Distribute power in the most cost-effective way by using Texas Instruments" TPS23851DCE power over Ethernet controller. Use this part at voltages between 3 V and 3.5 V. In order to ensure parts aren"t damaged by bulk packaging, this product comes in tube packaging to add a little more protection by storing the loose parts in an outer tube. This POE controller has a minimum operating temperature of -20 °C and a maximum of 85 °C.