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.
|