Chiseled for use in cellular infrastructure and RF amplifier designs, the HBA48T12280 350W half-brick dc/dc converter exhibits an efficiency that equals or exceeds 90% for loading conditions ranging from 40% to 100%. Its trim range enables a wide output from 21 to 33 Vdc. Additional features include a 36 to 75 Vdc input range, -40°C to +100°C operating temperature range, the ability to withstand a 100V input transient for 100 ms, ability to start-up into pre-biased loads, and an on-board input differential LC filter. POWER-ONE INC., Camarillo, CA. (866) 969-3438.