New-Tech Europe | Sep 2017 | Digital Edition

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new products
some radio equipment manufacturers faced challenges
in meeting the deadline, all Hirschmann affected radio
devices are RED-compliant on time.
Per the European Commission, the new RED ensures
a single market for radio equipment by setting essential
requirements for safety and health, electromagnetic
compatibility and the efficient use of the radio spectrum.
This applies to all products using the radio frequency
spectrum, including Hirschmann products.
To meet the new requirements defined by RED,
Hirschmann devices with the HiLCOS operating system
(OpenBAT, BAT450-F and BAT867-R) are now being
produced with new software versions (09.12.5700 and
09.14.5700).
VPG Foil Resistors Announces Ultra-High
Precision Military and Space Grade Resistors
for High-Performance Current Sensing within
Mission-Critical Applications
The VPG Foil Resistors product group of Vishay
Precision Group (NYSE: VPG) (www.vpgfoilresistors.
com), manufacturers of the industry’s most precise and
stable precision resistors, today introduced the Model
303337 ultra-high precision military and space-grade
resistor, offering high-performance current sensing
within mission-critical applications.
The Model 303337 produces a highly precise voltage
that is directly proportional to measured current levels,
with significantly reduced component sensitivity to
applied power changes, including PCR and thermal
resistance values. The industry-exclusive design of
the Model 303337 incorporates VPG’s own proprietary
Bulk Metal® Z Foil resistive technology, along with a
four-terminal Kelvin connection, for ultra-high precision
current sensing and temperature stability to 3W.
Additional attributes include a low temperature coefficient
of resistance (TCR) of ±5 ppm/°C (–55°C to +125°C, at
+25°C ref.), for reduced risk of measurement errors due
to temperature changes; improved load-life stability of
±0.02% (typ.), at +70°C for 2000 hours (rated power);
a low power coefficient of resistance (PCR) of 5 ppm/W
at rated power; a resistance tolerance to ±0.1%; a 100
to 200 mΩ resistance range; a short-time overload of
0.005% typical; an electrostatic discharge (ESD) limit of
< 25 kV; solderable terminations; and a choice of either
lead (Pb)-free or tin/lead alloy solder finish.
To ensure total resistor reliability and conformance to
published specifications, each unit undergoes stringent
testing across its full batch lot. A Quality Conformance
Inspection report accompanies each shipment, detailing
all test data collected during Environmental Test
Laboratory studies. The report offers design engineers a
reliable set of data for the anticipation of actual resistor
performance within an intended installation environment.
Data includes screen/test flowper EEE- INST-002 (Tables
2A and 3A, Film/Foil, Level 1), MIL-PRF-55342 and MIL-
PRF-49465, among other parameters. For customer
convenience, prototype quantities of the Model 303337
resistor are also available with expedited deliveries.
Please contact for details.
The Model 303337 ultra-high precision surface mount
resistor may be specified within demanding and
mission-critical military, aerospace, defense and space
applications, including those where a precision resistor
is required to quickly reach thermal equilibrium, within
circuits that either require fast response times, or which
are characterized by rapid current changes. Within the
military, aerospace, defense and space industries, typical
applications include commercial and military avionics,
switching linear power supplies, power amplifiers,
power management systems, feedback circuits,
measurement instrumentation and associated automatic
test equipment. Other applications include switching and
linear power supplies, precision high current-sensing,
power management systems, feedback circuits, power
amplifiers, and precision electronic scales. To learn
more about VPG Foil Resistors and its available product
offerings, visit .
New-Tech Magazine Europe l 81