Group Inc.'s Vishay Foil Resistors division (VFR) has introduced a series of
ultra-high-precision Bulk Metal Z1-Foil hybrid chip resistors designed for
demanding high-temperature applications to +240°C. The devices are designed for
hybrid circuits with aluminum wire bonding technology.
series is based on VFR's next-generation Z1-Foil technology, which provides an
order of magnitude reduction in the Bulk Metal Foil element's sensitivity to
temperature changes — both external and internal — while providing long-term
stability in high-temperature environments. HTHA devices offer TCR of ±1 ppm/°C
from -55°C to +125°C and ±2.5 ppm/°C from -55°C to +220°C, +25°C ref. The
resistors feature load-life stability to ±0.05% at +220°C for 2,000 hours at
working power, long-term stability to ±0.05% at +240°C for 2,000 hours (no
power), and tight tolerances to ±0.02%. The devices are capable of withstanding
electrostatic discharges to at least 25 kV without degradation.
series is offered in six case sizes ranging from 0603 to 2512 and features
working power to 150 mW at +220°C. The devices provide a wide resistance range
from 5 Ω to 125 kΩ, with any resistance value within this range available at
any tolerance with no additional cost or lead time effect. The resistors
feature a rise time of 1.0 ns, with effectively no ringing, a thermal
stabilization time of <1 s (nominal value achieved within 10 ppm of steady
state value), current noise of 0.010 µVrms per volt of applied voltage (<-40
dB), and a voltage coefficient of <0.1 ppm/V.
series is optimized for a wide variety of high-temperature applications,
including geothermal measuring equipment, turbine engine control, and
environmental test chambers in military, industrial, automotive, and down-hole
U.S. delivery starts at $6.80.
Samples and production quantities are available now, with lead times of five
weeks for samples and eight weeks for standard orders.
Datasheet: Click here.