Automotive-grade chip LAN transformer has low profile

PCB layout flexibility is offered with Bourns’ Model SM453229A-381N7Y 10/100/1000 Base-T Chip LAN transformer. The low profile automotive-grade chip LAN transformer is suitable for EMI suppression and Ethernet-based applications.

The transformer has been designed for maximum PCB layout flexibility and is a low profile discrete device. It is AEC-Q200-compliant with an expanded temperature range of 40 to +105 degrees C and is capable of Hi-Pot isolation of 1500V AC / 60 seconds. It is also able to withstand pulse voltages of up to 2400V, 1.2 / 50 microseconds. These features make the Model SM453229A-381N7Y ideal for 10/100/1000 Base-T Ethernet networks, industrial single pair Ethernet and IEEE 802.3 Ethernet-based applications and pairing common mode chip inductors for EMI suppression. 

The small, centre-tapped transformer is wound on a drum core and capped with a ferrite plate to emulate the close magnetic path of a toroid core. The centre tap allows for common mode suppression even without an extra common mode filter, advises Bourns. The discrete shielded transformer helps to reduce efforts in EMI troubleshooting. Bourns’ fully automated production process contributes to a higher degree of component uniformity and promotes consistent quality and improved reliability. High-volume, cost-effective production can be achieved with a shorter production lead time because of this automated production process. 

Bourns SM453229A-381N7Y 10/100/1000 Base-T chip LAN transformers are available now and are RoHS-compliant and halogen free. 

Bourns manufactures and supplies position and speed sensors, circuit protection, magnetic components, microelectronic modules, panel controls and resistive products. It serves a range of markets, including automotive, industrial, consumer, communications, medical (low/medium risk) and audio.

The company is headquartered in Riverside, California, USA.

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