3M Greenback Printed Circuit Board Tape 851

3M Greenback Printed Circuit Board Tape 851 is a PCB tape designed specifically for demanding applications such as electroplating, solder stripping, PCB masking and conformal coating masking. Engineered with a durable green polyester film backing, it features a unique blended silicone and rubber adhesive that provides exceptional conformability. This reliable printed circuit board tape ensures clean masking with minimal undercutting. The adhesive formulation is optimised for applications where oven curing is not used.

3M Printed Circuit Board Tape 851 uses a polyethylene tape core instead of cardboard. The thick adhesive layer effectively prevents solution seepage between board fingers, making it an ideal choice for precision masking tasks, including during conformal coating processes. Its low-stretch polyester backing ensures an even and consistent stop-off line, reducing the risk of misalignment and rework.

• High-performance PCB tape with green polyester backing
• Ideal for high-temperature PCB applications
• Highly conformable, blended silicone/rubber adhesive
• Polyethylene core
• Suitable for conformal coating masking
• Polyester backing reduces stretch and recovery of tape

How to use 3M Greenback Printed Circuit Board Tape 851:

1. 3M Greenback Printed Circuit Board Tape 851 can be applied either by machine or by hand.
2. Ensure the tape is firmly pressed down using equipment with rubber-covered rollers or a rubber-covered platen press.
3. Check for a clear outline of the circuit leads—this indicates adequate pressure was applied.

Storage

Store 3M Greenback Printed Circuit Board Tape 851 in the original container at 16-27°C and 50% relative humidity.