Through hole component on a one single layer PCB (IMS)

[Winsu]

Hello Everyone,

I have been trying to find a SMD common mode choke with the same specifications than this one:

https://www.digikey.co.uk/product-detail/en/kemet/SC-05-30J/399-10652-ND/4290718

At the moment it hasn't been possible, so I'm looking for solutions to fit a through hole component on an IMS single layer PCB. The PCB is sitting on a heat sink ( that's why it is single layer), so we can't make drill holes all the way through. I have though on cutting the legs of the common mode choke and solder it by hand, but it doesn't look a very secure solution. Any idea to fit it on?.

Thanks,
Winsu

 

[KlausST]

Hi,

with an approximate weight of 30g it will be hard to to in SMD.
The problem is the mechanical ruggedness against vibration.

Solutions:
* use a suitable glue for better mechanical ruggedness
* reduce the specification for your product regarding acceleration / vibration.

Klaus

 

[FvM]

I don't see a SMD CM choke with same parameters. There's e.g. Laird CMX1211W182B-10, 9A - 1.8 mH or Coilcraft CG3528-AL, 3.1 A - 3 mH. You may need to make a custom designed SMD coil. I agree with KlausST that weight of large SMD coils may be a problem.

 

[d123]

Hi,

Maybe not stable enough: SMD sil sockets to accommodate those four pins.