Marconi Ericsson BML901217/1 Marconi/Ericsson SMA/OMS/MSH SDH transmission Power Supply

The Marconi Ericsson BML901217/1 is a power adapter unit built by Astec for Ericsson telecommunications equipment. Astec was a long-standing OEM supplier of power conversion products to the telecoms industry, so its name appears on the unit itself while the BML part number is the Ericsson catalogue reference that identifies it, and both are needed when matching a replacement. Power units in telecoms equipment are consumable items with a finite service life, since electrolytic capacitors degrade with heat and running hours, which makes them one of the more common replacement requirements on long-lived installations. Output voltage, current rating and connector type must be matched to the target equipment, as a superficially similar unit from an adjacent part number will not necessarily be interchangeable. Units in this range carry Marconi or Ericsson markings depending on build date, the transmission business having transferred in 2006. Tech-Star, UK-based and shipping worldwide, supplies power units for telecoms equipment maintenance.