Passive Component Applications Resistor Solutions for Medical Applications 2006
TT electronics Supplier of electronic and electrical components to the world’s leading companies
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
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”
Welwyn Components, UK Applications Engineering Contacts Custom & new products Special testing Pulse performance data Applications support Stephen Oxley stephen.oxley@welwyn-tt.com Direct: +44 (0)1670 536731 Martin Birkett martin.birkett@welwyn-tt.com Direct: +44 (0)1670 536723
Passive Components Applications Agenda Welwyn Resistive Components for medical applications High pulse applications High voltage / high value applications High precision applications
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
Monitor leadset proection Pulse Applications Defibrillator Monitor leadset proection
Pulse Applications Two products are being offered, CCR1 and PWC2512 Low resistance (470R - 2K2) – CCR1 High resistance (68K - 100K) – PWC2512
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
DSC Double Sided Pulse Chip DSC Features Further 100% increase in pulse capacity over PWC Replacement for costly molded wirewound = PWC DSC
High Voltage Defibrillator charge voltage control
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
High Voltage
High Voltage
High Value High gain amplification, e.g. ECG
High Value
Precision Through-Hole
Precision SMD
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%
Application Note
The End Thank you! Any questions?