3M 851 Green Circuit Board Tape

3M™Circuit Plating Tape 851 is a green polyester film tape with a thick adhesive of blended silicone and rubber. This tape is specifically designed for printed circuit board masking during electroplating, solder stripping and precious metal plating of fingers.

Product Features

• Temperature - up to 170°F /76°C 
• Polyester backing reduces stretch and recovery of tape associated with uneven stop-off line
• Thick adhesive coating reduces undercutting because adhesive blocks out solutions between fingers
• Specially designed adhesive that generally performs better when no ovens are used to heat tape and boards
• Tape must be firmly pressed down by equipment with rubber-covered rollers or a rubber-covered platen press. Hand rolling usually does not provide enough pressure. A vivid outline of the circuit leads usually indicates adequate pressure was used

Construction

• 3.6 Mil Total Thickness
• Roll Length - 72 yards

Specifications

• Tensile Strength (lb/in) - 27
• Elongation (%) - 124
• Steel Adhesion (oz/in) - 29