In-Circuit Testing
Proven, Reliable, Standardized and Mature ICT Technology by E-Metric Technology
In-circuit testing (ICT) is a systematic method for verifying the functionality and quality of electronic circuits during and after manufacturing, by testing the individual components and electrical connections of the circuit in its assembled state.
E-Metric Technology provides the key ICT technology to build the industry's automated testing equipment (ATE) tailored for semiconductor ICs and printed circuit boards (PCBs). Proven in the industry for over 20 years, our well-established and dependable ICT solutions can reliably detect electrical faults and ensure product functionality.
Leveraging mature and standardized technologies such as high-speed boundary scan and flying probe systems, our technology delivers unparalleled accuracy and speed in identifying issues at the component level.
Key Aspects of In-Circuit Testing
In-circuit testing is a crucial Quality Assurance (QA) composition of the electronics manufacturing process, helping to ensure that each circuit is reliable and functions as intended. ICT comprises of 2 major aspects:
- Component Verification
ICT checks if each component (resistors, capacitors, inductors, transistors, ICs) is properly placed and functioning. It can detect issues such as incorrect values, damaged components, or defects.
- Connection Testing
ICT ensures all the electrical connections (traces, vias, interconnects, etc.) are properly made. It identifies problems such as open circuits, short circuits, or improper connections.
Testing Techniques
E-Metric Technology's mature ICT solutions combine a standard system of testing methods into build the ATE product:
| Boundary Scan (JTAG) | Uses special test modes built into ICs to test digital interconnections. |
| Functional Testing | Checks if components are indeed operating within the specifications as designed. |
| Continuity Testing | Verifies that electrical connections are defect-free and complete. |
| In-Circuit Analysis | Measures voltage, current, or resistance at pre-defined test points in the circuit. |
Test Fixtures
ICT requires physical fixtures and probes to make electrical contact with dedicated Test Points (TP) on the circuits. E-Metric Technology has accumulated 2 decades of expert knowledge in designing specialty physical fixtures and test probes required for ICT.
Automation
In today's industry, most ICT set-ups are highly automated, using robots or machines to place the test probes, perform the measurements, and capture the data. This greatly increase testing throughput and accuracy, and is required for large volume manufacturing. E-Metric Technology is a leading technology provider in the area of automated In-Circuit Testing.
Benefits of In-Circuit Testing
ICT helps in the early detection of manufacturing defects, reduces the need for manual inspection, and ensures that boards meet quality standards before they are shipped or integrated into larger systems.
With a commitment to innovation and quality, E-Metric Technology's ICT solutions empower semiconductor and electronics manufacturers to streamline their testing processes, reduce costs, and achieve superior product reliability, all while staying ahead in the fast-paced market.
Application Scenarios
In-Circuit Testing are adopted in both Printed Circuit Boards (PCB) manufacturing and Integrated Circuits (IC) manufacturing.
Click to learn more and compare how E-Metric Technology provides ICT solutions for these 2 different application scenarios.