Capcon International makes several EMI noise filters, including low pass filters and miniature sized component filters as well as microwave absorbers and other absorbative filters. Their minuature models filter either AC or DC power lines for up to 10 Amps at 50VDCW, 100VDCW, or 115VACW. Capcon also offers military grade filters.

Captor makes several noise filters including EMI filters and telephone and signal line filters, which can be made to military grade specifications.  Their signal line filters pass band at <3 dB at 4kHz to <0.5 dB at 0-1kHz on VAC or VDC lines while their EMI filters offer several termination interfaces including threaded terminals, solder terminals, connectors (commercial, military grade, IEC, many more), and wire leads & harnesses.

Cosel makes component sized Din rail mountable AC and DC (±50 VDC) noise filters with a rated current from 1 to 30 amps, single phase (250 V) and three phase models (500V).

DJM Electronics makes several RFI/EMI filters including power line, facility, and signal line filters as well as custom filters, running on AC or DC lines. Their power line filters have a current rating of 10 to 250 Amps, while their standard facility filters have a rating of 2X5 amps to 4x300 amps.

Filter Concepts makes many EMI filters including AC filters, DC filters, three phase filters, and Custom filters, with applications including medical, motion control, or military spec ground equipment. Their high performance three phase filters have either 16A/PH or 24A/PH rating with leakage of 1.8mA, while their high performance switch mode EMI filter (AC) has current ratings from 1.5A to 45.0A with leakage from .45mA to 1.5mA.

MTE makes single and three phase EMI/RFI filters, including LC filters, operating at 50/60Hz in ratings up to 600 volts with applications including AC and DC motor drives, and Active Harmonic Filters.

Okaya makes single phase and three phase EMI/RFI noise filters for AC power lines with single phase voltage ratings of 250VAC, 500VAC, 125VAC, and 2VAC with a current range of 1-300Amp, while the three-phase models voltage ratings of 250VAC, 500VAC, 460VAC, and current range from 5-700Amp.

PA&E makes ceramic EMI/RFI filters for use in electronic packaging including microwave high-frequency packages, a flexible leaded filter with a rated voltage from 50 - 500VDC and a rated current of 5 Amperes, and broadband low-pass filters with insertion-loss of 20, 40, or 60dB/decade with voltage ratings from 50 VDC to 240 VAC and current ratings of .10Amp to 50Amp. Applications include microwave filtering, medical grade, and military specifications.

Tusonic makes a wide line of EMI/RFI filters including both AC and DC line models, surface-mount filters, feed-through filters, and custom filters. Other EMC products carried include ceramic variable trimmer capacitors, and radial leaded disc, tubular, and WEECON Plate capacitors.