The presented multi-aperture core features a two-hole design. It is used in suppression applications and in balun (balance-unbalance) and other broadband transformers. They are also employed in airbag design to prevent accidental activation. All multi aperture cores are supplied burnished. Multi-aperture cores in 73 and 43 materials are controlled for impedance only. The 61 NiZn material is controlled for both impedance and AL value. The high-frequency 67 material is controlled for AL value. All listed impedance values are typical values. Minimum impedance values are specified for the + marked frequencies. The minimum guaranteed impedance is the listed typical impedance less 20%. Multi-aperture cores in 73 and 43 material are measured for impedance on the 4193A vector impedance analyzer. The 61 multi-aperture cores are tested on the 4191A impedance analyzer. All impedance measurements are performed with a single turn to both holes, using the shortest practical wire length.

• Processed under strict quality control.
• Available in assorted designs.