T200-B Iron Powder Toroid Inductor Core Amidon Micrometals Toroidal Coil Form T-200-B

This is one item of new iron powder toroidal inductor core from Amidon - Micrometals available in various frequency grades. These are the chunky T200-B size. The outer diameter is 50.8mm, the inner diameter is 31.8mm, and the height is 25.4mm.

These are used to make high Q inductors for use in matching and filtering Type 2 Red are generally for use above 2MHz but are often used a bit lower in practice. Type 26 Yellow-White are for use below about 2 MHz in the LF / MW frequency range. A seven turn test winding and results are shown in the secondary pictures.

T200-2B Red Al = 21.8 nH/N^2
T200-26B Yellow-White AL = 160.0 nH/N^2