SLIDE 1
USING SURFACE-MOUNT COMPONENTS IN AN EMBEDDED SYSTEMS LAB
ERIK BRUNVAND SCHOOL OF COMPUTING UNIVERSITY OF UTAH
USING SURFACE-MOUNT COMPONENTS IN AN EMBEDDED SYSTEMS LAB ERIK - - PowerPoint PPT Presentation
USING SURFACE-MOUNT COMPONENTS IN AN EMBEDDED SYSTEMS LAB ERIK - - PowerPoint PPT Presentation
USING SURFACE-MOUNT COMPONENTS IN AN EMBEDDED SYSTEMS LAB ERIK BRUNVAND SCHOOL OF COMPUTING UNIVERSITY OF UTAH Student Projects Fall 2014 Student Projects Fall 2014 SMD Packages http://www.microchip.com/ http://www.righto.com/ SMD
SLIDE 2
SLIDE 3
Student Projects
Fall 2014
SLIDE 4
SMD Packages
http://www.righto.com/ http://www.microchip.com/
SLIDE 5
SMD Packages
1x1mm
0402 1005 1608 2012 2520 3216 3225 4516 4532 5025 6332
1x1 cm
0603
Imperial code
01005
Metric code
0201 0402 0603 0805 1008 1206 1210 1806 1812 2010 2512
0.5x0.5in (500x500 mils) 0.1x0.1 in (100x100 mils) 0.01x0.01 in (10x10 mils) 0.1x0.1 mm Actual size comparison comparison
http://www.sbs4dcc.com https://blog.adafruit.com http://en.wikipedia.org/wiki/Surface-mount_technology
SLIDE 6
SMD IC packages
SOIC 1.27mm pin pitch (0.05”) SSOP/TSSOP 0.65mm pin pitch QFP/TQFP/LQFP 0.5mm pin pitch QFN/TQFN/LQFN 0.5mm pin pitch
SLIDE 7
Procedure - by hand
- 1. Design/Fab PCB
- 2. Apply solder/flux or
solder paste
- 3. Add components
- 4. Solder carefully using
soldering iron, drag soldering, or hot air
http://store.curiousinventor.com/guides/Surface_Mount_Soldering/
SLIDE 8
Procedure - by hand
- 1. Design/Fab PCB
- 2. Apply solder/flux or
solder paste
- 3. Add components
- 4. Solder carefully using
soldering iron, drag soldering, or hot air
hackaday.com https://www.youtube.com/watch?v=5uiroWBkdFY
SLIDE 9
Reflow Soldering
A soldering technique using solder paste and an oven Solder paste (mixture of flux and solder) is applied to the board Components are “nestled” into the paste The board is heated, the solder melts, and the components are secured to the board
http://store.curiousinventor.com/guides/Surface_Mount_Soldering/
SLIDE 10
Reflow Soldering
A soldering technique using solder paste and an oven Solder paste (mixture of flux and solder) is applied to the board Components are “nestled” into the paste The board is heated, the solder melts, and the components are secured to the board
http://www.wisegeek.org/what-is-a-circuit-board.htm http://capnstech.blogspot.com/
SLIDE 11
Reflow Soldering
http://www.idleloop.com/robotics/stencil/
SLIDE 12
Reflow Procedure
- 1. Design/Fab PCB
- 2. Cut solder stencil
- 3. Apply solder paste through
stencil
- 4. Add components
- 5. Bake in the oven
SLIDE 13
Procedure
- 1. Design/Fab PCB
EagleCAD, KiCAD, Altium, etc… Local PCB fabricators Or panel-share such as OSH Park
SLIDE 14
Procedure
- 1. Design/Fab PCB
EagleCAD, KiCAD, Altium, etc… Local PCB fabricators Or panel-share such as OSH Park
SLIDE 15
Procedure
- 2. Cut solder stencil
Solder or Paste layer on the PCB 2-4mm mylar Laser cutter Vinyl cutter
SLIDE 16
Procedure
- 2. Cut solder stencil
Solder or Paste layer on the PCB 2-4mm mylar Laser cutter Vinyl cutter
http://www.idleloop.com/robotics/stencil/
SLIDE 17
Procedure
- 3. Apply solder paste
through stencil Solder paste sticks to PCB pads
SLIDE 18
Procedure
- 4. Add components
Tweezers help An inspection scope also helps
http://www.idleloop.com/robotics/stencil/ https://www.stencilsunlimited.com/smt_stencils/smt_stencil_tutorial_page1.htm
SLIDE 19
Procedure
- 5. Bake in the oven
You can actually use a toaster oven or griddle A reflow oven has a more careful heat profile
http://en.wikipedia.org/wiki/Reflow_soldering
SLIDE 20
Whole Setup
Around $2,000-3,000 in equipment Huge improvement in the complexity / sophistication of HW projects in our senior capstone class
SLIDE 21
Contact / Info
Erik Brunvand elb@cs.utah.edu www.cs.utah.edu/~elb
http://store.curiousinventor.com/guides/Surface_Mount_Soldering/