Posted by Karen Fagg on 29th Sep 2014
I brought these red LED's as well as the green and yellow diffused LED's and they do the job their supposed to. Have used them along with the copper tape with KS2 children to make cards and keep out door signs and they were really pleased that they seem to still work a couple of weeks after making them.
These 25mA LED's have a forward voltage drop of 2.1V and at 20mA output 250 mCd of diffused red light. They are designed to mount into a 5mm holder and have a 54 degree viewing angle. Remember to get your current limiting resistors (we recommend 150 Ohm to allow 20mA of current).
All prices are in GBP