Bourns SM51625EL LAN 10/100/1000 Base-T Transformer

Bourns SM51625EL LAN 10/100/1000 Base-T (PoE+) Transformer is a potted construction, single-port device designed for Ethernet applications. This LAN transformer features up to 1.2ADC per center tap, an extended operating temperature range from -40°C to +85°C, and 1.5kVrms isolation voltage. The Bourns SM51625EL Transformer is compliant with IEEE802.3 standards and RoHS compliant.


  • Compliant with IEEE802.3 standards
  • Designed for 10/100/1000 Base-T and PoE+
  • PoE up to 1.2ADC per center tap
  • RoHS compliant


  • LAN
  • Ethernet
  • Power over Ethernet (PoE+)


  • 0.5µH maximum leakage inductance at 100kHz, 0.1V
  • 1.4Ω maximum DCR
  • 1500Vrms Hi-Pot (primary to secondary) at 1mA for 60 seconds
  • Insertion loss
    • -1.1dB maximum from 0.3MHz to 1MHz
    • -0.8dB maximum from 1MHz to 65MHz
    • -1dB maximum from 65MHz to 100MHz
  • Return loss
    • -16dB minimum from 1MHz to 40MHz
    • -10+20 Log10 (f/80MHz) dB minimum from 40MHz to 100MHz
  • Cross talk between each channel
    • -41dB minimum from 1MHz to 30MHz
    • -37dB minimum from 30MHz to 60MHz
    • -33dB minimum from 60MHz to 100MHz
  • -30dBm minimum common-mode rejection from 0.3MHz to 100MHz
  • Temperature ranges
    • -40°C to +85°C operating
    • -55°C to +125°C storage
  • Moisture Sensitivity Level (MSL) 1
  • Tin terminations
Publicado: 2016-05-19 | Actualizado: 2022-03-11