8 Layer Fr4 TG170 ENIG Electronic PCBA for Smart Home Main Board
♦ What is ENIG PCBA?
ENIG PCBA is the term for a printed-circuit board assembly whose bare board was finished with ENIG—Electroless Nickel Immersion Gold.
In other words, the PCB itself (before components are placed) receives a two-layer metallic coating:
3–6 µm of electroless-nickel plated directly on the copper pads to act as a diffusion barrier and solderable surface.
0.05–0.15 µm of immersion-gold deposited on top of the nickel to prevent oxidation and maintain a very flat, wire-bondable/solderable surface
.
Because the finish is extremely planar and corrosion-resistant, ENIG PCBA is common in high-reliability products such as smartphones, aerospace, medical and telecom equipment.
♦ DQS's PCB Assembly Capability
|
Item |
Normal |
Special | |||
|
SMT Assembly |
PCB(used for SMT) specification | Length and Width( L* W) | Minimum | L≥3mm, W≥3mm | L<2mm |
| Maximum | L≤800mm, W≤460mm | L > 1200mm, W>500mm | |||
| Thickness( T) | Thinnest | 0.2mm | T<0.1mm | ||
| Thickest | 4 mm | T>4.5mm | |||
|
SMT components specification | Outline Dimension | Min size | 0201(0.6mm*0.3mm) | 01005(0.3mm*0.2mm) | |
| Max size | 200 * 125 | 200 * 125 | |||
| component thickness | T≤15mm | 6.5mm<T≤15mm | |||
| QFP,SOP,SOJ (multi pins) | Min pin space | 0.4mm | 0.3mm≤Pitch<0.4mm | ||
| CSP/ BGA | Min ball space | 0.5mm | 0.3mm≤Pitch<0.5mm | ||
|
DIP Assembly |
PCB specification |
Length and Width( L* W) | Minimum | L≥50mm, W≥30mm | L<50mm |
| Maximum | L≤1200mm, W≤450mm | L≥1200mm, W≥500mm | |||
| Thickness( T) | Thinnest | 0.8mm | T<0.8mm | ||
| Thickest | 3.5mm | T>2mm | |||
♦ One-Stop Electronic Manufacturing Including
| PCB Prototype | Quick Turn PCB | Single-Sided PCB | Double-Sided PCB | Multilayer PCB | Rigid PCB |
| Flexible PCB | Rigid-Flex PCB | Rigid-Flex PCB | Aluminum PCB | Metal Core PCB | Thick Copper PCB |
| HDI PCB | BGA PCB | High TG PCB | PCB Stencil | Impedance Control PCB | PCB Assembly |
| High-Frequency PCB | Bluetooth Circuit Board | Automotive PCB | USB Circuit Board | Halogen-Free PCB | Antenna PCB |
♦ Core Competencies of DQS PCB Assembly