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3M™ MicroTouch™ System SCT3250EX 5"-8"

 
3M(TM) MicroTouch(TM) System SCT3250EX 5-8 inch
3M(TM) MicroTouch(TM) System SCT3250EX 5-8 inch
The 3M™ MicroTouch™ System SCT3250EX (surface capacitive touch technology) provides fast, accurate and reliable touch response with operation unaffected by on-screen contaminants and offers premium optical characteristics.
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23 Results (Displaying results 1-15)
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3M IDDiagonal SizeControllerAspect RatioView Area X (metric)View Area Y (metric)
980003255676.71 InchSerialStandard137.16 mm101.09 mm 
980003255186.71 InchNoneStandard137.16 mm101.09 mm 
980003255596.71 InchSerialStandard137.16 mm101.09 mm 
980003270197.13 InchSerialWide154.43 mm94.74 mm 
980003323816.95 InchSerialStandard144.83 mm101.09 mm 
980003312507.13 InchUSBStandard154.31 mm94.72 mm 
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980003309225.93 InchNoneStandard 
980003293386.71 InchUSBStandard137.16 mm101.09 mm 
Where to Buy
980003403016.75 InchUSB (HID)Standard120 mm91.19 mm 
980003293466.71 InchUSBStandard137.16 mm101.09 mm 
980003304197.13 InchNoneWide154.43 mm94.74 mm 
980003323736.95 InchNoneStandard 
980003255836.71 InchSerialStandard137.16 mm101.09 mm 
980003404266.75 InchSerialStandard120 mm91.19 mm 
980003309305.93 InchUSBStandard 
23 Results (Displaying results 1-15)
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Anti-GlareEtch
Aspect RatioStandard, Wide
Cable Exit3:00, 8:00
Cable Length8 Inch, 4 Inch, 6 Inch, 12 Inch, 4.27 Inch
Cable Length (metric)101.6 mm, 203.2 mm, 152.4 mm, 108.46 mm, 304.8 mm
Cables Available7310101, 7312256, 7310101, Incl w/Cntrlr
Cable Termination5 pin, SMT
ControllerSerial, USB (HID), USB, None
Controllers AvailableIncluded (EXII-7720SC/98-0003-2217-6), EXII-7710UC/98-0003-2216-8, EXII-7720SC/98-0003-2217-6, EXII-7730HC/98-0003-2813-2, Included (EXII-7760UC/98-0003-2814-0), None, EXII-17xx, EXII-57xx
Diagonal Size7.13 Inch, 7.94 Inch, 5.93 Inch, 6.95 Inch, 6.71 Inch, 7.53 Inch, 6.75 Inch
Diagonal Size (metric)181.06 mm, 176.62 mm, 170.43 mm, 181.1 mm, 191.2 mm, 201.6 mm, 171.5 mm
EU RoHS CompliantYes
Glass Thickness0.125 Inch
Glass Thickness (metric)3.18 mm
Outer Area D7.94 Inch, 7.77 Inch, 7.53 Inch
Outer Area D (metric)201.6 mm, 201.68 mm, 197.34 mm, 191.26 mm
Outer Area X6.685 Inch, 6.31 Inch, 6.69 Inch, 5.334 Inch, 6.01 Inch
Outer Area X (metric)152.654 mm, 169.8 mm, 169.93 mm, 160.32 mm, 152.65 mm, 135.49 mm
Outer Area Y4.28 Inch, 4.14 Inch, 4.53 Inch
Outer Area Y (metric)108.69 mm, 115.06 mm, 105.16 mm, 108.71 mm
Precision Area Diagonal6.59 Inch, 6.36 Inch, 6.75 Inch
Precision Area Diagonal (metric)167.36 mm, 161.54 mm, 171.45 mm, 171.51 mm
Precision Area Height3.54 Inch, 3.78 Inch
Precision Area Height (metric)95.98 mm, 89.92 mm, 89.99 mm, 96.01 mm
Precision Area Width5.75 Inch, 5.12 Inch, 5.4 Inch
Precision Area Width (metric)146.05 mm, 137.1 mm, 146 mm, 130.05 mm
Product StatusAlternate Product (Lead Times Apply), Recommended
Touch Technology3M Surface Capacitive
View Area X4.724 Inch, 5.7 Inch, 5.4 Inch, 6.08 Inch
View Area X (metric)154.31 mm, 137.21 mm, 154.43 mm, 137.16 mm, 144.83 mm, 120 mm
View Area Y3.59 Inch, 3.98 Inch, 3.73 Inch
View Area Y (metric)101.09 mm, 94.74 mm, 94.72 mm, 91.19 mm

How Surface Capacitive Technology Works (Flash)

Surface Capacitive versus Resistive Technology Comparison (PDF 1.15 MB)

Touchscreen Technologies

With over 150 patents related to touch technologies, 3M Touch Systems expertise in this industry is extensive and ever increasing.


Surface capacitive touch technology

Surface capacitive touch technology is one of the most established touch interfaces available today. Pioneered by MicroTouch Systems in the mid-1980s, surface capacitive technology is the preferred solution for public-access applications in contaminant-prone environments.


Materials

One of 3M Touch Systems core capabilities are the coatings used to create MicroTouch ClearTek II touch sensors. These coatings provide surface durability, anti-glare optics, and scratch resistance.

Hard Coat

The 3M MicroTouch ClearTek hard coat was formulated by 3M Touch Systems chemical engineers and is chemically bonded to the touch sensor's glass substrate to provide premium protection of the scratch-prone ITO conductive coating. The ClearTek coat also provides anti-glare characteristics and enhances the light transmission value to 91.5%.

Top Coat

3M Touch Systems applies a top coat to each ClearTek II touch sensor that fills in the relatively rough surface of the glass substrate. This top coat reduces the surface energy of the touch surface which reduces the likelihood of sharp objects scratching the ClearTek hard coat and the ITO conductive coating. Also, the lower surface energy makes the surface easier to clean, minimizes contaminants adhering to the surface and liquids tend to bead up and flow easier off the screen.

Adhesive

3M's expertise in adhesive chemistry has created a conductive adhesive tail bond unmatched in the industry, which completely removes the need for traditional soldering and provides a robust electrical/mechanical connection.

Anti-Glare

The 3M MicroTouch ClearTek hard coat was formulated by 3M Touch Systems chemical engineers and is chemically bonded to the touch sensor's glass substrate to provide premium protection of the ITO conductive coating. The ClearTek coat also provides anti-glare characteristics and enhances the light transmission value to 91.5%.


Manufacturing

3M is well known for its manufacturing expertise and 3M Touch Systems applies that expertise to producing world-class touch products.

Surface Capacitive Sensors

The 3M™ MicroTouch™ Sensor SCT3250 product line is produced by a flexible, high volume, vertically-integrated manufacturing process:

  • Large glass sheets are converted at the 3M glass processing facility into individual glass panels to meet customer size and quantity requirements. This is a key component for 3M's manufacturing flexibility, production volume scalability and reduced lead times.
  • Glass panels are printed with 3M's proprietary pattern which supplies current to the four corners of the sensor to generate the uniform, capacitive field for touch accuracy.
  • Proprietary hard coat is applied for industry-leading surface protection and embedded anti-glare characteristics.
  • Scratch-resistant top coat is applied over hard coat to improve surface scratch resistance (achieves 7 Mohs rating) and to create low surface energy which improves dragging/drawing capabilities.
  • Flex tail is conductively bonded to the glass sensor without solder points for optimal bezel seal-ability and to minimize electrical connection damage during integration.
  • Flex tail is reinforced to the glass sensor at three points for optimal integration reliability.
  • All touch sensors are inspected and tested for aesthetics and accuracy.
  • Completed SCT3250 sensor is linearized with mated EX II controller and carefully packaged for shipment to customer.

Volume Manufacturing

3M is known worldwide as a volume product manufacturer and this applies to manufacturing touch systems as well. Customers who require tens of thousands of touch screens delivered to forecasted dates rely on 3M Touch Systems to keep their product lines rolling to meet their customer's needs. Due to its in-house glass processing facility and continuous-flow production line, 3M Touch Systems is able to scale up from prototypes to volume quantities effortlessly.