MALVERN, Pa.--(BUSINESS WIRE)--
Vishay Precision Group, Inc. (NYSE: VPG) today announced that its Vishay
Foil Resistors brand (VFR) has released a new ultra-high-precision
Z1-Foil flip-chip resistor, the FRFC 0805, with exceptional load-life
stability of +/-0.005% (50 ppm) at 70°C and rated power for 2,000 hours;
low typical TCR of +/-0.05 ppm/°C from 0°C to +60°C and +/-0.2 ppm/°C
from -55°C to +125°C (+25°C ref.); power TCR (delta R due to
self-heating) of 5 ppm at rated power; and tight tolerances to +/-0.01%.
Based on VFR’s next-generation Bulk Metal® Z1-Foil
technology, the FRFC 0805 (foil resistor flip-chip) excels over all
previous stability standards for precision resistors with an order of
magnitude improvement in high-temperature stability, load-life
stability, and moisture resistance. These new benchmark levels of
performance provide design engineers with the tools to build circuits
not previously achievable while reducing costs and space in the most
critical applications by eliminating the need for corrective circuitry
and reducing the large land patterns needed for a wrap-around
configuration. The device’s flip-chip configuration saves up to 35% PCB
space compared with a surface-mount chip with wraparound terminations
while also providing strain relief to eliminate cracked substrates and
board delamination.
In addition to its remarkably improved load-life stability, the FRFC
0805 is noise-free and provides ESD protection of 25 kV or more for
increased reliability. The device’s solid element alloy is matched to
the substrate, forming a single entity with balanced resistance versus
temperature characteristics for an unusually low and predictable TCR
over a wide temperature range from -55°C to more than +125°C. The
adhesive that holds the foil to the flat substrate withstands high
temperatures, pulsing power, moisture incursions, shock and vibration,
and low-temperature exposure while still holding securely to the foil
element. Resistance patterns are photo-etched into the element to permit
the trimming of resistance values to very tight tolerances as low as
0.01%.
“Allowances in total error budget must be made for the stresses —
especially mounting and thermal cycling for surface-mount devices — that
will change a resistor’s end-of-life tolerance,” said Yuval Hernik,
senior director of application engineering for VFR. “These allowances
depend on the specific resistor application and the service conditions
in which the equipment is installed. The less stable a resistor is, the
more allowance for instability is required. These allowances are
considered cumulative, and when subtracted from the end-of-life error
budget, they impose a tighter tolerance at the point of purchase.
“The combination of flip-chip terminations and Z1-Foil construction and
materials results in the most stable resistors available, requiring the
lowest error allowance. This means that more error allowance can be
transferred to active devices — resulting in lower costs — or applied to
the foil resistors themselves, allowing for looser initial tolerances
than would be required for other resistor technologies.”
The FRFC devices are qualified as anti-sulfurated resistors for use in
environments with high levels of contamination. Such environments
include alternative energy applications, industrial control systems,
sensors, RTDs, electric instrumentation, weather and communication base
stations, and any electronic appliance used in high concentrations of
sulfur.
The FRFC 0805 offers a wide resistance range from 5 ohms to 8 kilohms.
Any resistance value within this range is available at any tolerance
with no additional cost or lead time effect. The resistor features power
ratings to 200 mW at +70°C, a rise time of 1.0 ns with effectively no
ringing, a thermal stabilization time of less than 1 s (within 10 ppm of
steady state value), current noise of 0.010 microvolts rms/V of applied
voltage (less than -40 dB), and a voltage coefficient of less than 0.1
ppm/V. The RoHS-compliant device offers a non-inductive (less than 0.08
microhenries), non-capacitive design and is available in matched sets
upon request.
Samples and production quantities of the FRFC 0805 are available now,
with lead times of five working days for samples and five weeks for
larger orders.
Further information about the FRFC 0805 and other Vishay Foil Resistors
products is available at www.vishayfoilresistors.com.
Follow Vishay Foil Resistors at http://twitter.com/foilresistor.
About Vishay Precision Group
Vishay Precision Group (VPG) is an internationally recognized designer,
manufacturer and marketer of: components based on its resistive foil
technology; sensors; and sensor-based systems specializing in the
growing markets of stress, force, weight, pressure, and current
measurements. VPG is a market leader of Foil Technology Products,
providing ongoing technology innovations in precision foil resistors and
foil strain gages, which are the foundation of the Company’s Force
Sensors Products and its Weighing and Control Systems. The product
portfolio consists of a variety of well-established brand names
recognized for precision and quality in the marketplace. To learn more,
visit VPG at www.vishaypg.com.
About VPG Foil Resistors
VPG Foil Resistors, a part of Vishay Precision Group (VPG), produces the
most precise and stable resistors available. Distinguished by the
premier brands Vishay Foil Resistors, Powertron, and Alpha Electronics,
the VPG Foil Resistors portfolio includes discrete resistors and
resistor networks in surface mount and through-hole (fixed-lead)
configurations; customized chip resistor networks; precision trimming
potentiometers; and discrete chips for use in hybrid circuits. These
devices are used in applications requiring a high degree of precision
and stability, such as in medical testing equipment, semiconductor
equipment, precision measuring instruments, aerospace, and military
applications. To learn more, visit www.vishayfoilresistors.com.
Bulk Metal is a registered trademark of Vishay Precision Group, Inc.
Link to product photo:
http://www.flickr.com/photos/[email protected]/9351592543/sizes/l/in/photostream/
Link to detailed product information:
http://www.vishaypg.com/ppg?63237
Vishay Precision Group
Marti Spalding, +1 919-374-5515
Director,
Global MarCom
[email protected]
Source: Vishay Precision Group, Inc.