multi- aperture cores (2861002402) part number: 2861002402 67 multi- aperture core explanation of part numbers: C?digits 1 & 2 = product class C digits 3 & 4 = material grade ? C last digit 2 = burnished multi- aperture cores are used in suppression applications and in balun (balance- unbalance) and other broadband transformers. they are also employed in airbag designs to prevent accidental activation . ?all multi- aperture cores are supplied burnished. ?our multi- aperture core kit (part number 0199000036) is available for prototype evaluation. for any multi- aperture requirement not listed here, feel free to contact our customer service group for availability and pricing.? weight: 0.5 (g) chart legend + test frequency typical impedance ( ) 100 mhz 80 250 mhz + 118 electrical properties a l (nh) 160 min multi- aperture cores in 73 and 43 materials are controlled for impedance only. the 61 nizn material is controlled for both impedance and a l value. the high frequency 67 material is controlled for a l value. minimum impedance values are specified for the + marked frequencies. the minimum impedance is typically the listed impedance less 20%. ?multi- aperture cores in 73 and 43 material are measured for impedance on the 4193a vector impedance analyzer. the 61 and 67 multi- aperture cores are tested on the 4291a impedance analyzer. all impedance measurements are performed with a single turn to both holes, using the shortest practical wire length. ?the 61 and 67 material multi- hole beads are tested for a l value. the test frequency is 10 khz at < 10 gauss. the test winding is five turns wound through both holes. dim mm mm tol nominal inch inch misc. a 7 0.25 0.276 _ b 6.2 0.25 0.244 _ c 4.2 -0.25 0.16 _ e 2.9 0.10 0.114 _ h 1.7 +0.20 0.071 _
fair- rite products corp.?? ? ??one commercial row, wallkill, new york 12589-0288 888-324-7748 ?? ? ?? 845-895-2055 ?? ? ?? fax: 845-895-2629 ?? ? ?? ferrites@fair- rite.com ?? ? ??www.fair- rite.com
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