Multi-Aperture cores (2861002302)

Part Number: 2861002302 61 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. 

Weight: 0.1 (g)

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•Dimensions (Top numbers are in millimeters, bottom numbers are in nominal inches.).

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+ Test frequency

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 E4990A Impedance Analyzer. The 61 and 67 multi-aperture cores are tested on the E4991A / HP4291B 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.

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