Miniature SIP AC-DC Power Supplies maximize board space.

Press Release Summary:

Measuring 1.38 x 0.43 x 0.94 in., PBK SIP Series includes 1, 3, and 5 W models with single output voltages of 3.3, 5, 9, 12, 15, and 24 Vdc. Units operate at input voltages of 85~264 Vac and also support input range of 100~400 Vdc for high voltage DC-DC applications. All models are designed for 3,000 Vac/1 min input to output isolation, have over current and continuous short circuit protection, and can operate from -40 to +85°C (1 W and 3 W) and -25 to +85°C (5 W) for challenging environments.

Original Press Release:

Miniature SIP Ac-Dc Power Supplies Maximize Board Space

TUALATIN, Ore. — Today, CUI Inc launched their smallest ac-dc power supplies yet with the release of the PBK ultra-compact SIP series. Available in 1 W, 3 W, and 5 W families, the modules measure as small as 1.38 x 0.43 x 0.94 in. (35 x 11 x 24 mm), occupying less pcb real-estate than other conventional ac-dc power supplies, thus allowing designers to fully maximize space where on-board ac-dc power conversion is required.

The high density PBK series is offered in single output voltages of 3.3, 5, 9, 12, 15, and 24 Vdc and can operate at ac input voltages between 85~264 Vac.  For high voltage dc-dc applications, the modules also provide a dc input range spanning 100~400 Vdc. All models are designed for 3,000 Vac/1 Min input to output isolation, have over current and continuous short circuit protection, and can function at a wide operating range from -40 to +85°C (1W and 3W) and -25 to +85°C (5W) for use in challenging environments.

The SIP packaged PBK series meets internationally recognized UL 60950-1/EN 60950-1 standards and complies with EN55022 Class B limits for conducted and radiated EMC with few additional external components.  They are ideally suited for a range of applications including automation systems, industrial systems, and telecommunication equipment.

The PBK Series is available through distribution starting at $9.00 for 100 pieces. Please contact CUI for OEM pricing.


Product name: PBK-1, PBK-3, PBK-5

Availability: 4-6 weeks production

Possible users: Automation, industrial systems, telecommunications

Primary features: Ultra-compact package, -40 to +85°C /-25 to +85°C operating temperature range

Cost: $9.00 per unit through distribution in 100 piece quantities

View details for the PBK-1 Series

View details for the PBK-3 Series

View details for the PBK-5  Series

About CUI Inc

CUI Inc is a technology company focused on the development and distribution of electronic components. At the leading edge of power supply design, the organization supports customers as they strive to improve the energy efficiency and environmental credentials of their application.  The company's power group is complemented by a portfolio of world-class board level components, consisting of interconnect, sound, motion control and thermal products.  An unwavering commitment to create collaborative partnerships with customers and a drive to see that their design project is a success has been a hallmark of CUI's sustained growth since its founding in 1989.   As a leader in the industry, CUI will continue to invest in the future through new technologies, talented employees, expanded manufacturing capabilities, and a growing global reach.

CUI Inc is a subsidiary of CUI Global, Inc., a publicly traded company whose common stock trades on the NASDAQ Exchange under the symbol CUI.

Media contacts


Maggie Lefor

+1 503 612 2300

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