Peerapat Suwanphorung

Failure Analysis Engineer

Professional Summary

Computer Engineering graduate with 15+ years in electronics manufacturing (hard disk drive heads), including hands-on failure analysis of reliability-test failures and new-process builds. Traces root cause with electrical debug, SEM and stress-test data (HAST, NaCl), reports clear findings, and organizes technicians and lab priorities to meet turnaround.

Core Competencies

Portfolio Project

Slider Process Validation Dashboard

validate.songvijit.com ↗

Compares a split-lot process change against POR from BQST/SDET results; paired tracking flags units that pass one test stage but fail the next.

Work Experience

Staff Engineer

Western Digital (Thailand) Ltd. · Bang Pa-In, Ayutthaya

Build Support & Workflow Optimization

Nov 2025 – Feb 2026
  • Traced build cycle-time overruns to root causes and agreed fixes with production and IE.

Process Development & Characterization

Jan 2024 – Nov 2025
  • Performed FA on new-process builds with issues, coordinating SEM lab work and summarizing findings.
  • Introduced a weekly lab-priority agreement for shared SEM requests, reducing mid-week priority changes.
  • Contributed pole-tip-recession (PTR) data to a material change that resolved a dimensional defect.
  • Presented experiment findings to engineering leadership to guide next steps.

Process Validation

Jan 2022 – Dec 2023
  • Supported second-level failure analysis (HAST, NaCl) to verify process integrity.
  • Interpreted BQST/SDET electrical results and reviewed HAST (humidity) and NaCl (salt-corrosion) reports.
  • Ran qualification builds and tests on roughly 10 new-process projects, feeding results to process owners.

Senior Engineer / Supervisor

Western Digital (Thailand) Ltd. · Bang Pa-In, Ayutthaya

Cleanliness & Electrostatic Control

May 2019 – Dec 2021
  • Monitored contamination in two cleanroom buildings, directing corrective action through three technician teams.
  • Worked with industrial engineering on lasting tool fixes (door openings, robot paths, monitoring-probe locations).
  • Followed ESD control procedures set by the team's ESD specialist to protect sensitive head components.
  • Supervised 20+ personnel: shift planning, leave and overtime approval, Kaizen activities.

Test Engineering

Jun 2013 – Apr 2019
  • Planned DOE test execution on GUZIK head testers, converting testers per product and directing technician setup.
  • Coordinated with equipment teams to keep testers calibrated and available.

Advanced System Failure Analysis

Oct 2010 – May 2013
  • Performed FA on drives that failed reliability tests (oscilloscope capture, drive bring-up, error duplication).
  • Assessed reliability data to identify root causes; later used automated FA tooling that shortened analysis time.
  • Developed corrective actions for recurring failure modes with R&D, quality and manufacturing.

Earlier Career

Education