Tracopower tes 2n series 2w dc dc converters tracopower tes 2n 1221 these tracopower tes 2n series dc dc converters have a low profile smd package wide 21 input range input filter to en 55022 class a and fcc level a continuous short circuit protected and are suitable for use wherever isolated tightly regulated voltages are required tracopower tes 2n 1221 2w dc dc converter 9 18v dc in 5v dc 200ma out