MEAN WELL SD-50A-12 DC-DC-converter 12V 4,2A 50,4W chassis-montage

Delivering 50.4 watts of clean, regulated 12 VDC output from a 9.2–18 VDC input, the MEAN WELL SD-50A-12 is a high-efficiency DC-DC converter built for demanding industrial and automotive applications. Its 80% efficiency and free-air convection cooling ensure reliable operation without forced airflow, while the rugged metal case and chassis-mount design simplify integration.

Overview

The SD-50A-12 is part of MEAN WELL's SD-50A series, engineered to provide stable power conversion in environments where DC input is available but a regulated 12V rail is required. With a wide input range, it accommodates 12V battery systems, vehicle electrical systems, and other DC sources. The converter delivers up to 4.2A of output current, making it suitable for powering sensors, controllers, motors, and communication equipment.

What stands out

• Wide 9.2–18 VDC input range for flexible DC source compatibility
• High efficiency up to 80%, minimizing heat generation
• Comprehensive protections: short circuit, overload, and over voltage
• 1500 VDC input-output isolation for enhanced safety
• Compact metal case with chassis mounting for easy installation
• Certified to UL, CUL, TUV, and CE standards

Technical details

• Output voltage: 12 VDC
• Output current: 4.2 A
• Output power: 50.4 W
• Ripple & noise: 120 mVp-p
• Line regulation: ±0.5%
• Load regulation: ±1.0%
• Operating temperature: -10°C to +60°C
• Cooling: Free air convection
• MTBF: >200,000 hours
• Housing: Metal case

Our verdict

The MEAN WELL SD-50A-12 is a robust and dependable DC-DC converter that excels in harsh conditions. Its wide input range, full protection suite, and industrial certifications make it an excellent choice for engineers seeking a reliable power solution without compromise.