ST25R3915-AQWT STMicroelectronics Integrated Circuit (Quad Flat No-Lead) In Stock
ST25R3915-AQWT is an STMicroelectronics AEC-Q100 automotive-grade high-frequency NFC/RFID reader IC delivering up to 1 W RF output power on the 13.56 MHz band with a supply voltage range of 2.4 V to 5.5 V. It supports ISO 15693, ISO 14443A/B, and NFC-V protocols in a compact 32-lead QFN package. Designed for automotive keyless entry and EV charging authentication applications.
- Manufacturer
- STMicroelectronics
- Package
- Quad Flat No-Lead
- Pin Count
- 33
- Lifecycle
- ACTIVE
- Datasheet
- ST25R3915-AQWT Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 1 W RF output power at 13.56 MHz enabling long-range NFC reading up to 20 cm in automotive access and payment applications
- AEC-Q100 qualified with 2.4 V to 5.5 V supply range covering automotive 3.3 V and 5 V power rails across -40°C to +125°C
- Multi-protocol support for ISO 14443A/B, ISO 15693, and NFC-V in a single 32-lead QFN enabling universal card and tag compatibility
Applications
ST25R3915-AQWT is deployed in automotive keyless-entry and passive-entry passive-start (PEPS) systems where it reads NFC-enabled key fobs and smartphones at distances up to 20 cm using its 1 W RF output. It supports EV charging station authentication via ISO 15693 and ISO 14443 contactless smart cards, enabling plug-and-charge workflows in electric vehicle supply equipment (EVSE). The AEC-Q100 qualification and wide operating temperature range of -40°C to +125°C also make it suitable for in-vehicle toll tag readers and fleet management transponder systems.
Specifications
| 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 | AEC-Q100 |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 2.4V |
| 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 CONTROLLER |
| Package | Quad Flat No-Lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.31.00.30 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What RF output power and frequency does ST25R3915-AQWT deliver for automotive NFC applications?
ST25R3915-AQWT delivers up to 1 W of RF output power at 13.56 MHz, the standard HF NFC operating frequency. This output level supports reader-to-tag communication distances of up to 20 cm, sufficient for automotive passive-entry and payment applications without an external power amplifier.
Which NFC and RFID protocols does ST25R3915-AQWT support for multi-card system designs?
ST25R3915-AQWT supports ISO 14443A, ISO 14443B, ISO 15693, and NFC-V protocols in a single IC, covering the full range of contactless smart cards, NFC Forum tags, and HF RFID transponders. This multi-protocol capability means one design handles classic MiFare 13.56 MHz cards alongside modern NFC smartphones and ISO 15693 vicinity tags without hardware changes.
How does AEC-Q100 certification affect ST25R3915-AQWT's suitability for underdash automotive NFC readers?
AEC-Q100 Grade 1 certification confirms ST25R3915-AQWT has been stress-tested across a junction temperature range of -40°C to +125°C, meeting automotive reliability requirements for underdash and door-module environments. Non-qualified commercial NFC ICs are typically rated only to +85°C, which is insufficient for enclosed automotive cabins that can reach 105°C in summer parking conditions.
What supply voltage range does ST25R3915-AQWT accept and how does this simplify automotive power design?
ST25R3915-AQWT operates from 2.4 V to 5.5 V, covering both 3.3 V and 5 V automotive ECU power rails without a dedicated LDO for the NFC front-end. This dual-voltage compatibility reduces BOM components and allows the same PCB design to be used in 3.3 V CMOS-dominant platforms and 5 V legacy systems across different vehicle models.
Related Guides
CL31A107MQHNNNE 1206 100 uF MLCC Selection Guide
How to choose CL31A107MQHNNNE and related 1206 MLCCs for low-voltage bulk capacitance and regulator stability.
Jul 2, 2026
CL05B103KB5NNNC 0402 10 nF X7R MLCC Selection Guide
How to choose CL05B103KB5NNNC and related 0402 MLCCs for bypassing, filtering, voltage derating, and sourcing.
Jul 2, 2026
ADAQ7768-1 Design Guide for Precision Vibration and Dynamic Signal Measurement
Design ADAQ7768-1 precision data acquisition channels for vibration and dynamic sensing with the right bandwidth, reference, clock, and layout choices.
Jun 30, 2026
AD5204BRZ10 Design Guide for SPI-Controlled Gain and Offset Calibration
Design AD5204BRZ10 digital potentiometer calibration loops with bounded trim span, safe wiper current, clean SPI routing, and reliable startup codes.
Jun 30, 2026
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.
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.”