Inductive Overlap Current Automatic Test System Model 1871B

In response to the 3C, automotive and other green energy market for small molded power inductors (Molding Power Choke), the expansion of the amount of use, and a high degree of quality requirements, especially automotive products, electronic components, functionality and specifications of the test requirements more rigorous and complete. Taking inductors as an example, there are already first tier molding inductor factories that include inductor overlap current test as a full production inspection item, Chroma 1871B is specially designed for this purpose in order to provide fast and automatic test and accurate product quality monitoring.

After an inductor is tested with overlapping currents, the B-H characteristics will not return to zero for a short period of time due to residual magnetism, which in turn affects the Ls/Q values of the inductors for a short period of time. If the overlap current test is added to the inductor package tester and consistently performed, it will result in an abnormal Ls/Q value at the end of the test, which means that some inductors are not suitable for the overlap current test and Ls/Q value test to be designed in the same inductor automatic package tester, which leads to the need for a separate machine for pure overlap current specification testing.

The production speed and integrity of inductance testing is the most important focus for customers. In the past, the industry either used manual operation with clamps/fixtures for testing, or used old and slow equipment, which is not enough to meet the increasing demand from end-customers. With Chroma's high-precision test instruments, it can be used for additional pre-screening only for products with overlap current test requirements, and the choice of flexible test stations can meet specific testing requirements, avoiding investment in equipment with low utilization rate when customer demand has not yet been released.

Inductance process quality and data traceability has become an indispensable function of industrial equipment, Chroma 1871B overlap current automatic test system with professional data collection software, can be in the production process of real-time monitoring of the test status and the collection and storage of each single product test data, and through the software statistical functions to assist R & D and quality assurance units to do product analysis or quality control, in order to achieve overall process control. process control.

The Chroma 1871B is designed to cover the size test of various molding power inductors available in the market. If the sizes are similar, they can be shared by replacing only a few parts, which brings a more convenient mode of operation to the manufacturing department.