The URB4812YMD-15WR3 is a premium, single-output 15W DC/DC Converter engineered for the most demanding applications, including railway, industrial control, and telecommunications. This high-reliability module features an ultra-wide 4:1 input voltage range (typically 18-75VDC for a 48V nominal system), ensuring exceptional stability and performance even in the presence of severe input voltage fluctuations. It delivers a precisely regulated 12VDC output with a maximum current of 1250 milliamperes (1.25A).

Designed for extreme environments, the URB4812YMD-15WR3 boasts an exceptional operating ambient temperature range of -40 to +105 . Its high efficiency, up to 91%, minimises heat generation and power loss, contributing to its outstanding reliability and long lifespan. Safety and compliance are paramount: the converter features an I/O isolation test voltage of 1500VDC and meets the stringent EN50155 railway standard. Furthermore, it achieves CISPR32/EN55032 CLASS A EMI compliance without the need for external components, simplifying design and reducing system cost. Comprehensive protection includes input under-voltage protection (UVP), output short-circuit (SCP), over-current (OCP), and over-voltage protection (OVP).

Key Features:

• Ultra-Wide Input Range: 4:1 input voltage ratio (typically 18-75VDC) for 48V systems.
• High Efficiency: Up to 91% efficiency reduces heat and power consumption.
• Extreme Temperature Range: Operates reliably from -40 to +105 .
• Railway Certified: Meets the stringent EN50155 standard.
• EMI Compliance: CISPR32/EN55032 CLASS A compliant without external components.
• High Isolation: 1500VDC I/O isolation test voltage.
• Comprehensive Protection: Includes Input UVP, Output SCP, OCP, and OVP.
• Reverse Polarity Protection: Available on A2S and A4S mounting versions.

Specifications:

• Device Type: DC/DC Converter
• Type: Single Output, Metal Shielded Package
• Max Power: 15W
• Nominal Input Voltage (VI): 48VDC
• Input Voltage Range: Ultra-wide 4:1 (Inferred: 18-75VDC)
• Output Voltage (VO): 12VDC
• Output Current: 1250mA (1.25A)
• Efficiency: Up to 91%
• Isolation Voltage: 1500VDC
• Operating Ambient Temperature: -40 to +105
• Protection: Input UVP, Output SCP, OCP, OVP
• Compliance: EN50155, CISPR32/EN55032 CLASS A

The URB4812YMD-15WR3 is the definitive power solution for engineers seeking a high-power, high-temperature, and certified DC/DC converter for mission-critical railway and industrial applications.

What's in the box
1 x URB4812YMD-15WR3: 15W DC/DC Converter, 4:1 Input, 12V Out, Railway Grade