ESD Determination Methods for INT 702

INTERTRONICS INT 702 Anti Static Polyimide Masking Tape is tested for the generation of static charges.

1) ESD During Roll Unwind

Procedure
A roll of INT 702 (25.4mm wide and 0.025mm film thickness) is mounted in a standard tape dispenser. The free end of the roll is held in a hand and the roll is unwound manually. The minimum unwind speed is 300mm/s. Using a 3M 703 static meter, the resulting static charge (if any) is measured.

Conditions
Temperature: 23°C +/- 2°C
Relative humidity: 50% +/- 2%
Distance from static meter: 50mm

Result
Maximum 5 Volts

Procedure
A section of INT 702 (25.4mm x 300mm) is applied to a clean stainless steel plate. The free end of the tape is then held and manually the tape is removed from the plate at a minimum speed of 300mm/s and at angles of between 90° and 180°. The resulting static charge (if any) on the plate is measured.

Conditions
Temperature: 23°C +/- 2°C
Relative humidity: 50% +/- 2%
Distance from static meter: 50mm

Result
Maximum 5 Volts

Procedure
A section of INT 702 (25.4mm x 300mm) is applied to the gold fingers of a printed circuit board (pcb). The free end of the tape is then held and manually the tape is removed from the plate at a minimum speed of 300mm/s and at angles of between 90° and 180°. The resulting static charge (if any) on the plate is measured.

Conditions
Temperature: 23°C +/- 2°C
Relative humidity: 50% +/- 2%
Distance from static meter: 50mm

Result
Maximum 5 Volts

Procedure
A section of INT 702 (25.4mm x 300mm) is applied to the centre area of a pcb. The free end of the tape is then held and manually the tape is removed from the plate at a minimum speed of 300mm/s and at angles of between 90° and 180°. The resulting static charge (if any) on the plate is measured.

Conditions
Temperature: 23°C +/- 2°C
Relative humidity: 50% +/- 2%
Distance from static meter: 50mm

Result
Maximum 5 Volts