Removed anode from my SCR

[jackorocko]

Why would they cut off the anode pin on a SCR? Would make sense if the tab was electrically connected to the anode, but I looked at the datasheet and I didn't see where it stated this.

http://cs.utsource.net/goods_files/pdf/22/22042_STMICROELECTRONICS_BTW69N1200.pdf

edit: well the MM reassures me that my assumption the tab is electrically connected to the anode is true. The SCR is rated for 200V, wouldn't it be a pretty dumb idea to charge a heatsink to 200V??? Seems like when they cut off the anode, they limited the scope of this SCR to 40V or less to keep it rather safe.

 

[davenn]

If you look at the datasheet, top of page 3

you will see that there 2 versions BTW69 - insulated and BTW69N uninsulated

If you have the xxx69N version then the anode is connected to the tab and the tab will be soldered/bolted to the PCB for both heatsinking and anode operation

Dave