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MG Chemicals 838AR-P - Carbon Conductive Pen

838AR-P pen dispenses an acrylic lacquer pigmented with conductive carbon. The cured traces are durable and corrosion resistant. They adhere well to plastics and most electronic substrates. The traces are flexible, but the product works best on a smooth, flat, hard surface. The valve tip opens when pressed against the surface, and the flow is controlled by squeezing the barrel. This pen repairs traces on keyboards, game controllers or remote controls. It is also good for making small connections, such as jumpers, through-holes, bridges, and links. It is great for drawing resistors too, and it can be used to increase the surface area of contacts by painting the area around them. Use this pen when high conductivity is not required. For applications requiring lower resistance, use the 841AR-P Nickel Conductive Pen or the 842AR-P Silver Conductive Pen.

Product Type: Conductive Coating

Application Area: Control Units, Printed Electronics

Compatible Substrates & Surfaces: Aluminum, Ceramic, Metal, Plastics, Wood

Features: Corrosion Resistant, Durable, Electrically Conductive, Electromagnetic Interference Shielding, Electromagnetic Shielding (EMI), Excellent Substrate Adhesion, Radio Frequency Shielding (RFI)

Chemical Family: Acrylics & Acrylates, Carbon Blacks

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Knowde Enhanced TDS

Identification & Functionality

Product Type

Features & Benefits

Key Attributes
  • Creates durable, reliable and conductive traces
  • Typical trace width: 1.5–2.0 mm
  • Dries in 1 minute at room temperature
  • Strong corrosion resistance
  • Does not contain toluene, xylene, or MEK

Applications & Uses

Compatible Substrates & Surfaces
Recommended Preparation
Clean the substrate with Isopropyl Alcohol, MG #824, so the surface is free of oils, dust, and other residues.
Application Instructions
  1. Shake pen vigorously until the ball moves freely inside.
  2. Hold pen at angle and depress tip against surface.
  3. Draw pen across surface while gently squeezing barrel.
  4. Let dry 1 min before handling or heat cure.
  5. Clean tip, replace cap and store tip up after use.

Properties

Physical Form
Physical Properties
ValueUnitsTest Method / Conditions
Density0.89g/mL
Typical Properties
ValueUnitsTest Method / Conditions
Approximate Linear Coverage74Minutes
Calculated VOC519g/L
Cure Times (at 22 ˚C)24Hours
Cure Times (at 65 ˚C)30Minutes
Dry to Touch1Minutes
Viscosity (at 25 ˚C)114cP
Cured Properties
ValueUnitsTest Method / Conditions
Resistivity6.9 x 10⁻¹Ω·cm
Service Temperature Range-40 to 120˚C
Uncured Properties
ValueUnitsTest Method / Conditions
Solids Content15%
Storage and Handling
Store between -5 and 22 ˚C in a dry area, away from sunlight (see SDS).
Cure Instructions

Allow to dry at room temperature for 24 hours, or after letting sit for 1 minute, cure the coating in an oven for 30 minutes @ 65 ˚C.

Regulatory & Compliance

Chemical Inventories

Packaging & Availability

Available Packaging
Cat. No. Packaging Net Vol. Net Wt.
838AR-P Pen 5 mL 4.44 g

 

Storage & Handling

Shelf Life
3 Years