Invention Grant
- Patent Title: Electrically conductive kelvin contacts for microcircuit tester
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Application No.: US15144309Application Date: 2016-05-02
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Publication No.: US10247755B2Publication Date: 2019-04-02
- Inventor: Joel N. Erdman , Jeffrey C. Sherry , Gary W. Michalko
- Applicant: Johnstech International Corporation
- Applicant Address: US MN Minneapolis
- Assignee: Johnstech International Corporation
- Current Assignee: Johnstech International Corporation
- Current Assignee Address: US MN Minneapolis
- Agency: Altera Law Group, LLC
- Main IPC: G01R1/04
- IPC: G01R1/04 ; G01R1/067

Abstract:
Terminals (2, 502) of a device under test (DUT) are connected to corresponding contact pads or leads by a series of electrically conductive contacts. Each terminal testing connects with both a “force” contact and a “sense” contact. In one embodiment, the sense contact (770) partially or completely laterally surrounds the force contact (700). In order to increase the contact surface, the force contact, in a spring pin (700) configuration contacts the device under test terminal at that portion of the lead which is curved or angled, rather than orthogonal to the pin.
Public/Granted literature
- US20160320429A1 Electrically Conductive Kelvin Contacts For Microcircuit Tester Public/Granted day:2016-11-03
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