Solder Joint Aging Test Circuit for Precise Electromigration Evaluation
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Solution Overview
Problem
Existing soldering point aging tests lack convenience, stability, and precision in evaluating the reliability of soldering points in electronic products, particularly due to issues with electromigration, which affect performance over time.
Innovation Solution
A test apparatus and method utilizing a connection circuit with mounting positions, a detection unit, and a control unit to automate the aging and detection process, incorporating a heater for temperature stress, power supply for current stress, and a detection unit for electrical property analysis, ensuring high precision and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If heating is used to accelerate aging of soldering points, then aging test efficiency is improved, but measurement precision and stability deteriorate
Solution Approach 1:
The test system is divided into multiple independent modules: a heating module for temperature stress, a power supply module for current stress, and a detection module for electrical property measurement. Each module operates independently and can be precisely controlled, allowing the system to achieve both accelerated aging through heating and high-precision measurement through the dedicated detection module.
Solution Approach 2:
The detection module continuously monitors the electrical properties of the soldering points during the aging test and provides feedback to the control module. This feedback mechanism allows for real-time adjustment of heating power and current stress to maintain optimal test conditions, ensuring both accelerated aging and measurement precision are achieved simultaneously.
2Device complexity
If manual operation is used for soldering point aging test, then device complexity is reduced, but ease of operation and measurement stability deteriorate
Solution Approach 1:
The test system is designed as an automated self-service platform where the control module automatically manages the heating process, power supply, and detection operations. The system can autonomously execute aging tests, monitor electrical properties, and generate results without requiring manual intervention, thereby simplifying operation while maintaining low complexity through integrated design.
Solution Approach 2:
The test apparatus is designed as a multi-functional integrated system that combines heating, power supply, and detection capabilities in a single platform. This universal design allows the same device to perform multiple functions (accelerated aging, electrical property measurement, reliability evaluation) without requiring separate manual operations for each function, thereby improving ease of operation while managing complexity through consolidation.
3Measurement precision
If automated detection is implemented, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The heating module, power supply module, and detection module are merged into a single integrated test system with centralized control. This consolidation allows the system to achieve high measurement precision through automated detection while managing device complexity by combining multiple functions into one coordinated platform rather than requiring separate independent systems.
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 convenient, stable, and high-precision evaluation of soldering point reliability, simulating long-term aging in a shorter time with automated operation, providing accurate failure time determination and reliability indices.
Implementation Method 1
a heater configured to heat the sample
Implementation Method 2
a power supply configured to supply power to the connection circuit to accelerate aging of the soldering point due to a current generated in the sample
Implementation Method 3
a detection unit configured to perform a detection on an electrical property of the sample
Data Source
AI summary
Disclosed is a test apparatus, including: a connection circuit having a plurality of mounting positions each configured to connect a sample; a detection unit configured to perform a detection on the sample; and a control unit configured to control the detection unit to perform the detection on the sample. Further disclosed is a test method, including: connecting a sample to a mounting position of a test apparatus; and perform a test on the sample with the test apparatus.