Patent attributes
Embodiments described herein generally relate to connecting Electronic Lapping Guides (ELG) to a lapping controller to reduce resistance from current crowding while reducing connections to the ELG. A device and a system can include a wafer with peripheral grounding vias having a radius of at least 10 μm, a plurality of sliders with a magnetoresistive (MR) elements; a plurality of ELG electrically coupled to the lapping controller through a combination of the wafer and grounding pads and a bonding pad electrically coupled to the ELG. The ELG or the bonding pad can be positioned in the kerf or the device region of a row. If the ELG and the bonding pad are positioned in separate regions, a noble metal should be used to connect. Further, the number of grounding pads can be reduced by using grounding vias at specific intervals and specific sizes.
