B64290-A38-X830 EPCOS Inc, B64290-A38-X830 Datasheet - Page 3

• Manufacturer Part Number: B64290-A38-X830
• Manufacturer: EPCOS Inc

Specifications of B64290-A38-X830

• Lead Free Status / RoHS Status: Compliant

Ring cores are firmly established in a large variety of advanced equipment and systems in electrical
and electronic engineering. In telecommunications they are found in interface transformers for ISDN
applications and in chokes for data and signal lines. EMC solutions with input and output chokes in
switch-mode power supplies are just as dependent on ring cores as the filters of frequency conver-
ters used in electric drives for traction applications and elevators. Lighting engineering needs them
too – ring cores in drive transformers for power transistors in electronic ballasts have long been
state of the art.
Core point: benefits that pay off
Ring cores offer exceptional advantages compared to other types of core, advantages that are in-
dispensable for special requirements. They include in particular high inductance for small space
needs, low parasitic capacitance and – because of the smaller number of turns – the low ohmic re-
sistance of chokes and transformers. A further benefit is that ring cores have low magnetic leakage.
New: coating made to measure
We offer a wide selection of uncoated and coated ring cores. The type of coating depends on the
materials used in different size categories. We work with the following variants: parylene (Galxyl) is
used for small diameter (< 10 mm) ring cores, polyamide is the material for ring core diameters from
4 to 30 mm.
For ring cores of larger diameters and those of high-permeablility materials (e.g. T46), we have a
new development called blue epoxy coating . This is an electrostatically deposited powder coating
exhibiting decisive advantages compared to conventional polyamide coating:
In future we will make general use of the advantages of epoxy coating for all cores 30 mm in dia-
meter. It will also be offered as a special coating for cores of other diameters.
For further information contact the Siemens office near you or write us at
Siemens Matsushita Components GmbH & Co. KG
Marketing Kommunikation
Postfach 801709
D-81617 München
Internet: http://www.siemens.de/pr/index.htm
Siemens Matsushita Components
No drop in A
Much higher voltage strength
Noticeably higher mechanical strength
Substantially higher temperature resistance (up to 200 C)
L
unlike uncoated cores of high-permeability materials (T38 and T46)
3.97
Ring Cores
3