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| Categories | PCB Board Design | 
|---|---|
| Place of Origin: | China | 
| MOQ: | Negotiable | 
| Price: | Negotiable | 
| Payment Terms: | T/T | 
| Supply Ability: | 100000pc/Month | 
| Delivery Time: | 4 Weeks | 
| Packaging Details: | PCB + Box | 
| Brand Name: | CUSTOM MADE | 
| Certification: | ISO/UL | 
| Keyword: | PCB Board Design | 
| PCB Boards: | POP Boards, Normal Boards | 
| Surface Finished: | HASL Pb Free Immersion Gold/Silver Osp,Immersion Gold+OSP | 
| Applications: | Automotive Electronics, Communications, Internet, Consumer Electronics, PCBA Circuit Board | 
| Materials: | High-Tg FR4, Rogers, Nelco, RCC, PTFE, M4, M6, TU862, TU872 | 
| Min Laser Hole: | 0.075mm | 
| Features: | High Reliability, Designability, Producibility, Testability | 
| Impedance Tolerance: | ±5% | 
| Payment Method: | T/T | 
| Whether to Support customization: | Support | 
| Logistics: | Accept customer specified logistics | 
| Company Info. | 
| TONGZHAN INDUSTRIAL LIMITED | 
| View Contact Details | 
| Product List | 
Blind - Hole Boards Carbon Ink PCB Board Design Testability Turnkey Assembly
Prototype PCB Assembly Description:
1. Quick-turn prototype PCB assembly.
2. SMT/SMD assembly.
3. Thru-hole assembly.
4. Mixed Technology (SMT/Thru-hole).
5. Turn-key assembly.
6. Consignment assembly.
7. RoHS-compliant lead-free assembly / Non-RoHS assembly.
Prototype PCB Assembly Parameters:
| Item | Technical Parameter | 
| Layer | 2-64 | 
| Thickness | 0.3-6.5mm | 
| Copper Thickness | 0.3-12 oz | 
| Min Mechanical Hole | 0.1mm | 
| Min Laser Hole | 0.075mm | 
| HDI | 1+n+1,2+n+2,3+n+3 | 
| Max Aspect Ratio | 20:01 | 
| Max Board Size | 650mm*1130mm | 
| Min Width/Space | 2.4/2.4mil | 
| Min Outline Tolerance | ±0.1mm | 
| Impedance Tolerance | ±5% | 
| Min PP Thickness | 0.06mm | 
| Bow &Twist | ≤0.5% | 
| Materials | FR4, High-Tg FR4, Rogers, Nelco, RCC, PTFE, M4, M6, TU862, TU872 | 
| Surface Finished | HASL, HASL Pb Free Immersion Gold/Tin/Silver Osp, Immersion Gold+OSP | 
| Special Capability | Gold Finger Plating, Peelable, Carbon ink | 
Prototype PCB Assembly Introduction:
In high-speed design, the characteristic impedance of controlled impedance boards and lines is one of the most important and common problems. First understand the definition of a transmission line: A transmission line consists of two conductors of a certain length, one for sending a signal and the other for receiving a signal (remember the concept of "loop" instead of "ground"). In a multilayer board, each trace is part of a transmission line, and the adjacent reference plane can act as a second trace or return. The key to a line being a "good" transmission line is to keep its characteristic impedance constant throughout the line.

                                 
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