Engineer Maintenance

Dear Sir / Madam:

My name is Stephen Lam. I have been an equipment engineer with a background

in electronics working in the semiconductor manufacturing industry for 16

years. I had also worked as a senior technician for 4 years at National

Semiconductor prior to joining Vishay in 1992,

During my semiconductor career, I have worked in various capacities,

performing hands-on troubleshooting on highly complex semiconductor

manufacturing equipment and managing daily administrative tasks, as well as

meetings with production staff and vendors. I was also a member of the QC

and safety cross function check team for 3 years working with EHS and

facility staff.

I have strong multi-discipline knowledge in electro-mechanical, pneumatic,

vacuum, and environmental

control systems. I am fluent with three languages with strong

communication and written skills.

I am looking forward to meeting new challenges and career opportunity to

further demonstrate my skills.

Thank you in advance for taking the time to review my resume. Attached is

a summary of my experience

and skill sets.

Sincerely,

Stephen Lam

Stephen Lam

Address: 3901 Lick Mill BLVD #331

Santa Clara, Ca 95054

Home Phone: 408-***-****

Mobile phone: 559-***-****

Email: *******@***.***

Summary of Qualifications:

. Worked on production line for 8 years, troubleshooting and performing

maintenance

and repairs on semiconductor equipments

. Managed and trained a crew of 5 for the photo mask manufacturing

department.

. Strong working knowledge on EH& S and OSHA

. ISO 9000 & 14000 trained

Technical Skill and hands-on experience:

.

. Pneumatics, Scroll pumps, Sump pumps, AC/ DC Motor controls, Vacuum

equipment

set up, install and test, High pressure UV lamp & ignition power

supply, Temperature controls,

RF & plasma, Fluid delivery control Solenoid, Pneumatic valves,

Flow regulator, Class 1 and

2 lasers app, Optic app, Photo multiplier tube (PMT), Environmental

control.

. General machine shop tools - Drill press, Band saw, stainless tube

cutter, impact hammer

. Poly welder

Electronic Test Instruments:

. O-scope, DVM, Signal generator, Signal tracer, RF power supply,

Variable DC power supply,

LVDT, Vacuum ion gauge, Helium Leak detector, Anemometer, IR

thermometer, UV Intensity

Meter, Pressure transducer, Temperature / r/h meter, Pulse counter

& digital counter Date /

Chart recorder, ESD equipment, Velocity meter, Interferometer,

Thermocouple and associated

meters (K, J, R, S type)

. Database: SAP, PROMISE

. Software/Applications: Window Word, Excel, Adobe, Outlook, SAP,

PROMISE

. Operation Systems: Window

Electronic knowledge / principles:

. Analog circuits: DC power supply design, full Bridge and half bridge

rectifier, Op amp, all Transistor configurations, Darlington pairs,

amplifier, RC constant, LC low pass and high pass filter, SCR firing

circuit using "PUT" and capacitor, MOSFET, IR Opto-sensor, Servo motor

control, Voltage controlled oscillator (VCO), Variable resistor,

Inductor, RC oscillator, R2R network, voltage divider, saw tooth wave

generator, RF generator, high voltage multiplier, capacitor as spike

shunting or DC blocking.

. Digital circuits:

. Clock generator, data latch, And / Or logic, magnitude comparator,

clock divider,

. Multiplexer, JK Flip flops, SR latch flip flop, decoder, inverter,

DAC, E-prom, Stepper motor driver circuit, data register and counter,

CPU, buffer.

Education/Trainings/Certification:

. A.S. degree in Electronic from Heald Institute of Technology -1983

. Certification: National Career Readiness Certificate -Issued by De

Anza College 2009

. Training: ISO 9000 ISO 14000 at Vishay

Achievements at Vishay:

. I had designed, fabricated, tested and installed a chemical waste

removal system for Vishay

in 1995 based on the positive pressure conversion to vacuum

principle. I took it upon myself to

resolve the routine waste spillage due to equipment malfunctions.

This unique design did not

require the use of any moving parts or a mechanical pump. As a

result, it was very reliable and

did not require constant repair and maintenance. As a result,

many hundreds of evacuation

hours were saved which translates into profits for the company.

This system is still in use today.

. Problem solving skills and ability to methodically dissect and isolate

problem to root cause

. In 2005, I was working with vendors and facility engineer in designing

an automated masks

storage system to increase the archiving capacity.

Career History

1992 -2008 Vishay 2201 Laurelwood Rd. Santa Clara, 95054

. Working as liaison to facility department to insure stable

environmental operation in mask

production area(cooling, heating, CDA,/ N2 delivery, Exhaust etc).

As a result, Critical Dimension

and uniformity of the process improved as the relative humidity

stabilized.

. Liaison to EH &S department, reporting and correcting chemical and

unsafe violations

. Review existing specs and update as required

. Write training manuals, PM procedures and technical analysis

. Member of Continuous Improvement Team, familiar with SPC

. Project management - equipment upgrades, removal and install

. Vendor contacts - sourcing, bidding, service, equipment problem

brainstorm

. Set up preventive maintenance and execute pm schedules

. Pm consumable inventory and uptime management

. Designed, modified, upgraded older tools

. From 1992 -2000, I was hired as the equipment engineer for the photo-

lithography area for

dayshift. My main role at the start was to evaluate the low-

performance issue on the production

tools and find the root cause(s). I devised a monitor preventive

maintenance plan which I had

personally carried out over a period of 3 months. The result was

to be used as a control

experiment to compare to the other PM's performed by other

technicians using the existing

procedures. At the end of the experiment, I was able to raise the

equipment uptime on the

controlled equipment from 70% to 90%. With this finding, I

proposed to the management to

implement the new PM regiment I had designed. It was concluded

that the old PM spec was

introducing variance to the stability of the equipment.

. Attend the morning pass-down meeting to insure clear information was

communicated from the previous shift, and verified all the scheduled

maintenance and PM work performed were properly documented and entered

to the database.

. Equipment I had worked on during this

period: Canon 501 Aligner, Canon G-line steppers, Ultratech 1000

stepper, DNS cluster tools, SVG

8800,

. Revised the old maintenance spec and reformatted the checklist to

continuously improve the equipment efficiency.

. Interacted with process engineer to brainstorm problems that sometimes

crossed between equipment and processes.

. In 1995, I became a member of the "Continuous Improvement Team" which

was a joint effort between production engineering and equipment

engineering designed to enhance efficiency and throughput, as well as

lowering the costs.

. In year 2000, due to the success with the photo group, I was

reassigned to the photomask manufacturing department which was having

problems with scraps and reworks. I began learning the process by

working with the operators on the steps and process flow over a 2

month period. I presented the finding to my manager after 3 months

with my proposed plan. I rewrote the maintenance spec and work with

process engineer to revise the operating spec.

. In 2003, the mask production line had doubled the output as the root

causes were fixed. The entire mask group received an achievement

award. My other responsibilities with this assignment was to make sure

the environmental control was operating to the OEM equipment spec as

the humidity shift could cause variance in critical dimensions. I was

also a liaison to the Plant Facility Department to insure correct temp

and humidity were delivered to the process area.

. Upgrade and sustain obsolete equipment to insure non-stop production

flow. I had trained a team of 5 technicians in 2006 with a revamped

spec to carry out the PM tasks on the off shift. I was taking care of

the maintenance on dayshift.

. My other duties were vendor contacts, spare parts and consumables,

meeting and routine administrative.

1987-1992

National Semiconductor - 955 Kifer Road, Sunnyvale Ca. 94086

. As a senior photo technician, my main responsibility was to carry out

the daily set up/ PM tasks on the steppers, aligners and coating and

developing tracks. In addition, I was also assisting engineer on

equipment documentation, and improving equipment performance.

. In 1990, in an effort for promotion consideration, I had began taking

engineering responsibilities by

starting training new technicians on troubleshooting techniques and

theory of equipment operation. I also was being cross-trained in thin-

film and dry etch equipment

. Equipment with high expertise: SVG 8800, Ultratech 990/ 1000 stepper,

Canon 501 contact aligners, and SSI coater and developer tracks.

. Secondary Equipment Type: Thermco 9000 Diffusion Furnace.

References

Felix Castro - Maintenance Department Manager, Siliconix

Office: 408-***-****

Bob Hetrick - Business Associate / Proprietor

Spectra Light Laser Services, 408 Chateau La Salle Dr., San Jose,

CA 95111.

408-***-****

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