ALCATEL 3DB00090AA -Lucent legacy transmission/access equipment (exact subrack platform unconfirmed) Power Supply

The 3DB00090AA is an Alcatel-Lucent 48V to -60V DC/DC converter card, used to step incoming telecom-standard -48V DC plant power up to the -60V rail required by certain Alcatel-Lucent transmission and switching subracks. DC/DC converter cards like this sit in a shelf’s power distribution slot and protect the rest of the subrack’s electronics from voltage variation on the site’s DC power plant, while also providing basic filtering and fault isolation so a single converter failure does not take down the whole shelf. This part number is documented as a 48-to-60V DC/DC converter by multiple independent Alcatel-Lucent parts resellers, though the specific subrack/platform it was originally fitted to is not confirmed, and it has been observed across a family of closely related suffix variants (AA03, AA04, AA05 and others) covering the same basic converter function. Engineers maintaining older Alcatel-Lucent transmission or access equipment keep this as a like-for-like power module spare, since a mismatched or missing converter card can affect an entire shelf’s operation. Tech-Star (UK-based, shipped worldwide) supplies this as a tested spare. Get in touch with our team to confirm the exact suffix/revision needed for your shelf before ordering.