ACR39T-A3 is a SIM-sized smart card reader that is small, but packs a lot of features. With its MicroUSB OTG interface, ACR39T-A3 is capable of supporting most of the mobile devices in the market today that run applications using SIM-sized contact smart cards. This provides the perfect balance between dependable functionality and design aesthetics to meet your security requirements in smart card-based applications.

ACR39T-A3 supports ISO 7816 smart cards, GSM 11.11-compliant cards, various memory cards, and microprocessor cards with T=0 and T=1 protocol. This compact smart card reader can also readily support micro-SIM-sized cards. It can be easily integrated with any mobile device running on the Android™ platform with versions 3.1 and above, and may be used in Windows®, Linux®, or Mac OS®, with its PC/SC and CCID compliance.

Weighing nothing more than your standard USB stick, ACR39T-A3 is a device that you can bring anywhere to keep smart card technology right at your fingertips.

Mobile Micro USB SIM Card Slot
  • Supports ISO 7816 Class A, B and C (5 V, 3 V, 1.8 V) cards
  • Supports microprocessor cards with T=0 or T=1 protocol
  • Supports memory cards such as:
    • Cards following the I2C bus protocol (free memory cards) with maximum 128 bytes page with capability, including:
      • Atmel: AT24C01/02/04/08/16/32/64/128/256/512/1024
      • SGS-Thomson: ST14C02C, ST14C04C
      • Gemplus: GFM1K, GFM2K, GFM4K, GFM8K
    • Cards with intelligent 1k bytes EEPROM with write-protect function, including:
      • Infineon: SLE4418, SLE4428, SLE5518 and SLE5528
    • Cards with intelligent 256 bytes EEPROM with write-protect function, including:
      • Infineon: SLE4432, SLE4442, SLE5532 and SLE5542
  • Supports PPS (Protocol and Parameters Selection)
  • Features Short Circuit Protection
  • Application Programming Interface:
    • Supports PC/SC
    • Supports CT-API (through wrapper on top of PC/SC)
Physical Characteristics
Dimensions (mm) 49.5 mm (L) x 21.5 mm (W) x 9.0 mm (H)
Weight (g) 7.9 g
USB Interface
Protocol USB CCID
Connector Type Micro-USB
Power Source From USB Port
Speed USB Full Speed (12 Mbps)
Contact Smart Card Interface
Number of Slots 1 Standard SIM-Sized Card Slot
Standard ISO 7816 Parts 1-3, Class A, B, C (5 V, 3 V, 1.8 V)
Protocol T=0; T=1, Memory Card Support
Certifications/Compliance
Certifications/Compliance EN 60950/IEC 60950
ISO 7816
USB Full Speed
PC/SC
CCID
VCCI (Japan)
CE
FCC
WEEE
RoHS 2
REACH
Microsoft® WHQL
Device Driver Operating System Support
Device Driver Operating System Support Windows®
Linux®
MAC OS®
Solaris
Android™ 3.1 and later
iOS 5.0 and later

ACR39T-A3 is end-of-life already. To inquire about a suitable replacement or pending orders, please contact [email protected].

Drivers for ACR39T-A3
USB Interface OS Support
PC/SC Driver Installer  258.98 KB
Version 1.1.8.3
22-Feb-2022
Mac OS® X 10.6 or above
MSI Installer for PC/SC Driver  3.65 MB
Version 4.4.2.0
30-Nov-2022
Windows®
Android EVK  1.56 MB
Version 1.1.6
18-Jan-2024
Android™ 3.1 or above
MSI Installer for PC/SC Driver  5 MB
Version 4.0.6.0
14-Nov-2014
Windows® 7 (for users who did not install required Microsoft Windows Updates and get driver signature error (Code 52))
PC/SC Driver Package  3.04 MB
Version 1.1.8
10-Jan-2020
Linux ®
PC/SC Drivers  458 KB
Version 1.1.8
06-Jan-2020
Linux®, Mac OS® X
CT-API Library  2.04 MB
Version 1.0.1.1
23-Jan-2017
Windows® XP, Windows® Server 2003, Windows® Vista, Windows® Server 2008, Windows® Server 2008 R2, Windows® 7, Windows® 8, Windows 8.1, Windows® Server 2012, Windows® Server 2012 R2, Windows® 10, Windows® 11
CT-API Library  261 KB
Version 1.0.1
23-Jan-2017
Linux®, Mac OS® X 10.5, Mac OS® X10.6, Mac OS® X10.7, Mac OS® X10.8, Mac OS® X10.9
PC/SC Driver Installer 
Version 1.0.8
16-Feb-2017
Solaris 10, 11 and above



Manuals & Datasheets for ACR39T-A3
Product Presentation

Product Presentation of ACR39T-A3

Technical Specification

Technical Specification of ACR39T-A3

Reference Manual

Reference Manual of ACR39T-A3