thieving pads

Question

hi,

I am newbie in pcb design. I would like to implement thieving pads for some of the igbts. Can anybody help me? I don't know how to start with.
I was told the last pin of the igbt needs a thieving pad for wave soldering process. I share a picture where you can see how the thieving should replace.

Regards

SandeepVarrier · Answer

After setting the parameters you can drag select the canvas if you wish to perform on multiple pins/nets if its individual pin you may click on the pins.

SandeepVarrier · Answer

There are two types of Thieving, Copper Thieving and Solder Thieving, Copper thieving is used for Copper balancing in the PCB and Solder thieving comes handy in the reflow process of soldering where the last pad is provided with extra pad area or separate pad at the same distance to steal the excessive solder (placement also plays an important role generally odd angle placement is avoided). Some users provide fillet for better connectivity, manufacturability and re-solderability such that the traces don't have broken joints while rework. 
 The first image you shared is of Fillet/teardrop in Allegro my response was in line to that. 
 In your case if you wish to provide solder thieving pads you may provide the same in the footprint by providing extra pad with soldermask open.

SandeepVarrier · Answer

Teardrop follows the trace, by design.

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