IRC Boosts Resistance Range in Ultra-Miniature Silicon Resistor Chips to 1MOhm
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Wire bondable TaNSil® resistors ideal for battery-driven medical implantable devices...
CORPUS CHRISTI, TX (May 2, 2006) - Providing medical electronics and hybrid design engineers with an ultraminiature resistor chip that delivers precision and stability over time and temperature fluctuations, TT electronics IRC Advanced Film Division has extended the resistance range of their wire bondable chip resistors to 1MOhm while maintaining the TCR at ±25ppm/°C. Designated the WBC Series, the resistors combine IRC's tantalum nitride thin film technology with silicon substrate processing to produce devices just 20mil square.
According to Dr. Debasis Roy, Director of IRC Advanced Film Division's Thin Film Business Unit, IRC is the only resistor supplier to develop a 1MOhm precision resistor in such a miniature package with TCRs as low as ±25ppm/°C.
"In addition to a variety of hybrid circuit applications, the 1MOhm resistance value makes the chip resistors suitable for battery-operated implantable applications in medical electronics such as cardiac pacemakers and defibrillators," he said. "Our proprietary TaNSil® process produces an ultrastable self-passivating tantalum nitride resistance element on silicon that provides exceptional stability, power dissipation and precision for these types of applications. The higher resistance range enables the devices to withstand higher surge conditions."
The wire bondable chip resistors are available in 0202 and 0303 chip sizes, with optional gold backside metallization available. The 0303 two-resistor center-tapped chips can be used in feedback circuits of amplifiers, where ratio matching, high power and close tracking between two resistors is critical.
The WBC Series wire bondable resistor chips feature a power rating of 250mW@70°C, with a rated operating voltage of 100V. Resistance range is 10Ohm to 1MOhm, with absolute tolerances to ±0.1% and ratio tolerances (0303 chip) to ±0.05%. Absolute TCRs are ±25ppm/°C, with tracking TCRs to ±2ppm/°C. Operating temperature range is -55°C to +150°C.
As with all IRC products, devices outside these specifications can be produced to meet specific customer requirements. Pricing for the WBC Series resistors typically starts at $1.00 in quantities of 1,000 pieces.
For more information on IRC's WBC Series resistors or to discuss design options, contact the TT electronics IRC Advanced Film Division Sales & Marketing Department at 361-992-7900; via mail at 4222 S. Staples St., Corpus Christi, TX 78411; e-mail at afdsales@irctt.com or visit the IRC Web site at www.irctt.com.
Chip Supply Inc., die distributor for IRC's wire bondable chips, can be reached at www.chipsupply.com.
IRC Inc. is a leading international manufacturer of advanced film, metal glaze and wirewound resistive products with facilities in Corpus Christi, Texas, Boone, N.C., Smithfield, N.C., and Barbados. IRC is part of TT electronics plc, a global electronics company manufacturing a broad range of advanced electronic components, assemblies and sensor modules for the automotive, telecommunications, computer and aerospace markets.
URL: www.irctt.com/pdf_files/WBC.pdf
