Pa. — Vishay Intertechnology Inc. is
adding to its passive component portfolio for extreme high-temperature
environments with a new series of SMD wraparound thin-film chip resistors
optimized for use in multichip modules for down-hole drilling and aerospace
The new Vishay Sfernice PHT
high-precision wraparound chip resistors feature an operating temperature range
from – 55 °C to + 215°C, with a maximum storage temperature up to +230°C, which
the company claims is an industry-first for any resistor built on thin film
technology. Even with this high temperature rating, the devices feature a load
life stability of 0.5 % after 1000 hours at 215°C, as well as tight TCR and
tolerance values. Typical TCR for the new resistors is 25 ppm/°C, with
available tolerances down to 0.05 %.
The PHT resistors, which have a
0.5-mm height profile, are available in 0603, 0805, 1206, and 2010 case sizes,
with an ohmic range of 10 O to 7.6 MO, depending on series. Their power ratings
range from 12.5 mW to 100 mW.
The PHT devices feature an SMD
wraparound construction with gold terminations. An enlarged termination option
is available for applications with extraordinary power dissipation
Pricing: For U.S. delivery ranges
from $1.80 to $5.00, depending on case size and tolerance.
Samples and production quantities are
available now, with lead times of 11 to 12 weeks for larger orders.