This is a 100% small business set-aside for a firm-fixed-price order to supply 110 brand-name Vicor PI3749-00-LGIZ Switch Regulators, which must be in stock and ready to ship as they are end-of-life material. The required items must include counterfeit testing, date codes, lot codes, and country of origin, with delivery FOB Destination to Newport, RI 02841. The brand-name requirement is justified by the regulator’s unique specifications, including high power density, specific form factor, and EMI performance, which are critical for submarine communication systems. Offers must include delivery lead time, pricing, shipping costs, and a validity date of at least 60 days, with registration in SAM required prior to award. The government intends to award based on the brand-name only basis due to significant duplicative costs and mission impact of alternative products.