High-speed testing and sorting of ultra-compact, high-cap and general multilayer ceramic capacitors.

High Capacitance MLCC Tester

Allegro performs high-throughput production electrical testing of multi-layer ceramic capacitors (MLCC) and is designed to meet challenges faced by MLCC manufacturers. Allegro allows customers to verify quality and ensure accurate specifications for MLCCs used in a variety of applications, in the manufacture of high-quality printed circuit boards used in nearly every type of electronic device.

Although Allegro can process up to 20,000 chips per minute, ESI’s advanced rotary handling technology minimizes the potential for damage to the chips as the result of testing, thus increasing yield.

Allegro has the flexibility to test MLCCs from <1pF to 100µF, and provides process flexibility and maximum utilization to lower testing costs. Multiple tests are simultaneously performed on chips as small as 01005 (M0402 metric) on using ESI’s patented rotary handler technology for continuous automation and reliable productivity.


High-volume testing without sacrificing yield.

  • Mobile Devices
  • IOT Devices
  • Personal Computers
  • MLCC Testing
  • MLCCs


  • ESI patented roller contacts
  • Pulse-actuated contacts
  • Supports up to 8 active IR stations
  • Software selectable voltage polarity for flexible IR testing process