MG Chemicals Carbon Conductive Pen

Q: Will this work to coat the non-working rubber buttons on a remote control

Yes, this worked great. First, clean the circuit board where the contacts are using Isopropyl alcohol. I also used Iso to clean off the rubber dot, which is usually a conductive carbon substance. Then apply the *carbon* version of this product to the black dot. Cover the whole surface and let it dry completely before re-assembling.

Q: Can this be used to repair a broken strip in a car rear defogger?

I just tested a 1/2" long x1/8" wide strip on a piece of pyrex glass and got 0 resistance for that length. It seems to conduct well for a short distance and stuck to the glass very well. I hope this helps.

Q: Does it work for making a PCB?

In my opinion, it's far from the ideal for making your own PCB. I can see it being used for prototyping of low voltage/low current circuits.This particular compound is based on nickel, which is not a as conductive as copper.This pen would work fine for the small repairs like cuts or tears in the existing PCB traces. BTW, there's a more conductive version of this pen which is based on silver.Aside from conductivity issue, there's an issue of securing parts to PCB. I,also, doubt you can solder to the trace drawn with this pen.

Q: Is this pen good for making a jumper on a circuit board?

Yes, it's great for that but even the carbon conductive (lowest quality) pen would work for that

Product ID: 733417964

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⚡0.46Ω ultra-low resistance

⏱️Dries to touch in minutes

🖊️1.0mm precision tracing width

Frequently Bought Together

MG Chemicals 838AR-P Total Ground Carbon Conductive Pen, 4g

CaiKot 44, Conductive Silver/Carbon Coating for most surfaces

Description

⚡ Sketch your future with conductive confidence!

RAPID DRYING FORMULA - Get your projects moving fast—dries to touch in minutes, minimizing downtime and maximizing productivity.
PRECISION CONDUCTIVITY - Draw ultra-reliable, low-resistance circuits with 0.46Ω volume resistance for flawless connections.
EFFORTLESS FLOW CONTROL - Innovative valve tip and soft tube design let you control paint flow precisely—no mess, no waste.
SLEEK 1 0 MM TRACE WIDTH - Create clean, professional-grade conductive paths with a fine 1.0mm tracing width for detailed prototyping.
DURABLE CORROSION RESISTANT - Built with high-purity carbon black and acrylic polymer for long-lasting, corrosion-proof conductivity.

The MG Chemicals Carbon Conductive Pen delivers a fast-drying, durable, and corrosion-resistant conductive trace with ultra-low 0.46Ω resistance and a precise 1.0mm line width—perfect for professional prototyping, repairs, and maker projects demanding reliable electrical connections.

Specifications

Manufacturer	MG Chemicals
Part number	838AR-P
Item Weight	11 g
Product Dimensions	7.62 x 2.54 x 20.32 cm; 11 g
Size	5 mL
Color	carbon
Material	Carbon Black
Power source type	AC
Number Of Pieces	1
Measurement System	Metric
Specific Uses For Product	Professional
Batteries Included	No
Batteries Required?	No
Item Dimensions LxWxH	7.6 x 2.5 x 20.3 cm

Have a Question? See What Others Asked

Will this work to coat the non-working rubber buttons on a remote control

Can this be used to repair a broken strip in a car rear defogger?

Does it work for making a PCB?

Is this pen good for making a jumper on a circuit board?

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Good experience, but the tracking updates could be better.

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