Informatique
PCB Surface |
HASL (hot air solder leveling)/HASL lead Free |
HASL/HASL lead free is the process of coating tin-lead/ tin-lead free solder on the surface of PCB so that it forms a layer of both anti-copper oxidation and good weld ability of the coating. |
Organic Coating (OSP) |
OSP is a chemical process to build a layer of organic skin film on the clean bare copper surface, it helps anti-oxidation,and moisture resistance, to protect the copper surface from vulcanization or oxidation, etc. In simply words,OSP acts as a barrier between copper and air. |
ENIG (Electroless Nickel/Immersion Gold) |
ENIG is a thick nickel gold alloy with good electrical properties on the copper surface,acts as a rust barrier to protect PCB for a long time, which can be useful and achieve excellent electrical performance in the long term use of PCB. |
Immersion Silver |
Silver impregnation does not put heavy coat on PCB, which provides good electrical properties and maintains good solder ability when exposed to humidity ,heat,and pollution, |
Immersion Tin |
With adding organic additives to the tin layer, the tin layer structure is granular, which overcomes the tin whisker problems and has excellent thermal stability and solder ability. |
As one of contract electronics manufacturing companies, we will do our best to meet all the needs of customers.
Bonne affaire : acheter au vendeur
Cette page concerne les importateurs et exportateurs de PCB Surface Rechercher dans la catégorie : Informatique Rechercher dans la catégorie : surface |
Dimanche 10 août 2014
Quantité : as you nee - Prix : USD 3500-88888
Quick details: brand : Yong hua model; YHQ 360 Reducer: ZQ350 Ratio: 1: 31.5 roller size: 360*250 capacity: 0.1-3t/h oval size: 2.26*1.53*1.76 Spindle speed : 13-15r/min function: by pressing , the machine can mold a variety of mineral powder,metal powder, coal powder,coke...
Mercredi 22 avril 2015
Quantité : 1piece - Prix : USD5~36
Un panneau de batterie solaire: 3W 2: 3.7v / 4400mA de batteries au lithium de haute qualité de la capacité de la batterie. 3.led: puissance 3W, 38pcs. Jingyuan SMD 2835led, la température de couleur 5500-6000k, lumières sur 300lm.Lampe à économie d'énergie des lampes à incandescence...
Vendredi 16 mai 2014
Quantité : 500000pcs - Prix : $1-25/pc
SLA et SLS Pourquoi utiliser stéréo lithographie? Stéréo lithographie est très similaire à la sls( frittage laser sélectif) processus de prototypage. Il est préférable d'utiliser sla, quand finition de surface et l'apparence générale directement de la machine est le facteur le...