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NXP Semiconductors MF1SEP1031DA4/03KJ
- Part No.:
- MF1SEP1031DA4/03KJ
- Manufacturer:
- NXP Semiconductors
- Category:
- RFID, RF Access, Monitoring ICs
- Package:
- MOA4, Smart Card Module
- Datasheet:
-
MF1SEP1031DA4/03KJ.pdf
- Description:
- MF1SEP1031DA4 - MIFARE Plus SE,
- Quantity:
- Payment:
- Shipping:
Inventory:249,588
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Product details
Overview
MF1SEP1031DA4/03KJ 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 organized in 16 sectors, AES-128 authentication and encryption in Security Level 3, 4-byte NUID, and SOT500-2 plastic leadless module carrier package. It enables secure migration in public transport fare collection systems.
For engineers reviewing the MF1SEP1031DA4/03KJ datasheet, MF1SEP1031DA4/03KJ pinout, MF1SEP1031DA4/03KJ application, or MF1SEP1031DA4/03KJ equivalent, this page delivers verified technical context, memory mapping, security-level behavior, antenna interface details, and real-world deployment guidance for seamless integration into ISO/IEC 14443-A infrastructure.
Technical Context
The MF1SEP1031DA4/03KJ operates across three security levels: SL0 (pre-personalization), SL1 (MIFARE Classic 1K functional compatibility with optional AES authentication), and SL3 (AES-only mode using ISO/IEC 14443-4 protocol). It supports both fixed UID (4-byte NUID) and Random ID modes, with anti-tearing protection for AES key updates and sector trailer writes.
Its RF interface complies fully with ISO/IEC 14443-3A anticollision and ISO/IEC 14443-4 T=CL protocols. Memory access uses CRYPTO1 keys in SL0/SL1 and AES session keys in SL3, with MAC-secured commands and responses. Multi-sector authentication allows single-authentication access across sectors sharing identical AES keys.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory capacity | 1 kB EEPROM, organized as 16 sectors × 4 blocks × 16 bytes; supports value-block operations and binary data storage. |
| Security levels | SL0 (initial personalization), SL1 (MIFARE Classic 1K compatibility + optional AES auth), SL3 (AES-128 3-pass auth, encrypted commands/responses, MAC integrity). |
| UID format | 4-byte Non-Unique Identifier (NUID); write-protected at manufacture; supports Random ID configuration in SL3. |
| RF interface | ISO/IEC 14443-3A compliant; 13.56 MHz carrier; input capacitance 17.0 pF typical; max communication speed 848 kbit/s. |
| Endurance & retention | 200,000 write cycles (typical); 10-year data retention at 22 °C ambient. |
| Package | SOT500-2 plastic leadless module carrier (MOA4), tape-and-reel format; designed for embedding into smart cards or modules. |
| Operating temperature | –25 °C to +70 °C ambient; suitable for indoor and controlled outdoor access control environments. |
Pinout & Package
SOT500-2 (MOA4) plastic leadless module carrier package - surface-mountable RF IC module with integrated antenna bonding pads for direct coil connection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LA | Antenna coil connection A | Primary RF input terminal; connects to one end of external antenna coil; forms resonant LC circuit with internal capacitance (~17 pF). |
| LB | Antenna coil connection B | Secondary RF input terminal; completes antenna loop; enables power harvesting and bidirectional 13.56 MHz communication per ISO/IEC 14443-3A. |
Key Features
| Feature | Design Value |
|---|---|
| Backward compatibility | Fully supports MIFARE Classic 1K command set (MF Authenticate, MF Read/Write, MF Increment/Transfer) in SL1 without infrastructure changes. |
| Secure migration path | Enables phased upgrade from CRYPTO1 to AES: SL1 maintains legacy operation while enabling optional AES originality check; SL3 enforces full AES security. |
| Virtual card concept | Supports Virtual Card Support Last command to retrieve UID after Random ID activation-critical for privacy-aware access systems. |
| NXP originality check | Dedicated AES-based authentication using factory-programmed originality key verifies genuine NXP silicon, preventing counterfeit card deployment. |
| Anti-tearing mechanism | Hardware-enforced atomic update of AES keys and sector trailers in SL3 ensures EEPROM remains in valid state even if RF field is interrupted mid-write. |
Applications
| Public Transportation Fare Collection | Physical Access Control |
|---|---|
Use Scenario: Tap-to-pay transit cards used daily by commuters across metro, bus, and light rail networks. IC Role / Device Role / Timing Role: Contactless PICC executing SL1 transactions with legacy readers; later upgraded to SL3 for fraud-resistant fare capping and multi-operator interoperability. Use Value: Enables incremental infrastructure modernization-existing MIFARE Classic readers continue functioning while new AES-secured backends are deployed. |
Use Scenario: Employee badge granting door access in corporate offices, hospitals, or government facilities. IC Role / Device Role / Timing Role: Secure credential storing biometric templates or access privileges; leverages SL3 MAC-secured read/write for tamper-proof privilege updates. Use Value: Prevents cloning via AES session keys and message authentication codes-eliminates replay and man-in-the-middle attacks on credential data. |
| Electronic Toll Collection (ETC) | University Campus ID Cards |
Use Scenario: Vehicle-mounted or handheld toll tags processed at highway gantries with high-speed, low-latency reads. IC Role / Device Role / Timing Role: High-reliability PICC operating in SL3 with multi-sector authentication to read/write toll balance, trip history, and vehicle class in one transaction. Use Value: Reduces transaction time by eliminating repeated sector authentications-ensures sub-100 ms throughput at 848 kbit/s under dynamic RF conditions. |
Use Scenario: Multi-function student ID integrating library access, meal plan, printing credits, and event entry. IC Role / Device Role / Timing Role: Partitioned EEPROM sectors secured with distinct AES keys per application domain; SL3 enforces strict inter-domain isolation. Use Value: Allows independent management of financial (meal plan), administrative (library), and physical access (dorm doors) data without cross-domain privilege escalation. |
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 |
|---|---|---|---|
| MF1ICS50 | MIFARE Classic 1K IC; CRYPTO1-only; no AES support; 7-byte UID only; no SL3 capability. | Limited to legacy-only deployments; cannot support AES migration path or originality verification. | Select when upgrading infrastructure is not planned and cost sensitivity outweighs long-term security requirements. |
| MF1PLUSX0Y1 | MIFARE Plus X-series; supports SL3+ with enhanced key management, larger memory (2/4 kB), and extended command set (e.g., diversified key derivation). | Required for high-assurance applications like national ID or banking where SL3+ features (e.g., diversified keys) are mandated. | Select when future-proofing against evolving regulatory standards or supporting complex multi-application credential ecosystems. |
Compared with MF1ICS50, MF1SEP1031DA4/03KJ provides a verifiable migration path to AES without reader replacement; compared with MF1PLUSX0Y1, it offers lower cost and simpler integration for SL1/SL3 transition scenarios where extended memory or advanced key diversification is unnecessary.
Availability
MF1SEP1031DA4/03KJ is available at Aetrix Electronics and suitable for public transportation fare collection, physical access control, and electronic toll collection requiring stable component supply, long-term lifecycle assurance, and certified NXP silicon authenticity.
Supply support for MF1SEP1031DA4/03KJ 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 company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and identification markets.
The MIFARE Plus product line was designed to bridge legacy MIFARE Classic infrastructure with modern AES-based security-enabling cost-effective, phased migration for transit authorities, enterprises, and government ID programs.
FAQ
What security levels does MF1SEP1031DA4/03KJ support, and how do they differ?
MF1SEP1031DA4/03KJ supports Security Level 0 (SL0, pre-personalization), SL1 (MIFARE Classic 1K compatibility with optional AES originality check), and SL3 (AES-128 3-pass authentication, encrypted commands, and MAC-secured responses). SL1 maintains full command compatibility with existing MIFARE Classic readers, while SL3 mandates ISO/IEC 14443-4 and disables backward-compatible protocols. MF1SEP1031DA4/03KJ cannot operate in SL2.
Does MF1SEP1031DA4/03KJ support both 4-byte and 7-byte UIDs?
No-MF1SEP1031DA4/03KJ is specifically ordered with a 4-byte Non-Unique Identifier (NUID), as indicated by the "1031" suffix in the part number and confirmed in Table 2 of the datasheet. The 7-byte UID variant is MF1SEP1001DA4/03. Both are write-protected at manufacture and cannot be altered post-production.
How is the MF1SEP1031DA4/03KJ antenna interface implemented, and what are its electrical requirements?
MF1SEP1031DA4/03KJ uses two dedicated bonding pads-LA and LB-for direct connection to an external antenna coil. Its input capacitance is 17.0 pF (typical), forming a resonant LC circuit with the coil's inductance at 13.56 MHz. No external capacitor is required. The module must be matched to 50 Ω impedance for optimal power transfer and read range in ISO/IEC 14443-A systems.
Can MF1SEP1031DA4/03KJ be used in Random ID mode, and what is required to enable it?
Yes-MF1SEP1031DA4/03KJ supports Random ID in Security Level 3. To enable it, the card must be configured during personalization using the appropriate command set (e.g., Virtual Card Support Last). Once activated, the first anticollision loop returns a 3-byte random number instead of the fixed NUID, enhancing user privacy in high-density environments like stadiums or mass transit hubs.
What is the role of the NXP originality function in MF1SEP1031DA4/03KJ, and how is it verified?
The NXP originality function in MF1SEP1031DA4/03KJ uses a factory-programmed AES key to perform cryptographic authentication at the ISO/IEC 14443-4 protocol layer. Readers issue an AES challenge-response exchange; only genuine NXP silicon produces the correct response. This prevents counterfeit cards from entering systems where credential authenticity is critical-such as employee access or fare collection audits.
MF1SEP1031DA4/03KJ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- MOA4, Smart Card Module
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- RFID Transponder
- Frequency:
- 13.56MHz
- Standards:
- ISO 14443
- Interface:
- UART
- Voltage - Supply:
- -
- Operating Temperature:
- -25°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PLLMC
MF1SEP1031DA4/03KJ FAQ
1.How can I place an order for MF1SEP1031DA4/03KJ through Aetrix?
Please submit a Request for Quotation (RFQ) for MF1SEP1031DA4/03KJ 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 MF1SEP1031DA4/03KJ reliable?
The price and inventory of MF1SEP1031DA4/03KJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MF1SEP1031DA4/03KJ is usually 5 days.
3.What payment methods are accepted for MF1SEP1031DA4/03KJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MF1SEP1031DA4/03KJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MF1SEP1031DA4/03KJ?
MF1SEP1031DA4/03KJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MF1SEP1031DA4/03KJ 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 MF1SEP1031DA4/03KJ?
For technical support, including MF1SEP1031DA4/03KJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MF1SEP1031DA4/03KJ requirements.
6.How does Aetrix verify that MF1SEP1031DA4/03KJ is sourced from the original manufacturer or authorized distributors?
All MF1SEP1031DA4/03KJ 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 MF1SEP1031DA4/03KJ meets industry standards.
7.What is the process for return or replacement of MF1SEP1031DA4/03KJ?
All MF1SEP1031DA4/03KJ units undergo pre-shipment inspection (PSI). If there is an issue with MF1SEP1031DA4/03KJ, 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 MF1SEP1031DA4/03KJ part is unused and in its original packaging.
Return procedure for MF1SEP1031DA4/03KJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MF1SEP1031DA4/03KJ Tags
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SL2S2602FTBX
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