Multi- Aperture cores (2861001502) Part Number: 2861001502 67 MULTI- APERTURE CORE Explanation of Part Numbers: – Digits 1 & 2 = Product Class – Digits 3 & 4 = Material Grade – 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.  Catalog Drawing 3D Model Weight: 1.7 (g) Dim mm mm tol nominal inch inch misc. A 13.3 ±0.60 0.525 _ B 6.6 ±0.25 0.26 _ C 7.5 ±0.35 0.295 _ E 5.7 ±0.25 0.225 _ H 3.8 ±0.25 0.15 _ Chart Legend + Test frequency Typical Impedance (Ω) 100 MHz 90 250 MHz+ 115 Electrical Properties A (nH) 145 Min L Multi- aperture cores in 73 and 43 materials are controlled for impedance only. The 61 NiZn material is controlled for both impedance and A value. The high frequency 67 material is controlled for A value. Minimum impedance values are specified for L L 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 value. The test frequency is 10 kHz at < 10 gauss. The test winding is L five turns wound through both holes.

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