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ORDERING INFORMATION
How To Order Tape Wound Cores
Magnetic Metals' Tape Wound Cores should be ordered by part number.
The part number of the tape wound core describes the core size, case type, material
and material thickness.
EXAMPLE: The part number 11-P-4602 designates a core with a 1" I.D. X 1.5" O.D.
X .375" strip width (height), made from .002" thick Square 50 material in a plastic
case.
11-Size code
P-Case code
46-Material code
02-Tape thickness code
Core Size
Tape wound core sizes and physical characteristics - designated by a two, three
or four digit number - are tabulated on pages 11 through 13, Table VII.
Case/Coating Codes
Available case and coating types are designated by a letter (Example: A = Aluminum)
and are listed in Table I, Page 9. Epoxy coatings are
designated by the code "E", "D", and "M". Due to shrinking stresses of Epoxy
coating, uncased cores using the "D" coating are guaranteed only to meet the
core loss limits for Microsil material. Microsil cores required to meet guaranteed
CCFR (Constant Current Flux Reset) limits and/or matching should be ordered with
the "M" coating or case. "D" coating is not recommended for uncased nickel cores.
Gapped Cores
See special section, page 19 on how to order and specify gapped cores.
Pulse Cores
Cores for pulse applications are processed and tested differently. Add
suffix "P" to standard core number. See page 8 for information.
Material Code
Magnetic Metals has assigned code number to the various types of materials used
the manufacture of Tape Wound Cores. For example, the 80% nickel/iron alloy processed
for maximum initial premeability - known as Permalloy, HyMu 80, etc. - has been
assigned the material code number "80".
On pages 5 and 6, the materials are described in more detail.
Table II, page 9, present Magnetic Metals' material designations, and provides
the code numbers to be used when ordering.
Tape Thickness Code
Materials used in the manufacture of Tape Wound Cores are supplied in thicknesses
from .0005" through .012" for nickle alloys. Silicon alloys (Microsil) are available
from .001 through .012.
Table IV, Page 10, indicates the available thicknesses and the ordering
code.
Pulse or High Frequency Applications
Magnetic Metals has developed a special process whereby tape wound core pulse
or high frequency performance is optimized. To ensure that cores intended for
pulse applications are manufactured under this process, the suffix "P" should
be added to the standard core number, i.e., 11P4601-P. Cores specially processed
for pulse applications will not necessarily meet the low frequency CCFR limits
published in this catalog. |
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