Power adapter/inverter MEAN WELL RDDW20H-12, 20 W, input 43–160 V, output 12 V, RoHS

MEAN WELL RDDW20H-12 is a compact DC-DC railway dual-output converter designed for demanding industrial and vehicle power systems. It accepts a wide input range of 43–160 VDC and provides regulated ±12 V outputs with a combined power rating of 20 W, in a DIP through-hole package with remote ON/OFF and 3 kVDC input-to-output isolation.

Advantages

The RDDW20H-12 offers wide input voltage tolerance (43–160 VDC) and dual ±12 V outputs that deliver stable low-voltage power for control electronics. Its small size (50.8 mm depth) and light weight (35 g) simplify integration into space-constrained assemblies. The device provides 3 kVDC isolation between input and output and includes a remote ON/OFF feature for system control. RoHS compliance ensures compatibility with environmental and regulatory requirements.

Suitable for (tasks / use cases)

• Railway and rolling-stock electronics requiring isolated DC-DC conversion
• Industrial control systems and automation equipment
• Vehicle and mobile power systems with wide DC input ranges
• Powering sensors, instrumentation and low-voltage control circuits

Key specifications

• Manufacturer: MEAN WELL, model RDDW20H-12 (MPN: RDDW20H-12)
• Input voltage: 43–160 VDC
• Output: ±12 VDC at ±1.833 A (total 20 W)
• Isolation: 3 kVDC input-to-output
• Package: DIP through-hole
• Features: Remote ON/OFF
• Compliance: RoHS
• Dimensions / weight: depth 50.8 mm, weight 35 g
• Pack quantity: 300 pcs

How to use

Mount the RDDW20H-12 into a suitable PCB using the DIP through-hole pins and follow manufacturer guidelines for spacing and thermal management. Connect the DC input within the specified 43–160 VDC range, verify polarity, and wire the ±12 V outputs to the load ensuring the total output power does not exceed 20 W. Use the remote ON/OFF control according to the wiring diagram in the product datasheet to enable or disable the outputs from the system controller.

Recommendations

Ensure proper board layout and spacing to maintain the 3 kVDC isolation rating; provide adequate cooling or airflow when operating near maximum load, and avoid exceeding the input voltage range. Refer to the MEAN WELL RDDW20H-12 datasheet for detailed electrical characteristics, pin assignments and recommended application circuits.