ST25R3916B Mini NFC Module is a compact ELECHOUSE 13.56 MHz NFC and HF RFID reader module based on the STMicroelectronics ST25R3916B reader IC. It keeps the core ST25R3916B module function set while moving to a much smaller 27 mm x 20 mm board with an external antenna interface.
The included antenna is a 52 mm x 5.5 mm ultra-slim NFC antenna with anti-metal shielding. This narrow antenna is designed for embedded products where normal NFC antenna space is not available. In ELECHOUSE testing, the bundled antenna can reach about 5 cm reading distance with a MIFARE S50 standard card.
Multiple antenna sizes can be supported, and batch custom antenna dimensions are available for OEM/ODM embedded NFC projects.
Why choose this mini module?
- Only 27 mm x 20 mm module size for space-constrained embedded NFC designs.
- External antenna design, easier to fit into compact enclosures and non-standard product shapes.
- Bundled with a 52 mm x 5.5 mm anti-metal ultra-slim antenna.
- Based on the ST25R3916B reader IC and compatible with the ELECHOUSE ST25R3916 software ecosystem.
- Suitable for customized antenna projects and volume embedded device integration.
Key features
- Based on STMicroelectronics ST25R3916B.
- 13.56 MHz NFC and HF RFID operation.
- Supports ISO 14443A/B, ISO 15693, FeliCa, and NFC Forum tag types.
- Supports NFC-A and NFC-F card emulation at IC level.
- SPI by default, with I2C mode available after board configuration.
- Same software family as the ELECHOUSE ST25R3916 and ST25R3916B NFC modules.
Specifications
| Product name | ST25R3916B Mini NFC Module with Ultra-Slim External Antenna |
|---|---|
| Reader IC | STMicroelectronics ST25R3916B |
| Operating frequency | 13.56 MHz |
| Module size | 27 mm x 20 mm |
| Antenna | External antenna |
| Included antenna | 52 mm x 5.5 mm anti-metal ultra-slim antenna |
| Typical test card | MIFARE S50 standard card |
| Tested read distance | About 5 cm with the bundled antenna in ELECHOUSE testing |
| Host interface | SPI by default, I2C after board configuration |
| Supply input | 5V input to the module |
| Host logic level | 3.3V host logic recommended |
| Connector signals | IRQ, CS, SCLK/SCL, MOSI, MISO/SDA, 5V, GND |
| Package weight | 20 g |
Typical applications
- Space-limited embedded NFC readers.
- Compact access control devices.
- Handheld, wearable, panel-mounted, or enclosure-constrained NFC products.
- Custom embedded NFC terminals that need special antenna dimensions.
- MIFARE, DESFire, ISO 14443, ISO 15693, and FeliCa reader projects.
