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PCB Express Inc is ISO 9001:2000 certified printed circuit boards (PCB) Assembly Company and Printed Circuit Board Manufacturer in USA producing high quality, low cost PCB Printed Circuit Board - Prototype Printed Circuit Boards. PCB Express Inc a printed circuit board manufacturer in US specializing in PCB Manufacturing, fabrication, Assembly and associated PCB Services including Multi layer (up to 24 layer), Double Sided and Single Sided PCBs. PCB Express serves the printed circuit board industry.
PCB Express Inc is manufacturer of Multilayer Printed Circuit Boards (PCB) in US. We are Prototype and quick-turn printed circuit board manufacturer providing time to market solutions. We manufacturers high-quality double and single sided printed circuit boards, Multi Layer Printed Circuit Boards.
Our PCB Manufacturing Service offers Competitive Prices and Quick Turnaround for your PCB Prototypes. PCB Express Inc is the leading prototype and quick-turn printed circuit board manufacturer providing time to market solutions to industry leaders. We are able to meet your PCB prototype and fabrication needs with 24-hour turnarounds and with the highest quality printed circuit boards.
PCB Prototypes are our specialty:
Quick-turn orders: "Small volumes, really fast”
Total turn-key solutions: printed circuit board design, manufacturing, and assembly
Pre-production and prototype PCB
Low- and medium-volume orders
High quality and affordable prices
Contact full service Printed Circuit Boards Manufacturer and PCB Assembly Company for quality Printed Circuit Assembly from website www.pcbontime.com
Dépannage informatique Genève pour particuliers, indépendants et PME.
Cours d'informatique Genève
Création site web
Création e-boutique
Référencement web
Marketing 2.0
Gestion de campagnes publicitaires
This EAGLE CAD PCB design software is amazing. Got back from a meeting, did my toad patrol, sat down while my girl made a lovely dinner, before dinner was on the table I had gone from nothing to this PCB design for my Chamber Orchestra. It's *INSANE* that hardware can be designed this quickly.
Must do a session on this for the computer-centric kids in my upcoming role of STEM Ambassador for Bristol and Bath.
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www.speedapcb.com/lead-free-hasl-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.
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
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.
Features; will connect to either a 14 or 16 pin LCD (with or with-out backlighting), the LCD contrast is adjustable with a POT, 7 selectable I2C addresses for multiple LCDs or other I2C devices on the same bus, and 5 push button inputs with interrupt output line to microcontroler.