Why Is Lead Free HASL Finish A Hassle?

Hot Air Solder Leveling (HASL finish) has long been a reliable PCB surface finish, still used today in military, aerospace, medical, and other applications. So what concerns do manufacturers have, and is lead free HASL your best option?

ENIG VS HASL In PCB Fabrication - Jhdpcb

Advantages and disadvantages of HASL / Lead Free HASL.(PCB finished treatment）

What's the Difference Between HASL and HASL Lead-free in PCB? - RAYPCB

HASL vs ENIG Surface Finishes: Understanding the difference

What are the Difference Between HASL and HASL Lead-free in PCB?, by David Yang

ENIG Rohs VS OSP VS HASL Comparison Table: Which Works Best?

Reviewing dual-layer PCBWay PCBs Maya's Programming & Electronics Blog

Printed Circuit Board Surface Finishes - Advantages and Disadvantages

pcbway Maya's Programming & Electronics Blog