A component handler includes an improved test seat having a shape that ensures that an electronic component seated in the test seat is in an appropriate orientation for parametric testing. The test seat has a base surface and first and second opposed seat side surfaces separated by generally increasing distances from a narrower notch end to a wider notch end. There is an opening at the narrower notch end. An electronic component is seated within this test seat such that the first and second side surfaces of the electronic component rest against the first and second seat side surfaces. A side surface side margin on which is formed a wraparound electrode is exposed by an opening at the narrower notch end and a second side surface side margin on which is formed a second wraparound electrode is exposed by an opening at the wider notch end.