Resistor Voltage Divider is offered in SOT-23 package.

Press Release Summary:

Suited for medical, aerospace, industrial, and military industries, SS1 Series precision voltage divider networks are manufactured in 3-lead SOT-23 package. Networks, consisting of 2 Nichrome thin film resistors on silicon substrate connected in series, are available in resistance nominal and ratio values from 5-100 kohm. Standard ratio values include 1:1, 1:4, and 1:10, with others available. Operating temperature range is -55 to +125ºC.

Original Press Release:

BI Technologies Develops Precision Resistor Voltage Divider for Military, Medical and Industrial Applications

SOT-23 package offers space savings, eases board routing and layout problems...

FULLERTON, Calif (March 31, 2005) - Providing design engineers with an alternative to large resistor network packages that require long signal traces and complex circuit layouts, TT Electronics BI Technologies Electronic Component Division developed a SOT-23 packaged precision voltage divider network suited for the aerospace, industrial, military and medical industries.

Designated the SS1 Series, these divider networks consist of two ultra-stable Nichrome thin film resistors on silicon substrate, connected in series. Packaged into a 3-lead SOT-23 package, the two resistors are connected in series for an optimized voltage divider circuit. A 3-resistor network is also available in a four-leaded SOT-143 package.

"The SS1 Series networks offer design engineers the ability to place a precision network virtually anywhere in their circuit layout, eliminating the need for the long traces and complex routing schemes required for large networks," said Mike Torres, applications engineer and product marketing manager for BI Technologies Electronic Component Division. "The SOT-23 package occupies a similar size footprint to a standard 1206 chip divider. By using several of our SS1 Series voltage dividers with various ratio values, designers can also eliminate the need for expensive custom resistor networks."

The resistor networks are available in a wide range of resistance nominal and ratio values from 5kilo-ohm to 100kilo-ohm. Standard ratio values include, but are not limited to, 1:1, 1:4 and 1:10. Individual resistor tolerances are available to ±0.1% and ratio tolerances are offered to ±0.05%. Standard TCRs are ±25ppm/ºC with tracking tolerances between resistors better than ±5ppm/ºC. The operating temperature range is -55ºC to +125ºC.

The SS1 Series resistors are produced on 150mm silicon wafers and assembled into standard SOT-23 transistor packages to provide mechanical and environmental protection. BI Technologies' proprietary passivation process eliminates concerns about moisture environments for the Nichrome resistive elements. Environmental testing for 1000 hours at 85ºC and 85% RH resulted in a less than 0.2% shift in resistance values, making these resistors ultra stable with long-term reliability.

Typical pricing for the SS1 Series resistor networks is below $0.30 in quantities of 10K pieces, with lead times of eight weeks.

For more information, contact BI Technologies at 714-447-2345, by fax at 714-447-2400; by mail at 4200 Bonita Place, Fullerton, CA 92835; or visit

BI Technologies has been an innovator and leader in electronic components for more than 50 years. The company is a global manufacturer of trimming and precision potentiometers, position sensors, turns-counting dials, chip resistor arrays, resistor networks, integrated passive networks, transformers, inductors, hybrid microelectronics and custom integration products for communication, computer, automotive and industrial application.

BI Technologies serves 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.


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