Premium 5 mil membrane switch spacer with 3M High Performance Acrylic Adhesive 200MP, featuring double-sided adhesion, polyester film carrier, and lay-flat PCK liners for precision die-cutting and industrial applications.
The 3M™ Membrane Switch Spacer 7945MP is a high-performance double-sided adhesive spacer designed for precision membrane switch applications. Featuring 3M™ High Performance Acrylic Adhesive 200MP, this 5 mil total thickness spacer is engineered to withstand the repeated stress of switch actuation over extended periods. The product consists of a 1 mil polyester film carrier with 2 mil acrylic adhesive applied to each side, providing excellent shear strength and resistance to slippage and edge lifting. The transparent design allows for precise placement and visibility during assembly operations.
This membrane switch spacer is constructed with double 4.2 mil 58# polycoated kraft (PCK) paper lay-flat liners that resist humidity, curling, tunneling, and buckling. These liners add dimensional stability for various die-cutting operations and enable improved rotary die-cutting at high speeds. The adhesive formulation is specifically designed to resist oozing at edges and die-cuts, facilitating faster part processing and minimal waste. The product offers excellent temperature resistance from -40°C to 204°C (-40°F to 400°F), making it suitable for challenging environmental conditions.
Ideal for membrane switch spacers, switch mounting, circuit layer assembly, metal dome placement, lead protection, and die-cut laminations, the 3M™ Membrane Switch Spacer 7945MP delivers outstanding adhesion to metal, polycarbonate, ABS, and polyester surfaces. With an 18-month shelf life and available in sheet configuration, this industrial-grade adhesive product meets the demanding requirements of aerospace, appliance, automotive, electronics, medical, and military applications. The spacer provides confidence through millions of actuations and maintains performance after exposure to humidity and hot/cold cycles.
Key Features
- 5 mil total thickness withstands repeated stress of switch actuation
- 1 mil polyester film carrier provides strength and structural stability
- 2 mil acrylic adhesive on each side delivers excellent shear strength
- Double 4.2 mil PCK paper liners resist humidity, curling, and buckling
- Temperature resistance from -40°C to 204°C for challenging environments
- Resists oozing at edges for faster part processing and minimal waste
- Excellent adhesion to metal, polycarbonate, ABS, and polyester surfaces
- 18-month shelf life with improved dimensional stability for die-cutting
Technical Specifications
| Specification |
Value |
| Product Number | 7945MP |
| Total Tape Thickness without Liner | 5 mil (0.13 mm) |
| Backing Material | Polyester Film (1 mil / 0.03 mm) |
| Adhesive Type | 3M High Performance Acrylic Adhesive 200MP |
| Adhesive Thickness | 2 mil (0.05 mm) on each side |
| Product Color | Transparent |
| Liner Material | 58# Polycoated Kraft Paper (PCK) |
| Liner Thickness | 4.2 mil (0.11 mm) double-sided |
| Liner Color | Tan |
| Maximum Operating Temperature | 204°C (400°F) |
| Minimum Operating Temperature | -40°C (-40°F) |
| Shelf Life | 18 months |
| Indoor/Outdoor Rating | Indoor/Outdoor |
| Smallest Saleable Unit | Sheet |
| Brand | 3M™ |
Order 3M Membrane Switch Spacer 7945MP Clear 5 mil Sheet at wholesale prices for companies and factories in Iraq and Middle East, get the best deals on bulk purchases, contact us today.
