Bourns Chip LAN transformers and common mode chip inductor
Bourns Inductive Components Product Line is introducing the Model SM453229-231N7Y and SM453229-381N7Y Chip LAN 10/100/1000 Base-T Transformers

Bourns Inductive Components Product Line is introducing the Model SM453229-231N7Y and SM453229-381N7Y Chip LAN 10/100/1000 Base-T Transformers.
Unlike traditional LAN magnetics built with multiple toroidal core transformers and common mode chokes in a single module, the Chip LAN transformer is a discrete, center-tapped component wound on a drum core and capped with a ferrite plate to emulate the result of the close magnetic path of a toroid core. The Model SRF2012A-801Y Common Mode Chip Inductor pairs with the Chip LAN transformer to provide EMI suppression.
Bourns® Model SM453229-231N7Y and SM453229-381N7Y Chip LAN Transformers are compliant with IEEE 802.3 and the Bourns® Model SM453229-231N7Y is PoE+ capable. Both transformers are available in a 4.7 x 3.2 x 2.9 mm package size with an operating temperature range of -40 to +85 °C. They are ideal for use in LAN interfaces for a variety of telecommunication and network devices.
Features
SM453229-231N7Y / SM453229-381N7Y series
- IEEE 802.3 Ethernet compatible
- Discrete transformers and common mode chokes for flexible PCB layout
- PoE+ (SM453229-231N7Y only)
- Pairs with Bourns® Model SRF2012A-801Y Common Mode Choke for EMI reduction
- Expanded temperature range: -40 to +85 °C
- RoHS compliant*
SRF2012A-801Y series
- Shielded construction – low radiation
- Bifilar wound
- Use with Chip LAN transformers SM45322-231N7Y and SM453222-381N7Y
- AEC-Q200 Compliant
- RoHS Compliant* and Halogen Free**
Applications
SM453229-231N7Y / SM453229-381N7Y series
- LAN interfaces for a variety of telecommunication and network devices
SRF2012A-801Y series
- Pairs with Bourns® Model SM453229 Series Chip LAN Transformers to provide EMI suppression
* RoHS Directive 2015/863, Mar 31, 2015 and Annex.
** Bourns considers a product to be “halogen free” if (a) the Bromine (Br) content is 900 ppm or less; (b) the Chlorine (Cl) content is 900 ppm or less; and (c) the total Bromine (Br) and Chlorine (Cl) content is 1500 ppm or less.

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