How do I classify this transformer?

[Skyfox]

Hi all,
I'm trying to fix a tiny little fluorescent tube driver circuit and it has this transformer in it.  I made up a schematic symbol for it below to illustrate what I'm talking about.  One side has 3 pins with the primary winding on the end pins.  The other side has 2 pins with two secondary windings which meet up at the center pin on the opposite side.  I've seen plenty of 5-pin transformers that have two windings and a center tap on the same side, but I've never seen one where their center tap is on the opposite side.  I've included the wire diameter and the resistance of each winding but I have no idea how many turns are on each one, especially the inner winding with the thinnest wire.
How do I classify this transformer in order to find a replacement?

[coppercone2]

the general class is I think called ferroresonant transformer (for LCD tubes). Maybe you can find similar pinouts searching that term

[Swake]

Looking for application notes in the datasheets of the chips around that thing.

If that transformer is 'dead' it is likely that one or more resistance measurements are not as build anymore. Especially if some part melted.
If you think your measurements are trust-able and as you know the diameter you could calculate the length of the wire based on the resistivity of copper. https://en.wikipedia.org/wiki/Electrical_resistivity_and_conductivity

[Wallace Gasiewicz]

If this is your circuit, you may not need the small secondary since it would be a brightness control:

https://external-content.duckduckgo.com/iu/?u=https%3A%2F%2Ftse2.mm.bing.net%2Fth%3Fid%3DOIP.2Q9pvdLy0pLmppyyvgIs2AHaDv%26pid%3DApi&f=1&ipt=c4132c4695346ef5ed3e0452ee336b0b8c4ad76f95c3da6a60e36e72f9935a58&ipo=images

[james_s]

It's most likely a custom wound transformer for that specific device. There is no set standard for the pin layout, if you're designing a custom transformer you can specify whatever pinout makes your PCB layout convenient.