Press release
Isabellenhütte 3 / 2014
Dillenburg, Germany, 12th May 2014
Isabellenhütte presents new types of resistors with gold-plated surfaces at PCIM 2014
The PMH-D and PLU gold-plated bondable resistors for mounting
with conductive adhesive
The new PMH-D and PLU precision performance foil resistors from Isabellenhütte are
produced using the Isa-Plan process. In this process, three layers of manganin foil,
copper substrate and an adhesive with good thermal conductivity (ceramic filled) are
pressure bonded. This highly temperature-resistant bonded combination of substrate
and resistant foil ensures optimal dissipation of heat. A small increase in the
temperature of the component has a positive effect on stability and long-term drift.
That is why both resistors are well suited to applications in the automotive sector in
which there are high requirements in terms of temperature and load. They meet the
international AEC-Q200 specifications. The PMH-D and PLU are also used in
industrial applications such as frequency converters and power modules with DCB
ceramic substrates.
The PMH-D (6.7 x 3.4 x 0.7 mm) and the PLU (10.4 x 6.4 x 0.6 mm) are designed for
hybrid mounting with bonding technology. The bonding pads and the back side of the
component are plated with a 0.1 μm layer of gold. That makes soldering and mounting
with conductive adhesive possible. The result is an ideal thermal coupling that makes
best use of the available component surface. The resistors are designed to handle a
constant load of up to 5 W at 150 °C and a constant current of up to 50 A (PMH-D /
size 2512) and 70 A (PLU / size 3924). The PMH-D is currently available as a 2mOhm resistor and the PLU as a 1-mOhm resistor. Both resistors are designed as
four-wire measurement resistors (Kelvin connection) and fulfil the requirements of
RoHS guideline RoHS 2011/65/EU.
Technical details, PLU:
Resistance
1 mOhm
Tolerance
5 % (depending on the bonding position)
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Temperature coefficient (20 - 60 °C)
< 50 ppm/K (depending on the bonding
position)
Temperature range
-55 to +170 °C
Load capacity
5W
Inner thermal resistance
< 4 K/W
Inductance
< 10 nH
Dielectric strength
100 VAC
Stability (nominal load)
Deviation after 2,000 hrs
TK = contact point temperature
< 0.5 % (TK = 120 °C)
< 1.0 % (TK = 150 °C)
Technical details, PMH-D:
Resistance
2 mOhm
Tolerance
5 % (depending on the bonding position)
Temperature coefficient (20-60 °C)
< 50 ppm/K (depending on the bonding
position)
Temperature range
-55 to +170 °C
Load capacity
5W
Inner thermal resistance
< 10 K/W
Inductance
< 3 nH
Dielectric strength
100 VAC
Stability (nominal load)
Deviation after 2,000 hrs
TK = contact point temperature
< 0.5 % (TK = 90 °C)
< 1.0 % (TK = 120 °C)
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The Isabellenhütte PMH-D (right) and PLU resistors with gold-plated connectors for
conductive adhesive mounting, soldering and bonding are ideal under extreme
conditions.
Visit us:
Isabellenhütte Heusler GmbH & Co. KG will be exhibiting at PCIM Europe 2014
Hall 7, Booth 123
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About Isabellenhütte Heusler
Isabellenhütte Heusler GmbH & Co. KG has been owned by the Heusler family since
1827. Today, the company is an international leader in the production of low-ohmic
precision and power resistors. Other business units are dedicated to the production of
precision alloys, while the measurement technology designed by Isabellenhütte is
considered to lead the field of shunt-based current measuring systems. The company
combines its precision measuring systems under the new brand name ISAscale®.
Around 720 staff are employed at its headquarters and production works in
Dillenburg, Hesse.
www.isabellenhuette.de
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Many thanks!
Contact:
Ingmar Georg
Area Sales Manager Components
Isabellenhütte Heusler GmbH & Co. KG
Eibacher Weg 3 - 5
D-35683 Dillenburg
Tel.: +49 2771 / 934-280
Fax: +49 2771 / 934-99154
ingmar.georg@isabellenhuette.de
Media:
Michaela Wassenberg
Wassenberg Public Relations für
Industrie und Technologie GmbH
Rollnerstr. 43
D-90408 Nürnberg
Tel.: +49 911 / 598 398-0
Fax: +49 911 / 598 398-18
m.wassenberg@wassenberg-pr.de
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