upamfva
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Join Date: 6.11.2021
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Posted: 9.27.2022 1:09:14
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Automatic Technology 87009 Replacement PCB Board for Easy Roller
Automatic Technology 87009 Replacement PCB board for Easyroller garage door operators. Printed Circuit Boards are essential operator parts for controlling movement of the door and connecting accessories. This PCB board is specially designed to work with Automatic Technology’s Easyroller garage door operators and is not compatible with any other operator. Repair a broken or malfunctioning Automatic Technology Easyroller roll up garage door operator with a replacement PCB board from Action Industries.Get more news about Pcb Board Roller Leveller,you can vist our website!
Anyone involved within the printed circuit board (PCB) industry understand that PCBs have copper finishes on their surface. If they are left unprotected then the copper will oxidize and deteriorate, making the circuit board unusable. The surface finish forms a critical interface between the component and the PCB. The finish has two essential functions, to protect the exposed copper circuitry and to provide a solderable surface when assembling (soldering) the components to the printed circuit board.
Hot Air Solder Leveling (HASL) was once the tried and true method of deliver consistent assembly results. However, the ever-increasing circuit complexity and component density has stretched the capabilities of even horizontal solder levelling systems to their limits.
As component pitches became finer and a need for a thin coating became greater, HASL represented a process limitation for PCB manufacturers. As an alternative to HASL, alternative coatings have been around for several years now, both electrolytic and immersion processes.
HASL / Lead Free HASL
HASL is the predominant surface finish used in the industry. The process consists of immersing circuit boards in a molten pot of a tin/lead alloy and then removing the excess solder by using ''air knives'', which blow hot air across the surface of the board.
One of the unintended benefits of the HASL process is that it will expose the PCB to temperatures up to 265°C which will identify any potential delamination issues well before any expensive components are attached to the board.
Immersion Tin
According to IPC, the Association Connecting Electronics Industry, Immersion Tin (ISn) is a metallic ?nish deposited by a chemical displacement reaction that is applied directly over the basis metal of the circuit board, that is, copper. The ISn protects the underlying copper from oxidation over its intended shelf life.
Copper and tin however have a strong affinity for one another. The diffusion of one metal into the other will occur inevitably, directly impacting the shelf life of the deposit and the performance of the ?nish. The negative effects of tin whiskers growth are well described in industry related literature and topics of several published papers.
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