Why are inductor recommended pads so small?

[cupoftea]

Hi,
Why are the recomended pads on this TDK inductor so small?......they should be big as possible under the body...for heat dissipation.....its a shielded inductor so copper under the part wont get eddy current heated.

In use in SMPS, the pads should be big as poss?

SLF10145T-101M1R0-PF

https://www.farnell.com/datasheets/2041195.pdf

 

[dick_freebird]

Excess C degrades L?

 

[FvM]

The recommended pads are much bigger than inductor terminals, why do you say they are small? Did you read the drawings completely?

 

[Easy peasy]

there is very little to limit you making the pads and associated tracks larger to take some of the heat away ...

 

[KlausST]

Hi,

I´d say the package drawings show a small pad. Just for soldering and for low parasitic capacitance.

The designer is free to choose a bigger copper area for heat spreading and and carrying current.

Klaus