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Description for 3M 7993MP Membrane Switch Spacer
Single side spacers aid in the construction of membrane switch circuitry, i.e. to protect leads, hold domes in place, or build your own spacer.Chemical Resistance Excellent, Chemical Resistance: Mild acids, Chemical Resistance: Excellent Solvent, Germicidals, Alkalies, Oil, Gasoline, Kerosene, JP-4 fuel, Cleaning solutions Application Type Bond, Laminating 1 Part or 2 Part 1 Part Material Form Sheet Substrate Aluminum, PET, Metal, Plastic, Polycarbonate, Polyester, Stainless Steel Industry Construction of membrane switch circuitry, i.e. to protect leads, hold domes in place, or build your own spacer Manufacturer 3M Chemistry Hi-Performance Acrylic Ozone Resistance Ozone resistance Oxidation Resistance Oxidation resistance High Temperature Resistance (°C) 149
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Peel Strength Test Methods
| Peel Strength | Type | Substrate | Test Time | Test Temperature | Test Method |
|---|---|---|---|---|---|
| 40 (oz./in.) | 90° Peel Strength | PET/Stainless Steel | 20 min | ASTM D3330 | |
| 36 (oz./in.) | 90° Peel Strength | PET/Aluminum | 20 min | ASTM D3330 | |
| 36 (oz./in.) | 90° Peel Strength | PET/PET | 20 min | ASTM D3330 | |
| 38 (oz./in.) | 90° Peel Strength | PET/Polycarbonate | 20 min | ASTM D3330 | |
| 68 (oz./in.) | 90° Peel Strength | PET/Stainless Steel | 4,320 min | 22°C | ASTM D3330 |
| 64 (oz./in.) | 90° Peel Strength | PET/Aluminum | 4,320 min | 22°C | ASTM D3330 |
| 46 (oz./in.) | 90° Peel Strength | PET/PET | 4,320 min | 22°C | ASTM D3330 |
| 51 (oz./in.) | 90° Peel Strength | PET/Polycarbonate | 4,320 min | 22°C | ASTM D3330 |
| 82 (oz./in.) | 90° Peel Strength | PET/Stainless Steel | 4,320 min | 70°C | ASTM D3330 |
| 79 (oz./in.) | 90° Peel Strength | PET/Aluminum | 4,320 min | 70°C | ASTM D3330 |
| 72 (oz./in.) | 90° Peel Strength | PET/PET | 4,320 min | 70°C | ASTM D3330 |
| 62 (oz./in.) | 90° Peel Strength | PET/Polycarbonate | 4,320 min | 70°C | ASTM D3330 |
Tensile Strength Test Methods
| Tensile Strength | Test Temperature | Test Method |
|---|---|---|
| 3,609 psi | 22°C | ASTM D2370 |
Moisture/Humidity Resistance Test Methods
| Moisture/Humidity Resistance | Test Method |
|---|---|
| Moisture resistance | |
| 7 (days) | |
| Humidity Resistance |
Dielectric Constant Test Methods
| Dielectric Constant | Temperature | Test Method |
|---|---|---|
| 2.77 | 22°C | ASTM D150 |
Dielectric Strength Test Methods
| Dielectric Strength | Test Method |
|---|---|
| 1,700 V/mil | ASTM D149 (Short time method (air)) |
Dissipation Factor Test Methods
| Dissipation Factor | Temperature | Test Method |
|---|---|---|
| 0.01200 | 22°C | ASTM D150 |
Insulation Resistance Test Methods
| Insulation Resistance | Test Method |
|---|---|
| 6.5 x 10(12) (Ohms) | Mil-I-46058C (100VDC, 60 sec.) |
Surface Resistivity Test Methods
| Surface Resistivity | Temperature | Test Method |
|---|---|---|
| > 5.6e16 (Ohms) | 22°C | ASTM D257 |
Volume Resistivity Test Methods
| Volume Resistivity | Temp (°C) | Test Method |
|---|---|---|
| 2.7e15 (Ohm-cm) | 22°C | ASTM D257 |
Coefficient of Thermal Expansion (CTE) Test Methods
| Coefficient of Thermal Expansion (CTE) | CTE Temperature (°C) | CTE Test Method |
|---|---|---|
| 4.5e-4 (M/M/°C) | 25 to 175°C | ASTM D696 |
