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Mechanical Engineer Manufacturing

Milpitas, California, 95035, United States
October 11, 2016

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Linh K. Nguyen

Milpitas, CA *****

Cell (408)***-****

Summary: over fifteen years of experience in manufacturing and engineering with emphasis on tooling design, precision component design, New Product Introductions (NPI), outsourcing, and process and equipment qualification. Achievements include: successful new product introductions to manufacturing hand-off of semiconductor inspection equipment; prepared documentation and procedures for successful ISO 9001 registration of Excel Precision Corporation in 2008; managed the qualification of capital equipment for top grid solar cell conductive ink printing and process development.


2013-present, Process Engineer, NovaTorque, Inc., Fremont, CA

• Developed motor manufacturing processes for unique, best in class efficiency electric motors from magnet gluing in the rotor, laser cutting of silicon steel laminations, and BMC transfer molding of the conical shaped stator.

• Developed fiber laser cutting process to produce electrical steel lamination stacks for conical shaped motor stators.

• Developed the process to convert the laser cutting machine for different size laminations cutting.

• Set-up new manufacturing sites in the U.S. and overseas through process, tooling, and equipment qualifications and well as training technicians, operators and assemblers.

• Developed the process for transfer molding of BMC molding compound for conical shaped stators.

• Successful implementation of DFMEA, PFMEA, 8D, process capability studies and other analytical tools. Wrote ECO's to structure new BOM's.

• Designed tooling for magnet size GO/NO-GO gauges; designed fixtures for rotor gluing and merging of major sub-assemblies.

• Resolve motor manufacturing issues involving vibration, balancing, Ke, and efficiency tests.

• Wrote and edited work instructions on magnet gluing, rotor assembly, steel lamination laser cutting, BMC mold compound transfer molding, bearing on shaft pressing and hot dropping, rotor on shaft pressing, rotor balancing, vibration testing, and motor Ke testing.

2012-2013, Mechanical Engineer, Bloom Energy (contracting through Aerotek), Sunnyvale, CA

• Procure tooling, workstations, and test equipment for a new manufacturing location in Delaware.

• Developed the manufacturing floor layout to optimize process flows and future Kaizen and value stream mapping opportunities.

• Interact with cross functional groups to provide building construction contractors information to proceed with electrical and other utility requirements for the new Delaware manufacturing plant.

• Track Engineering Change Notices (ECN) and deviations so that the new team in Delaware can implement.

2012, Mechanical Engineer, (contracting through PEAK Technical), XEI Scientific, Redwood City, CA

• Designed gas manifolds and vacuum chamber support frames

2010-2012, Vacuum Deposition Engineer, AQT Solar, Sunnyvale, CA

• Designed automated solar cell I-V testing on PV Measurements IV5 to reduce processing time by 10X using a motorized XY stage to move the substrate and a solenoid for vertical probe movement, thereby improving measurement precision, repeatability and speed.

• Designed automation for chemical bath deposition (CBD) of cadmium sulfide (CdS) buffer layer. Processed more than 1000 batches of CdS on CIGS and CZTS solar cells. Trained technicians on the operation and monitoring.

• Managed the qualification of a new 1200 unit per hour capacity solar cell top grid conductive ink printer (DEK PV1200). Developed the ink curing temperature profile. Wrote the procedure and trained technicians on the operation, maintenance and monitoring of the tool and process. Drafted the top grid drawing for full and small cells.

• Developed laser ablation process for P3 scribe of CIGS and CZTS solar cells using OpTek Systems laser.

• Designed solar cell holder, positioner, and electrical contacts for light-beam-induced-current (LBIC) tool.

• Operated AJA high vacuum sputtering tool to sputter CIGS and CZTS R&D solar cells and TCO (iZO, AZO).

• Designed solar cell annealing enclosures. Designed small tools, fixtures and templates for solar cell processing.

2007-2010, Mechanical Engineer, Excel Precision Corporation, Santa Clara, CA

• Designed mechanical components for Zeeman laser based precision measuring systems with nanometer resolution.

• Prepared procedures, forms, work instructions, and other documentation for successful ISO 9001 registration.

• Audited documents and procedures for ISO 9001 compliance.

• Implemented continuous process improvement.

2003-2007, Engineering Technician, Seagate Technology, Fremont, CA

• Process hard disk drive (HDD) media with high vacuum sputtering tools, including Intevac 200Lean.

1997- 2002, Manufacturing Design Engineer, KLA-Tencor, San Jose, CA

• Managed manufacturing test processes at suppliers and contract manufacturers to maintain accurate, repeatable process instructions and testing criteria.

• Established qualification processes for outsourcing frame assembly of about 2000 parts, which includes the main steel frame, power supply modules, cable harnessing, air blower, and pneumatic isolators.

• Ensured accuracy of drawings, specifications, BOM’s, and process instructions and maintained them through Engineering Change Orders (ECO). Implemented ECO’s at suppliers and contract manufacturers.

• Transferred KLA-Tencor’s new 300 mm wafer inspection machine from engineering, through pilot manufacturing, and to outsourcing to a contract manufacturer as part of a New Product Introduction (NPI) team.

• Developed procedures, Sequence of Events (SOE), and Operations Methods Sheets through Pro/Process to assemble a 300mm wafer inspection station optics plate. Prepared BOMs for ECO release. Evaluate areas for process improvement and followed through with detailed plan for action.

1993- 1997, Mechanical Engineer, Lightwave Electronics Corporation (now JDS Uniphase), Mountain View, CA

• Designed mechanical components for diode pumped lasers including: optical mounts, laser enclosures, cold plates for laser diodes and side pumped laser crystal holder (US Patent 5,867,324 Feb. 2, 1999).

• Designed precision optical alignment tooling; fixtures for soldering and gluing; tools for laser to fiber alignment.

• Initiated, prepared and implemented manufacturing ECO’s. Developed procedures and BOM’s.

• Phased in new products from R&D to Manufacturing. Built prototype solid state diode pumped lasers.

• Trained laser technicians and electro-mechanical assemblers for assembly and alignment of lasers.

Education: 1993, BS, Mechanical Engineering San Jose State University, San Jose, CA

Technical Skills:

• Strong knowledge of SolidWorks and AutoCAD. Familiarity with Pro/Engineer, Pro/Process.

• Agile, Oracle, and Arena PLM knowledge.

• Minitab

• Operation of various lab equipment: Perkin-Elmer spectrometer, XRF, XRD, SEM, LBIC, Zeta 200 surface profiler microscope.

• Engineer-In-Training Certified #XE090146.

References: Available upon request.

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