This part is a kind of semiconductor called SM75056EL.

Function of this product has T1/E1 Transformer.

Manufacturers : Bourns

Image and pinout :

Some of the text within the PDF file :

PL IA NT Features ■ Small height of 5.65 mm ■ Operating temperature -40 °C to +85 °C Applications ■ Telecom *R oH S CO M SM YYW7505 W 6L ■ RoHS compliant* SM75056EL - T1/E1 Transformer Electrical Specifications @ 25 °C OCL (1-3) mH min. @ 10 kHz, 0.1 V ...1.2 OCL (6-8) mH min. @ 10 kHz, 0.1 V ...1.2 OCL (1-3) µH min. @ 10 kHz, 0.1 V, (-40 °C to +85 °C) .600 OCL (6-8) µH min. @ 10 kHz, 0.1 V, (-40 °C to +85 °C) .600 LL (1-3) µH max. @ 100 kHz, 0.1 V short (16-14) ...0.6 LL (6-8) µH max. @ 100 kHz, 0.1 V short (11-9) .0.6 Cww (16-1) pF max. @ 100 kHz, 0.1 V ...30 Cww (11-6) pF max. @ 100 kHz, 0.1 V ...30 [ ... ]

SM75056EL PDF Datasheet Download