SRF2012A-361YA

The SRF2012A-361YA is a common mode choke, specifically; it is a ferrite bead common mode choke. Common mode chokes, also known as EMI filters, are electronic components designed to protect against electromagnetic interference (EMI) which works by blocking any radiation generated from passing through the equipment in use. They absorb and dissipate the energy that would otherwise be transferred to sensitive components, which can cause system and device failure.

The SRF2012A-361YA is used in a variety of applications, such as automotive systems, industrial automation and control systems, telecommunications and high-speed data circuits. It is designed to provide superior noise resistance in these highly sensitive areas, as it is capable of handling high frequencies up to 3 GHz. It is capable of working over a wide range of temperatures, due to the use of high-temperature Ferrite material that minimises impedance variation, which could otherwise cause harmful surges.

The SRF2012A-361YA is designed around a two-phase common mode choke. It features two terminals, both of which are connected to a primary coil, which is constructed using high permeability ferrite material. The choke provides critical cross-talk protection by directing any common mode interference onto the linked pair, while at the same time absorbing any residual noise. The choke is designed so that any residual interfering signals are filtered out by the core before they reach the intended equipment.

The working principle of the SRF2012A-361YA can be explained by examining the common-mode filter design. The primary coil is constructed using two ferrite beads, which each contain an individual coil wound around a common-mode ferrite core. This design specifically reduces the influence of common-mode EMI, as the ferrite core acts as an inductor, allowing for a line of purer current to flow between the coils. This makes sure that any EMI travelling between the two coils is attenuated, thus reducing the amount of electromagnetic interference that travels into the pair.

The choke also exhibits excellent high frequency noise suppression, as the filter action provided by the ferrite core allows for only a certain amount of noise to pass through. This can be further improved by increasing the turns ratio of the core, meaning that the ferrite material can act as an even more effective filter, blocking out even more interference and providing high levels of noise suppression.

In summary, the SRF2012A-361YA is a common-mode choke specifically designed to reduce the amount of electromagnetic interference present in various applications. Its ferrite core offers excellent noise suppression capabilities, while its two-phase design provides additional filtering and superior cross-talk protection. It is designed to work over a wide range of temperatures, making it an ideal choice for applications that require reliable performance.