TDK Lambda Americas Inc
TDK World Wide


March 15, 2004 Editor Contacts:
Stan Michelson, Focus Communications

Lambda Adds 200% Peak Power-Capable Power Supplies

SAN DIEGO, CA (March 15, 2004) - Lambda has introduced two power supply series that can deliver 200% of the nominal current rating for up to 10 seconds. The new 150-watt ZWS150PAF and 240-watt ZWS240PAF series are ideal for powering motors and printers where a peak current demand is needed for a short duration.

Both series accept a wide range of input voltage – from 85 to 265 VAC – and contain active PFC (power factor correction) circuitry to meet EN61000-3-2 standards. The units are available with 24-, 36- or 48-volt outputs and with peak output powers of up to 480 watts.

The ZWS150PAF can deliver a continuous 150-watt convection cooled at 50°C, or 200 watts with forced-air cooling at 1.5 meters per second. The ZWS240PAF yields 240 watts convection or 300 watts with forced air.

Three different mechanical configurations are offered – open frame, L bracket, or fully enclosed – with the units measuring a compact 3.15 x 1.57 x 8.2 inches (150-watt series) and 3.7 x 1.77 x 8.74 inches (240-watt series) in the open-frame package. The supplies are available with Molex, JST or screw-terminal connections.

Both series meet Class B EMI standards – radiated and conducted – with a low earth leakage current of 0.22 milliamps at 230 VAC, 60 Hz. The new power supplies are safety approved to UL60950, CSA60950, EN60950, EN50178 specifications and are CE marked. They also meet EN61000-4-X immunity standards.

The ZWS150PAF and ZWS240PAF are available now, with prices starting at $120 in single-unit quantities. More information can be obtained at Lambda’s Web site,

For more than 50 years, Lambda has been a leading provider of standard and custom power supply solutions. The company's broad range of products power industrial, telecommunications, datacom, medical, and test-and-measurement applications worldwide. Lambda's corporate headquarters is at 3055 Del Sol Blvd., San Diego, Calif., 92154; telephone 800-LAMBDA4 (toll free) or 619-575-4400; fax 619-429-1011.

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