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Choke, Common Mode, 14 mΩ, 33.7 μH – TDK ACM

TDK
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  • Inductance 33.7 μHSeries ACM
  • Impedance 14 mΩ
  • Maximum Current 6A
  • Rated voltage 50 V

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https://uk.rs-online.com/web/p/emi-rfi-inductor-components/9164119/

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Choke, Common Mode, 14 mΩ, 33.7 μH – TDK ACM

What is a Common Mode Choke?
A common mode choke is an electrical filter that blocks high frequency noise common to two or more data or power lines while allowing the desired DC or low-frequency signal to pass. Common mode (CM) noise current is typically radiated from sources such as unwanted radio signals, unshielded electronics, inverters and motors. Left unfiltered, this noise presents interference problems in electronics and electrical circuits.

How do Common Mode Chokes Work?
In normal or differential mode (single choke), current travels on one line in one direction from the source to the load, and in the opposite direction on the return line that completes the circuit. In common mode, the noise current travels on both lines in the same direction.
Common mode chokes have the two or more windings arranged such that the common mode current creates a magnetic field that opposes any increase in common mode current. This is similar to how single line (differential) inductors function. Inductors create magnetic fields that oppose changes in current
In common mode, the current in a group of lines travels in the same direction so the combined magnetic flux adds to create an opposing field to block the noise, as illustrated by the red and green arrows in the toroid core shown in Figure 1. In differential mode, the current travels in opposite directions and the flux subtracts or cancels out so that the field does not oppose the normal mode signal.

Differential Interference
With differential interference, what occurs through the device is that for any signal transmission from the line side, there should be an equal return on the neutral side. Whatever is crossing from your line (or the topside) back through the neutral (bottom side), should be cross-canceling. What is happening is that you’re not going to get any unwanted noise in a differential mode if there is equal signal cancellation. When these types of transmissions are not balanced and cancelling, there will be the occurrence of differential noise.

Part name Common Mode
Impedance (Ω) [at 100 MHz] typ.		 DC resistance (mΩ) max. Rated current (A) max. Dimensions (mm)
ACM3225-601-2P 600 200 1 W. 2.5    H. 2.3    L. 3.2
ACM4532-601-2P 600 100 1.5 W. 3.2    H. 2.3    L. 4.5
ACM4532-801-2P 800 100 1 W. 3.2    H. 2.3    L. 4.5
ACM7060-301-2PL 300 10 5 W. 6.0    H. 3.5    L. 7.0
ACM7060-701-2PL 700 15 4 W. 6.0    H. 3.5    L. 7.0
ACM9070-701-2PL 700 10 5 W. 7.0    H. 4.5    L. 9.0
ACM1211-701-2PL 700 6 8 W. 11.0    H. 6.0    L. 12.0
ACM1211-102-2PL 1000 14 6 W. 11.0    H. 6.0    L. 12.0
ACM1513-551-2PL 550 4 10 W. 13.0    H. 6.0    L. 15.0

Large-Current Wirewound Chip Common Mode Filter
Common Mode Filter ACM3225/4532/7060/9070/1211/1513

Documentation

DATASHEET-TDK-ACM-Common-Mode-Choke-14-mΩ

SKU: 09080TR03C02 Categories: , , Tag:
Dimensions 1.2 × 1.1 × 0.6 cm
Brand

Pack Of

2
Voltage

50V
Minimum Operating Temperature: -40°C
Maximum Operating Temperature: +85°C
Package/Case: 1211
Inductance: 33.7 μH
Impedance: 14 mΩ
Maximum Current: 6A
Supports up to: 10A
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