This part is a kind of semiconductor called SDR-120.

Function of this product has 120W Single Output Industrial DIN RAIL.

Manufacturers : Mean Well

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120W Single Output Industrial DIN RAIL with PFC Function Features : SDR-120 series High efficiency 91% and low power dissipation 150% peak load capability Built-in active PFC function, PF>0.93 Protections: Short circuit / Overload / Over voltage / Over temperature Cooling by free air convection Can be installed on DIN rail TS-35/7.5 or 15 UL 508 (industrial control equipment) approved EN61000-6-2(EN50082-2) industrial immunity level Built-in DC OK relay contact 100% full load burn-in test 3 years warranty SE PQ M IF 47 GL SDR-120-48 48V 2.5A 0 ~ 2.5A 120W 3.75A 120mVp-p 48 ~ 55V 1.0% 0.5% 1.0% SPECIFICATION MODEL DC VOLTAGE RATED CURRENT CURRENT RANGE RATED POWER PEAK CURRENT PEAK POWER Note.6 OUTPUT VOLTAGE ADJ. RANGE LINE REGULATION LOAD REGULATION SETUP, RISE TIME HOLD UP TIME (T [ ... ]

SDR-120 PDF Datasheet Download