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NXP Semiconductors MF1SEP1031DA8/03J
- Part No.:
- MF1SEP1031DA8/03J
- Manufacturer:
- NXP Semiconductors
- Category:
- RFID, RF Access, Monitoring ICs
- Package:
- MOA8, Smart Card Module
- Datasheet:
-
MF1SEP1031DA8/03J.pdf
- Description:
- IC RFID TRANSP 13.56MHZ PLLMC
- Quantity:
- Payment:
- Shipping:
Inventory:1,107
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Product details
Overview
MF1SEP1031DA8/03J from NXP Semiconductors is a contactless smart card IC implementing MIFARE Plus SE security architecture with full backward compatibility to MIFARE Classic 1K. It features 1 kB EEPROM, 4-byte NUID, SOT500-4 plastic leadless module carrier package, and AES-128 authentication in Security Level 3 for secure transit fare collection and access control systems.
For engineers reviewing the MF1SEP1031DA8/03J datasheet, MF1SEP1031DA8/03J pinout, MF1SEP1031DA8/03J application, or MF1SEP1031DA8/03J equivalent, this page delivers verified memory organization, UID configuration options, SL1/SL3 command support, anti-tearing key update capability, and ISO/IEC 14443-3A/14443-4 protocol compliance - all critical for migration planning from legacy CRYPTO1 systems.
Technical Context
The MF1SEP1031DA8/03J operates across three security levels: SL0 (pre-personalization), SL1 (MIFARE Classic 1K functional compatibility with optional AES auth), and SL3 (AES-only ISO/IEC 14443-4 mode). Its 16-sector × 4-block memory layout supports value blocks and binary data with sector-level access control via CRYPTO1 or AES keys.
It implements multi-sector authentication in SL3 when sectors share identical AES keys, enabling single-authentication access across multiple sectors. The chip integrates on-die AES co-processor, true random number generator, CRC unit, and voltage regulator - all powered by 13.56 MHz RF field coupling without external supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory | 1 kB EEPROM organized as 16 sectors × 4 blocks × 16 bytes; supports MIFARE Classic value-block operations in SL1/SL3. |
| UID Type | 4-byte Non-Unique ID (NUID); write-protected at manufacture; enables system-level UID management in high-volume deployments. |
| Security Levels | SL0 (pre-personalization), SL1 (CRYPTO1 + optional AES auth), SL3 (AES-128 3-pass auth, MAC-secured commands/responses). |
| Protocol Support | Fully compliant with ISO/IEC 14443-3A (anticollision, REQA/WUPA/HALT) and ISO/IEC 14443-4 (RATS/PPS/DESELECT) in SL0/SL1/SL3. |
| Input Capacitance | 17.0 pF typical at 13.56 MHz / 2.8 V RMS; optimized for standard 13.56 MHz antenna matching in contactless card modules. |
| Data Retention | 10 years at 22 °C; ensures long-term validity of stored credentials in access cards and transit tickets. |
| Write Endurance | 200,000 cycles typical (excluding anti-tearing protected AES key updates); sufficient for multi-year loyalty or campus card usage. |
Pinout & Package
MF1SEP1031DA8/03J is supplied in SOT500-4 plastic leadless module carrier (MOA8) package - a wafer-level die-on-tape format designed for embedding into contactless smart cards. It has no electrical pins; RF coupling occurs via two antenna bonding pads (LA and LB) connected to an external printed coil.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LA | Antenna coil connection A | RF input terminal for 13.56 MHz carrier; connects directly to one end of embedded planar antenna loop. |
| LB | Antenna coil connection B | RF input terminal for 13.56 MHz carrier; completes resonant LC circuit with LA and external capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| Seamless MIFARE Classic migration path | SL1 provides bit-for-bit functional equivalence to MIFARE Classic 1K while enabling phased infrastructure upgrade to AES. |
| Virtual Card Support | Enables UID retrieval via Virtual Card Support Last command in SL3 with Random ID enabled - critical for privacy-sensitive applications. |
| Anti-tearing for AES keys | Hardware-enforced atomic update of AES keys and sector trailers in SL3 prevents EEPROM corruption during RF field interruption. |
| NXP Originality Check | AES-based authentication using factory-programmed originality key verifies genuine NXP silicon - mitigates counterfeit card risk. |
| Multi-block read/write | Supports reading/writing up to 4 blocks per command in SL1/SL3 - reduces transaction time in high-throughput access gates. |
Applications
| Public Transportation | Access Management |
|---|---|
Use Scenario: Contactless fare payment in metro/bus systems with legacy MIFARE Classic readers. IC Role / Device Role / Timing Role: Secure credential storage and AES-authenticated transaction processing at 848 kbit/s data rate. Use Value: Enables incremental reader firmware upgrades while deploying AES-ready cards today - avoiding stranded inventory. |
Use Scenario: Employee badge system requiring tamper-resistant credential storage and audit-trail-capable value blocks. IC Role / Device Role / Timing Role: Stores encrypted access permissions and supports increment/decrement operations for cafeteria or parking credits. Use Value: Anti-tearing protection ensures credit integrity during power loss; SL3 MACing prevents man-in-the-middle credential cloning. |
| Electronic Toll Collection | School & Campus Cards |
Use Scenario: Vehicle-mounted transponder for highway toll lanes with fast lane throughput requirements. IC Role / Device Role / Timing Role: High-speed (848 kbit/s) ISO/IEC 14443-4 communication with reader; SL3 AES session keys secure each transaction. Use Value: Multi-sector authentication allows single SL3 auth to access toll balance, vehicle ID, and violation history across multiple sectors. |
Use Scenario: Multi-application student ID card supporting library loans, meal payments, and building access. IC Role / Device Role / Timing Role: Sector-isolated data storage with independent access conditions per application; NUID simplifies enrollment database management. Use Value: 4-byte NUID reduces database storage overhead vs. 7-byte UID; value blocks enable real-time cafeteria balance updates without backend sync. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar contactless smart card IC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MF1SEP1001DA8/03 | Same SOT500-4 package and SL0/SL1/SL3 architecture, but uses 7-byte UID instead of 4-byte NUID. | Required where globally unique identifiers are mandated for backend reconciliation or regulatory compliance. | Select MF1SEP1001DA8/03 when UID uniqueness is essential; MF1SEP1031DA8/03 preferred for cost-sensitive, high-volume deployments with centralized UID assignment. |
| MF1SEPH1031DA8/03 | Identical form factor and memory, but features 70 pF input capacitance (vs. 17 pF) for optimized performance with low-inductance antennas. | Better suited for compact wearable or thin-card designs where antenna size limits inductance. | Choose MF1SEPH1031DA8/03 for space-constrained form factors; MF1SEP1031DA8/03 remains optimal for standard ISO/IEC 7816-1/2 card dimensions with conventional antennas. |
Compared with MF1SEP1001DA8/03 and MF1SEPH1031DA8/03, the MF1SEP1031DA8/03 uniquely balances NUID-based scalability, 17 pF antenna tuning for mainstream card antennas, and full SL1/SL3 migration readiness - making it the default choice for new MIFARE Classic replacement programs.
Availability
MF1SEP1031DA8/03J is available at Aetrix Electronics and suitable for public transportation fare collection, physical access control, and electronic toll collection systems requiring stable component supply and long-term lifecycle support.
Supply support for MF1SEP1031DA8/03J 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
NXP Semiconductors is a global semiconductor leader specializing in secure connectivity solutions for automotive, industrial, and identification markets, with over 20 years of leadership in contactless smart card technology.
The MF1SEP1031DA8/03J belongs to the MIFARE Plus SE product line - engineered specifically to enable cost-effective, stepwise migration from MIFARE Classic to AES-based security without replacing existing reader infrastructure.
FAQ
What security levels does the MF1SEP1031DA8/03J support, and how do they differ?
The MF1SEP1031DA8/03J supports Security Level 0 (pre-personalization), Security Level 1 (MIFARE Classic 1K functional compatibility with optional AES authentication), and Security Level 3 (AES-128 only, ISO/IEC 14443-4 protocol). SL1 enables drop-in replacement in legacy systems, while SL3 mandates AES authentication and MAC-secured commands - ensuring end-to-end data integrity. MF1SEP1031DA8/03J transitions between levels via dedicated AES switching keys, with irreversible upward progression only.
How does the 4-byte NUID in MF1SEP1031DA8/03J impact system design compared to 7-byte UID?
The 4-byte NUID in MF1SEP1031DA8/03J is non-unique and intended for use with system-assigned identifiers - reducing backend database storage and simplifying high-volume personalization. Unlike the globally unique 7-byte UID, NUID requires application-layer collision handling but lowers card manufacturing cost and enables efficient batch provisioning. MF1SEP1031DA8/03J retains full SL1/SL3 functionality regardless of UID length.
Can MF1SEP1031DA8/03J be used in existing MIFARE Classic 1K infrastructure without hardware changes?
Yes - MF1SEP1031DA8/03J operates in Security Level 1 with full MIFARE Classic 1K command set (MF Authenticate, MF Read, MF Write, etc.) and identical memory structure. Readers require only firmware updates to enable optional AES authentication; no antenna or RF front-end modifications are needed. MF1SEP1031DA8/03J maintains linear memory mapping and value-block compatibility, ensuring seamless integration into deployed systems.
What is the role of anti-tearing in MF1SEP1031DA8/03J's AES key updates?
Anti-tearing in MF1SEP1031DA8/03J ensures atomic, power-fail-safe updates of AES keys and sector trailers in Security Level 3. If the RF field collapses mid-write, the EEPROM remains in a consistent state - preventing partial key corruption that could brick the card. This hardware-enforced mechanism eliminates need for external backup power or complex host-side recovery logic. MF1SEP1031DA8/03J implements this entirely within the PICC, requiring no reader intervention.
Does MF1SEP1031DA8/03J support Random ID, and how is it activated?
Yes - MF1SEP1031DA8/03J supports Random ID in Security Level 3, configurable during personalization. When enabled, the first anticollision loop returns a 3-byte random number instead of UID; the full UID is retrieved via Virtual Card Support Last command or direct block-0 read. This feature enhances privacy in dense-reader environments and complies with ISO/IEC 14443-3. MF1SEP1031DA8/03J implements Random ID exclusively in SL3, not SL1.
MF1SEP1031DA8/03J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- MOA8, Smart Card Module
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- RFID Transponder
- Frequency:
- 13.56MHz
- Standards:
- ISO 14443
- Interface:
- UART
- Voltage - Supply:
- -
- Operating Temperature:
- -25°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PLLMC
MF1SEP1031DA8/03J FAQ
1.How can I place an order for MF1SEP1031DA8/03J through Aetrix?
Please submit a Request for Quotation (RFQ) for MF1SEP1031DA8/03J 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 MF1SEP1031DA8/03J reliable?
The price and inventory of MF1SEP1031DA8/03J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MF1SEP1031DA8/03J is usually 5 days.
3.What payment methods are accepted for MF1SEP1031DA8/03J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MF1SEP1031DA8/03J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MF1SEP1031DA8/03J?
MF1SEP1031DA8/03J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MF1SEP1031DA8/03J 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 MF1SEP1031DA8/03J?
For technical support, including MF1SEP1031DA8/03J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MF1SEP1031DA8/03J requirements.
6.How does Aetrix verify that MF1SEP1031DA8/03J is sourced from the original manufacturer or authorized distributors?
All MF1SEP1031DA8/03J 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 MF1SEP1031DA8/03J meets industry standards.
7.What is the process for return or replacement of MF1SEP1031DA8/03J?
All MF1SEP1031DA8/03J units undergo pre-shipment inspection (PSI). If there is an issue with MF1SEP1031DA8/03J, 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 MF1SEP1031DA8/03J part is unused and in its original packaging.
Return procedure for MF1SEP1031DA8/03J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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