Qingdao Kerongda Tech Co.,Ltd.
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SMT (Surface Mount Technology) is a technology for mounting electronic components directly on the surface of a printed circuit board (PCB). By mounting the components on the printed circuit board, electrical connection and mechanical fixation are realized. SMT components are small in size, which saves a lot of space and is suitable for high-density and miniaturized electronic products.
THT (through-hole Technology) is the process by which electronic components are threaded Through prefabricated holes in a printed circuit board and secured to the board by welding. This technique is suitable for larger sized components and is commonly used in high power and high voltage applications.
DIP
1,The process of DIP processing is: putting in the hole →AOI→ wave soldering → cutting pin →AOI→ correction → washing → quality inspection.
2,After wave soldering, The products will be will scanned by AOI equipment to ensure that no error occurs.
Single-side mixed loading process
Incoming material detection => PCB side A screen printing solder paste (spot patch glue) => patch => drying (curing) => reflow welding => cleaning => plug-in => wave soldering => cleaning => detection => repair
Double-sided mixed loading process
A: Incoming material detection =>PCB B spot patch glue => patch => curing => turn over =>PCB A side plug-in => wave soldering => cleaning => detection => repair
Stick before insert, suitable for SMD components more than separate components
B: Incoming material detection => PCB side A plug-in (pin bent) => turn over => PCB side B patch glue => patch => curing => turn over => wave soldering => cleaning => detection => repair
Insert before paste, suitable for separated components more than SMD components
| No. | Types Of Assembly | File Format | Component Footprinr | Component Package | Testing Produres | Produres | Others |
| 1 | SMT ASSEMBLY | Gerber RS-274X | 0201,0402,0603... | Reels Package | Visual Inspection | Lead-Free(Rohs) | Custom Reflow Profile |
| 2 | SMT & THT Assembly | BOM(.xls,.csv,.xlsx) | BGA,QFN,QFP,PLCC | Cut Tape Package | X-Ray Inspection | Leaded Solder | Standard Reflow Profile |
| 3 | 2 sided SMT,THT Assembly | Pick-N-Place/XY file | SOIC,POP...Connectors | Tube and Tray | AOI,ICT(In-Circuit Test) | Reflow Soldering | Smallest Size:0.2"x0.2" |
| 4 | Mixed Assembly | ... | Small Pitch of 8 Mils | Loose parts and bulk | Functional Testing | Wave Soldering | Largest Size:15"x"20 |
| Turnkey PCBA | PCB+components sourcing+assembly+package | ||||
| Assembly details | SMT and Thru-hole, ISO lines | ||||
| Lead Time | Prototype: 15 work days. Mass order: 20~25 work days | ||||
| Testing on products | Flying Probe Test, X-ray Inspection, AOI Test, functional test | ||||
| Quantity | Min quantity: 1pcs. Prototype, small order, mass order, all OK | ||||
| Files we need | PCB: Gerber files(CAM, PCB, PCBDOC) | ||||
| Files we need | Components: Bill of Materials(BOM list) | ||||
| Files we need | Assembly: Pick-N-Place file | ||||
| PCB panel Size | Min size: 0.25*0.25 inches(6*6mm) | ||||
| Max size: 20*20 inches(500*500mm) | |||||
| PCB Solder Type | Water Soluble Solder Paste, RoHS lead free | ||||
| Components details | Passive Down to 0201 size | ||||
| Components details | BGA and VFBGA | ||||
| Components details | Leadless Chip Carriers/CSP | ||||
| Components details | Double-sided SMT Assembly | ||||
| Components details | Fine Pitch to 0.8mils | ||||
| Components details | BGA Repair and Reball | ||||
| Components details | Part Removal and Replacement | ||||
| Component package | Cut Tape,Tube,Reels,Loose Parts | ||||
| PCB assembly | Drilling-----Exposure-----Plating-----Etaching & Stripping-----Punching-----Electrical Testing-----SMT-----Wave Soldering-----Assembling-----ICT-----Function Testing-----Temperature & Humidity Testing | ||||
1. Program and functional test and package by Free.
2. High quality: IPC-A-610E standard, E-test, X-ray, AOI test, QC, 100% functional test.
3. Professional service: PCB/FPC/Aluminium Making, SMT, DIP, Component Sourcing, OEM with 21 years experience.
4. Certifications: UL, 94v-0, CE, SGS, FCC, RoHS, ISO9001, ISO14001,IATF16949
Q: What files do you use in PCBA fabrication?
A: Gerber or Eagle, BOM listing, PNP and Components Position.
Q: Is it possible you could offer sample?
A: Yes, we can custom samples for your testing before mass production.
Q: How much time could I get the quotation after sent Gerber, BOM and test procedure?
A: Within 6 hours for PCB quotation and around 24 hours for PCBA quotation.
Q: How can I know the process of my PCBA production?
A: 7-10 days for PCB production and components purchasing, and 10 days for PCB assembly and Testing.
Q.What is the warranty?
The warranty is 2years.
