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Conductive Adhesives for Electronics
An alternative to solder, these flexible, silver-filled adhesives accommodate joint movement. Use them to bond electrical components and repair circuits.
Epoxy adhesives are two-part adhesives that need to be mixed together. The size listed is the combined total of the two parts.
Thermoplastic adhesives are one-part adhesives that don’t need to be mixed. Dry to the touch and faster and easier to apply than two-part adhesives, they’re best for use on automated assembly lines. Often used to join solar cells in solar panels, these adhesives make instant electrical connections without flux at lower temperatures than soldering. Since they attach to solar cells with heat and slight pressure, they limit stress cracks that can form when soldering. These adhesives can also be used as a bridge between multiple solar panels.
Adhesives that meet ASTM E595, a standard used by NASA, produce almost no volatile emissions that could damage sensitive electronics, even in a vacuum.
Container | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mfr. Model No. | Size, fl. oz. | Net Weight, oz. | Type | Surface Resistivity, ohms-cm | Begins to Harden | Reaches Full Strength | Thermal Conductivity, W/m-K | Mix Ratio | Consistency | Max. Temp., °F | Specifications Met | For Joining | Each | |
Loctite® Adhesives | ||||||||||||||
| 2902 | __ | 0.09 | One-Time-Use Packet, Syringe | 1 × 10-3 | 60 min. | 24 hrs. | 2.99 | 100:6 | Paste | 230° | ASTM E595 | Ceramic, Glass, Metal | 00000000 | 000000 |
| 2902 | __ | 0.35 | One-Time-Use Packet, Syringe | 1 × 10-3 | 60 min. | 24 hrs. | 2.99 | 100:6 | Paste | 230° | ASTM E595 | Ceramic, Glass, Metal | 00000000 | 000000 |
Adhesives | ||||||||||||||
| __ | __ | 0.09 | One-Time-Use Packet | 5 × 10-2 | 3 hrs. | 24 hrs. | 1.55 | 1:1.15 | Paste | 230° | __ | Ceramic, Glass, Metal | 0000000 | 00000 |
| __ | 0.5 | __ | Can | 4 × 10-4 | 4 hrs. | 5 days | 7.93 | 1:1 | Paste | 265° | __ | Metal | 0000000 | 000000 |
| __ | 0.5 | __ | Can | 9 × 10-5 | 4 hrs. | 5 days | 7.9 | 1:1 | Paste | 175° | ASTM E595 | Ceramic, Glass, Metal | 00000000 | 000000 |
| __ | 1 | __ | Can | 4 × 10-4 | 4 hrs. | 5 days | 7.93 | 1:1 | Paste | 265° | __ | Metal | 0000000 | 000000 |
| __ | 1 | __ | Can | 9 × 10-5 | 4 hrs. | 5 days | 7.9 | 1:1 | Paste | 175° | ASTM E595 | Ceramic, Glass, Metal | 00000000 | 000000 |
| Lg. | Wd. | Thick. | Melting Temp., °F | Max. Temp., °F | Surface Resistivity, ohms-cm | Begins to Harden | Reaches Full Strength | Thermal Conductivity, W/m-K | Consistency | For Joining | Each | |
Strip with Adhesive on One Side | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 12" | 1/16" | 0.002" | 250° | 300° | 1 × 10-4 | 5 sec. | 5 sec. | 12 | Film | Metal | 00000000 | 00000 |
Conductive Glue-on-a-Roll
Attach EMI/RFI shields and gaskets to electronics housings—these rolls are loaded with conductive fibers. Also known as adhesive transfer tape, they have a thin film of pressure-sensitive glue on a peel-away liner. Unlike screws, they won’t leave gaps for EMI to get in. They’re also more conformable than tape with adhesive on both sides.
Conductive Surface Filler Pens for Electronics
Dispense ready-to-use conductive liquid to fill pits and small gaps on circuit board components. These pens are also used to sketch and repair conductive pathways.
Product labeling requirements restrict sales to the listed areas.
Carbon acrylic pens should be used where only a small amount of conductivity is needed, such as circuit boards in keyboards. Their high surface resistivity only allows a small current to pass.
Nickel acrylic pens are best for general purpose repairs, such as bridges and traces in printed circuit boards. They have a medium surface resistivity, so they're a good balance between carbon acrylic and silver epoxy pens.
Silver epoxy pens are the most versatile—use them for any type of repair as well as for repairs that require excellent conductivity, such as connecting through holes on circuit boards without adding jumpers, wiring, or solder. Since they have the lowest surface resistivity, they allow the most current to pass.
Tip | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Container Size, fl. oz. | Dia. | Shape | Begins to Harden, min. | Reaches Full Strength | Surface Resistivity, ohms/sq. | Consistency | Max. Thick. | For Use Outdoors | Temp. Range, °F | Color | For Use On | Cannot Be Sold To | Each | |
Carbon Acrylic | ||||||||||||||
| 0.2 | 0.06" | Point | 2 | 24 hrs. | 100 | Thin Liquid | 0.003" | Yes | -40° to 245° | Black | Plastic | Canada | 0000000 | 000000 |
Nickel Acrylic | ||||||||||||||
| 0.2 | 0.06" | Point | 2 | 24 hrs. | 0.49 | Thin Liquid | 0.004" | Yes | -40° to 245° | Gray | Plastic | Canada | 0000000 | 00000 |
Silver Epoxy | ||||||||||||||
| 0.2 | 0.03" | Point | 3 | 60 min. | 0.050 | Thin Liquid | Not Rated | No | -65° to 300° | Silver | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Titanium | Outside United States and Canada | 0000000 | 00000 |
Conductive Surface Fillers for Electronics
A high silver content allows these surface fillers to conduct electricity and heat. Use them to fill gaps and rebuild missing material on electrical connections or to assemble new components. They come as two parts. The size listed is the combined total of the two parts.
Volume resistivity measures how well a material opposes the flow of electricity. The lower the rating, the more electricity it conducts.
Thermal conductivity measures a material’s ability to transfer heat. The higher the rating, the more heat it transfers.
Container | Temp. Range, °F | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mfr. Model No. | Size, fl. oz. | Net Weight, oz. | Type | Begins to Harden | Reaches Full Strength | Thermal Conductivity, W/m-K | Volume Resistivity, ohms-cm | Mix Ratio | Min. | Max. | For Use On | Each | |
Loctite® Surface Fillers | |||||||||||||
| 3888 | __ | 0.09 | One-Time-Use Packet | 90 min. | 24 hrs. | 1.44 | 0.001 | 100:6 | -40° | 170° | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Titanium, Polycarbonate Plastic | 0000000 | 000000 |
Surface Fillers | |||||||||||||
| __ | __ | 0.09 | One-Time-Use Packet | 90 min. | 24 hrs. | 6.05 | 0.009 | 100:6 | -75° | 250° | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Titanium, Ceramic, Glass | 0000000 | 00000 |
| __ | __ | 0.35 | One-Time-Use Packet | 90 min. | 24 hrs. | 6.05 | 0.009 | 100:6 | -75° | 250° | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Titanium, Ceramic, Glass | 0000000 | 000000 |
| __ | 0.5 | __ | Jar | 4 hrs. | 5 days | 5.77 | 0.0004 | 1:1 | Not Rated | 300° | Aluminum, Brass, Copper, Steel, Stainless Steel | 0000000 | 000000 |
| __ | 1 | __ | Jar | 4 hrs. | 5 days | 5.77 | 0.0004 | 1:1 | Not Rated | 300° | Aluminum, Brass, Copper, Steel, Stainless Steel | 0000000 | 000000 |
Heat-Transfer Epoxy Potting Compounds
Formulated to draw heat away from sensitive electronic components, these potting compounds have higher thermal conductivity than standard potting compounds. Use them to encase electronic assemblies for protection from dust, chemicals, moisture, mechanical shock, and vibration. Rigid and wear resistant, epoxies are the strongest of the potting compounds. They have excellent chemical and moisture resistance, withstand a wide range of temperatures, and provide excellent electrical insulation.
Cartridge potting compound requires a gun and mixer nozzle (each sold separately) to dispense.
Dry Time | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Container Size, fl. oz. | Consistency | Touch, min. | Overall, hrs. | Dielectric Strength, V/mil | Thermal Conductivity, W/m-K | Temp. Range, °F | For Use On | Color | Each | |
| 1.7 | Thick Liquid | 15 | 8 | 520 | 1.01 | -40° to 210° | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Silver, Titanium, Plastic, Composites, Fiberglass | Black | 0000000 | 000000 |
Epoxy Potting Compounds
Encase electronic assemblies in a layer of epoxy for protection from dust, chemicals, moisture, mechanical shock, and vibration. The strongest of the potting compounds, epoxies are rigid and wear resistant. They have excellent chemical and moisture resistance, withstand a wide range of temperatures, and provide excellent electrical insulation. All require a mixer nozzle and gun to dispense.
Loctite® ES1001™, ES1902™, and ES2500™ come with a mixer nozzle.
Dry Time | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mfr. Model No. | Container Size, fl. oz. | Consistency | Touch, min. | Overall, hrs. | Dielectric Strength, V/mil | Thermal Conductivity, W/m-K | Temp. Range, °F | Specifications Met | For Use On | Color | Each | |
| ES1001 | 1.7 | Thick Liquid | 60 | 24 | 1,100 | 0.29 | -10° to 220° | __ | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Plastic, Ceramic, Glass | Black | 0000000 | 000000 |
| ES2500 | 1.7 | Thin Liquid | 10 | 16 | 410 | 0.28 | -40° to 220° | UL 94 HB | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Plastic, Ceramic, Glass | Black | 0000000 | 00000 |
| Dispensing Gun for 1.7 fl. oz. Cartridges | 00000000 | Each | 000000 |
Heavy Duty EMI/RFI Shielding Coatings for Electronics
Coat electronics for durability in tough conditions while blocking EMI/RFI signals. Made of epoxy mixed with silver-coated copper, these coatings are stronger than acrylic EMI/RFI coatings. They are rigid enough to withstand the wear of access panels and industrial cabinets. You can also use them in engine compartments because they resist damage from high temperatures and chemicals. Also known as conductive paint, they shield your parts from interference that could cause circuit malfunction and data loss. Mix the two parts of these compounds together and paint them on components. These coatings cannot be sold to Canada due to product labeling requirements.
Dry Time | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Container Size, fl. oz. | Consistency | Touch, min. | Overall, hrs. | Interference Reduction @ Frequency | Surface Resistivity | Temperature Range, °F | Heating Requirements to Reach Full Strength | For Use On | Color | Cannot Be Sold To | Each | |
| 27 | Thin Liquid | 5 | 4 | 55 dB @ 1 GHz | 0.31 ohms/sq. | -40° to 245° | 4 hrs. @ 150° F | Aluminum, Steel, Stainless Steel, Ceramic, Glass, Plastic, Chrome, Galvanized Steel | Brown | Canada | 0000000 | 0000000 |