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Passive Component Applications
Resistor Solutions for Medical Applications 2006
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TT electronics Supplier of electronic and electrical components to the world’s leading companies
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TT electronics (Components)
Resistive Components Sensors Hybrids AB Sites Salzburg; Werne; Klingenburg FE offices; Japan; Malaysia; Singapore USA sites; Corpus Christi; Boone; Smithfield Europe offices; UK, France, Germany, Italy Magnetic Materials Wound Components Optoelectronics
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Welwyn Components, UK 1937: Started Resistor Manufacture in Welwyn Garden City near London 1948: Moved to Northumberland, near Newcastle 1960: Started Hybrids Manufacture 1990: Acquired By TT Group 2001: TT became “TT electronics plc”
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Welwyn Components, UK Applications Engineering Contacts
Custom & new products Special testing Pulse performance data Applications support Stephen Oxley Direct: +44 (0) Martin Birkett Direct: +44 (0)
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Passive Components Applications
Agenda Welwyn Resistive Components for medical applications High pulse applications High voltage / high value applications High precision applications
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Defibrillator Pulse Protection High Gain Amplifier Feedback
Applications: Medical Carbon-Ceramic Composition CCR1 Defibrillator Pulse Protection High Gain Amplifier Feedback High Value Chip HR Defibrillators Monitors Charge Voltage Control Welwyn High Voltage Chip HVC In-Vitro Diagnosis Precision Metal Film RC / CAR / MAR Scanners X-Rays Analysis Imaging 70-100kV X-Ray Head Ultra-High Voltage T48 4500
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Monitor leadset proection
Pulse Applications Defibrillator Monitor leadset proection
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Pulse Applications Two products are being offered, CCR1 and PWC2512
Low resistance (470R - 2K2) – CCR1 High resistance (68K K) – PWC2512
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PWC Pulse Withstanding Chip
PWC Features Choice of high stability materials (same as for military CECC parts) Trimming method avoids hotspot and redundant film area Commodity Chip
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DSC Double Sided Pulse Chip
DSC Features Further 100% increase in pulse capacity over PWC Replacement for costly molded wirewound = PWC DSC
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High Voltage Defibrillator charge voltage control
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Voltages 50 to 100kV, Resistances 200M to 1G.
High Voltage X-ray power supply Voltages 50 to 100kV, Resistances 200M to 1G. X-Ray 200M 13K -70kV -4.7V
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High Voltage
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High Voltage
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High Value High gain amplification, e.g. ECG
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High Value
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Precision Through-Hole
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Precision SMD
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MELF format also available
Compact precision WRM MELF format also available 0102 / 0204 / 0207 sizes High stability metal film Ideal for measurement circuits TCR to 5ppm Tolerance to 0.1%
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Application Note
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The End Thank you! Any questions?
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