Gallery View: SMD, DIP EMI filters from China

Shaanxi Shinhom Enterprise Co. Ltd offers the SF0503 Series of SMD EMI line filters that are based on a ferrite core and are for up to 1,000MHz applications such as data and signal lines. The units have 100A typical rated current, 450 to 1,400ohm minimum impedance, and 0.13 to 0.24ohm typical and 0.18 to 0.32ohm maximum DC resistance per winding.

The components use class F enameled copper wire, and has a UL94V-0-rated liquid crystal polymer base and terminals with copper, nickel or tin plating. Epoxy resin is adopted as adhesive. The operating and storage temperatures are -40 to 105 C and -40 to 125 C. At rated current, the maximum temperature rise is 25 C. The filters can withstand soldering at 260 C for 10 sec. They come in 500-unit tape and reel packaging. Bulk packaging for smaller quantities is accepted.

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Model T4532-351 LAN chip transformer from Shaanxi Shinhom Enterprise Co. Ltd has 350µH typical inductance at 100kHz, 0.1V, 8mA DC bias and 35pF typical capacitance. Turns ratio is 1:1 at 100kHz.

The UL94V-0-rated unit has 11.5dB maximum insertion loss at 1 to 100MHz, while the minimum return loss is -18dB at 1 to 40MHz, 14dB at 50MHz, -12.5dB at 60MHz, -11.2dB at 70MHz, -10dB at 80MHz and -8dB at 100MHz. It operates in -0 to 70 C and stores in -40 to 85 C. Solderability of leads meets MIL-STD-202.

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This EMI filter from Tianchang Fuan Electronic Co. Ltd, CCF15 model, has 250VAC/DC rated voltage and 2,000VAC/60sec or 2,400V/1 to 2sec withstand voltage. The minimum insulation resistance is 100Mohm at 500VDC. The 6.5g unit has -40 to 120 C operating temperature.

The minimum order is 10,000 units for delivery within 15 days.

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Tianchang Fuan Electronic Co. Ltd's other EMI filter, CCF19 model, weighs 13g but has the same specifications of 250VAC/DC rated voltage, 2,000VAC/60sec or 2,400V/1 to 2sec withstand voltage and 100Mohm minimum insulation resistance at 500VDC. It operates in -40 to 120 C.

The minimum order is 10,000 units for delivery within 15 days.

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The XP-EMI-002 model from XP Power Electronics Co. Ltd is an EMI filter with an IEC connector and can have a fuse installed. Its rated voltage is 250VAC, operating frequency 50/60Hz and rated current 0.5 to 15A.

The unit is subjected to 1,500VDC line-to-line test voltage and 1,800VAC line-to-ground. It is for mini electronic equipment, measuring instruments and power supplies.

The maker requires an order of at least 500 units. Delivery lead time is 10 days.

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With industry-standard footprint and pinout, XP Power Electronics Co. Ltd's model XP-EMI-PCB600 EMI filter suits power supplies, computers and communication equipment. It carries RoHS, VDE 0805 and UL/cUL 60950 approval.

The 500-unit minimum order is delivered within 10 days.

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