Home Soldering Georgia Institute of Technology CS 3651 – Prototyping Intelligent Appliances Materials - Soldering Irons – Conventional Temperature Controlled More expensive but not unaffordable Power.
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Transcript Home Soldering Georgia Institute of Technology CS 3651 – Prototyping Intelligent Appliances Materials - Soldering Irons – Conventional Temperature Controlled More expensive but not unaffordable Power.
Home Soldering
Georgia Institute of Technology
CS 3651 – Prototyping
Intelligent Appliances
Materials - Soldering Irons – Conventional
Temperature Controlled
More expensive but not unaffordable
Power controlled
Watt rating
15W about right for small electronics – even a bit hot in some
cases
Some are switchable
Battery Powered
Allegedly about 15W effectively
Portable, no cord, light
Heat conductive tip lowers risk of burns
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Materials – Soldering Irons (cont.)
Cold Heat
Activated when low resistance on the tip
Very heat conductive material on the tip – runs small current
until connection, then higher current
Electrical resistance of solder and tip causes heat
Different technique
Battery powered
Only hot when soldering or immediately after
Not good for desoldering
Fragile
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Materials – Solder – Kinds of Solder
Cores
Flux
Improves flow
Prevents Corrosion
Can form salt – “no clean”
Types
Acid
Metalworking
Can have poisonous vapors
Rosin
Common
Electronics
Water-Soluble
Environmentally responsible
Can be corrosive
Removal
More active, more salt
Easier to remove
Flux-free
Rare – mostly research, manufacturing
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Kinds of Solder (cont.)
Lead
Slower solidifying
Lowers melting temperature
Reliability
Poisonous
RoHS
Size
Chemical ratio
Unspecified and 60/40 or
63/37 -> likely tin / lead
Otherwise, typically not
specified or materials named
because many other
combinations exist
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Materials – Accessories
Grips
Soldering involves attaching two metal parts together – so
there will always be 4 parts involved:
Object A
Object B
Solder
Soldering iron
Solution: stabilize at least 2 of them (or 3?)
Pliers
Chip Clips
Vice Grip
“Helping Hands”
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Accessories (cont.)
Surface
Sponge
Mousepad
Heat Sink / Clip
Stands
Extension cord (!)
Note: low wattage
Tips
Size/Shape
Wattage
Connection
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Concepts
Tinning the iron
When first using the iron or when coating is wearing off
Protects the tip from corrosion
Better heat flow
Too Much Heat
Melt the solder
May need to prepare surfaces
Result not as solid, but often good enough
Accessories
Tips
Lower Power
Electrostatic discharge
Everyone seen anti-static bags? Static + electronics = bad
Try to avoid generating it (no wool socks, etc)
Anti-static wrist straps
Don’t touch the iron!
Many irons are already grounded
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You can do it!
The end
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