What is Flat-Top Beam and Why It Matters in Laser Soldering
Learn how flat-top beams distribute laser energy more evenly across a target area and why this matters for localized soldering and electronics rework.
What is a Flat-Top Beam?
Most lasers produce a Gaussian beam, where energy is strongest in the center and weaker at the edges.
A Flat-Top Beam distributes energy more evenly across the entire spot. The intensity stays relatively consistent from the center to the edges.
Why It Matters in Laser Soldering
Uneven heating can cause problems when reworking a single chip:
Center overheating → risk of damaging the chip
Weak energy at the edges → incomplete solder melting
Large temperature difference → higher thermal stress on the board
A Flat-Top Beam helps solve these issues by delivering more uniform energy across the target area.
Key Benefits
More consistent heating across the chip
Lower risk of center burn or incomplete reflow
Reduced thermal stress on surrounding components
Better process control and repeatability