Browse Prior Art Database

Method for Slider Attachment and Head Termination to a Suspension in a Disk File

IP.com Disclosure Number: IPCOM000103935D
Original Publication Date: 1993-Feb-01
Included in the Prior Art Database: 2005-Mar-18
Document File: 2 page(s) / 51K

Publishing Venue

IBM

Related People

Puttanaik, S: AUTHOR

Abstract

Disclosed is a process which enables simultaneous attachment of the slider to the suspension and electrical termination to the read/write elements by a single process.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 54% of the total text.

Method for Slider Attachment and Head Termination to a Suspension in a Disk File

      Disclosed is a process which enables simultaneous attachment of
the slider to the suspension and electrical termination to the
read/write elements by a single process.

      Assembly of thin film magnetic read/write heads (sliders) to
suspensions in the currently practiced process consists of at least
three distinct process steps:

1.  The slider is first mechanically attached to the suspension by
    application of epoxy and subsequent heat curing.

2.  A twisted pair of wires is then ultrasonically bonded to the
    thick gold pads on the edge of the slider to carry the read/
    write information into and out of the thin film head.

3.  Epoxy is applied to the ultrasonic wire bonded region, then is
    heat cured to provide strain relief and protection.

      These process steps are inherently difficult to automate,
require extensive inspection and rework, and are, therefore, costly.

      The process proposed accomplishes slider attachment and head
termination in one step.  The slider is attached by epoxy and the
termination is performed by solder reflow, the epoxy cure and solder
reflow occurring simultaneously.  This process is amenable to
automation and batch fabrication, and is therefore likely to improve
reliability while reducing cost.

      The suspension is a low-profile integrated NAPA suspension,
wherein the "twisted pairs" have been rep...