Double sided pcb Normal pcb Lead free HASL Counterbore Manufacturer | YMS PCB
HAL(Lead Free), the full name is Hot Air leveling with Lead Free. Compared with HASL, the main difference for HAL(Lead Free) is the element of material which do not contain Lead(Pb), so it’s RoHS Compliant and it’s much more popular and widely used in PCB gamybos .
HAL(Lead Free) requires higher run temperatures for lead free solder and longer contact time, the production cost for HAL(Lead Free) is slightly higher than HASL(Tin/Lead).
The manufacturing process of HAL(Lead Free) is similar to HASL(Tin/Lead), the circuit boards will be submersed in molten solder(Lead Free). This solder will cover all the exposed copper surfaces. Upon retraction from the solder, high pressure hot air is blown over the surface through air knives, this levels the solder deposit and removes the excess solder from the surface of printed circuit boards.
Įvadas į spausdintinę plokštę
Įprasta spausdintinė plokštė: Most PCBs for simple electronics are simple and composed of only a single layer. More sophisticated hardware such as computer graphics cards or motherboards can have 2 or multiple layers, sometimes up to twelve.
A printed circuit board (PCB) mechanically supports and electrically connects electrical or electronic components using conductive tracks, pads and other features etched from one or more sheet layers of copper laminated onto and/or between sheet layers of a non-conductive substrate. Components are generally soldered onto the PCB to both electrically connect and mechanically fasten them to it.PCBs can be single-sided (one copper layer), double-sided (two copper layers on both sides of one substrate layer), or multi-layer (outer and inner layers of copper, alternating with layers of substrate). Multi-layer PCBs allow for much higher component density, because circuit traces on the inner layers would otherwise take up surface space between components. The rise in popularity of multilayer PCBs with more than two, and especially with more than four, copper planes was concurrent with the adoption of surface mount technology.
What is the difference between a Countersink and a Counterbore?
YMS įprastos PCB gamybos galimybės:
| YMS Normal PCB gamybos galimybių apžvalga | ||
| Funkcija | galimybes | |
| Sluoksnių skaičius | 1-60 litrų | |
| Galima naudoti įprastą PCB technologiją | Kiaurymė su proporcija 16: 1 | |
| palaidotas ir aklas via | ||
| Hibridas | Aukšto dažnio medžiagos, tokios kaip RO4350B ir FR4 Mix ir kt. | |
| Didelio greičio medžiaga, tokia kaip M7NE ir FR4 Mix ir kt. | ||
| Medžiaga | CEM- | CEM-1; CEM-2, CEM-4, CEM-5.tml |
| FR4 | EM827, 370HR, S1000-2, IT180A, IT158, S1000 / S1155, R1566W, EM285, TU862HF, NP170G ir kt. | |
| Didelis greitis | „Megtron6“, „Megtron4“, „Megtron7“, TU872SLK, FR408HR, N4000-13 serijos, MW4000, MW2000, TU933 ir kt. | |
| Aukštas dažnis | Ro3003, Ro3006, Ro4350B, Ro4360G2, Ro4835, CLTE, Genclad, RF35, FastRise27 ir kt. | |
| Kiti | Poliimidas, Tk, LCP, BT, C sluoksnis, „Fradflex“, „Omega“, ZBC2000, PEEK, PTFE, keramikos pagrindai ir kt. | |
| Storis | 0,3 mm - 8 mm | |
| Maks. Vario storis | 10 oz | |
| Mažiausias linijos plotis ir erdvė | 0.05mm / 0.05mm (2mil / 2mil) | |
| BGA PITCH | 0,35 mm | |
| Min. Mechaninis išgręžtas dydis | 0,15 mm (6 mln.) | |
| Kiaurymės proporcija | 16 ： 1 | |
| Paviršiaus apdaila | HASL, be švino HASL, ENIG, panardinimo skarda, OSP, panardinamasis sidabras, auksinis pirštas, galvanizuotas kietasis auksas, selektyvusis OSP ， ENEPIG.etc. | |
| Per užpildymo parinktį | Vipas padengtas ir užpildytas laidžiu arba nelaidžiu epoksidiniu dangteliu, tada uždengiamas ir padengiamas (VIPPO) | |
| Vario užpildas, sidabro užpildymas | ||
| Registracija | ± 4mil | |
| Lydmetalio kaukė | Žalia, raudona, geltona, mėlyna, balta, juoda, violetinė, matinė juoda, matinė žalia. Ir kt. | |
Jums gali patikti:
1、Summary of matters needing attention in circuit board welding
3 、What is PCB
4、Kas yra plikos lentos testavimas?
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