TDK-Lambda KAS4-9 Switching Power Supply 9V DC 4W 440mA PCB Mount Taiwan KAS4-9

TDK-Lambda KAS4-9 is a switching power supply designed for reliable 9V DC output at 4W power, delivering an output current of 440mA. This compact unit is built for a wide temperature operating range between -40°C minimum and 70°C maximum, suitable for demanding domestic and industrial applications.

The power supply supports a wide AC input voltage range of 90 to 305 VAC and DC input voltage range from 120 to 370 V DC, allowing global usability. Its encapsulated PCB mount format enables easy integration without the need for a ground connection, as it features Class II insulation.

With physical dimensions of 37mm in length, 27.5mm in width, and 17.5mm in depth and weighing only 26 grams, it offers a low-profile solution with rapid on-board integration capability. Efficiency is rated at 75%, and it boasts low off-load power consumption less than 0.3W, promoting energy savings.

The unit complies with an extensive range of EMC and safety standards, including CE certification, EN 55011, EN 55022-B electromagnetic compatibility standards, IEC/UL/CSA/EN 62368-1 safety approval, and several immunity standards such as EN 61000 series and FCC Class B. It does not require a protective earth connection under Class II construction.

This power supply series is ideal for a variety of professional industrial, laboratory, commercial, and domestic applications requiring a compact, efficient, and reliable low-power switching power source.

Provides a maximum output voltage of 9V DC and output current of 440mA. Designed to operate over a wide temperature range from -40°C to 70°C. Supports input voltages ranging from 90 to 305 VAC and 120 to 370 V DC for global use.

Compact dimensions measuring 37mm length, 27.5mm width, and 17.5mm depth enable easy integration. Achieves 75% efficiency with low off-load power consumption below 0.3W. Meets CE and multiple EMC and safety standards including IEC/UL/CSA/EN 62368-1.

Class II construction requiring no ground connection, suitable for domestic and industrial applications. Encapsulated board mount design allows easy rapid on-board integration. Lightweight at 26 grams, suitable for various professional industrial use cases.

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