Profile: Sierra Midwest is a manufacturer of single sided, double sided, and multilayer printed circuit boards for the commercial electronic, aviation & military markets. We are an ISO 9001:2000 certified company. We specialize in engineering prototypes, quick turn around (QTA), and low, medium & high volume PCB production. Our capabilities include high temp/high reliability materials, hard gold tab plating, electrolytic hard gold, bonded heat sinks, hardware assembly, MIL-PRF 55110 G Certified and quality tests in accordance to MIL specifications.