SEMINAR ON

SURFACE MOUNT TECHNOLOGY

By-MARODE DNYANESHWAR D.

B.E.(E&C)

OUTLINE Surface Mount Technology Role of SMT Benefits Surface Mount Devices Advantages Challenges

Surface Mount Technology

SMT is a Technology that uses surface mount devices, which are often leadless and require small space.

Allows high-speed component mounting

and reduces PCB size. Supports Advance consumer products

( LCD color TV, video cameras & so on). Has the great advantage in portable

stereos, CD players.

ROLE OF SMT IN ELECTRONIC WORLD

Play a predominant role to increase area efficiency & the corresponding to the system volume.

Electrical and Mechanical features are only achievable with SMT.

Small light weight portable components are mount only by using SMT.

SMT entails making reliable interconnections on the board at great speed, in the smallest possible area.

BENEFITS OF SMT

• Reduction in package size.• Reduction in weight of product.• Noise Reduction.• Higher operating speed due to

shorter interconnections.

COMPONENT PLACEMENT SMD’s on both sides.

SMD’s on one side & discrete components on other sides.

Randomly distributed on either sides.

Processes used for placement of components

Screen Printing Method.

Glue Method.

SCREEN PRINTING METHOD

Paste Application on PCB by SCREEN PRINTING

Pick & Place of components by HP-180 & SP-120

Visual Inspection Manually

Reflow Process

GLUE METHOD

•Glue Application on PCB by HS-180•Pick & place of components by HP-180 & SP-120.•Visual Inspection Manually.•Reflow Process to cure Glue.•Wave Soldering Process.

MACHINES USED

SP 120 Manufactured by SiemensIt is multi headed machinePlacement speed is 7200 components/ hourEasy to used Window based Software

HS 180Manufactured by SiemensIt is single headed machinePlacement speed is 4200 components/hour

CHALLENGS

Need latest TechnologyRequires well trained workerComplications

Thank you