Descripción
Technical Specifications
Chip Model: Topaz512
Communication Protocol: ISO/IEC 14443-3 Type A, compatible with NFC Forum Type 1 Tag standard
Operating Frequency: 13.56 MHz
Data Transmission Method: ASK modulation, supports NFC device point-to-point communication
Storage Capacity:
Total Capacity: 512-bit EEPROM
User Available Space: 488-bit (partially used for system information)
Storage Structure: 12 pages × 8 bytes/page, each page can be read and written independently
Unique Identifier (UID): 7 bytes (56 bits) unique serial number, factory-fixed and unchangeable
Read/Write Cycles: 100,000 times (100,000 erase/write cycles)
Data Retention Time: Over 10 years
Operating Distance: Typical 0~5 cm, dependent on reader power and antenna design
Power supply: Passive design, powered by electromagnetic field induction from the reader
Packaging: Standard smart card (PVC) or various forms such as self-adhesive labels and epoxy labels
Key Features
NFC Forum Type 1 Compatibility: Can be directly read by all NFC-enabled smartphones (Android/iOS) without additional drivers or authentication.
Write Protection: Supports permanent lock bits to prevent tampering with critical data.
Low Power Consumption and Patch-and-Use: No battery required, suitable for smart interaction in static scenarios such as posters, packaging, and business cards.
Highly Flexible Packaging: Can be made into various forms such as cards, tags, wristbands, and keychains, supporting customized printing and pre-written UID.
Anti-Interference Design: Maintains stable communication capabilities even in metallic environments or complex electromagnetic fields (with anti-metal materials).
Supports Dynamic Interaction: Can be used to trigger phone actions such as opening web pages, making phone calls, sending text messages, and connecting via Bluetooth.
Why Choose the Topaz 512 NFC Card?
The Topaz 512 offers an outstanding balance between memory size and compatibility, making it ideal for affordable, high-frequency NFC applications. Its strong ISO compliance ensures smooth integration with most NFC-enabled devices. With 512 bytes of memory, it can store URLs, IDs, or promotional data with ease, making it an excellent choice for marketing campaigns, digital identification, or public transit.
Application Areas
• Smart Marketing: NFC smart posters, interactive product packaging, brand anti-counterfeiting verification
• Ticketing Management: Concert tickets, event admission tickets, one-time electronic tickets
• Identity Recognition: Visitor cards, temporary passes, exhibition badges
• Smart Office: NFC business cards, quick Wi-Fi connection, meeting check-in system
• Asset Management: Document and archive tracking, small device tags, library management
• Consumer Electronics: Mobile NFC payment tags, speaker quick pairing, smart home triggers
Compared to the Mifare series, the Topaz512, while having smaller storage, offers superior smartphone compatibility due to its native support for the NFC Forum standard, making it particularly suitable for lightweight, highly interactive applications.
Technical Specifications
| Attribute | Details |
|---|---|
| Material | PVC, PET, PET-G, PC |
| Size | CR80 standard (86×54mm), custom sizes available |
| Chip | Topaz 512 (ST SRI512) |
| Frequency | 13.56MHz |
| Memory | 512 bytes EEPROM (16 blocks, 32 bits per block) |
| Protocols | ISO14443 A, ISO18092 |
| Power Supply | Passive, powered by an external radio wave |




