Pad Series Grounding Options

RTH or STH - Contacts in Housing

The standard grounding for most Johnstech contactors utilize contacts, either S-shaped (STH) or ROL™ shaped (RTH) test contacts configured in the Torlon housing directly beneath the center of the device package ground pad. Johnstech self-cleaning wipe technology provides improved MTBA (mean time between assists) and lower ground inductance.

Insert Technologies

In addition to ground contacts in the contactor housing, Johnstech offers ground inserts that can be removed from the contactor housing itself and interchanged as application requirements change. These ground inserts are used for both grounding and thermal requirements.

RCI or SCI - Contacts in Copper Insert

This insert configuration utilizes multiple contacts in a metal insert to meet the low ground inductance and thermal requirements of the most demanding applications. Available with either S contacts (SCI) or with ROL™ contacts (RCI).

CI - Copper Insert

This insert can be used for optimum grounding and thermal requirements during characterization testing where a device might need to be powered up for an extended period of time to determine steady state performance.

EI Insert - Eco™-1 Insert for 3x3 QFN Pad Packages

The EI Insert is available in 3x3 mm package sizes for Pad ROL™200 Series and Pad Series 2mm test contactors. The high-strength ECO™-1 material provides long-life. The elastomer-based design provides excellent retention in the housing and preload bias to the load board for robust performance. 

Owners Manual

Assembly Video

EI Insert -  Eco™-1 Insert for 4x4 QFN Pad Packages

The EI Insert is available in 4x4 mm package sizes for Pad ROL™200 Series and Pad Series 2mm test contactors. The high-strength ECO™-1 material provides long-life. The elastomer-based design provides excellent retention in the housing and preload bias to the load board for robust performance. 

Owners Manual

Assembly Video

Other Grounding Options

Other grounding options are available upon request.
Contact your Johnstech representative.