Test Socket Spring Arm Press-Fit Detachment
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Solution Overview
Problem
Existing sockets soldered to printed circuit boards are difficult to detach, limiting their reusability and flexibility in testing semiconductor packages.
Innovation Solution
A socket design featuring a main body with contact passageways and spring arms that press-fit against the printed circuit board, allowing for easy detachment by using a spring arm to establish electrical connection instead of soldering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the foot of the contact is soldered onto the printed circuit board to achieve electrical connection, then the electrical connection is reliable and stable, but the socket cannot easily detach from the printed circuit board
Solution Approach 1:
The invention extracts the soldering process from the connection method and replaces it with a press-fit mechanism using spring arms. The spring arms apply mechanical pressure to create electrical contact without permanent bonding, allowing the socket to be detached easily while maintaining reliable electrical connection during use.
Solution Approach 2:
The invention replaces the thermal-chemical soldering process with a purely mechanical press-fit system. The spring arms utilize elastic deformation and mechanical pressure to establish and maintain electrical contact, eliminating the need for soldering while ensuring stable connection and easy detachment.
2Adaptability or versatility
If the socket is designed for easy detachment from the printed circuit board, then the reusability and flexibility are improved, but the electrical connection stability may be compromised
Solution Approach 1:
The invention introduces dynamic elements through spring arms that can flex and adapt to variations in the printed circuit board surface and contact points. The spring mechanism provides continuous pressure to maintain stable electrical connection while allowing for easy detachment when needed, thus achieving both reliability and adaptability.
Solution Approach 2:
The invention changes the connection parameter from permanent (soldering) to temporary press-fit. By controlling the spring pressure and contact geometry, the system achieves stable electrical connection during testing while enabling easy removal and reuse of the socket on different boards or packages.
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
Enables the socket to be easily detached from the printed circuit board while maintaining electrical connectivity, enhancing reusability and flexibility in semiconductor package testing.
Implementation Method 1
a spring arm bent from a bottom edge of the base portion... is bent downwardly at a free end thereof to form a tail for pressing against the printed circuit board
Data Source
AI summary
A socket adapted for electrically connecting a semiconductor package to a printed circuit board, includes a main body defining a number of contact passageways and a plurality of contacts received in the contact passageways of the main body. Each contact has a base portion, a first contacting portion and a second contacting portion upwardly extending from the base portion, and a spring arm bent from a bottom edge of the base portion. The spring arm extends substantially in a horizontal direction and is bent downwardly at a free end thereof to form a tail. The spring arm can deform to provide an elastic force for the tail to press against the printed circuit board.