Markus Wolfgart wrote:
PE-65101-001 Puls Eng. DIL WB 16 DC/DC Converter ??

This maker (and others) do broadband transformers in DIL packages.

Some of these (especially those used in twisted pair/Ethernet) very
commonly show up on the surplus market.

It would be interesting to repurpose them for ham use (e.g. the 88mH
toroids from the NA Bell system in the mid-20th century.)

Tim.