SOLDERINGScarlett Montanaro

What is Solder?

Mixture of Tin and Lead• Electrical- 63%, 37%• Plumber- 50%, 50%

Lead Free Solder• Sn-93%, Ag-7%

Used to join to pieces of metal togetherLow Melting Point

Flux and Tinning

FLUX TINNING

Cleans the oxide off the circuit/components

Helps the solder stick to the metal

Putting solder onto the tip of the soldering iron

Helps to clean the soldering iron which helps the solder stick

Soldering vs. Brazing vs. Welding

•Differs in how much heat is used

•The more heat, the stronger the product is

•Welding uses the most heat and is strongest, soldering uses the least heat and is weakest

Reading Resistors

Black – 0Brown – 1Red – 2Orange – 3Yellow – 4Green – 5Blue – 6Violet – 7Gray – 8White – 9

Silver +/- 10 %Gold +/- 5 %

1. The Silver/ Gold Band should be on the right

2. Read left to right

3. The first two colors are just the numbers they correspond with

4. The third band is the multiple of 10 you multiply the first two numbers by

5. The gold/silver tell the accuracy

Green, Brown, Orange, Gold•Green = 5•Brown = 1•Orange = x103

51000 ohms +/- 5 %