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Hunan Speeda Technology Co., Ltd.
PCB Service & Product
Lead Free HASL PCB
Lead Free HASL PCB
Lead Free HASL PCB
Lead Free HASL PCB
Lead Free HASL PCB
Lead Free HASL PCB
Lead Free HASL PCB

Lead Free HASL PCB / Immersion Tin PCB

Lead-free HASL is to coat a layer of tin-lead alloy on the copper surface to prevent the oxidation of the copper surface and provide a good welding base for the subsequent assembly process. What is hot air leveling? It is actually a process of combining dip soldering and hot air leveling, and coating eutectic solder in the metallized holes of lead-free printed circuit boards and printed wires. The process is to first dip the lead-free printed circuit board with flux, then dip the molten solder, and finally pass between the two air knives. Use the hot compressed air in the air knife to remove the excess on the printed board The solder is blown off, and at the same time, the excess solder in the metal holes is eliminated, thereby obtaining a bright, smooth and uniform solder coating.

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Features of Lead Free HASL PCB

Lead Free HASL PCB

The immersion tin process can form a flat copper-tin intermetallic compound. This feature makes the immersion tin have the same good solderability as hot air leveling without the troublesome flatness problems of hot air leveling; nor does it have electroless nickel plating / Diffusion issues between gold and metal; just the tin immersion board cannot be stored for too long.

Lead Free HASL PCB

Immersion tin does not bring any new elements into the solder joint, which is especially suitable for communication backplanes. The use of the immersion tin board is restricted due to the inconvenience of storage and the carcinogens contained in the process. About 5% -10% of PCBs currently use a dip tin process.

Parameters of Lead Free HASL PCB

1. Prevent oxidation of bare copper surface; 2. Maintain solderability


SPEEDAPCB has a mature HASL production line, as well as particularly experienced engineers, we will do our best to provide you with the perfect plate making service.


Board nameUSB transfer board
Layers of number4
Thickness of board1.6mm
Surface treatmentHASL
Min Line width /line spacing6/6mil


Board namePower signal acquisition board
Layers of number6
Thickness of board1.6mm
Surface treatmentHASL
Min Line width /line spacing5/5mil


Board nameHigh power board
Layers of number2
Thickness of board2.0mm
Surface treatmentHASL
Min Line width /line spacing15/15mil


Board nameData storage board
Layers of number6
Thickness of board1.6mm
Surface treatmentHASL
Min Line width /line spacing4/4 mil


Board nameSignal sampling backplane
Layers of number6
Thickness of board2.0mm
Surface treatmentHASL
Min Line width /line spacing4/4 mil


Board name2.4G Microwave antenna sink silver board
Layers of number6
Thickness of board1.6mm
Surface treatmentHASL
Min Line width /line spacing5/5 mil



Board nameHD image processor board
Layers of number12
Thickness of board1.6mm
Surface treatmentGold finger + Tin Spray + Hot Air Leveling
4/45/5 mil



Characteristics of Lead-free HASL PCB

  • The most prominent advantage of solder coating with hot air leveling is that the coating composition always remains the same, and the edges of the printed circuit can be completely protected.


  • The cost of hot air leveling is lower than other surface treatments, the process is mature, and the weldability is good.


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PCB FAQ
Q: Payment?
A: T/T,Western Union.Paypal.
Q: Delivery terms and time?
A: We will ship the goods by DHL, TNT, Fedex, UPS or Aramex.the order can be sent out within 7-30 days depend on your order quantity, customization.
Q: Packing?
A: Flexible packing according to the specific requirements of the clients.
Sales office: 4F,Wangdefu International Building, Wanjiali Road, Furong District, Changsha City, Hunan Province
info@speedapcb.com
+86-183 1234 0501