ACH4518-223-TD01 Filters

Electromagnetic interference (EMI) and Radio Frequency interference (RFI) cause major disturbance and disruption to everyday electronic devices. In order to prevent and reduce these disruptive signals, EMI/RFI filters (LC, RC Networks) are used to filter out unwanted high frequency noise, low frequencies, and provide effective shielding of the electromagnetic fields. The ACH4518-223-TD01 is one example of a high quality filter employed for this purpose.

This filter is a two coupling three-type electrical filter, which consists of two-coupled inductors with serial capacitors. It is capable of achieving high attenuation in High Frequency (HF) from 0.1MHz-1GHz, providing outstanding protection from unwanted disturbances. Starting with the core application field, ACH4518-223-TD01’s primary area of usage is for filtering out and attenuating high and low frequency noise signals, such as radio frequency (RF) and electromagnetic interference (EMI), from electronic products, power supplies, and industrial equipment. It is particularly effective for circuit boards, cables, and other electrical systems that are sensitive to EMI. Additionally, it can also be used as an “on board” module to filter power signals in consumer electronics markets.

The ACH4518-223-TD01 filter’s primary working principle lies in its electrical characteristic mechanism. It utilizes four interconnected electrical components, two capacitors and two inductors, to form an LC circuit, and two capacitor-inductor branches in parallel as a RC circuit. This LC-RC dual-circuit structure offers a high attenuation of high frequency noise, high capacitive impedance, good high frequency characteristics, and low signal losses. As mentioned above, the filter is effective in attenuating signals with frequency range from 0.1MHz to 1GHz. Thus, the high-frequency filter can effectively filter out high-frequency noise in power supply lines. On the other hand, the low-frequency filter is suitable for signal harmonizing and signal noise suppression, thus providing effective EMI/RFI shielding.

Aside from the above-mentioned applications, the ACH4518-223-TD01\'s LC-RC dual-circuit structure can be also be integrated into mobile phones, PDAs, PC peripherals, digital products and more. Its highly efficient and accurate filtering effect can reduce interference from the wireless and mixed-signal environment of these devices, ensuring the high signal integrity and quality of such products. Additionally, it has a low self inductance of 0.014mH, low coupling coefficient of 15.5dB, and a wide filter bandwidth of 15MHz. In comparison to traditional filters, this low profile design offers a more attractive option for installation in limited space applications.

In conclusion, ACH4518-223-TD01 is a reliable filter solution to help reduce unwanted EMI/RFI inputs in a range of application fields and ensure signal integrity. It offers superior shielding performance and is highly compatible with low-profile space-limited products.