Tech9’s 3-A dc-to-dc buck-boost converter provides power up to 36 VA and accepts inputs ranging from 6 to 70 V with constant output. Models are available with outputs of 3, 3.3, 5, 6, 9, 12, 15, and 24 V dc. According to the company, units are suitable for mobile and portable devices in automotive, industrial, commercial, railroad, and military applications. Various options include SAE J1455, ISO-7637-2 load dump protection, and noise abatement. The power converters are short-circuit-proof and can be operated in ambient temperatures as high as 70°C (158°F). They offer +2% output voltage tolerance with improved line and load rejection characteristics. Boards measure 1.875 x 3.125 in (47.63 x 79.38 mm) and are available with or without enclosures, while enclosures are available with or without flanges. Extended input range down to 4 V is available.