A detailed image of a 10mm light emitting diode.      

  White clear lens quadrate Light Emitting Diode.  

  5mm Blue Light Emitting Diode with a clear lens from electron.com  

  1,8mm orange the-hole light emitting diode from electron.com    

  100 3mm Blue Lens LED from czb6721960 shop on eBay $2.82 USD. item #140935550658           Comparison of 5mm and 3mm Light Emitting Diodes.    

  100 5mm Blue Lens Thru Hole LEDs from czb6721960 shop on eBay for $3.30 USD. item #160992146984   Comparison of 5mm and 3mm Light Emitting Diodes.            

  Light Emitting Diodes from Any Circuit’s store on ebay   200x Red LED 5×2.5mm Diffused, Red BR5379K DE2584 (310725335279) $3.96   These tombstone shaped LEDs have the positive lead as short and the negative lead as long. This is reversed from the standard markings and therefore makes this product difficult to teach with.   This LED can also be […]