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Conductive Epoxy Wire Attach, Encapsulation and Strain Relief on Sliders

IP.com Disclosure Number: IPCOM000108024D
Original Publication Date: 1992-Jan-01
Included in the Prior Art Database: 2005-Mar-22
Document File: 2 page(s) / 61K

Publishing Venue

IBM

Related People

Weirick, JA: AUTHOR

Abstract

A technique for attaching fine electrical wires onto sliders is presented which embodies three processing steps allowing ease of assembly, design flexibility, good electrical conductivity, superior strain relief, and protection from particle shedding. Emphasis is placed upon attaching wires to sliders for magnetic recording, mechanical durability tests, flyheight tests, or other hardfile-related studies.

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Conductive Epoxy Wire Attach, Encapsulation and Strain Relief on Sliders

       A technique for attaching fine electrical wires onto
sliders is presented which embodies three processing steps allowing
ease of assembly, design flexibility, good electrical conductivity,
superior strain relief, and protection from particle shedding.
Emphasis is placed upon attaching wires to sliders for magnetic
recording, mechanical durability tests, flyheight tests, or other
hardfile-related studies.

      The technique embodies three important features or processing
steps:
1.  Positioning the Leads
     The initial process is to locate the end of the wire precisely
in its desired location on the slider body and keep it there during
the conductive epoxy bond step.  This is accomplished by applying a
small amount of fast drying general-purpose adhesive next to but not
directly over the end of the bare lead.
     Fast-drying cyanoacrylates are well suited for this purpose.  A
jeweler's watch oiler or other fine-tipped instrument is very helpful
in collecting the finest drop of adhesive possible.  Also, the
temporary use of a low-debris adhesive tape complements the
positioning and holding of the wire leads during this step.  Low
power microscopes also aid in the application of the epoxies.
2.  Bonding with Conductive Epoxy
      The second step of this technique is the application of an
electrically-conductive epoxy over the bare lead and slider pad
location.  Aga...