Fullerton, Calif. Providing design engineers with a supply of precision resistive devices for prototyping and design work, TT Electronics BI Technologies Electronic Component Division has developed an engineering sample kit of its SOT-23 packaged precision voltage divider networks.
Designated the SS1 Series, these divider networks consist of two ultra-stable nichrome thin-film resistors on silicon substrates, connected in series and housed in a standard plastic SOT-23 lead package. The divider network sample kits are comprised of four sets of ten devices each. Devices include:
- SOT-23 divider: 12.4 KΩ/20 KΩ resistance values with absolute tolerances to 0.5%, ratio tolerance to 0.1%; temperature coefficient of resistance (TCR) of ±25 ppm/°C
- SOT-23 divider: 10 KΩ/100 KΩ resistance values with absolute tolerances to 0.5%, ratio tolerance to 0.1%, TCR of ±25 ppm/°C
- SOT-23 divider: 5 KΩ/20 KΩ resistance values with absolute tolerances to 0.5%, ratio tolerance to 0.1%; TCR of ±25 ppm/°C
- SOT-23 divider: 20 KΩ/20 KΩ resistance values with absolute tolerances to 0.5%, ratio tolerance to 0.1%; TCR of ±25 ppm/°C
"The smaller, two-resistor network gives design engineers the flexibility to place the network anywhere on the circuit board," said Mike Torres, applications engineer and product marketing manager for BI Technologies Electronic Component Division, in a statement. "With the sample kits, the engineers can have the ability to try out different circuit layouts in the prototyping or breadboard phase of their design."
The company said its proprietary passivation process eliminates concerns about moisture environments for the nichrome resistive elements. Environmental testing for 1,000 hours at 85°C and 85% RH resulted in a less than 0.2% shift in resistance values, making these resistors ultra stable with long-term reliability. The resistive elements are sealed in standard SOT-23 packages to provide additional mechanical and environmental protection. The networks are used extensively in voltage divider and gain circuits for aerospace, industrial, military and medical industries. Click here for the datasheet.
BI Technologies 1-714-447-2345, www.bitechnologies.com/products/passive.htm