CircuitMedic
First-Aid Kits for Circuit Boards® 		A Circuit Technology Center Company
Haverhill, MA 01835 USA
www.circuitmedic.com

Circuit Tracks

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It's now easier than ever to repair damaged circuits. Circuit Tracks are rectangular-shaped conductors made of 99.9% pure CDA 11000 copper. These rectangular ribbons closely conform to the original conductor dimensions. The replacement Circuit Track is bonded in place using epoxy.

CDA 11000 is electrolytic tough pitch copper that is intentionally alloyed with oxygen to achieve the best combination of conductivity and capacity for being cold worked. Circuit Tracks are used for various applications, including repairing damaged conductors on circuit boards.

Total length 36", packaged in a small bobbin spool.

Specifications
PropertyValue
Alloy NameETP Copper
Chemical Composition99.90 Cu Min. /.04 O
Density (lbs./in.³).323
Electrical Conductivity (% IACS @ 68°F )100
Resistivity (Ω/circ. mil/ft)10.3
Approximate Melting Point (° F )1981
Tensile Strength Hard Temper (kpsi)55
Tensile Strength Soft Temper (kpsi)34
Yield Strength Hard Temper (kpsi)50
Yeild Strength Soft Temper (kpsi)12
Elongation Hard Temper (%)5
Elongation Soft Temper (%)36
Properties are nominal values and should not be
used for specification purposes. Elongation values
are generally size dependent.
Ordering
Part No. Description Part No. Description Packaging
115-5205 Circuit Track, .002" x .005" 115-5206 Circuit Track, .002" x .006"
115-5208 Circuit Track, .002" x .008" 115-5210 Circuit Track, .002" x .010"
115-5312 Circuit Track, .003" x .012" 115-5315 Circuit Track, .003" x .015"
115-5520 Circuit Track, .005" x .020" 115-5530 Circuit Track, .005" x .030"
115-5204 Circuit Track, .002" x .004"
CircuitMedic
First-Aid Kits for Circuit Boards® 		A Circuit Technology Center Company
Haverhill, MA 01835 USA
www.circuitmedic.com

Circuit Tracks

Circuit Track Repair Process

Circuit Track
Figure 1.
1. Remove the damaged section of the circuit using a knife. Scrape off any solder mask or coating from the ends of the remaining circuits. (See Figure 1.)

2. Clean the area, then apply a small amount of flux to the ends of the circuits on the circuit board. Tin both ends using solder and a soldering iron.

3. Select a Circuit Track to match the width and thickness of the circuit to be replaced and cut a length as needed.

Circuit Track
Figure 2.
4. Remove the invisible protective coating from both ends on the Circuit Track by gently abrading the top and bottom surfaces using an Abrader. Removal of the coating is required to ensure a good solder connection to the circuit board.

5. Place one end of the Circuit Track in position and hold it in place with high-temperature tape. (See Figure 2.)

6. Lap solder the taped end of the Circuit Track to the existing circuit using solder, flux, and a soldering iron.

Circuit Track
Figure 3.
7. Bend the Circuit Track as needed to match the shape of the missing circuit. (See Figure 3)

8. Lap solder the remaining end of the Circuit Track to the remaining circuit using solder, flux, and a soldering iron.

9. Clean the area, then coat the top and sides of the Circuit Track with epoxy as required.

Circuit Track
Figure 4.
10. For more information, see the guides at www.circuitrework.com/guides/guides.html.