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I am having trouble identifying this component. Pretty sure it must be an inductor of some sorts but I have never seen an inductor before with 9 legs (8 of which are used). The 8 used legs have continuity between them. I have measured the inductance with an LCR meter and posed the value between the legs (assuming that it is an inductor). Any help would be greatly appreciated.

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  • \$\begingroup\$ What is this device supposed to do? Is it working or damaged? \$\endgroup\$
    – vir
    Commented Jul 2 at 18:12
  • \$\begingroup\$ Have you removed it from the board to take these measurements? \$\endgroup\$
    – Finbarr
    Commented Jul 2 at 18:14
  • \$\begingroup\$ I have not removed it .. if the inductor was in series I didnt believe it was necessary .. but it turns out it may not even be an inductor \$\endgroup\$
    – wgthompson
    Commented Jul 2 at 18:19
  • \$\begingroup\$ @wgthompson You cannot measure inductors or transformers in-circuit. At least unless you know what the circuit looks like of you can. So your measurements are useless and don't mean anything about the transformer. \$\endgroup\$
    – Justme
    Commented Jul 2 at 18:23
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    \$\begingroup\$ @Justme without detracting from your comments or answer, which are perfect, we should give the OP credit for so meticulously attempting to measure the leg-to-leg inductances before asking the question. \$\endgroup\$
    – Stephan Samuel
    Commented 2 days ago

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It's not an inductor.

It's a transformer for a DC/DC converter, made by Epcos which is now a part of TDK.

Likely a custom order product for this specific product so likely no public data sheet available with the part number printed on it.

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    \$\begingroup\$ And the extra pin is to make sure that it can only be inserted with the correct orientation. \$\endgroup\$
    – Mark Morgan Lloyd
    Commented 2 days ago

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