DC-DC converter, 9-18V to 9V, 555mA

The VRB1209YMD-5WR3 is a high-efficiency 5W isolated DC-DC converter designed to convert 9–18V DC to a stable 9V DC output. With galvanic isolation, protections, and a wide operating temperature range, it is ideal for use in industrial, communication, and measurement applications.

Technical specifications

• Model: VRB1209YMD-5WR3
• Input voltage: 9–18V DC (nominal 12V)
• Output voltage: 9V DC
• Output current: 555mA
• Power: 5W
• Efficiency: up to 84% (typ.)
• Insulation voltage: 1500V DC
• Operating temperature range: –40 °C to +85 °C
• Start-up time: < 100 ms
• Standby consumption: < 0.3 W
• Case type: DIP for PCB mounting
• Dimensions: approx. 25.4 × 25.4 × 11 mm
• Protection: IP65 – dust and moisture resistant

Functions and features

• Wide input range (2:1) for universal use
• Stable 9V DC output voltage with low ripple
• Galvanic isolation of input and output (1500V DC)
• Short circuit, overload and overvoltage protection with automatic recovery
• High efficiency and low heat loss
• Suitable for industrial and built-in applications

Ideal for

• Power supply for sensors, measuring and communication modules
• Arduino, STM32, ESP and other microcontrollers
• Industrial control units and PLC systems
• Electronics requiring a stable 9V power supply with galvanic isolation

Package contents

• 1× DC-DC converter VRB1209YMD-5WR3 (5W, 9–18V → 9V)

Why choose this product?

• High reliability and long service life
• Stable output voltage and low interference
• Compact dimensions and easy installation
• Safe galvanic isolation for device protection
• Ideal replacement for Hi-Link HLK-5D1209 or similar DC-DC modules