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LF HASL Multilayer PCB

LF HASL Multilayer PCB

LF HASL multilayer PCB 1.Product Description Do you know what is LF HASL, LF HASL acronym of Lead Free hot air solder level, it is one of the printed circuit board’s surface treatment. LF HASL has many advantages: 1) Excellent solderability 2) Relatively inexpensive 3) Allows large processing...

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LF HASL multilayer PCB

1.Product description



Layer: 6  

Board Thickness: 2.0 mm 

Surface treatment: LF HASL. 

Material: FR4 TG170. 

Min line width/line distance:4/4mil

Do you know what is LF HASL, LF HASL acronym of Lead Free hot air solder level, it is one of the printed circuit board’s surface treatment. LF HASL has many advantages: 

1)Excellent solderability,2)Relatively inexpensive, 3) Allows large processing window, 4) Multiple thermal excursions, 

But it also has some disadvantages, 1) Difference in thickness / topography between large and small pads - but to a lesser degree than SnPb ,2) High processing temperature - 260-270 degrees C ,3) Not suited for < 20mil pitch SMD & BGA ,4) Bridging on fine pitch ,5) Not ideal for HDI products. With so many advantages, its cost is lower than gold immersion, any inquiry, please contact us freely, we will always here to solve the problems for you.

2.Our advantage:

●,No MOQ

●,10+ years experienced with PCB industry

●,Heavy copper PCB, Heavy gold PCB, Blind / Buried via PCB, High layer count PCB manufacturable

●,Factory direct price, we can offer more competitive price than trading company

●,Replying with price in one working day

●,Quick reaction, Shipping within 24 hours, get you a quote within 2 hours

●,Reliable quality ,Certificate: ROHS, UL, ISO9001-2000, ISO14001,SGS Lead-Free

3.What can we do? 

1)Rigid PCB 

Single-sided, double-sided & multi-layer PCB (up to 32 layers) HDI, High TG Multilayer, Heavy, Copper, Gold Finger, Blind Buried Holes PCB, Impedance PCB, high frequency PCB and other special process. 

Flexible & Rigid-flex PCB 

2)Flexible PCB , Rigid-flex PCB 

3)Metal Core PCB 

Single/Double-Sided Aluminum Base PCB and Copper Base PCB 

4)PCB Surface treatment 

HAL, HAL lead free, Immersion Gold/ Silver/Tin, Hard Gold, OSP 


Q:Which PCB surface is best for lead-free soldering? 

There is no “best surface”; all surfaces have their pros and cons. Which one you should choose depends on many factors. Please consult our technicians. 

Q: How does Uniwell ensure customers' profit? 

To protect customers' profit, we will sign NDA with customers and strictly abide by it.

Q: What is the MOQ?

The minimum order quantity of circuit board is 1pcs/panel. 

Q:What is meant by a buried via hole? 

This is a hole that runs between one or more inner layers. They are normally mechanically drilled.

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