Step-like Connector Support for Soldering Yield
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional connectors experience reduced yield rates and stability issues due to the wicking effect of solder paste during reflow soldering, leading to potential short circuits and insufficient signal transmission.
Innovation Solution
The connector design incorporates support portions resembling steps, with protruded and recessed parts forming wicking spaces, preventing solder paste from being pushed onto the isolation base and ensuring secure soldering by matching positioning terminals with grooves, allowing for effective soldering and improved assembly precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional support portions are used during reflow soldering, then the connector can be firmly mounted on the circuit board, but the solder paste will be pushed to the support portion causing parts lift and reducing soldering yield rate
Solution Approach 1:
The support portion is segmented into a protruded part and a recessed part, creating a step-like structure. This segmentation prevents the solder paste from being pushed onto the isolation base by creating a physical barrier, thus resolving the contradiction between mounting firmness and soldering yield rate.
Solution Approach 2:
The recessed part acts as an intermediary space (wicking space) between the protruded part and the isolation base. This intermediary structure captures the solder paste that would otherwise be pushed onto the support portion, preventing parts lift and improving soldering yield rate while maintaining mounting firmness.
2Device complexity
If the connector structure is simplified, then the manufacturing cost is reduced, but the wicking effect causes insufficient stability of signal transmission
Solution Approach 1:
The support portion is divided into protruded and recessed parts, creating a simple yet effective step-like structure. This segmentation provides a wicking space that prevents solder paste from affecting signal transmission stability, achieving reliability improvement without significant structural complexity.
3Object-affected harmful factors
If the support portion is made higher to prevent solder paste wicking, then the wicking effect is reduced, but the positioning precision of the connector is affected
Solution Approach 1:
The support portion is segmented into protruded and recessed parts with controlled dimensions. The protruded part provides sufficient height to prevent solder paste wicking, while the recessed part maintains positioning precision by providing a defined space that accommodates the solder paste without affecting the connector's positioning on the circuit board.
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
This design enhances the yield rate and stability of the connector by preventing solder paste wicking, ensuring robust electrical connections and efficient reflow soldering, while also providing heat convection spaces for improved soldering efficiency.
Implementation Method 1
a part of the solder paste will be risen along the positioning pieces 13, and it results in the wicking effect
Implementation Method 2
providing heat convection spaces for improved soldering efficiency
Data Source
AI summary
The present invention is to provide a connector having support portions like steps for improving yield rate of soldering, which includes an isolation base provided therein with signal terminals each having two ends respectively exposed out of front and back side surfaces of the isolation base. Support portions each is formed by a protruded part and a recessed part like steps on the back side surface. An end of a positioning terminal can be inserted into a positioning groove on the recessed part and then be exposed out of the back side surface with a length larger than the length of the protruded part that is approximately equal to the length of the signal terminal extended out the back side surface, whereby the end of the positioning terminal can be inserted into a positioning hole on a circuit board when the back side surface is positioned on the circuit board.