CUI Inc – PBK Series: Compact SIP AC-DC Power Supply Now Available in Low Profile Versions

CUI Inc has extended its PBK series of compact single inline pin (SIP) AC-DC power supplies to include right-angle versions. The low profile PBK-B family is available in 1W, 3W and 5W configurations.

The smallest version, the 1W PBK-1-B power module, measures just 35 x 25 x 13mm. The modules’ small size makes them ideally suited to on-board AC-DC power conversion in designs in which board space is limited.

The high density PBK-B series is offered in single output voltages of 3.3V, 5V, 9V, 12V, 15V and 24V, and can operate from AC input voltages ranging between 85V and 264V. For high voltage DC-DC applications, the modules also provide a DC input range spanning 100V to 400V.

All models are designed for 3,000V AC/1 minute input-to-output isolation and have over-current and continuous short circuit protection. The modules can function across a wide operating temperature range from -40°C to +85°C (the 1W PBK-1-B and the 3W PBK-3-B) and -25°C to +85°C (the 5W PBK-5-B).

The low profile PBK-B series meets the requirements of internationally recognized UL 60950-1/EN 60950-1 standards and complies with EN55022 Class B limits for conducted and radiated electromagnetic emissions, with few additional external components required.


  • Universal input-voltage range
  • Low profile right-angle SIP package
  • Low no-load power consumption

  • Automation equipment
  • Industrial systems
  • Security systems
  • Telecom equipment