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Date: 6th Feb 2011
1.0 to 2.5 W thin film chip resistors
with TCR of ± 25 ppm/°C, ± 0.1 % tolerance
Vishay Intertechnology, Inc. has introduced the new PHP
series of precision high-power thin film chip resistors.
The devices feature a low absolute TCR of ± 25 ppm/°C,
tolerances down to ± 0.1 %, and high power ratings
from 1.0 to 2.5 W over a wide temperature range of - 55
°C to + 125 °C.
With stable film and performance characteristics of 1000
ppm at + 70 °C for 2000 hours, these devices are optimized
for high-precision medical imaging, and industrial, telecommunications,
and test and measurement instrumentation and equipment.
Featuring a high-purity ceramic substrate, the PHP series
chip resistors are designed with enlarged backside terminations
to reduce the thermal resistance between the topside resistor
layer and the solder joint on the end users' circuit board.
Offered in the 1206 and 2512 case sizes, the PHP series
offers a resistance range from 10 ohms to 30 k ohms , with
non-standard values available. The resistors feature 2x
the power rating over traditional thin film chip resistors
in the same case sizes, low noise of < - 30 dB, low voltage
coefficients of 0.1 ppm/V, and voltage ratings from 100
V to 200 V. Available with lead (Pb)-free or lead terminations,
the devices are RoHS-compliant and flame-resistant in accordance
to UL 94 V-0.
Samples and production quantities of the PHP series will
be available in Q1 2011, with lead times of 10 to 12 weeks
for standard orders.
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