INCH-POUND
A-A-55483A
15 July 2003
SUPERSEDING
A-A-55483
7 September 1994
COMMERCIAL ITEM DESCRIPTION
SHIELDING BEAD, ELECTRONIC
The General Services Administration has authorized the use of this
commercial item description (CID) for all federal agencies.
1. SCOPE. This CID covers the general requirements for electronic shielding beads made of ferrite
material. Electronic shielding beads covered by this CID are intended for commercial/industrial
applications.
2. CLASSIFICATION/PART OR IDENTIFICATION NUMBER (PIN). This CID uses a classification
system, which is included in the Part Identification Number (PIN) as shown in the following example (see
7.1).
AA55483
-
001
CID
Dash number
number
(see table I)
3. SALIENT CHARACTERISTICS.
3.1 Interface and physical dimensions. Electronic shielding beads supplied to this CID shall be as
specified in figure 1.
3.2 Material. Electronic shielding beads supplied to this CID shall be as specified in table I.
3.3 Initial permeability (µo). Initial permeability shall be as specified in table I, from +20°C to +25°C as
measured toroidally.
3.4 Saturation flux density (ßs). Saturation flux density shall be as specified in table I, from +20°C to
+25° as measured toroidally.
3.5 Curie temperature (Tc). Curie temperature shall be as specified in table I.
3.6 Operating temperature range. The operating temperature range is -55°C to +125°C.
3.7 Impedance (Ω). Minimum impedance shall be as specified in table I. When µ0 is 2,000 or 2,500, it is
measured at 25 MHz. The remaining impedance is measured at 100 MHz. All impedances are
measured with 1 turn of wire through the shielding bead.
3.8 Workmanship. The shielding beads shall be fabricated and finished in such a manner that criteria for
appearance, fix, and adherence to specific tolerances shall be observed. The beads shall be of uniform
quality and shall be free from defects that will affect life or serviceability.
Beneficial comments recommendations, additions, deletions, clarifications, etc., and any data which may
improve this document should be addressed to: Defense Supply Center, Columbus, ATTN: DSCC-VAT,
Post Office Box 3990, Columbus, OH 43216-5000, or telephone (614) 692-0557, or facsimile (FAX)
(614) 692-6939.
AMSC N/A
FSC 5950
DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.
For Parts Inquires submit RFQ to Parts Hangar, Inc.
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