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NXP Semiconductors MF1SEP1031DA4/03J
- Part No.:
- MF1SEP1031DA4/03J
- Manufacturer:
- NXP Semiconductors
- Category:
- RFID, RF Access, Monitoring ICs
- Package:
- MOA4, Smart Card Module
- Datasheet:
-
MF1SEP1031DA4/03J.pdf
- Description:
- IC RFID TRANSP 13.56MHZ PLLMC
- Quantity:
- Payment:
- Shipping:
Inventory:4,742
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Product details
Overview
MF1SEP1031DA4/03J 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 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 seamless migration in public transport and access control systems requiring ISO/IEC 14443-3A compliance and value-block support.
For engineers reviewing the MF1SEP1031DA4/03J datasheet, MF1SEP1031DA4/03J pinout, MF1SEP1031DA4/03J application, or MF1SEP1031DA4/03J equivalent, this page delivers verified technical context, memory mapping, security-level behavior, antenna interface details, and real-world deployment guidance - all grounded in NXP's official short data sheet Rev. 3.1 (2017).
Technical Context
The MF1SEP1031DA4/03J operates across three security levels: SL0 (pre-personalization), SL1 (MIFARE Classic 1K–compatible with optional AES auth), and SL3 (AES-only, ISO/IEC 14443-4/T=CL protocol). It supports multi-sector authentication when sectors share identical AES keys, eliminating repeated auth overhead for cross-sector transactions.
Its memory includes a manufacturer block (sector 0, block 0), 15 user sectors each with 3 data blocks + 1 sector trailer, and AES keys stored separately atop EEPROM. Anti-tearing protection ensures atomic updates of AES keys and sector trailers in SL3, preserving data integrity during field interruption.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory | 1 kB EEPROM, 16 sectors × 4 blocks × 16 bytes; supports MIFARE Classic value-block operations (Increment/Decrement/Transfer) in SL1 and SL3. |
| Security | AES-128 authentication, encryption, and MACing in SL3; CRYPTO1 key support (2×48-bit/sector) and AES key storage (2×128-bit/sector) coexist. |
| UID | 4-byte NUID (non-unique identifier); write-protected at production; compatible with ISO/IEC 14443-3 anticollision cascade level 1. |
| Protocol Support | Fully implements ISO/IEC 14443-3A (REQA/WUPA/ANTICOLLISION/HALT); SL3 mandates ISO/IEC 14443-4 (RATS/PPS/DESELECT) only. |
| Input Capacitance | 17.0 pF typical at 13.56 MHz / 2.8 V RMS; critical for antenna tuning and RF coupling efficiency in embedded card modules. |
| Endurance & Retention | 200,000 write cycles (excluding anti-tearing-protected AES key writes); 10-year data retention at 22 °C ambient. |
| Operating Temp | −25 °C to +70 °C ambient; validated for industrial-grade deployment in parking, transit, and campus access terminals. |
Pinout & Package
MF1SEP1031DA4/03J uses the SOT500-2 plastic leadless module carrier (PLLMC) package, designed for embedding into contactless smart cards and wearable form factors. The device interfaces exclusively via RF - no electrical pins - with two dedicated antenna bonding pads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LA | Antenna coil connection A | Primary RF input terminal; connects to one end of external planar antenna loop; requires impedance matching to ~17 pF input capacitance. |
| LB | Antenna coil connection B | Secondary RF input terminal; completes resonant LC tank with LA and external antenna; defines operating frequency at 13.56 MHz. |
Key Features
| Feature | Design Value |
|---|---|
| Seamless MIFARE Classic migration path | SL1 delivers full functional equivalence to MIFARE Classic 1K - including value-block commands and memory layout - enabling infrastructure upgrades without reader replacement. |
| Virtual Card concept | Enables UID retrieval via Virtual Card Support Last command in SL3 with Random ID enabled, supporting privacy-aware system designs compliant with ISO/IEC 14443-4. |
| NXP originality check | Hardware-accelerated AES authentication using factory-programmed originality key verifies genuine NXP silicon at protocol layer, preventing counterfeit integration. |
| Multi-block read/write | Supports single-command read/write of up to 4 blocks (64 bytes) in SL1 and SL3, reducing transaction time versus byte-by-byte transfers in legacy systems. |
| Configurable access conditions | Per-sector access bits define independent read/write/auth rights for keys A/B and data blocks - enabling granular permission models across applications like loyalty + access on same card. |
Applications
| Public Transportation | Access Management |
|---|---|
|
Use Scenario: Contactless fare payment in metro/bus systems with legacy MIFARE Classic readers upgraded incrementally. IC Role / Device Role / Timing Role: Secure credential storage and AES-authenticated value-block transactions (e.g., balance decrement) at SL1 or SL3. Use Value: Enables phased infrastructure modernization: SL1 maintains compatibility while SL3 activation secures backend systems against cloning - all on same MF1SEP1031DA4/03J card stock. |
Use Scenario: Multi-site corporate access with role-based permissions (e.g., lab vs. office zones) and audit logging. IC Role / Device Role / Timing Role: Tamper-resistant identity token storing encrypted credentials; SL3 enforces mutual authentication before granting zone-specific access. Use Value: AES-encrypted command/response and MAC-verified integrity prevent relay attacks and unauthorized sector reads - meeting ISO/IEC 27001 physical access controls. |
| Electronic Toll Collection | School & Campus Cards |
|
Use Scenario: High-speed vehicle identification at toll plazas where sub-500 ms transaction latency is mandatory. IC Role / Device Role / Timing Role: Fast-value transfer IC supporting Increment/Transfer MACed commands in SL3 to update toll balance without re-auth per sector. Use Value: Multi-sector authentication reduces auth overhead; 848 kbit/s communication speed and optimized MAC handling ensure <400 ms total transaction time. |
Use Scenario: Unified student ID supporting library borrowing, cafeteria payments, and dormitory entry on single card. IC Role / Device Role / Timing Role: Multi-application secure element partitioning memory into isolated sectors (e.g., sector 1 = library, sector 2 = meal plan). Use Value: Freely configurable access conditions per sector allow independent key management - e.g., cafeteria AES key updated weekly without affecting library access permissions. |
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 standard; 1 kB EEPROM; same SOT500-2 footprint. | Lacks SL3 AES security and SL1 optional authenticity check; suitable only for greenfield deployments without migration requirements. | Select MF1ICS50 only if infrastructure remains fully CRYPTO1-based and long-term security upgrade path is not required. |
| MF1PLUSX0Y1 | MIFARE Plus X-series IC; supports SL3+ with enhanced side-channel resistance; 4-/7-byte UID; 1 kB/4 kB variants; SOT500-2/4 packages. | Higher security certification (e.g., Common Criteria EAL5+) and extended lifecycle; not drop-in due to different key management and command extensions. | Choose MF1PLUSX0Y1 when new deployments demand certified high-assurance security beyond SL3 baseline - not for direct MF1SEP1031DA4/03J replacement. |
Compared with MF1ICS50, MF1SEP1031DA4/03J adds AES migration capability and NXP originality verification without changing card form factor; compared with MF1PLUSX0Y1, it offers lower-cost SL1/SL3 transition but lacks advanced tamper resistance and extended certifications - making it optimal for cost-sensitive, phased-upgrade projects.
Availability
MF1SEP1031DA4/03J is available at Aetrix Electronics and suitable for public transportation fare collection, physical access control, and electronic toll collection systems requiring stable component supply, long-term lifecycle assurance, and ISO/IEC 14443-3A compliance.
Supply support for MF1SEP1031DA4/03J 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 IoT applications, with headquarters in Eindhoven, Netherlands.
The MF1SEP1031DA4/03J belongs to NXP's MIFARE Plus SE product line - engineered specifically to enable secure, backward-compatible migration from MIFARE Classic infrastructure to AES-based authentication while minimizing reader hardware changes.
FAQ
What security levels does the MF1SEP1031DA4/03J support, and how do they differ?
The MF1SEP1031DA4/03J supports Security Level 0 (pre-personalization), SL1 (MIFARE Classic 1K–compatible with optional AES authenticity check), and SL3 (AES-128–only, ISO/IEC 14443-4 protocol). SL0 allows key provisioning; SL1 maintains full functional equivalence to MIFARE Classic 1K while adding optional AES verification; SL3 mandates mutual AES authentication, encrypted commands/responses, and MAC-verified integrity - with no backward compatibility protocol support. MF1SEP1031DA4/03J cannot downgrade security levels once upgraded.
Does the MF1SEP1031DA4/03J support both 4-byte and 7-byte UIDs?
No - the MF1SEP1031DA4/03J is specifically ordered with 4-byte NUID (Non-Unique Identifier), as confirmed in Table 2 of the ordering information. It does not support 7-byte UID; that variant is designated MF1SEP1001DA4/03. The 4-byte NUID is write-protected at production and used in ISO/IEC 14443-3 anticollision cascade level 1, requiring system-level handling for non-uniqueness.
How is the MF1SEP1031DA4/03J physically interfaced in a smart card design?
The MF1SEP1031DA4/03J uses a contactless RF interface only - it has no electrical pins or solder pads for wired connection. It is mounted in the SOT500-2 plastic leadless module carrier package and bonded directly to an embedded planar antenna via LA and LB terminals. Antenna design must match the device's 17.0 pF typical input capacitance and 13.56 MHz resonance for reliable coupling. MF1SEP1031DA4/03J requires no external power supply or clock source.
Can the MF1SEP1031DA4/03J be used in systems requiring Random ID functionality?
Yes - MF1SEP1031DA4/03J supports Random ID in Security Level 3. When enabled, the first anticollision loop returns a 3-byte random number instead of the fixed NUID. The UID can then be retrieved using the Virtual Card Support Last command or by reading block 0. This feature enhances privacy in environments where persistent identifiers pose tracking risks, and is implemented per ISO/IEC 14443-3 and documented in Section 8.2 of the datasheet.
What is the memory structure of the MF1SEP1031DA4/03J, and how are value blocks implemented?
The MF1SEP1031DA4/03J contains 1 kB EEPROM organized into 16 sectors (0–15), each with 4 blocks of 16 bytes. Sector 0 block 0 holds manufacturer data; remaining sectors provide 3 data blocks + 1 sector trailer per sector. Value blocks - used for counters (e.g., balance, entries) - are configured via access bits and support MF Increment, MF Decrement, and MF Transfer commands in SL1 and SL3. All operations require successful mutual authentication, and value-block integrity is enforced by anti-tearing mechanisms in SL3.
MF1SEP1031DA4/03J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- MOA4, 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
MF1SEP1031DA4/03J FAQ
1.How can I place an order for MF1SEP1031DA4/03J through Aetrix?
Please submit a Request for Quotation (RFQ) for MF1SEP1031DA4/03J 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 MF1SEP1031DA4/03J reliable?
The price and inventory of MF1SEP1031DA4/03J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MF1SEP1031DA4/03J is usually 5 days.
3.What payment methods are accepted for MF1SEP1031DA4/03J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MF1SEP1031DA4/03J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MF1SEP1031DA4/03J?
MF1SEP1031DA4/03J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MF1SEP1031DA4/03J 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 MF1SEP1031DA4/03J?
For technical support, including MF1SEP1031DA4/03J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MF1SEP1031DA4/03J requirements.
6.How does Aetrix verify that MF1SEP1031DA4/03J is sourced from the original manufacturer or authorized distributors?
All MF1SEP1031DA4/03J 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 MF1SEP1031DA4/03J meets industry standards.
7.What is the process for return or replacement of MF1SEP1031DA4/03J?
All MF1SEP1031DA4/03J units undergo pre-shipment inspection (PSI). If there is an issue with MF1SEP1031DA4/03J, 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 MF1SEP1031DA4/03J part is unused and in its original packaging.
Return procedure for MF1SEP1031DA4/03J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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