My Inquiry
My Account
STMicroelectronics ST25TA02KB-AC6G5
- Part No.:
- ST25TA02KB-AC6G5
- Manufacturer:
- STMicroelectronics
- Category:
- RFID, RF Access, Monitoring ICs
- Package:
- Die
- Datasheet:
-
ST25TA02KB-AC6G5.pdf
- Description:
- IC RFID TRANSP 13.56MHZ WAFER
- Quantity:
- Payment:
- Shipping:
Inventory:1,766
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ST25TA02KB-AC6G5 from STMicroelectronics is an NFC Forum Type 4 Tag IC compliant with ISO/IEC 14443 Type A, featuring 2-Kbit (256-byte) EEPROM, 7-byte UID, 128-bit password protection, and TruST25™ digital signature for anti-cloning. It operates contactlessly at 13.56 MHz with 106 kbps data rate and integrates 50 pF internal tuning capacitance - deployed in smart labels, product authentication tags, and industrial asset tracking systems.
For engineers reviewing the ST25TA02KB-AC6G5 datasheet, ST25TA02KB-AC6G5 pinout, ST25TA02KB-AC6G5 application, or ST25TA02KB-AC6G5 equivalent, key selection criteria include NFC Type 4 compliance, NDEF file support, GPO configurability (not present on -AC6G5 variant), UID uniqueness, and TruST25™-enabled origin verification - all critical for secure, standards-based NFC tag integration.
Technical Context
The ST25TA02KB-AC6G5 implements a passive RF-powered architecture with analog front-end tuned to 13.56 MHz via integrated 50 pF capacitance and external antenna coil (AC0/AC1). It supports full NFC Forum Type 4 Tag command set including ReadBinary, WriteBinary, UpdateBinary, and Verify, with strict adherence to ISO/IEC 14443-A framing and timing.
Memory management follows NFC Forum-defined NDEF structure: a read-only Capability Container (CC) file (15 bytes), user-writable NDEF file (up to 256 bytes), and proprietary System file containing UID, event counter, GPO config, and IC reference code. Access control uses two independent 128-bit passwords - one for read, one for write - with UNPROTECTED/PROTECTED/FORBIDDEN modes enforced via CC file CCRD/CCWR bytes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| NFC Compliance | NFC Forum Type 4 Tag certified; ensures interoperability with all NFC Forum–compliant readers and smartphones. |
| Memory Capacity | 256-byte EEPROM (2-Kbit); stores full NDEF messages including URI, text, or smart poster records with chaining support. |
| Data Retention | 200 years at 25°C; guarantees long-term integrity of stored identifiers, calibration data, or firmware metadata in unpowered environments. |
| Endurance | 1 million erase-write cycles; enables frequent reprogramming in dynamic use cases like reusable logistics tags or field-updatable device credentials. |
| UID Length | 7-byte unique identifier; provides cryptographically distinct identity per unit for serialization, anti-counterfeiting, and secure pairing. |
| Digital Signature | TruST25™ hardware-generated signature; verifies chip origin and prevents cloning by binding UID and memory content to ST's cryptographic root. |
| Communication Rate | 106 kbps (ISO/IEC 14443-A); defines maximum throughput for NDEF read/write operations under standard NFC polling conditions. |
Pinout & Package
ST25TA02KB-AC6G5 is housed in UFDFPN5 package (1.7 × 1.4 mm, 0.5 mm pitch), optimized for space-constrained PCB layouts in thin consumer and industrial labels. This variant lacks GPO and VDCG pins - confirmed by ST's DS12365 Rev 2 pinout diagrams and part number suffix "AC6G5", which maps to the base configuration without general-purpose output.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AC0 / AC1 | Antenna coil interface | Differential RF input pair; connects directly to printed loop antenna - no DC bias or external components permitted per design rules. |
| VSS | Ground reference | Common return path for internal analog/digital blocks; must be low-impedance to maintain RF coupling efficiency and signal integrity. |
| NC | No-connect pad | Unbonded terminal; left floating per STMicroelectronics layout guidance to avoid parasitic coupling or ESD risk. |
Key Features
| Feature | Design Value |
|---|---|
| NDEF File Support | Fully compliant with NFC Forum Type 4 Tag Application specification - enables seamless integration with Android Beam, iOS CoreNFC, and embedded NFC host stacks. |
| Anti-Tearing Event Counter | 20-bit hardware counter with atomic increment logic; preserves count accuracy during RF field dropout or power interruption during NDEF access. |
| Password Protection | Independent 128-bit read/write passwords stored in protected EEPROM; prevents unauthorized data extraction or tampering without cryptographic handshake. |
| TruST25™ Digital Signature | On-chip ECDSA signature generation tied to UID and memory digest; provides verifiable proof of genuine ST silicon for supply chain traceability. |
| Chaining Capability | Supports multi-block NDEF message reads/writes beyond 256-byte limit using chaining commands - essential for large firmware payloads or extended sensor logs. |
Applications
| Smart Product Authentication | Industrial Asset Tagging |
|---|---|
|
Use Scenario: High-value medical devices or aerospace components require tamper-evident, non-removable identification to prevent counterfeit substitution. IC Role / Device Role / Timing Role: NFC tag IC storing cryptographic UID and TruST25™ signature; queried during pre-use verification scan. Use Value: Enables field technicians to instantly validate authenticity via smartphone app - eliminating reliance on paper labels or manual database lookups. |
Use Scenario: Factory floor tools, calibration equipment, and test fixtures need durable, maintenance-free identification readable through metal housings or protective coatings. IC Role / Device Role / Timing Role: Passive RFID tag IC powered by reader field; stores asset ID, calibration date, and service history in NDEF format. Use Value: Allows maintenance staff to update service logs wirelessly without opening enclosures - reducing downtime and human error in CMMS integration. |
| Reusable Logistics Label | Consumer Electronics Pairing |
|
Use Scenario: Returnable transport items (RTIs) such as pallets or containers undergo hundreds of shipment cycles requiring persistent, rewritable identity storage. IC Role / Device Role / Timing Role: Rewritable NFC tag IC with 1M-cycle endurance; updated per trip with destination, timestamp, and condition data. Use Value: Eliminates barcode label replacement labor and scanning failures - enabling automated gate check-in/out via fixed NFC readers. |
Use Scenario: Wireless earbuds, smartwatches, or IoT peripherals simplify Bluetooth pairing using tap-to-connect UX. IC Role / Device Role / Timing Role: Pre-programmed NDEF record carrier; delivers device name, Bluetooth address, and pairing instructions on tap. Use Value: Removes manual Bluetooth search and PIN entry - accelerating first-time setup while ensuring correct device association. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NFC Type 4 tag applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ST25TA02KB-D | Includes open-drain GPO pin; requires external pull-up resistor; same memory and security features. | Enables hardware interrupt signaling to MCU (e.g., wake-on-NFC-tap) - not supported by -AC6G5. | Select when system-level event notification (e.g., low-power wake-up) is required alongside NFC data exchange. |
| NT3H2111W0FHKH | NXP part with 2-Kbit EEPROM, NFC Forum Type 4, but uses different UID format and lacks TruST25™ signature. | Compatible for basic NDEF storage but cannot replace ST25TA02KB-AC6G5 where origin verification or anti-cloning is mandated. | Choose only if supply continuity or dual-sourcing drives substitution and cryptographic provenance is not required. |
Compared with ST25TA02KB-D and NT3H2111W0FHKH, the ST25TA02KB-AC6G5 prioritizes compactness and cryptographic trust over peripheral signaling - making it optimal for cost-sensitive, space-constrained authentication tags where GPO functionality adds unnecessary complexity and BOM cost.
Availability
ST25TA02KB-AC6G5 is available at Aetrix Electronics and suitable for smart label deployment, industrial asset tracking, consumer electronics pairing, and secure product authentication requiring stable component supply across high-mix, low-volume production runs.
Supply support for ST25TA02KB-AC6G5 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, power ICs, sensors, and secure connectivity solutions for industrial, automotive, and consumer markets.
The ST25 family targets secure, standards-compliant NFC tagging - engineered specifically for robust operation in harsh environments, minimal PCB footprint, and seamless integration with mobile and embedded NFC hosts.
FAQ
Does ST25TA02KB-AC6G5 support GPO functionality?
No. The -AC6G5 suffix denotes the base variant without General Purpose Output. GPO is only available on ST25TA02KB-D (open-drain) and ST25TA02KB-P (CMOS) variants, as confirmed in ST's DS12365 Rev 2 pinout diagrams and functional descriptions. This part has three active terminals: AC0, AC1, and VSS - with one NC pad.
What is the role of TruST25™ digital signature in this device?
TruST25™ is a hardware-based digital signature engine that binds the device's unique 7-byte UID and memory content to STMicroelectronics' cryptographic root key. It allows remote verification of chip authenticity - preventing counterfeits by proving the tag originated from ST's secure manufacturing line, not a cloned or generic NFC IC.
Can ST25TA02KB-AC6G5 store firmware or configuration data reliably over time?
Yes. Its 256-byte EEPROM offers 200-year data retention at 25°C and 1 million write cycles, validated per JEDEC standards. Combined with anti-tearing event counter and password-protected NDEF file access, it ensures long-term integrity of calibration parameters, device serial numbers, or encrypted keys in unpowered storage scenarios.
How does the 50 pF internal tuning capacitance affect antenna design?
The integrated 50 pF capacitor reduces external component count by partially compensating antenna coil inductance. Designers must still tune the total LC resonance to 13.56 MHz using a single external capacitor (typically 0–15 pF), measured between AC0 and AC1, to achieve optimal RF field coupling and read range - per ST's AN4914 application note guidelines.
ST25TA02KB-AC6G5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- ST25T
- Package/Case:
- Die
- Packaging:
- Tray
- Product Status:
- Active
- Type:
- RFID Transponder
- Frequency:
- 13.56MHz
- Standards:
- ISO 14443, NFC
- Interface:
- -
- Voltage - Supply:
- 1.65V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Wafer
ST25TA02KB-AC6G5 FAQ
1.How can I place an order for ST25TA02KB-AC6G5 through Aetrix?
Please submit a Request for Quotation (RFQ) for ST25TA02KB-AC6G5 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 ST25TA02KB-AC6G5 reliable?
The price and inventory of ST25TA02KB-AC6G5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ST25TA02KB-AC6G5 is usually 5 days.
3.What payment methods are accepted for ST25TA02KB-AC6G5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ST25TA02KB-AC6G5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ST25TA02KB-AC6G5?
ST25TA02KB-AC6G5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ST25TA02KB-AC6G5 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 ST25TA02KB-AC6G5?
For technical support, including ST25TA02KB-AC6G5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ST25TA02KB-AC6G5 requirements.
6.How does Aetrix verify that ST25TA02KB-AC6G5 is sourced from the original manufacturer or authorized distributors?
All ST25TA02KB-AC6G5 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 ST25TA02KB-AC6G5 meets industry standards.
7.What is the process for return or replacement of ST25TA02KB-AC6G5?
All ST25TA02KB-AC6G5 units undergo pre-shipment inspection (PSI). If there is an issue with ST25TA02KB-AC6G5, 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 ST25TA02KB-AC6G5 part is unused and in its original packaging.
Return procedure for ST25TA02KB-AC6G5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ST25TA02KB-AC6G5 Tags
-
SL2S2602FTBX
NXP Semiconductors
-
ST25DV04K-IER6S3
STMicroelectronics
-
ST25DV04K-IER6C3
STMicroelectronics
-
LXMSJZNCMD-217
Murata Electronics
-
NT3H2111W0FTTJ
NXP Semiconductors
-
NT3H2111W0FHKH
NXP Semiconductors
-
M24LR04E-RMC6T/2
STMicroelectronics
-
ST25DV04KC-JF6D3
STMicroelectronics
-
ST25DV64KC-IE6S3
STMicroelectronics
-
ST25DV64K-IER6T3
STMicroelectronics
-
NT3H2211W0FTTJ
NXP Semiconductors
-
NT3H2211W0FHKH
NXP Semiconductors
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
