Auto-Insertion of Option 002 Tape and Reel LED Lamps -App Note

Avago Technologies Option 002 tape and reel LED lamps have straight leads on standard 2.54 mm (0.100 inch) center spacing. These lamps may be auto-inserted into printed circuit boards with most radial auto-insertion equipment. However, it is important to have the proper plated through hole size and spacing in the printed circuit board to assure high insertion yields. This application brief details specific information on the printed circuit board plated through hole size, spacing and tolerances necessary to assure high insertion yields of Option 002 LED lamps with 0.46 mm (0.018 inch) square leads. The problem with auto-inserting Option 002 straight lead LED lamps shows up at the cut and clinch operation. With the Option 002 LED lamps, the mechanical stress of the cut and clinch operation is transmitted directly up the leads into the lamp package This is in contrast to the Option 001 LED lamps that have formed leads with 5 mm (0.197 inch) spacing. The formed leads of the Option 001 lamps absorb the mechanical stress of the cut and clinch operation. Thus the stress is not transmitted to the lamp package.