My Inquiry
My Account
STMicroelectronics SRIX4K-SBN18/1GE
- Part No.:
- SRIX4K-SBN18/1GE
- Manufacturer:
- STMicroelectronics
- Category:
- RFID, RF Access, Monitoring ICs
- Package:
- Die
- Datasheet:
-
SRIX4K-SBN18/1GE.pdf
- Description:
- IC RFID TRANSP 13.56MHZ DIE
- Quantity:
- Payment:
- Shipping:
Inventory:2,404
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SRIX4K-SBN18/1GE from STMicroelectronics is a 13.56 MHz ISO 14443-3 Type B contactless memory IC with 4096-bit EEPROM, 64-bit unique identifier, 8-bit Chip_ID–based anticollision, and France Telecom–licensed anti-clone authentication. It operates without an external power supply, drawing energy from the reader's RF field, and supports block-wise read/write (32-bit) at 106 Kbit/s for secure short-range identification in smart cards and access tokens.
For engineers reviewing the SRIX4K-SBN18/1GE datasheet, SRIX4K-SBN18/1GE pinout, SRIX4K-SBN18/1GE application, or SRIX4K-SBN18/1GE equivalent, key selection criteria include ISO 14443-2/3 Type B compliance, on-chip tuning capacitor integration, automated antitearing protection for counters, 1 million erase/write cycles, and self-timed 5 ms programming-critical for tamper-resistant credential systems.
Technical Context
The SRIX4K-SBN18/1GE implements a probabilistic anticollision protocol using slot markers per ISO 14443-3 Type B, enabling simultaneous detection of multiple tags in shared RF fields. Its ASK-demodulated 13.56 MHz carrier (10% modulation depth) powers the chip and delivers commands, while BPSK-modulated 847 kHz subcarrier enables robust 106 Kbit/s uplink data transmission via load variation.
Memory architecture comprises three distinct regions: a resettable OTP area (addresses 0–4), two 32-bit binary countdown counters (addresses 5–6) with automated antitearing, and a 4096-bit EEPROM organized as 128 × 32-bit blocks (addresses 7–127). System-level security is enforced through France Telecom's proprietary anti-clone function and Chip_ID–driven selection logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Interface Standard | ISO 14443-2 Type B & ISO 14443-3 Type B compliant-ensures interoperability with standard readers and defines frame structure, timing, and error handling. |
| Carrier Frequency | 13.56 MHz-enables near-field coupling within ~10 cm range and aligns with global HF RFID regulatory requirements. |
| Data Rate | 106 Kbit/s bidirectional-supports fast transaction throughput for high-volume access control or transit fare collection. |
| Memory Capacity | 4096-bit EEPROM (128 × 32-bit blocks)-provides sufficient storage for cryptographic keys, credentials, and usage logs in secure tokens. |
| Endurance | 1 million erase/write cycles-guarantees long-term reliability in reprogrammable applications like reusable ID badges. |
| Data Retention | 40 years at 25°C-ensures persistent credential validity over product lifetime without refresh cycles. |
| Anticollision | 8-bit Chip_ID–based probabilistic scanning-enables reliable multi-tag resolution in dense deployment environments (e.g., event ticketing). |
| Security Features | France Telecom anti-clone function + automated antitearing for counters-prevents cloning and ensures atomic counter decrement even during power loss. |
Pinout & Package
Package: Unpackaged bumped and sawn wafer die (no leaded or surface-mount package); intended for direct wire-bonding to antenna coil.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AC0 | Antenna Coil Terminal 0 | Primary RF input node; connects directly to one end of external loop antenna for energy harvesting and bidirectional communication. |
| AC1 | Antenna Coil Terminal 1 | Secondary RF input node; completes resonant LC tank with AC0 and internal tuning capacitor (no external capacitor required). |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Tuning Capacitor | Eliminates need for external capacitor-reduces bill-of-materials and simplifies antenna matching for compact tag designs. |
| Self-Timed Programming | 5 ms typical write cycle with no external timing control-enables deterministic firmware execution and eliminates host-side timing overhead. |
| Automated Antitearing Protection | Hardware-enforced atomic decrement for dual 32-bit counters-prevents partial updates during power interruption in pay-per-use or audit-trail applications. |
| 64-bit Unique Identifier | Factory-programmed immutable UID-serves as root-of-trust for device binding and cryptographic key derivation in secure authentication flows. |
| Resettable OTP Area | 5-byte region (addresses 0–4) erasable to all-1s-supports flexible configuration locking (e.g., disabling debug features post-deployment). |
Applications
| Secure Access Control | Public Transit Fare Media |
|---|---|
|
Use Scenario: Employee badge used for door entry and logical network authentication. IC Role / Device Role / Timing Role: Contactless memory IC storing encrypted credentials and session tokens; powered and clocked entirely by reader RF field. Use Value: Anti-clone function prevents badge duplication; 40-year data retention ensures credential longevity across workforce lifecycle. |
Use Scenario: Rechargeable transit card validated at gate readers during boarding. IC Role / Device Role / Timing Role: Secure EEPROM holding balance, trip history, and reload authorization keys; accessed via ISO 14443-3 Type B frames. Use Value: Dual 32-bit countdown counters track remaining trips with hardware antitearing-eliminates balance corruption during mid-transaction power loss. |
| Reusable Event Ticketing | Industrial Asset Tagging |
|
Use Scenario: Multi-day festival wristband granting timed access to venues and VIP areas. IC Role / Device Role / Timing Role: Tamper-resistant memory IC storing time-gated permissions and attendance logs; selected via Chip_ID anticollision. Use Value: Probabilistic anticollision resolves >100 wristbands simultaneously at entry gates; 1 million write cycles support daily reconfiguration over multi-year events. |
Use Scenario: Maintenance tag attached to factory equipment tracking service intervals and calibration status. IC Role / Device Role / Timing Role: Passive RFID tag storing maintenance history and firmware version; read/written via handheld ISO 14443-B readers. Use Value: Internal tuning capacitor simplifies antenna design for metal-mount tags; 4096-bit EEPROM accommodates full service log without external memory. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar contactless memory IC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SR3000 (STMicroelectronics) | ISO 14443-3 Type A only; no anti-clone function; 1024-bit EEPROM. | Lacks France Telecom authentication and smaller memory-suitable only for basic identification where security is not mandated. | Select when cost sensitivity outweighs anti-cloning requirements and memory needs are ≤1 Kbit. |
| MIFARE DESFire EV3 (NXP) | ARM-based secure microcontroller; AES-256 crypto engine; 8 KB EEPROM; ISO 14443-4 compliant. | Supports complex applets and mutual authentication-over-engineered for static credential storage but required for dynamic key exchange. | Choose when application demands on-card cryptography, multi-application support, or PKI integration beyond SRIX4K's fixed-function scope. |
Compared with SR3000, SRIX4K-SBN18/1GE adds anti-clone assurance and quadruples EEPROM capacity; versus MIFARE DESFire EV3, it trades programmable security for lower cost, simpler integration, and guaranteed deterministic timing in resource-constrained tag designs.
Availability
SRIX4K-SBN18/1GE is available at Aetrix Electronics and suitable for secure access control, public transit fare media, reusable event ticketing, and industrial asset tagging requiring stable component supply and long-lifecycle support.
Supply support for SRIX4K-SBN18/1GE 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 secure RFID solutions for industrial, automotive, and consumer markets.
SRIX4K belongs to ST's contactless memory IC product line, engineered specifically for ISO 14443-3 Type B short-range secure identification-prioritizing tamper resistance, RF efficiency, and seamless integration into thin-form-factor smart cards and tags.
FAQ
Does SRIX4K-SBN18/1GE require an external power supply?
No. The device is fully passive and derives operating power exclusively from the 13.56 MHz RF field generated by the reader. Its integrated voltage regulator converts induced AC from the antenna coil (AC0/AC1) into stable DC supply, eliminating batteries or external power traces in tag designs.
How is the anti-clone function implemented and verified?
The anti-clone function is a France Telecom–licensed proprietary algorithm executed during the Authenticate command sequence. It relies on challenge-response interaction between reader and SRIX4K using secret keys stored in the OTP area. Verification requires use of ST's CRX14 coupler IC and licensed reader firmware-no public key derivation or third-party validation is supported.
What antenna design considerations apply to SRIX4K-SBN18/1GE?
The die includes an internal tuning capacitor (~22 pF), so external capacitance is unnecessary. Antenna inductance must be tuned to resonate at 13.56 MHz with the die's parasitic capacitance. Recommended antenna Q factor is 15–25; impedance matching targets 50 Ω at the reader interface. Layout must minimize bond wire inductance between AC0/AC1 and antenna pads.
Can the 32-bit counters be reloaded or reset by the host system?
No. The two 32-bit counters are strictly decrement-only and cannot be incremented, reloaded, or reset externally. They initialize to 0xFFFFFFFFh and decrement to 0x00000000h; further decrements wrap to 0xFFFFFFFFh but do not trigger interrupts or status flags. This design enforces irreversible usage tracking for audit and licensing enforcement.
SRIX4K-SBN18/1GE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- Die
- Packaging:
- Box
- Product Status:
- Obsolete
- Type:
- RFID Transponder
- Frequency:
- 13.56MHz
- Standards:
- ISO 14443
- Interface:
- -
- Voltage - Supply:
- 2.5V ~ 3.5V
- Operating Temperature:
- -20°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- -
SRIX4K-SBN18/1GE FAQ
1.How can I place an order for SRIX4K-SBN18/1GE through Aetrix?
Please submit a Request for Quotation (RFQ) for SRIX4K-SBN18/1GE 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 SRIX4K-SBN18/1GE reliable?
The price and inventory of SRIX4K-SBN18/1GE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SRIX4K-SBN18/1GE is usually 5 days.
3.What payment methods are accepted for SRIX4K-SBN18/1GE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SRIX4K-SBN18/1GE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SRIX4K-SBN18/1GE?
SRIX4K-SBN18/1GE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SRIX4K-SBN18/1GE 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 SRIX4K-SBN18/1GE?
For technical support, including SRIX4K-SBN18/1GE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SRIX4K-SBN18/1GE requirements.
6.How does Aetrix verify that SRIX4K-SBN18/1GE is sourced from the original manufacturer or authorized distributors?
All SRIX4K-SBN18/1GE 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 SRIX4K-SBN18/1GE meets industry standards.
7.What is the process for return or replacement of SRIX4K-SBN18/1GE?
All SRIX4K-SBN18/1GE units undergo pre-shipment inspection (PSI). If there is an issue with SRIX4K-SBN18/1GE, 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 SRIX4K-SBN18/1GE part is unused and in its original packaging.
Return procedure for SRIX4K-SBN18/1GE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SRIX4K-SBN18/1GE 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…
