• Home
  • AboutUs
  • News
  • Products
  • Projects
  • Service
  • Cooperation
  • ContactUs
SMT Pick and Place Machine
  • Home
  • AboutUs
    • CompanyPresidential SpeechHistoryCorporate CultureOrganization
  • News
    • TechnologyNews
  • Products
    • SMT LineSMT Assembly LineSMT Production LinePCB Assembly LineSMT Solutions
  • Projects
    • LED LightsLED TVSMT OEMSecurity IndustrySmart Phone5G Products
  • Service
    • After ServiceService ModeService Content
  • Cooperation
    • PartnersAgent
  • ContactUs

News

Technology
News

Surface-mount Technology History

From:    Author:PCB Assembly Line    Publish time:2019-10-21 14:02    Clicks:0
Surface-mount Technology History
 
A common SMT production line machines is SMT stencil printer, pick and place machine, reflow oven SMT loader unloader, SMT conveyor.  for led and high-mix SMT production manufacturing.
Surface mounting was originally called "planar mounting".
Surface-mount technology was developed in the 1960s and became widely used in the mid 1980s. By the late 1990s, the great majority of high-tech electronic printed circuit assemblies were dominated by surface mount devices. Much of the pioneering work in this technology was done by IBM. The design approach first demonstrated by IBM in 1960 in a small-scale computer was later applied in the Launch Vehicle Digital Computer used in the Instrument Unit that guided all Saturn IB and Saturn V vehicles.Components were mechanically redesigned to have small metal tabs or end caps that could be directly soldered to the surface of the PCB. Components became much smaller and component placement on both sides of a board became far more common with surface mounting than through-hole mounting, allowing much higher circuit densities and smaller circuit boards and, in turn, machines or subassemblies containing the boards.
Often only the solder joints hold the parts to the board; in rare cases parts on the bottom or "second" side of the board may be secured with a dot of adhesive to keep components from dropping off inside reflow ovens if the part has a large size or weight.Adhesive is sometimes used to hold SMT components on the bottom side of a board if a wave soldering process is used to solder both SMT and through-hole components simultaneously. Alternatively, SMT and through-hole components can be soldered on the same side of a board without adhesive if the SMT parts are first reflow-soldered, then a selective solder mask is used to prevent the solder holding those parts in place from reflowing and the parts floating away during wave soldering. Surface mounting lends itself well to a high degree of automation, reducing labor cost and greatly increasing production rates.
Conversely, SMT does not lend itself well to manual or low-automation fabrication, which is more economical and faster for one-off prototyping and small-scale production, and this is one reason why many through-hole components are still manufactured. Some SMDs can be soldered with a temperature-controlled manual soldering iron, but unfortunately, those that are very small or have too fine a lead pitch are impossible to manually solder without expensive hot-air solder reflow equipment. SMDs can be one-quarter to one-tenth the size and weight, and one-half to one-quarter the cost of equivalent through-hole parts, but on the other hand, the costs of a certain SMT part and of an equivalent through-hole part may be quite similar, though rarely is the SMT part more expensive.
 
❙ PCB Assembly Line Video

[Comments:0/Comment] [Bookmark] [Big Medium Small] [Print] [Close]
MoreNews Comment
Quick Comment
TITLE:
NAME
CONTENT
(*)

Related Comment
  • Highly Flexible PCB Assembly Line (0)
  • How To Optimize Your PCB Manufacturing Layout (0)
  • Top Production Trends in PCB Design (0)
  • Beginner’s Guide To PCB Design: What You Need To Know (0)
  • How To Choose the Right Thickness for Your PCB Prototype (0)
  • Tips and Tricks to Follow For a Quality PCB Layout : Part 1 (0)
  • A Quick Intro Guide to the PCB Assembly Process (0)
  • How To Select the Right PCB Materials: A Guide (0)
  • Everything You Need To Know About Prototype PCBs (0)
  • Top 5 Things To Know Before Designing a PCB (0)
  • How To Choose a PCB Prototype Fabrication Company (0)
  • PRINTED CIRCUIT BOARD MANUFACTURING (0)
  • LASER DIRECT IMAGING (LDI) IN PCB MANUFACTURING (0)
  • CASTELLATED MOUNTING HOLES IN PCB FABRICATION (0)
  • CASTELLATED MOUNTING HOLES IN PCB FABRICATION (0)
  • CASTELLATED MOUNTING HOLES IN PCB FABRICATION (0)
  • PCB Assembly Line (0)
  • Samsung SMT Assembly line (0)
  • Semi automatic SMT Production Line (0)
  • Good Quality PCB Assembly Line (0)
AboutUs
Company
Presidential Speech
History
Corporate Culture
Organization
News
Technology
News
Products
SMT Line
SMT Assembly Line
SMT Production Line
PCB Assembly Line
SMT Solutions
Projects
LED Lights
LED TV
SMT OEM
Security Industry
Smart Phone
5G Products
Service
After Service
Service Mode
Service Content
Copyright 2011 © SMT,Pick and Place Machine,SMT Assembly Line,SMT Machine,SMT Stencil Printer,SMT Reflow Oven,SMT Total Solution |CMSADMIN

Wave Soldering MachineFPC Feinforcement MachinePick and Place MachineSMT MachineYAMAHA Pick and Place MachineHanwha SMT MachineJUKI Pick and Place MachinePanasonic SMT MachineSMT Reflow OvenSMT Solution