Electrical Engineering in the Semiconductor Equipment Industry A Look at a Typical Job Description of an Equipment Electrical Engineer Recent Job Description….

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Presentation transcript:

Electrical Engineering in the Semiconductor Equipment Industry A Look at a Typical Job Description of an Equipment Electrical Engineer Recent Job Description…. Recent Job Description…. Bob Garbarino 19-NOV-2003

Review Customer Specifications and Generate Design Concepts b Each customer has their own internal specifications b Requirements often difficult to interpret Sometimes visit customers or conference callsSometimes visit customers or conference calls b Concepts communicated by written document, block diagram, schematic, theory of operation b Cost and labor estimates

Design to SEMI Specifications What are These? b Created by members of SEMI committees b Goal: create standardization in semiconductor industry b EEs mostly deal with SEMI S2--Safety NFPA--Fire RiskNFPA--Fire Risk Hazard AnalysisHazard Analysis InterlocksInterlocks b SEMI F47—Voltage sag b CE Low Voltage DirectiveLow Voltage Directive EMC DirectiveEMC Directive

Specify Components b Most parts on system are third-party supplied b Search catalogs, existing standard vendor parts in database b Parts are put into an assembly b Check list for selecting a part Track record of reliabilityTrack record of reliability CostCost UL Listed/RecognizedUL Listed/Recognized Standard partStandard part Meets electrical requirement for applicationMeets electrical requirement for application

Examples of Common Electrical Components b Relays, Contactors b Circuit breakers b Transformers b Wire, cable, connectors b Controllers Temperature, flow, pressure, Digital/Analog I/OTemperature, flow, pressure, Digital/Analog I/O b Transducers, thermocouples b Safety interlock controllers (PLCs) b Signal towers b Uninterruptible power supplies b Motors

Document Designs b Why? Life is not all fun!Life is not all fun! The system must be manufactured by othersThe system must be manufactured by others Service/troubleshootingService/troubleshooting b AutoCad or OrCad Schematics b Bills of Materials b Assembly Drawings b Product Manuals

Work Effectively With Others b Sounds trivial, but this it is critical to get your job done b It also helps when the layoffs come b Need to interface with: Purchasing, planningPurchasing, planning ManufacturingManufacturing Final testFinal test Fellow engineersFellow engineers Your bossYour boss

Skills to Enhance Effectiveness b b AutoCAD, OrCAD b b Analog and digital design experience and knowledge of, MS Office b b Oracle data base software skills for creation of BOMs b b Ability to comprehend and execute to verbal and/or written instructions b b BS degree required and minimum of 3 years electrical design experience

Some Examples of EE Designs b Cables and wiring harnesses--lots of them! b Power distribution panels b Electronics enclosures Temperature, flow, pressure controlTemperature, flow, pressure control b Robotics control assemblies b Light curtains b Operator interface b Need to have good overall system understanding to merge this all together and make it work!

Hardware Example b Programmable Logic Controller Industrial I/O ControllerIndustrial I/O Controller ModularModular ComputerizedComputerized b Pushbutton Input b Thermocouple Input b Analog Output b Valve Control Board-Outputs b Terminal Block

PLC Program Operation b PLC Program reads the TC temperature in Channel 1. Converts the signal to display the Temperature in  F (degrees Fahrenheit) on Mod 4 A1-A8. Where A5-A8 displays the 1’s value in binary, and A1-A4 displays the 10’s value in binary. (e.g = 72  F). b PLC Program reads the Reset Switch on Mod 5 A1. When true, the program will close the first SPDT relay on Mod 6 A1. This in-turn will close the second relay in the series. b PLC Program reads the Reset Switch on Mod 5 A1. When false Mod 4 C1-C3 is turned on. When true, Mod 4 C5-C7 is turned on. b PLC Program reads the Reset Switch on Mod 5 A1. When the PLC Program senses the one-shot signal (positive transition), 1.25 volts is added to the setpoint of the analog output on Mod 8 Channel 1. If the setpoint is greater than 10 volts, the PLC program will reset the setpoint to 0, before sending out the new setpoint.