Power Electronics

Broad Range of EMI Filters

TDK-Lambda has introduced a new broad range of high performance EMI (Electromagnetic Interference) filters. The new R series filters provide a wide range of electrical noise attenuation curves in metal cases with convenient connection options. These low profile units enable system designers to avoid compromising the filter's mechanical compatibility and electrical performance with the design of the OEM equipment.

The filters are available in both single-phase and three-phase versions. The current ratings for the single-phase units range from 0.5A up to 300A, with line voltages up to 250VAC or 250VDC and leakage currents of 1mA. Low leakage models are available with 10µA of leakage current at 250VAC, 60Hz. The three-phase R series filters have current ratings from 6A up to 1000A, with line voltages up to 500VAC or 500VDC. The maximum leakage current is 2.5mA at 250VAC, 60Hz or 5mA at 500VAC, 60Hz.

For ease of installation, many of the models can be ordered with wire leads, lug terminals, or captive screw terminals. The user has a choice of either standard chassis mount or DIN Rail Mount on many filter models rated up to 30A (with screw terminals).

Single-phase filters are safety certified to UL1283, CSA C22.2 No. 8, and EN60939 (up to 30A). Three-phase filters are safety certified to UL1283 (up to 150A) and EN60939 (up to 300A). The operating temperature range is from -25°C to +85°C.

Within the R series, either single-stage or two-stage EMI filters are available to provide standard or very high noise attenuation levels, from 150kHz up to 30MHz. In addition, "high pulse attenuation" is available on some models to prevent line "spikes"from entering or leaving the OEM equipment.All units are RoHS compliant and include TDK-Lambda's one year warranty.

The R series EMI filters are available now, priced from $7.50 each in 100-unit quantities.

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