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The ST25TA series (formerly known as SRTAG series) provides an NFC Forum tag type 4 RF interface and supports the NFC data exchange format (NDEF). This enables NFC use cases such as NFC tag, NFC token, NFC smart poster, NFC business card (Virtual card). It can be used in a wide variety of applications, including consumer electronics, computer peripherals, gaming, home appliances, industrial automation and healthcare products.

  • NFC forum tag type 4 based on ISO14443-A RF interface
  • EEPROM memory density from 512-bit to 64-Kbit with built-in NDEF message support
  • 20-bit events counter with anti-tearing
  • Data protection with 128-bit password in Read and Write access 
  • Optional user-programmable digital output (Field detect, Write In Progress, RF busy,…)
  • TruST25™ digital signature (ST25TA512B / ST25TA02KB / ST25TA02KB-D / ST25TA02KB-P)

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Antenna Design

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Step 1: Purchase Evaluation board

Step 2: Download associated software


Application executable of the "NFC Tap" Android app for ST25 product family


PC software executable for DEMO-CR95HF-A board (UM1084)


Software Development Kit for ST25 Tags and Dynamic Tags

Step 3: Get trained

ST25TA NFC tags product presentation