The Hakko conical soldering tip of 0.15 mm x 13.5 mm having the very fine tip end, this shape is best for soldering micro components such as 0603, etc and for repairing high-density-mounting PWBs. such as in cellular phones. However, the heat capacity of shape I is very small and the heat may not be transferred to work piece sufficiently, which caused the insufficient solder it is called red eye generally. Shape I has the special application of heavy duty type. T15 Series tip For use with the FM2027 or FM2028 soldering irons.

Soldering tiny chip parts such as 0603 becomes easy
Soldering at the narrow pitches can be done easily