May 25, 2022 #1 C cupoftea Advanced Member level 5 Joined Jun 13, 2021 Messages 2,668 Helped 54 Reputation 108 Reaction score 116 Trophy points 63 Activity points 14,026 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
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
May 25, 2022 #2 D dick_freebird Advanced Member level 7 Joined Mar 4, 2008 Messages 8,995 Helped 2,333 Reputation 4,683 Reaction score 2,523 Trophy points 1,393 Location USA Activity points 71,629 Excess C degrades L? Upvote 0 Downvote
May 25, 2022 #3 FvM Super Moderator Staff member Joined Jan 22, 2008 Messages 52,491 Helped 14,757 Reputation 29,796 Reaction score 14,124 Trophy points 1,393 Location Bochum, Germany Activity points 298,396 The recommended pads are much bigger than inductor terminals, why do you say they are small? Did you read the drawings completely? Upvote 0 Downvote
The recommended pads are much bigger than inductor terminals, why do you say they are small? Did you read the drawings completely?
May 26, 2022 #4 E Easy peasy Advanced Member level 6 Joined Aug 15, 2015 Messages 4,780 Helped 1,402 Reputation 2,804 Reaction score 1,959 Trophy points 1,393 Location Melbourne Activity points 26,376 there is very little to limit you making the pads and associated tracks larger to take some of the heat away ... Upvote 0 Downvote
there is very little to limit you making the pads and associated tracks larger to take some of the heat away ...
May 26, 2022 #5 KlausST Advanced Member level 7 Joined Apr 17, 2014 Messages 25,294 Helped 4,874 Reputation 9,769 Reaction score 5,570 Trophy points 1,393 Activity points 169,392 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 Upvote 0 Downvote
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