SRR Shielded Power Inductors Bourns SRR Series Shielded Power Inductors are small SMD inductors for input/output of DC/DC converters and power supplies for portable communications equipment, camcorders, LCD TVs, and car radios. Bourns SRR Series Shielded Power Inductors feature inductances from 1.0µH to 10,000µH, current ratings up to 11A, and are offered in both E6 and E12.