ST25 NFC / RFID tags

ST25 logo

ST25T product family offers NFC/RFID ICs for contactless applications. They include short and long range (ISO/IEC 14443 A/B & 15693) and feature EEPROM memory, from 512-bit to 64-Kbit.

What is an ST25 NFC tag?

A near field communication (NFC) tag consists of a tag IC chip and an antenna. ST manufactures ST25 NFC tag ICs for tag makers, who connect the IC to an antenna to build operational ST25 NFC tags.

These NFC tags do not require batteries to communicate with NFC readers like smartphones. They harvest the power they need directly from the magnetic field of the reader positioned in close proximity to the tag.

NFC tag

The ST25 NFC tag and the reader exchange data using specific NFC instructions defined by standards for contactless communication.

Any physical object with an ST25 NFC tag can therefore offer an advanced digital experience to the consumer.

ST25 NFC tags can enhance user experience in several ways, depending on the targeted applications. For instance, you can engage with consumers, authenticate goods, and even validate your bus ticket.

If you are interested in learning more about NFC chips, visit our learning page.

ST-manufactured NFC tag ICs meet all the requirements of the NFC Forum – standardization organization of the industry – and offer an attractive combination of performance and state-of-the-art features. The "T" in ST25T product names denote tag products in the ST25 family.

10 year longevity programOur 10 year longevity program is available for selected devices to ensure ongoing deployment in key industrial-grade and medical NFC / RFID applications


Available in several user memory densities and with many key features, ST25T NFC tags target a wide variety of applications such as IoT objects and Smart home & city. This includes key markets like luxury, pharma, Healthcare & Wellness, Wine & Spirits, etc.

Product types

Our ST25T portfolio offers four main series, providing different kinds of advanced features to enable a broad range of use cases.

NFC ICs type ST25TV series
NFC tag ICs offering a high-end feature set for advanced user experience, available in large densities
ISO/IEC 15693 - NFC Forum Type 5
NFC ICs type ST25TN series
NFC tag ICs offering a cost-effective solution for easy access to NFC
ISO/IEC 14443 Type A - NFC Forum Type 2
NFC ICs type ST25TA series
NFC tag ICs offering RF-based interrupt for convenient wireless pairing, available in large densities
ISO/IEC 14443 Type A – NFC Forum Type 4
NFC ICs type ST25TB series
RFID tag ICs for public transportation and event ticketing solutions
ISO/IEC 14443 Type B
ST25Connect programNeed support to start with NFC?
Join the ST25Connect program to

Discover our portfolio


    ST25 NFC tags deliver an enhanced wireless experience to users thanks to a simple tap. Other main benefits of this product family include:
  • NFC Forum compliant solutions ensuring interoperability between devices
  • Native access to customizable tag data thanks to the Augmented NDEF
  • Prevention from counterfeiting with the TruST25™ Digital signature
  • High-reliability EEPROM memory, suitable for a wide range of use cases
  • User data protection with up to 128-bit passwords
  • Extensive ecosystem bringing simple and easy NFC integration in your product
  • Dedicated support through ST25Connect program

Useful information

Augmented NDEF WHAT IS AUGMENTED NDEF? This feature delivers unique and dynamic URLs with personalized information. It is natively supported by iOS and Android.
TruST25 digital signature WHAT IS TruST25™ DIGITAL SIGNATURE? This in-house industrialization process ensures die authenticity provided by STMicroelectronics to help fight counterfeiting.
Tamper detect feature WHAT IS TAMPER DETECT? This onboard mechanism ensures product integrity by means of physical verification (e.g., bottle of wine).
Unique tap code WHAT IS UNIQUE TAP CODE (UTC)? This feature ensures the Augmented NDEF message uniqueness on each tap of the tag.
Untraceable & kill mode WHAT IS UNTRACEABLE & KILL MODE? When enabled, these modes offer consumer privacy capabilities required by the GDPR.
Sawn and bumped wafer WHAT IS SAWN & BUMPED WAFER? Die delivery form. DFN5 package also available.


Standards compliance
  • ISO 15693
  • Up to 53kb/s
  • NFC type 5
  • ISO 14443-A
  • 106kb/s
  • NFC type 2
  • ISO 14443-A
  • 106kb/s
  • NFC type 4
  • ISO 14443-B
  • 106kb/s
  • 512bit to 64Kbit
  • 60-year, 1Mcycles
  • 512bit & 1.6Kbit
  • 40-year, 100Kcycles
  • 512bit to 64Kbit
  • 200-year, 1Mcycles
  • 512bit to 4Kbit
  • 40-year, 1Mcycles
Advanced features
  • Augmented NDEF (extended)
  • 24bit Unique Tap Code
  • 64bit password
  • TruST25™ Digital signature
  • Tamper detect
  • Untraceable & kill mode
  • Augmented NDEF
  • 24bit Unique Tap Code
  • TruST25™ Digital signature
  • Kill mode
  • 128bit password
  • 20bit counter
  • General Purpose Output
  • TruST25™ Digital signature
  • 32bit counters
  • Lock bit, One-Time-Programmable bit
Use cases
  • Consumer engagement
  • Asset tracking
  • Brand protection
  • Product identification
  • Parameter setting
  • Product information
  • Access control
  • Consumer engagement
  • Product identification
  • Parameter setting
  • Product information
  • Gaming
  • Smart labelling
  • Business card
  • Smart poster
  • Bluetooth/Wi-Fi pairing
  • Product identification
  • Public transportation
  • Access control
ST25 marking information
Discover information about reference and characteristics of the product
Download our whitepaper to discover how NFC improves user experience
ST’s new NFC tags with on-chip digital signature for strengthened brand protection