Reduction of defects in the trim and form section at the end of the line process of on Semiconductor Philippines, Inc., Carmona, Cavite, Philippines

Date

6-2015

Degree

Bachelor of Science in Industrial Engineering

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Micah A. Ramirez

Restrictions

Restricted: Not available to the general public. Access is available only after consultation with author/thesis adviser and only to those bound by the confidentiality agreement.

Abstract

On Semiconductor Philippines, Inc. (OSPI) is located at Governor's Drive Carmona, Cavite. It is one of the manufacturing segments of ON Semiconductor here in the Philippines (the other was located in Tarlac), a major manufacturer of semiconductors. For the year 2013 until the third quarter of 2014, the average defects was 0.0546%. The allowance that was set by the company was only 0.035. The weekly loss due to the gap between the actual and the allowance amounted to Php12,849.90. The greatest contributor of the number of defects was the Trim ad Form Section of the End of the Line Process. The study was made for the company to attain its target reject allowance by reducing the number of defects in the area. OSPI's historical data from the year 2013 until the 43 week of 2014 were reviewed. Based on the records, the company on the average was not able to achieve its target yield of 99.97%. Using Pareto charts, it was found that the major causes of defects are attributed to falling units, damage or crumpled strips, missing leads, and damage leads. These are subjected to Fishbone analysis and to why-why analysis subsequently to find the root cause/s for these events. CNX Analysis was used to classify these rot causes. Alternative solutions for the root causes were subjected to factor rating method to determine the most-cost effective solution for the problems identified. These alternative solutions were the acquisitions of a top and bottom cleaning device, presence of signage or setting guides in the workplace, and scheduling and providence of refresher courses and incentives or sanctions. The total cost of all the recommendations will amount to PhP122,893.08 while the total saving is equivalent to PhP367,144.90.The annual rejected units will be reduced from 0.0546% to 0.0289%. Thus, the average annual defects limit of 0.03% will be attained.

Language

English

Location

UPLB College of Engineering and Agro-Industrial Technology (CEAT)

Call Number

LG 993 2015 E66 /A48

Document Type

Thesis

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