion resistance and optimizing its electrical conductivity to levels sufficient for high-speed data transmission, while maintaining the simplicity and cost-effectiveness of a single-layer structure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The single-layer nickel/phosphorus alloy coating ensures reliable signal transmission and mechanical protection, reducing production costs and resource inefficiencies while maintaining stable contact transition resistance.
Implementation Method 1
The Ni—P-layer can be applied in several electroplating baths in several operations
Implementation Method 2
the nickel content acts as a barrier layer in gold plating. Without this barrier layer, the gold diffuses into the base material
Data Source
AI summary
A plug-and-socket connection, preferably a data and power plug-and-socket connection, and more particularly preferably an SPE-plug-and-socket connection, comprises at least two plug-and-socket connection components being a mating plug-and-socket connector and a plug-and-socket connector. the components each have at least one contacting member, wherein one of the contacting members electrically contacts the other contacting member in a contacting region by connecting the mating plug-and-socket connector with the plug-and-socket connector. A metal base body of the contacting member is arranged in the contacting region and includes a single-layer or multi-layer nickel/phosphorus alloy. There is also a method for producing a plug-and-socket connector of the plug-and-socket connection.