Surface Mount Transformers from Signal Transformer for Power Over Ethernet

Signal Transformer has launched a series of surface mount transformers for power over ethernet (PoE) applications. They employ flyback topology where, typically, energy is stored in the magnetic field of the transformer during the first half of the switching cycle, then released to the secondary windings connected to the load in the second half of the cycle. 

Today’s Internet of Things expansion is creating a high demand for network devices connecting to the internet via ethernet cables, says the company. In turn, PoE connectivity is increasingly rising in the smart home and smart lighting market. PoE transformers are also used in conjunction with other circuitry within the equipment for isolation and splitting power and digital signals. Examples include VoIP phones, IP cameras, wireless access points, IPTV decoders and network routers, smart home appliances and smart LED lighting, healthcare, and other connected security cameras, wireless data systems, and information displays, as well as PoE switches, extenders, splitters, and injectors. 

The SPoE series is well suited for design engineers seeking a solution optimized for high-density boards, as well as competitively priced for end products. With auxiliary windings and five power levels in three platforms, they offer a wide array of power and platform designs. 

A Bel group company, Signal is a global manufacturer of custom and standard transformers, chassis and high frequency chokes and inductors, SMD inductors and wireless charging coils. For more info, see