Semefab

Sensor and Silicon Solutions

By Zack Sharon

©Semefab (Scotland) Ltd Sensor and Silicon Solutions rev18 www.semefab.co.uk

 Semefab Overview
Custom Wafer Fabrication
~£7M turnover (FY08)
Ship ~115 million Dies / year
Global Fabrication Player
Development Model
~64% Export Bias
Full Technology Cycle
>35 Customers Worldwide
Volume Model
£13.6M Capex Investment
Design Partnerships
Technology Transfers
Fab 1: 2.0 m – 3.0 m
Established 1986
Fab 2: 0.45 m
Private Ownership
Fab 3: 0.45 m

©Semefab (Scotland) Ltd Sensor and Silicon Solutions rev18 www.semefab.co.uk

 Manufacturing Operations
Fab Operations Diverse Process Portfolio
Fab 1: 4” Multi-Process Si Gate CMOS & Opto CMOS
Metal Gate CMOS & PMOS
Fab 2: 4” & 6” MEMS
HV DI BiCMOS
Fab 3: 6” Multi-Process Mixed Signal ASICs & Opto ASICs
Wafer Test Operation Linear Bipolar & Epitaxial Bipolar

ISO9001, ISO14001, BS5750 Discrete DMOS RF MOSFET

Discrete Lateral FET
UL & ESA Approval
Discrete Low Noise N Channel JFET
Investors in People Discrete P Channel MOSFET
Team of 98 People Discrete PiN Photo Diode
2% Doctorate Power MOS
7% Masters Power Bipolar

12% Graduate Fast Recovery Diode

15% Technicians MEMS

©Semefab (Scotland) Ltd Sensor and Silicon Solutions rev18 www.semefab.co.uk

 Development Model
Open Access Facility for Industry and Academia
Technology Partnering
Background & Foreground IP agreements
Full Technology Cycle – Feasibility – Proof of Concept - Prototypes
Commercialisation Focus
Tangible Development Outcomes
Funding Justification – Research, Venture Capital, Investor…
In-house Design Simulation & External Partnerships
Semefab Process Development & Process Engineering Integration
Seamless Transition from Development to Volume
In-house Test Operation for product development

©Semefab (Scotland) Ltd Sensor and Silicon Solutions rev18 www.semefab.co.uk

 Volume Model

Fab 1: Fabrication capacity of 50,000 4” wafers per year

Fab 2: Fabrication capacity of 25,000 4”/6” wafers per year
Test floor supports wafer test & package test
Electrical parametric testing
Sensor functional testing i.e. pressure etc.
Actual device packaging is subcontracted

Fab 3: Planning 25,000 6” wafers volume per year

Fab3 design phase starts September 2009
Fab 3 scheduled operational date June 2010

Semefab is your low risk, value-add fabrication partner

©Semefab (Scotland) Ltd Sensor and Silicon Solutions rev18 www.semefab.co.uk

 Diverse Portfolio

ASIC Portfolio: Foundry Portfolio: MEMS Portfolio:

Garage Door Opener Precision Op-Amps Pollution Control
JFET PIR Sensor Mains Borne Signalling Automotive Engine Mgt
Ionisation Smoke Detector Secure Telecoms Automotive Air Quality
Optical Smoke Detector RF Base Stations & PMR Altimeters
Automotive Wiper Audio Amplification Ear Thermometers
Automotive Window Lift Power Devices & Modules Optical Transceiver
PSU Watchdog X-Ray Detection Pressure Sensors
Light Sensing & Switching Gas Sensors
Temperature Sensors

MEMS Development: > 22 Active Development Projects

©Semefab (Scotland) Ltd Sensor and Silicon Solutions rev18 www.semefab.co.uk

 Fab1 Process Capability
Double Side Alignment
Wet Etch - Pre-diff clean, HF, HCl, Buffered oxide etch,
Al wet etch, Si Etch, Hot Orthophosphoric etch, Solvent Strip,
Overlay etch
Dry Etch – PolySi, SiO2, Nitride, Aluminium
PECVD Low stress Nitride & Oxynitride
PECVD TEOS & BPTEOS
Furnace Stacks – LPCVD Nitride, Poly, Oxide
Furnace Stacks – Thermal Oxidation, Diffusion, Boron & Phos Doping
Ion Implant
Sputter – AlSi, Al, Cu

©Semefab (Scotland) Ltd Sensor and Silicon Solutions rev18 www.semefab.co.uk

 Fab2 Layout

600m2
Class 100

Photo is class 10
Central corridor is
class 1000

©Semefab (Scotland) Ltd Sensor and Silicon Solutions rev18 www.semefab.co.uk

 Fab2 Process Capability

Oxidation Stack PECVD Thin Films - SiO2, SiN, SiON

Wet Etch - Pre-diff clean, HF, HCl, Wafer-Wafer & Wafer-Glass Bonding
Buffered oxide etch, Al wet etch, Anodic, Eutectic, Fusion, Glass-Frit
Si Etch, Solvent Strip Coat/Develop track – bulk dispense
KOH wet etch, Lift-off Coat/Develop track – syringe dispense
Multi-Metal Sputter – Au, TiW, Al, AlSi, Polyimide – coat & bake
AlCu, Ti, Ni, NiCr, Al2O3, Constantan, XeF2 dry etch release
SiCr, Sn HF vapour dry etch release
Evaporation – Cr, Ni ,Pt, Au, Ti Deep Reactive Ion Etch (Fab1 Annexe)
Dry Etch – Oxide, Poly/Nitride STS Pegasus
Double side aligner Electroplating of Cu and Au
Stepper Resist strip dry etch

©Semefab (Scotland) Ltd Sensor and Silicon Solutions rev18 www.semefab.co.uk

 Fab3 Layout

1,200m2 Class 100

©Semefab (Scotland) Ltd Sensor and Silicon Solutions rev18 www.semefab.co.uk
 Fab3 Planned Process Capability
Furnace stack – LPCVD Oxide, Poly, Nitride
Furnace stack – Oxidation, Drive, Boron & Phos Deposition
Double side aligner
Stepper
Wet etch
Dry etch – Oxide, Poly/Nitride, Metal etch
LAM Rainbow platform
Sputter – Al, AlSi, AlCu with pre-etch

©Semefab (Scotland) Ltd Sensor and Silicon Solutions rev18 www.semefab.co.uk

 Test Operations Capability

Reedholm Instruments RI20/RI40 Parametric Tester(3)

Tesec 8101TT - Discrete Device Tester (3kV/20A) (1)
Exatron SOIC / DIP Handler (2)
Multitest SOIC / DIP Handler –400C to +1250C (5)
Electroglas 2001X Wafer Auto-prober (6)
Wentworth 1050 Semi-auto Prober (high-voltage) (1)

©Semefab (Scotland) Ltd Sensor and Silicon Solutions rev18 www.semefab.co.uk

 Thank you – Any Questions?

Semefab

Semefab (Scotland) Ltd., Newark Road South, Eastfield Industrial Estate, Glenrothes, Scotland, UK
Telephone: +44 1592 630630 Fax: +44 1592 775265 Web: www.semefab.co.uk

©Semefab (Scotland) Ltd Sensor and Silicon Solutions rev18 www.semefab.co.uk