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TDK-Lambda UK has extended its ZWS-BAF series of PCB-type AC/DC power supplies by adding two lower-power models, suitable for use in factory automation, test and measurement and LED signage.

The 50W ZWS50BAF and 75W ZWS75BAF are designed to combine high efficiency at low-load conditions with a wide operating temperature range, small size and up to 10 years of electrolytic capacitor life.

As with all models in the ZWS-BAF series, the new low-power models have active power factor correction (PFC) and high-input transient and surge protection to IEC61000-4-4,5.

They operate from a universal input of 85-265VAC or 120-370VDC, making them suitable for a wide range of applications, including factory automation, test and measurement and LED signage.

Offered with a choice of output voltages from 3.3V to 48V, each model in the ZWS-BAF series can be adjusted by up to +/-10 per cent of its nominal voltage to accommodate non-standard system voltages.

Small in size and offering an efficiency of up to 88 per cent, all models in the ZWS-BAF series feature an operating temperature range of -10C to 70C, allowing 100 per cent load operation in a 50C environment.

Standard features include over-current and over-voltage protection circuitry, while an optional remote on/off is also available.

With active PFC that meets EN61000-3-2, the ZWS-BAF models have a 3kVAC input-to-output isolation and meet conducted and radiated EMC conforming to EN55011/EN55022-B, FCC-B, VCCI-B.

They are delivered with TDK-Lambda’s five-year warranty, are safety approved to UL/CSA/EN60950-1 and EN50178 and carry the CE mark, according to the LV Directive.

TDK-Lambda is a subsidiary of the TDK Corporation, a leading global electronics company (

TDK-Lambda has been a major provider of power supplies for over 60 years.  The company designs and manufactures a wide range of AC-DC Power Supplies and DC-DC Converters for Industrial, Medical, Telecom, Datacom, and Test & Measurement applications worldwide.

With production facilities in Asia, America and EMEA, TDK-Lambda has positioned itself as one of the world’s largest manufacturers of power conversion products with recognized leadership in the
industrial market segment.

With our comprehensive 1.5W to 90kW range of AC/DC power supplies, DC/DC converters, Programmable DC power supplies and EMI noise filters, TDK-Lambda offers the right solution for a wide spectrum of applications.

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