Chip Resistors have power ratings up to 8 W.
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Press Release Summary:
With resistance range of 0.5-5 mohm in tolerances of ±1.0%, BCS8 Series metal element current sense chip resistors offer typ TCR of ±50 ppm/°C, with ±30 ppm/°C resistors available. They feature footprint of 6.4 x 12.8 x 2.5 mm, with temperature rating of 175°C. Surface mount devices have rating current of 90 A, max current of 126 A, and series inductance of 5 nH. Products are suitable for applications such as over current detection, servo motor control circuits, and dc/dc, dc/ac power modules.
Original Press Release:
BI Technologies Develops Surface Mount Current Sense Resistors with 8W Power Rating
Surface mount current sense resistors feature twice the power rating of similar components...
GLENROTHES, SCOTLAND (April 12, 2006) - Providing design engineers with more watts in a smaller footprint, TT electronics BI Technologies SMT Division has developed a series of metal element current sense chip resistors with power ratings up to 8 watts with a temperature rating of 175°C. Designated the BCS8 Series, the surface mount devices feature a footprint of only 6.4mm x 12.8mm x 2.5mm.
According to Jim Rieley, Sales Director for BI Technologies' SMT Division, the BCS8 Series surface mount resistor power rating is unique among current sense resistors. "Most flat current sense components are rated for a maximum of three to four watts under ideal conditions," Rieley explained. "With its 8W power rating and TCRs as low as 30ppm/°C, the BCS8 Series resistors deliver excellent performance, making them ideal for a variety of applications, many of which could not otherwise have been served with a surface mount component."
The resistor is constructed using a low-resistance, low-inductance, high-impulse proprietary metal element that gives the device its extended power and temperature ratings.
The devices are suitable for all current sense applications, including over current detection in battery chargers, servo motor control circuits, and DC/DC, DC/AC and intelligent power modules, Rieley continued. Additional applications for the current detect chip resistors include industrial PC modules (IPM) and precision measurement systems, as well as current detection circuits in high-speed CPU peripherals. The devices can also be manufactured to custom length/width for use as a current shunt.
The current detect chip resistors have a rating current of 90A (at 1mohm), a maximum current of 126A (2.5 sec, one time), and a series inductance of 5nH. Resistance range for the BCS8 Series resistors is 0.5mohm to 5mohm in tolerances as low as ±1.0%. Typical TCR is ±50ppm/°C, with ±30ppm/°C devices available.
Operating temperature range is -55°C to +175°C, and the hot spot temperature of the device at 8W applied power is 175°C. Special considerations when mounting the BCS8 Series devices include a 10 - 20°C recommended increase in reflow solder temperature.
BI Technologies will also produce devices outside these specifications to meet customer requirements, with comprehensive application engineering and design support available for customers worldwide.
Typical pricing for the BCS8 Series resistors starts at $1.50 in quantities of 500. Lead times are from stock to 6 weeks. Samples are available immediately for engineering evaluation and customer prototypes.
For more information, contact the TT electronics - BI Technologies SMT Division at +44-1-592-662200; via mail at Telford Road, Eastfield Industrial Estate, Glenrothes, Fife, Scotland, KY7 4NX; e-mail at sales@bitechnologies.co.uk or visit the BI Technologies Web site at www.bitechnologies.com.
BI Technologies is a global manufacturer of power resistors and resistor networks, chip resistor arrays, integrated RC passive networks, trimming and precision potentiometers, position sensors, transformers, inductors, and hybrid microelectronics for communication, computer, automotive, medical and industrial application, serving a global customer base with manufacturing locations in the United States, Mexico, Scotland, Japan, China and Malaysia.
TT Electronics plc is a global electronics company manufacturing a broad range of advanced electronic components, assemblies and sensor modules for the automotive, industrial, telecommunication, computer and aerospace markets
For more information, contact:
Jim Rieley, Sales Director
BI Technologies SMT Division
+(44) 1-592-662200
jimrieley@bitechnologies.co.uk
