| Allicdata Part #: | PLK1251-ND |
| Manufacturer Part#: |
ELF-18D270J |
| Price: | $ 1.40 |
| Product Category: | Filters |
| Manufacturer: | Panasonic Electronic Components |
| Short Description: | COMMON MODE CHOKE 300MA 2LN TH |
| More Detail: | 2 Line Common Mode Choke Through Hole 300mA DCR 2... |
| DataSheet: |  ELF-18D270J Datasheet/PDF |
| Quantity: | 476 |
| 1 +: | $ 1.27260 |
| 10 +: | $ 1.22850 |
| 25 +: | $ 0.90090 |
| 50 +: | $ 0.88049 |
| 100 +: | $ 0.85995 |
| 250 +: | $ 0.77805 |
| Voltage Rating - AC: | -- |
| Package / Case: | Vertical, 4 PC Pin |
| Height (Max): | 0.787" (20.00mm) |
| Size / Dimension: | 0.787" L x 0.827" W (20.00mm x 21.00mm) |
| Mounting Type: | Through Hole |
| Features: | -- |
| Approvals: | -- |
| Ratings: | -- |
| Operating Temperature: | -- |
| Series: | H |
| Voltage Rating - DC: | -- |
| DC Resistance (DCR) (Max): | 2.691 Ohm (Typ) |
| Current Rating (Max): | 300mA |
| Number of Lines: | 2 |
| Filter Type: | -- |
| Part Status: | Obsolete |
| Packaging: | Bulk |
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Common Mode Chokes (CMCs) are an important component of many electronic circuits which reduce common mode interference. The ELF-18D270J is a type of surface mounted Common Mode choke, designed to reduce common mode associated noise and RFI/EMI interference.
The ELF-18D270J is primarily used in the filtering of Switch mode power supplies, such as dc/dc converters and ac/dc transformers. It is also used in other power supplies, such as Atx power supplies, notebook adapters, and automotive applications. In addition, the ELF-18D270J is widely used in the audio/video, telecom, industrial automation, and medical electronics industries.
The ELF-18D270J is a two-phase choke, designed to provide high-frequency common mode noise filtration. It is a Surface Mount Device (SMD) with a standard EIA-124 footprint. The inductor windings are separated, to reduce crosstalk and magnetic interference. The ELF-18D270J is designed to meet the requirements of UL, CSA, EN and VDE certifications.
The ELF-18D270J’s peak current rating is 270mA, which is greater than other standard CMC products. The saturation current rating is 2A, and the alternating leakage current through the core is 1mA. The inductance range is 2.4-3.3uH, with an impedance of 20-100Ohms, at 1KHz. The rated power dissipation of the ELF-18D270J is up to 11W. The operating temperature range is -40°C to +85°C.
In operation, the ELF-18D270J works to reduce common mode noise by suppressing the flow of the noise current. This is achieved by the inductance effect of the windings, which causes an opposing back-emf for the incoming noise, resulting in a reduction of noise current. This process works across a wide frequency range, from low frequencies (eg. 50/60Hz) to high frequencies (eg. 1MHz).
The ELF-18D270J is also designed to reduce the transfer of EMI/RFI noise. The device features ferrite EMI/RFI absorbers which absorb electromagnetic radiation, reducing the propagation of interference to other circuits or components. This is achieved by the use of ferrite cores and other ferromagnetic shielding elements.
In conclusion, the ELF-18D270J is a high-performance CMC which is designed to reduce common mode and EMI/RFI noise in a variety of different applications. Due to its high blocking and saturation current ratings, the ELF-18D270J is suitable for smps, automotive, industrial, telecom and other applications. In addition, its wide operating temperature range and UL/CSA/EN/VDE certifications make it a suitable choice for a variety of applications.
The specific data is subject to PDF, and the above content is for reference
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