PCB Surface
Quantity : 0 PCS-1000 Price : 1 USD/set ~ 300 USD/
PCB surface finish include: PCB plating finishes is a coating between a component and a bare board PCB. It is applied for two basic reasons: to ensure solderability, and to protect exposed copper circuitry. As there are many types of surface finishes, selecting the right one is no easy task, especially as surface mounts have become more complex and regulations such as RoHS and WEEE have changed industry standards.
Recently, the common surface PCB treatment technologies which GreensTone may use when manufacturing PCBs are HASL(hot air solder leveling), organic coating (OSP), electroless nickel/gold, immersion silver, immersion gold, etc.
The solder mask is mainly Liquid UV Photo-imageable Ink with green, red, black, yellow, white, matt black/green, bule, gray, etc. green should be the most commonly used one. The suggested soldermask clearance in GERBER is 2-4 mils.
The silkscreen layer is the top layer of the PCB and serves as a reference indicator for placing components on the PCB. The graphics and text on PCB, a circuit board is usually printed with a permanent non-conductive epoxy ink. The color is typically white. Screen printing is used to specify useful information on the PCB board, which can help users during the assembly. It is used to mark component values, part numbers, test points, polarity, etc.
PCB Surface Features
PCB surface finish Comparison of cost and solderability
Actual solderability: Electroplating nickel gold> HASL > OSP > ENIG >Immersion silver >Immersion tin
Cost: Electroplating nickel gold > ENIG > Immersion silver> Immersion tin > HASL > OSP.
The functions of the solder mask layer on the PCB board
Preventing short circuit from bridge connection in the soldering process
Preventing the physical breakage of a conductor circuit
Prevent short circuit between conductive lines and solder joints when proceeding reflow soldering, wave soldering, and manual welding
Preventing the copper layer from oxidation
Its high Insulating brings the possibility to the high density of PCB finish
Here are three main ways to add silkscreen coating on a PCB
Manual screen-printing: This is a process that can be used when line widths are greater than 7 mm and the registration tolerance is 5 mm.
Liquid Photo Imaging (LPI): This process provides more accuracy and legibility over manual screening and is used when line widths are greater than 4 mm
Direct Legend Printing (DLP): This is the most accurate way of adding a silkscreen, however, it is very expensive.
For more information about electronic manufacturing service china and turnkey pcb assembly, please feel free to contact us!
Contact : Tone Greens, +75 5 23 21 59 83
Good deal: buying from seller
We invite you to read our terms of use. You can also visit our FAQ section and see our information section on the risks associated with counterfeiting.
This page is about importers and exporters of PCB Surface Search in a category : Everything else / Bulk Search in a category : surface |
Thursday, February 06, 2025
▲VE-30RFM RX (Front / Rear) ▲VE-30RFM TX (Front / Rear) VE-30RFM HDMI to RF Matrix Extender is designed to convert HDMI signal to HD digital TV signal based on DVB-T CATV signal, it uses 64QAM mode to realize the HD digital TV signal conversion and transmit via coaxial cables for...
Meicheng Audio Video Co., Ltd.
- meicheng
- 23511 - New Taipei City
- 886 2 82280311
Friday, May 16, 2014
Quantity : 5000000 - Price : $0.50-5/pc
CNC Machining Description Company Profile: Fully equipped with advanced CNC machinery, we have rich experiences to manufacture precision machined parts, turned parts, milling parts as per the drawings to deliver you the top-notch products. Our manufacturing facilities are ready...
Xiamen Karo Co.,Ltd
- karoplastic
- 361002 - Xiamen
- 0086 592 5135406
Sunday, August 10, 2014
Quantity : as you nee - Price : USD 3500-88888
Advantages of Charcoal Briquette Making Machine: 1. 95% pelletizing rate 2. ISO & CE certification 3. decades in the field 4 fine wear resistance Location : , 450000 zhengzhou CITY, Contact : oina wang, +13 6 07 69 93 63
Henan Zhengzhou Yonghua Machinery
- olina1
- 450000 - zhengzhou CITY
- +13 6 07 69 93 63
![Secure payment](https://en.algomtl.com/images/side_paiement.jpg)