φ4*25H*4D*50L soldering bit

Dimensional Breakdown

• φ4 (Tip Diameter / Width): The working edge or tip diameter of the soldering bit measures 4.0 mm. This is typically a flat chisel or large cylindrical tip designed for heavy-duty joints requiring high heat storage.
• 25H (Heating Element Depth / Internal Hole Depth): The internal cavity depth where the heating element slides inside measures 25 mm.
• 4D (Shank / Outer Diameter): The outer diameter of the main metal shaft (the barrel that inserts into the iron handle) is 4.0 mm.
• 50L (Total Length): The entire end-to-end length of the soldering tip is 50 mm. [1,

Common Applications

• Automated robotic soldering arms due to their precise positioning tolerances.
• Soldering large ground planes, thick copper wires, and multi-layer PCBs that drain heat quickly.