3M MicroTouch System SCT3250EX
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The Clear Solution for Demanding Touch Applications
3M Touch Systems has more than 25 years of surface capacitive
technology expertise and specifically designed the 3M MicroTouch
System SCT3250EX to meet the performance requirements of display
applications ranging from 5.7 to 32 inches. As an all-glass design, the
SCT3250EX touch system offers light transmission up to 11.5% better
than typical resistive sensors and 3.5% better than typical surface
capacitive sensors (based on published specifications).
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With the combination of the 3M ClearTek proprietary hard coat and a
scratch-resistant top coat, the 3M MicroTouch Sensor SCT3250 offers
superior surface durability compared to typical resistive and surface
capacitive solutions. This surface durability feature helps the SCT3250
touch sensor support heavy-use applications while maintaining its
functional, optical and aesthetic characteristics.
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In addition to the superior 3M MicroTouch SCT3250 touch sensor
design, the 3M MicroTouch Controller EX with its dedicated custom
ASIC sets the performance standard for capacitive sensing electronics
and offers industry-leading ESD protection (based on published
specifications). The EX controller's proprietary firmware and patented
algorithms dynamically adapt to changes in the application’s environment
to help maintain the initial video alignment of the display for the life of the
product. And, due to the dedicated ASIC, the SCT3250EX touch system
has a "minimum touch duration" that is 50% faster than typical surface
acoustic wave and surface capacitive solutions (based on published
specifications).
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Recommended Applications
• POS all-in-one devices
• Information kiosks
• Self-service systems
• Ticketing machines
• Gaming machines
• Amusement stations
• Industrial devices
• Healthcare displays
With millions of 3M surface capacitive touch systems in use around the
world, the SCT3250EX touch system continues to be a preferred touch
solution for demanding applications, such as gaming and retail, that
require 24/7 reliability.
Feature
All-Glass Solution with
3M ClearTek Hard Coat
EX Electronics
Benefit
•
High light transmission provides superior display performance
• Superior surface durability maintains optical and functional performance
• High MTBF provides reliable system performance
• High ESD performance to meeting industry requirements
• Dedicated ASIC creates fast, accurate touch response
• Low surface energy resists surface scratching
• Smooth surface for better drag and draw performance
• Durable finish for easy-to-clean surface
Scratch-resistant
Top Coat
3M MicroTouch SCT3250EX System Specifications
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System Performance
Light Transmission
Input Method
Accuracy
Resolution
Linearization
Tail Connection
91.5% (±1.5%)
Finger contact
>99% of true position
1024 x 1024, but capable of 16K x16K
when used with EX controllers
Factory linearized
Solder-less design
Mechanical
Glass Thickness
Display Size
Surface Scratch
Scratch Resistance
Sealing
Cleaning
RoHS Directive
Compliant
0.125" (3.18 mm)
Supported 5.7" (144.78 mm) to 32" (812.80 mm)
(standard and wide formats)
Hardness MoHS 7 or higher to induce a
functional failure
3M ClearTek hard coat
NEMA 4X / IP66, complete water-resistant seal compatible
Water, isopropyl alcohol, or similar non-abrasive cleaners
Yes
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Electronics (3M MicroTouch Controller EX)
Communication
Dimensions
Operating Current
Sleep Current
Power Connection
Connectors
ESD
Point Speed (PPS)
Minimum Touch Time
MTBF
USB, Serial, USB HID Digitizer,
Dual Mode (USB and Serial
1.30" x 2.55" x 0.45"
33.0 x 65.0 x 11.4 mm
USB: 75 mA (typical)
Serial: 85 mA (typical)
< 500 uA
USB: 5Vdc ± 5% 75 mA
Serial: 5-12Vdc ± 5% 85 mA
5-pin locking AMP (Touch side)
5-pin Molex (COM side)
±8KV Contact, ±27KV Air
200 pps
5.4 ms
>700,000 hours
System Warranty
5 years on touch system
Unlimited touch warranty
Operating Systems Supported
Windows 7 (32-and 64-bit)*
Windows Vista (32-and 64-bit)
Windows XP (32-and 64-bit)
Windows 2000, Server 2003, Server 2008 (32-and 64-bit)
Windows 98, 95, ME, NT 4.0, NT 3.5, 3.1x (32-bit)
Windows CE, XPe, WePOS (32-bit)
Linux Kernel 2.6, Kernel 2.4 (serial only)**
Apple OSX (UPDD driver)**
* 3M MicroTouch System SCT3250EX HID is Windows 7 Logo Compatible
Reliability
Surface Obstructions
Chemical Resistance
Liquid Resistance
Operating Temperature
Storage Temperature
Humidity
Withstands most surface contaminants
ASTM-D-1308-02 and ASTM-F-1598-95
Liquids on screen do not impede touch
performance
-40° C to 70° C for the touch screen
-50°C and 85°C
Up to 90% RH from 0º C to 35º C, non-condensing
** Limited MT7 features supported
3M Touch Systems
Subsidiary of 3M Company
501 Griffin Brook Park Drive
Methuen, MA 01844
U.S.A.
1-888-659-1080
www.3M.com/touch
RoHS Directive compliant:
In accordance with European Directive 2002/95/EC, “RoHS Directive compliant” means that the product or part does not contain any of the following substances in excess
of the following maximum concentration values in any homogeneous material, unless the substance is in an application that is exempt under RoHS: (a) 0.1% (by weight) for lead, mercury, hexavalent
chromium, polybrominated biphenyls or polybrominated diphenyl ethers; or (b) 0.01% (by weight) for cadmium. Unless otherwise stated by 3M in writing, this information represents 3M’s knowledge and
belief based on information provided by third party suppliers to 3M. (9/06)
IMPORTANT NOTICE TO PURCHASER:
Specifications are subject to change without notice. These 3M Touch Systems’ Products and software are warranted to meet their published specifications
from the date of shipment and for the period stated in the specification. 3M Touch Systems makes no additional warranties, express or implied, including but not limited to any implied warranties of
merchantability or fitness for a particular purpose. User is responsible for determining whether the 3M Touch Systems Products and software are fit for User’s particular purpose and suitable for its
method of production, including intellectual property liability for User’s application. If the Product, software or software media is proven not to have met 3M Touch Systems’ warranty, then 3M Touch
Systems’ sole obligation and User’s and Purchaser’s exclusive remedy, will be, at 3M Touch Systems’ option, to repair or replace that Product quantity or software mediator to refund its purchase
price. 3M Touch Systems has no obligation under 3M Touch Systems’ warranty for any Product, software or software media that has been modified or damaged through misuse, accident, neglect,
or subsequent manufacturing operations or assemblies by anyone other than 3M Touch Systems. 3M Touch Systems shall not be liable in any action against it in any way related to the Products or
software for any loss or damages, whether non-specified direct, indirect, special, incidental or consequential (including downtime, loss of profits or goodwill) regardless of the legal theory asserted. (7/02)
3M, MicroTouch, and ClearTek are trademarks of 3M Company.
Printed in USA
© 3M 2012 All rights reserved.
SCT3250EX -0212
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