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STMicroelectronics ST25TA16K-AB6B3
- Part No.:
- ST25TA16K-AB6B3
- Manufacturer:
- STMicroelectronics
- Category:
- RFID, RF Access, Monitoring ICs
- Package:
- Die
- Datasheet:
-
ST25TA16K-AB6B3.pdf
- Description:
- IC RFID TRANSP 13.56MHZ WAFER
- Quantity:
- Payment:
- Shipping:
Inventory:2,874
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Product details
Overview
ST25TA16K-AB6B3 from STMicroelectronics is an NFC Forum Type 4 Tag IC embedding 16-Kbit EEPROM, compliant with ISO/IEC 14443 Type A at 106 Kbps, featuring 7-byte UID, 128-bit password protection, and 246-byte single-command read/write capability. It operates passively via 13.56 MHz RF field and supports NDEF data structure for secure, standardized tag applications in smart packaging and access control.
For engineers reviewing the ST25TA16K-AB6B3 datasheet, ST25TA16K-AB6B3 pinout, ST25TA16K-AB6B3 application, or ST25TA16K-AB6B3 equivalent, this page delivers verified technical context, memory access behavior, RF protocol compliance, and real-world deployment constraints - not generic NFC tag summaries.
Technical Context
The ST25TA16K-AB6B3 implements a fully passive RF interface based exclusively on ISO/IEC 14443 Type A Layer 1–3 and NFC Forum Type 4 Tag specifications. It requires no external power supply and derives all operating energy from the 13.56 MHz magnetic field, with internal 25 pF tuning capacitance enabling direct antenna coil coupling without external matching components.
Memory management follows strict NDEF Tag Application architecture: three fixed files (CC file at 0xE103, NDEF file at 0x0001, System file at 0xE101) govern access control, where read/write permissions are stored in CC file offsets 0x000D–0x000E and enforced via 128-bit passwords - not simple lock bits - with permanent locking supported via EnablePermanentState command.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RF Standard | ISO/IEC 14443 Type A & NFC Forum Type 4 Tag - ensures interoperability with all certified NFC readers and smartphones. |
| Data Rate | 106 Kbps - defines maximum raw transfer speed; limits payload size per I-Block to 256 bytes including CRC and headers. |
| Memory Size | 16-Kbit (2-Kbyte) EEPROM - provides user-accessible NDEF storage with 246-byte max read/write per command. |
| Data Retention | 200 years - guaranteed data integrity without refresh; enables lifetime labeling in static industrial assets. |
| Endurance | 1 million erase-write cycles - supports frequent reprogramming in logistics tracking or firmware update tags. |
| UID Length | 7-byte unique identifier - enables deterministic device addressing without collision in multi-tag environments. |
| Password Security | 128-bit read/write passwords - enforces cryptographic-grade access control; passwords must be verified before locked file access. |
Pinout & Package
ST25TA16K-AB6B3 uses a wafer-level chip-scale package (WLCSP) with two terminals only: AC0 and AC1, dedicated exclusively to connection of an external antenna coil. No DC power pins, ground, or digital I/O exist - operation is fully contactless and field-powered.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AC0 / AC1 | Antenna coil interface | Direct RF energy harvesting path; must connect to tuned loop antenna (no DC bias or ESD diodes permitted). |
Key Features
| Feature | Design Value |
|---|---|
| NFC Forum Type 4 compliance | Full support for NDEF Tag Application Select, ReadBinary, UpdateBinary, and proprietary ExtendedReadBinary - enables seamless integration into Android Beam and iOS CoreNFC ecosystems. |
| 246-byte single-command I/O | Reduces transaction count by >50% vs legacy 16-byte reads - critical for fast inventory scanning in retail or warehouse systems. |
| Permanent locking capability | EnablePermanentState command makes NDEF file read-only or write-locked irreversibly - satisfies tamper-evident requirements in pharmaceutical serialization. |
| CC file programmability | Read/Write access rights in CC file (offsets 0x000D–0x000E) can be updated dynamically - allows runtime permission changes without full memory reformatting. |
| Internal 25 pF tuning capacitance | Eliminates need for external capacitor in antenna matching network - reduces BOM count and PCB footprint in space-constrained designs. |
Applications
| Smart Packaging Authentication | Industrial Asset Tagging |
|---|---|
|
Use Scenario: Tamper-proof product label on high-value medical devices containing serialized batch ID and calibration date. IC Role / Device Role / Timing Role: Passive NFC tag storing cryptographically signed NDEF message; responds within 5 ms of RF field activation. Use Value: Enables field verification of authenticity using smartphone scan; 200-year data retention guarantees traceability over device lifetime. |
Use Scenario: Ruggedized metal-mount tag on factory floor machinery for maintenance log updates. IC Role / Device Role / Timing Role: Field-powered memory node; withstands repeated write cycles during technician service entries. Use Value: 1 million endurance cycles support daily logging for >27 years; 128-bit password prevents unauthorized firmware or configuration edits. |
| Access Control Credential | Consumer Electronics Pairing |
|
Use Scenario: Embedded tag in hotel keycard enabling room entry after PIN verification. IC Role / Device Role / Timing Role: Secure credential store; read-locked NDEF file requires 128-bit password before exposing access code. Use Value: Prevents cloning via brute-force attacks; permanent locking option disables reprogramming post-issuance. |
Use Scenario: NFC-enabled speaker that auto-pairs with smartphone upon tap. IC Role / Device Role / Timing Role: Pre-programmed NDEF record triggers Bluetooth pairing handshake via Android Intent. Use Value: 246-byte single-read capability delivers full pairing payload in one RF exchange - eliminates multi-frame latency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NFC tag IC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NT3H2111W0FHKH | 1-Kbyte EEPROM, integrated 13.56 MHz antenna, no external coil required. | Suitable for compact consumer labels but lacks 7-byte UID and permanent locking. | Select when antenna integration outweighs security and longevity requirements. |
| ST25DV02K-IER | I²C + RF dual-interface; 2-Kbyte EEPROM; supports dynamic password update via I²C. | Enables hybrid wired/wireless provisioning but requires PCB routing for I²C lines. | Select when field reconfiguration via microcontroller is mandatory. |
Compared with NT3H2111W0FHKH and ST25DV02K-IER, the ST25TA16K-AB6B3 uniquely balances long-term data integrity (200-year retention), robust physical security (128-bit password + permanent lock), and minimal BOM (coil-only interface), making it optimal for unattended, high-trust tagging scenarios.
Availability
ST25TA16K-AB6B3 is available at Aetrix Electronics and suitable for smart packaging authentication, industrial asset tagging, access control credentialing, and consumer electronics pairing requiring stable component supply across multi-year production cycles.
Supply support for ST25TA16K-AB6B3 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, analog ICs, MEMS, and smart power devices for industrial, automotive, and consumer markets.
The ST25 family targets secure, standards-compliant NFC/RFID tagging applications - emphasizing interoperability, data longevity, and field-deployable security without external power or complex interfaces.
FAQ
Does ST25TA16K-AB6B3 require an external power supply?
No. The device is fully passive and derives all operating energy from the 13.56 MHz RF field generated by an NFC reader or smartphone. Its internal power management unit rectifies and regulates this energy - no VDD, GND, or battery connections exist. This enables zero-power, maintenance-free deployment in sealed or inaccessible locations.
How is memory access secured against unauthorized reads or writes?
Security relies on two independent 128-bit passwords - one for read access and another for write access - stored in non-volatile memory. Before accessing a locked NDEF file, the host must issue a Verify command with the correct password. Additionally, the EnablePermanentState command can irreversibly lock memory regions, preventing future password changes or unlocks.
Can ST25TA16K-AB6B3 be used with non-NFC Forum readers?
Yes, but only if the reader supports ISO/IEC 14443 Type A at 106 Kbps and implements the mandatory command set (e.g., RATS, PPS, ReadBinary, UpdateBinary). It will not function with proprietary or non-compliant RFID protocols like ISO/IEC 15693 or MIFARE Classic, as its firmware strictly enforces NFC Forum Type 4 Tag state machine behavior.
What antenna design considerations apply to ST25TA16K-AB6B3?
The AC0/AC1 terminals require connection to a tuned loop antenna with impedance matched to ~50 Ω at 13.56 MHz. ST's recommended layout uses a 4–6 turn planar coil (≈20–30 mm diameter) with internal 25 pF capacitance compensating typical parasitic inductance. Antenna Q-factor must exceed 25 to ensure reliable power harvesting at >5 cm read distance.
ST25TA16K-AB6B3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- ST25T
- Package/Case:
- Die
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- RFID Transponder
- Frequency:
- 13.56MHz
- Standards:
- ISO 14443
- Interface:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Wafer
ST25TA16K-AB6B3 FAQ
1.How can I place an order for ST25TA16K-AB6B3 through Aetrix?
Please submit a Request for Quotation (RFQ) for ST25TA16K-AB6B3 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ST25TA16K-AB6B3 reliable?
The price and inventory of ST25TA16K-AB6B3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ST25TA16K-AB6B3 is usually 5 days.
3.What payment methods are accepted for ST25TA16K-AB6B3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ST25TA16K-AB6B3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ST25TA16K-AB6B3?
ST25TA16K-AB6B3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ST25TA16K-AB6B3 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ST25TA16K-AB6B3?
For technical support, including ST25TA16K-AB6B3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ST25TA16K-AB6B3 requirements.
6.How does Aetrix verify that ST25TA16K-AB6B3 is sourced from the original manufacturer or authorized distributors?
All ST25TA16K-AB6B3 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ST25TA16K-AB6B3 meets industry standards.
7.What is the process for return or replacement of ST25TA16K-AB6B3?
All ST25TA16K-AB6B3 units undergo pre-shipment inspection (PSI). If there is an issue with ST25TA16K-AB6B3, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ST25TA16K-AB6B3 part is unused and in its original packaging.
Return procedure for ST25TA16K-AB6B3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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