Signal Transformer has three design kits with some of the most popular values of the SMD and HCTI inductor families. The HCTI design kit contains 18 different values of the high current toroidal inductors used in power supply applications. The lighting design kit contains 16 different values and styles of the most popular SMD inductors used in lighting applications (quantity of 10 each). The multipurpose design kit contains 3 samples of the HCTI inductors and 15 different SMD inductors typically used in designs of industrial and consumer products.