China New Energy Component Factory

According to the statistics and forecasts, the global battery Management Systems (BMS) market reached sales of US $6.3 billion in 2021 and is projected to reach US $40.7 billion by 2028, growing at a compound annual growth rate (CAGR) of 30.1% (2022-2028).

The primary purpose is isolation. Typically they are also used as part of the signal conditioning, turning a pair of single-ended drives into a differential signal on transmit and establishing the correct common mode voltage for the receiver on receive. For this reason the device-side of the transformers is usually center-tapped.

The AEC-Q200 qualification is the global standard for stress resistance that all passive electronic components must meet, if they are intended for use within the automotive industry. Parts are deemed to be "AEC-Q200 qualified" if they have passed the stringent suite of stress tests contained within the standard.

It seems there might be some confusion in the terms used.

IEEE 802.3 is a working group that writes the collection standards of Institute of Electrical and Electronics Engineers (IEEE) , which defines medium access control (MAC) for the physical layer and data link layer of wired Ethernet. This is typically a local area network (LAN) technology with some wide area network (WAN) applications. Physical connections are established between nodes and/or infrastructure devices (hubs, switches, routers) through various types of copper or optical cables.

Planar transformers are used in electronic devices to transform electrical energy from one circuit to another. They are commonly found in power supplies for a wide range of applications, such as computers and televisions.