DLA A-A-55484-1994 SHEILDING BEADS FERRITE LEADED EMI SUPPRESSOR.pdf
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1、A-A-55484 m 9999974 OLb45bL 950 m I INCH-POUND I A-A-55484 1 August 1994 COMMERCIAL ITEM DESCRIPTION SHIELDING BEADS, FERRITE, LEADED, EM1 SUPPRESSOR The General Services Administration has authorized the use of this comercial item description (CID). Abstract. material. This CID covers the general r
2、equirements for a family of leaded shielding beads made of ferrite Application. Shielding beads covered by this CID are intended for comnercial/industrial applications and shall not be used in military systems needing stringent environmental and electrical requirements. Part or Identifying Number (P
3、INL. The PIN for the CID shall be as shown in the following example: I t A-A-55484 - O0 1 i - I CID number Dash number Optional packaging (see figure 1) Salient characteristics. Design, construction, and dimensions. Design, construction, and dimensions shall be as specified on figure 1. 30 are to at
4、tenuate frequencies below 25 MHz; PINS 1 through 12 are to attenuate frequencies 25 MHz and higher; and PINS 13 through 21 are to attenuate frequencies 200 MHz and higher. Material. The ferrite bead shall be nickel zinc, manganese zinc or equivalent ferrite. PINS 22 through Impedance (O). Impedance
5、shall be as specified in table I. All impedances are measured uith 1 turn of wire through the ferrite bead. Operating temperature range. Optional packaging. When optional packaging is required, whether the leaded bead should be taped and The operating temperature range shall be -54C to +llOC. reeled
6、 for automatic insertion equipment, a suffix I8T8 shall be added to the PIN. Workmanship. The ferrite beads shall be fabricated and finished in such a manner that criteria for appearance, fix, and adherence to specific tolerances shall be observed. quality and shall be free from defects that will af
7、fect life or serviceability. The bead shall be uniform in Marking. Parts shall not be marked. The unit package supplied to this CID shall be marked with the manufacturers standard PIN. Regulatory requirements. This section is not applicable to this CID. AMSC N/A DISTRIBUTION STATEMENT A. Approved fo
8、r public release; distribution is unlimited. FSC 5950 Licensed by Information Handling ServicesA-A-55484 9999974 OLb4562 897 001 A-A-55484 A “through coren1 C 1 .I38 1.010 #22 AWG TCW .I75 1.010 2.375/2.500 II- 003 004 =Dachber I .I38 1.010 #22 AWG TCW .263 I.010 2.375/2.500 .I38 1.010 #22 AWG TCW .
9、300 1.020 2.375/2.500 Dimensions 006 007 .138 1.010 #22 AWG TCW .375 t.010 2.375/2.500 .I38 1.010 #22 AWG TCW .450 1.015 2.3E/2.500 008 009 I 002 I .I38 1.010 I #22 AWG TCW 1 .350 1.020 I 2.375/2.500 .I38 1.010 #22 AWG TCW .545 2.025 2.375/2.500 -385 1.010 #20 AWG TCW -450 2.015 2.375/2.500 012 013
10、I 005 I .I38 i.010 I #22 AWG TCW I .236 1.010 I 2.375/2.500 .I38 i.010 #22 AWG TCW .206 I.010 2.375/2.500 .I38 1.010 #22 AWG TCW .I75 2.010 2.375/2.500 014 015 .I38 1.010 #22 AWG TCW .350 I.020 2.375/2.500 .I38 1.010 #22 AWG TCW .263 1.010 2.375/2.500 I O10 I .385 +.O10 I #20 AWG TCW I .550 t.020 I
11、2.375/2.500 016 017 I o11 I .385 1.010 I #20 AWG TCW I .650 1.020 I 2.375/2.500 .I38 1.010 #22 AWG TCW .300 1.020 2.375/2 .SOO .I38 1.010 #22 AWG TCW .236 2.010 2.375/2.500 I 019 .I38 1.010 #22 AWG TCW .450 2.015 2.375/2.500 I 018 I .I38 1.010 1 #22 AWG TCW I -375 2.010 I 2.375/2.500 Figure 1. Dimen
12、sions and configuration. 2 Licensed by Information Handling ServicesA-A-55484 W 9999974 0364563 723 W Dash number A-A-55484- O20 Dimensions B A Vhrough core“ C 1 .I38 2.010 #22 AWG TCW -545 1.025 2.375/2.500 o21 o22 .I38 2.010 #22 AWG TCW 206 t.O1O 2.375/2.500 .I38 t.010 #22 AWG TCW .I75 t.010 2.375
13、/2.500 I 025 I .I38 2.010 I #22 AWG TCW I .300 2.020 I 2.375/2.500 I 023 024 .I38 2.010 1 #22 AWG TCW 1 .236 I.010 I 2.375/2.500 I .I38 1.010 #22 AWG TCW .350 t.020 2.375/2.500 .I38 +.O10 #22 AWG TCW .263 2.010 2.375/2.500 I 027 I .I38 t.010 I #22 AWG TCW I .375 1.010 I 2.375/2.500 I 029 030 I 028 I
14、 .I38 t.010 I #22 AWG TCW I .450 t.015 I 2.375/2.500 I .I38 t.010 #22 AWG TCW .545 t.025 2.375/2.500 .I38 1.010 #22 AWG TCW .206 1.010 2.375/2.500 Inches n .o10 0.26 .O15 0.38 * 020 0.51 .O25 0.64 -138 3.51 .I75 4.45 .206 5.23 .236 5.99 -263 6.68 -300 7.62 Inches n -350 8.89 .375 9.53 .385 9.78 .450
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