inductor polarity

Typically that is the case.

Best is to shoot off an Email to Murata. They are usually quite responsive to technical inquiries. That one email could save your production folks a lot of future grunt work.

But those also talk a lot :-)

It works fine, but the total inductance will be somewhat higher than just 2x. The external field is way less, I use that trick in a sensitive environment (ADC's etc).

If you mount them parallel to the PCB, try alternating 90 degree positioning from pair to pair to minimize coupling.

Arie

I can't see the Digikey link. They want me to switch off my adblocker, which is just no.

If this is a solenoid, turning it 180 degrees is not going to make any difference! It will still be the same winding direction!

Jeroen Belleman

Try this:

If I swap the pins, namely reverse the current direction, won't the mag field direction reverse?

I did fill out their inquiry form. I hate filling out forms.

Murata makes great stuff, like dc/dc converters and such.

One could make a 10s of kilovolt isolated power supply with a pair of "shielded" inductors separated by a sheet of plastic.

Even better! Any guess how much? I'll order some samples to play with.

I want to use all the available height and minimize PCB footprint, so this is an ideal part. But there must be some other orientation that miminizes coupling between inductor pairs.

The product is an 8-channel programmable dummy load module that simuates resistance and inductance, to pretend to be a solenoid or a motor winding, so low-level crosstalk won't get noticed.

Ah, yes, you are right, it will.

Jeroen Belleman

Be careful. Thick plastic maybe but the thin stuff can blow and depending on the kind of plastic let off some toxic fumes.

You don't have to. I haven't seen any ads on Digikey. But I do sometimes see this issue which can be fixed as follows. Open Microsoft Edge. Go to Digikey or paste the link. Do the "Prove you're human" test by holding the mouse button down as needed. Once the site opens, close Edge and forget about it again. Open Firefox and paste the link. The site will open normally.

What's going on here is likely to be a system which stores the fact that the human test was passed at your specific public IP address. The reason for this is to stop the myriad of bots out there from scraping the site content for their own purposes (AI training comes to mind). As long as you're using the the same public IP address then you won't have to do the human test again for a specific length of time but I don't know how long (maybe a few days).

If you are on a system where your public IP address is likely to change often then you will likely have to do this often.