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 kupanga .
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.
Kusindikizidwa Dera Board Chiyambi
Normal Printed Circuit Board: 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 Normal PCB kupanga mphamvu:
| YMS Normal PCB kupanga maluso mwachidule | ||
| Mbali | mphamvu | |
| Chiwerengero Chosanjikiza | 1-60L | |
| Likupezeka Normal PCB Technology | Kupyola mu dzenje ndi mawonekedwe Ratio 16: 1 | |
| kuyikidwa ndi khungu kudzera | ||
| Zophatikiza | Mkulu pafupipafupi Zofunika monga RO4350B ndi FR4 Sakanizani etc. | |
| Mkulu Liwiro Zofunika monga M7NE ndi FR4 Mix etc. | ||
| Zakuthupi | CEM- | CEM-1; CEM-2, CEM-4, CEM-5. ndi zina |
| FR4 | EM827, 370HR, S1000-2, IT180A, IT158, S1000 / S1155, R1566W, EM285, TU862HF, NP170G etc. | |
| Liwilo lalikulu | Megtron6, Megtron4, Megtron7, TU872SLK, FR408HR, N4000-13 Series, MW4000, MW2000, TU933 etc. | |
| mkulu pafupipafupi | Ro3003, Ro3006, Ro4350B, Ro4360G2, Ro4835, CLTE, Genclad, RF35, FastRise27 etc. | |
| Ena | Polyimide, Tk, LCP, BT, C-zimadutsa, Fradflex, Omega, ZBC2000, Peek, PTFE, ceramic ofotokoza etc. | |
| Makulidwe | 0.3-8mm | |
| Makulidwe a Max.copper | 10 oz | |
| Kutalika kochepera kwa mzere ndi Space | 0.05mm / 0.05mm (2mil / 2mil) | |
| BGA PITCH | 0.35 mm | |
| Min makina mokhomerera Kukula | 0.15mm (6mil) | |
| Ziwerengero Zazolowera zoboola | 16: 1 | |
| Pamwamba kumaliza | HASL, Mtsogoleri waulere HASL, ENIG, Kumiza Tin, OSP, Kumiza Siliva, Chala Chagolide, Electroplating Hard Gold, Selective OSP ， ENEPIG.etc. | |
| Kudzera Kudzaza Njira | Njirayo imadzazidwa ndikudzazidwa ndi epoxy yoyendetsa kapena yosakhazikika kenako yophimbidwa ndikuphimbidwa (VIPPO) | |
| Mkuwa wodzazidwa, wodzazidwa ndi siliva | ||
| Kulembetsa | ± 4mil | |
| Solder Chigoba | Green, Red, Yellow, Blue, White, Black, Pepo, Matte Black, Matte wobiriwira.etc. | |
Mungakonde:
1, Summary of matters needing attention in circuit board welding
3, What is PCB
4、Kodi kuyesa kwa board ndi chiyani?
5. Kodi mapangidwe apamwamba a PCB ndi chiyani
Dziwani zambiri za zinthu za YMS
