ST25R3917-AQET STMicroelectronics Integrated Circuit (Quad Flat No-Lead) In Stock
ST25R3917-AQET is a high-performance NFC universal device and EMVCo reader IC from STMicroelectronics operating at 2.6 V to 5.5 V, supporting ISO 15693, ISO 14443, and NFC standards in a compact 32-pin QFN package.
- Manufacturer
- STMicroelectronics
- Package
- Quad Flat No-Lead
- Pin Count
- 33
- Lifecycle
- ACTIVE
- Datasheet
- ST25R3917-AQET Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $3.3500(MOQ 100)
- Temp Range
- -40.0°C to 105.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of ST25R3917-AQET?
- Supports ISO 14443 A/B, ISO 15693, and NFC Forum Tag 1-5 protocols in a single device, replacing up to 3 discrete reader ICs in multi-standard contactless payment and access-control designs
- EMVCo certified reader compliant with NFC Forum specifications enables Level 1 payment terminal certification without external RF front-end components
- Integrated automatic antenna tuning (AAT) adjusts matching network impedance in real time, maintaining 13.56 MHz read range despite PCB layout tolerances and nearby metals
- 2.6 V to 5.5 V supply range and SPI/I2C host interface simplify integration into 3.3 V IoT MCU platforms and 5 V industrial reader designs
What is ST25R3917-AQET used for?
The ST25R3917-AQET is used in point-of-sale payment terminals, transit fare-gate readers, and smart-door access controllers that must simultaneously accept NFC mobile payments, ISO 14443 contactless cards, and ISO 15693 vicinity tags from a single antenna. Its EMVCo compliance and automatic antenna tuning make it the preferred front-end for self-service kiosks and ATMs where card read distance and certification are both critical. The device also suits industrial asset-tracking readers and healthcare wristband scanners that require reliable tag detection across varying tag orientations at up to 15 cm read range.
What are the specifications of ST25R3917-AQET?
| JESD-30 Code | S-PQCC-N32 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | LCC32,.2SQ,20 |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Screening Level | ISO 15693 |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 2.6V |
| Supply Voltage-Nom | 3.3V |
| Surface Mount | YES |
| Technology | CMOS |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| uPs/uCs/Peripheral ICs Type | NFC CONTROLLERS |
| Package | Quad Flat No-Lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.31.00.30 |
Where can I find the ST25R3917-AQET datasheet?
ST25R3917-AQET Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for ST25R3917-AQET?
Compatible alternatives and drop-in replacements for ST25R3917-AQET:
Frequently Asked Questions
Which NFC and RFID protocol standards does the ST25R3917-AQET support simultaneously?
The ST25R3917-AQET supports ISO 14443 Type A and Type B at 106 kbit/s to 848 kbit/s, ISO 15693 at up to 26.48 kbit/s, and NFC Forum Tag types 1 through 5 including FeliCa at 212 kbit/s and 424 kbit/s. A single reader IC therefore handles contactless credit cards, NFC phone payments, proximity fobs, and vicinity labels without a second RF front-end.
What does automatic antenna tuning in the ST25R3917-AQET mean for production reliability?
The integrated automatic antenna tuning (AAT) circuit continuously monitors the antenna impedance and adjusts an internal capacitor array to maintain resonance at 13.56 MHz. This compensates for PCB-to-PCB tolerance variations of ±10% in inductance and for metallic enclosures that detune the antenna by up to 30%, reducing the need for factory calibration steps and improving read range consistency across production units.
How does EMVCo certification of the ST25R3917-AQET speed up payment terminal qualification?
EMVCo Level 1 certification verifies that the analog RF interface meets waveform shape, power level, and demodulation sensitivity requirements for contactless payments. Using a pre-certified front-end such as the ST25R3917-AQET significantly reduces the scope of Level 1 testing for the terminal design, cutting certification time from 6-12 months to as little as 2-4 months, since the reader IC's RF performance is already on record with EMVCo.
What supply voltage and interface options does the ST25R3917-AQET offer for integration into an IoT gateway design?
The device operates from 2.6 V to 5.5 V with a nominal 3.3 V supply, drawing approximately 100 mA during active transmission and under 2 µA in standby mode. It communicates with a host MCU via SPI at up to 6 MHz or I2C at 400 kHz, making it directly compatible with most 32-bit Cortex-M MCUs and 8-bit AVR platforms used in IoT gateways and embedded readers.
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Why Buy from FindMyChip
About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 100+ | $4.6000 | $460.00 |
| 250+ | $4.3600 | $1090.00 |
| 500+ | $3.9100 | $1955.00 |
| 4000+ | $3.3500 | $13400.00 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”
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