HM28-24009LF

Voltage Rating - AC:	250V
Package / Case:	Vertical, 4 PC Pin
Height (Max):	0.906" (23.00mm)
Size / Dimension:	0.866" L x 0.669" W (22.00mm x 17.00mm)
Mounting Type:	Through Hole
Features:	--
Approvals:	--
Ratings:	--
Operating Temperature:	--
Series:	HM28
Voltage Rating - DC:	--
DC Resistance (DCR) (Max):	250 mOhm
Current Rating (Max):	900mA
Inductance @ Frequency:	1.1mH @ 1kHz
Number of Lines:	2
Filter Type:	--
Part Status:	Discontinued at Digi-Key
Packaging:	Bulk

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Common Mode ChokesCommon mode chokes (CMC) are used in electronic circuits, primarily as filters for the suppression of common-mode EMI/RFI noise on transmission lines and power systems. CMCs work by providing a high impedance for common-mode noise signals while allowing desired differential signals to pass with minimal attenuation. They are useful in a wide range of applications, including data communications, motor drives, and medical electronics among others.The HM28-24009LF CMC is a common mode filter with an input/output impedance of 250Ω at 100kHz. It is designed to reduce EMI and RFI at frequencies up to 1GHz while providing high differential impedance and low insertion loss.The HM28-24009LF CMC is well suited for applications such as Ethernet systems, brushless motor drives, or any system where high-frequency common-mode noise is present. Its low capacitance enables it to work in high-speed digital circuits with minimal added distortion or signal-degradation. Its RoHS-compliant construction and high temperature rating make it a suitable choice for high-reliability applications. The HM28-24009LF CMC works by providing a high impedance for common-mode signals while allowing desired differential signals to pass with minimal attenuation. It consists of two windings around a common core, which is designed to introduce a physical barrier to common-mode noise. The common-mode signal is then filtered to reduce its amplitude before being grounded. This effectively limits the current through the filter to prevent EMI/RFI from propagating through the system.The HM28-24009LF CMC is a well-rounded solution for high-frequency common-mode noise suppression. Its small size, high temperature rating, and low insertion loss make it suitable for a wide range of applications. Its RoHS-compliant construction is an added bonus, ensuring reliable performance in harsh environments.

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