Recom Power introduces new RPA40-FR series of rugged, board-mount DC/DC converters in a 2“ x 1” x 0.4” (50.8 x 25.4 x 10.2mm) through-pin package ideal for railway applications with an input range of 36 - 160 V_DC (200 V/1 second). Nominal input voltages of 72 V, 96 V, and 110 V are covered with tolerances, dips, and surges while the output selection is 5 V, 5.1 V, 12 V, 15 V, 24 V, +/-12 V, or +/-15 V, with the single outputs trimmable by +/-10% minimum (15 and 24 V models are trimmable to +20/-10%).

Efficiency for the series peaks at 90%, so that full load output is possible to high ambient temperatures with natural convection cooling only, while advanced thermal design further allows the operation to an ambient of 105°C with load derating and/or airflow.

No minimum load is required, and comprehensive protection is provided against over-temperature, input under-voltage, output over-current, and short circuits. A control pin is also provided.

The products hold safety certifications to UL/EN/IEC 62368-1, EN 45545-2, and EN 50155, with an isolation rating of 3 kV_AC/1 min (reinforced). EN 55032 class A EMC specification is met without external components while class B can be met with the addition of a simple filter. MTBF for the parts is 1.25 MHrs according to MIL-HDBK 217-F (GB/25°C) and the robust, conservative design, along with encapsulation, makes the RPA40-FR series perfect for the harsh railway environment. The parts are also ideal for general industrial applications where surge voltages and high temperatures might be encountered.

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