# ST25R3916B\-AQET (Component)

## Description

RFID Reader/Transponder IC 13\.56MHz FeliCa, ISO 14443, ISO 15693, MIFARE, NFC I2C, SPI 2\.6V \~ 5\.5V 32\-UFQFN Exposed Pad

NFC reader IC for contactless communication, supporting NFC\-A/B, NFC\-F, and NFC\-V protocols with reader/writer, card\-emulation, and peer\-to\-peer modes\. It operates from 2\.6–5\.5 V, supports SPI up to 10 Mbit/s and I²C up to 3\.4 Mbit/s, and uses a 27\.12 MHz crystal oscillator\. The device is housed in a 32\-pin UFQFPN package measuring 5 × 5 mm\. \#NFC \#NFCReader \#RFID \#STMicroelectronics \#ST25R3916B

## Component Details

- **Owner:** silicon\-yard
- **Created:** 8/13/2026
- **Last Updated:** 8/13/2026
- **Visibility:** Public
- **License:** https://creativecommons\.org/licenses/by/4\.0/
- **Datasheet URL:** https://www\.st\.com/resource/en/datasheet/st25r3919b\.pdf
- **Package or Case Code:** 32\-UFQFPN \(5x5\)
- **Symbol Style:** parametric\-v1
- **Part Type:** Integrated Circuits
- **Manufacturer Part Number:** ST25R3916B\-AQET
- **Manufacturer Name:** STMicroelectronics
- **Used in:** 2 projects

## Distributor Pricing (qty 1)

*Pricing shown for quantity 1. For price breaks and other quantities, open in Flux.*

| Distributor | Unit Price (qty 1) | Stock |
|------------|--------------------|-------|
| [Arrow](https://www.arrow.com/en/products/st25r3916b-aqet/stmicroelectronics.html?utm_currency=USD&region=nac) | $4\.3926 | 0 |
| [Digi\-Key](https://www.digikey.com/en/products/detail/stmicroelectronics/ST25R3916B-AQET/18085395) | $6\.34 | 2\.4K |
| [LCSC](https://www.lcsc.com/product-detail/C17315217.html) | $4\.6964 | 3 |
| [Mouser](https://www.mouser.com/en/ProductDetail/STMicroelectronics/ST25R3916B-AQET?qs=rQFj71Wb1eX4vi6O4DqiQQ%253D%253D) | $6\.34 | 41 |

- **Part Type:** Integrated Circuits
- **Sub-Type:** Logic
- **Manufacturer:** STMicroelectronics
- **MPN:** ST25R3916B\-AQET
- **Package / Case Code:** TO
- **Pin Count:** 33
- **Logic Function:** AND
## Pins

| Pin | Name | Type |
|-----|------|------|
| 1 | VDD\_IO |  |
| 2 | TAD2 |  |
| 3 | VDD\_D |  |
| 4 | XTO |  |
| 5 | XTI |  |
| 6 | GND\_D |  |
| 7 | VDD\_A |  |
| 8 | VDD |  |
| 9 | VDD\_RF |  |
| 10 | VDD\_TX |  |
| 11 | VDD\_AM |  |
| 12 | GND\_DR1 |  |
| 13 | RFO1 |  |
| 14 | VDD\_DR |  |
| 15 | RFO2 |  |
| 16 | GND\_DR2 |  |
| 17 | EXT\_LM |  |
| 18 | AAT\_A |  |
| 19 | AAT\_B |  |
| 20 | I2C\_EN |  |
| 21 | VSS |  |
| 22 | RFI1 |  |
| 23 | RFI2 |  |
| 24 | AGDC |  |
| 25 | TAD1 |  |
| 26 | GND\_A |  |
| 27 | IRQ |  |
| 28 | MCU\_CLK |  |
| 29 | BSS |  |
| 30 | SCLK/SCL |  |
| 31 | MOSI |  |
| 32 | MISO/SDA |  |
| 33 | GND |  |

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*Generated from [https://flux\.ai/silicon\-yard/st25r3916b\-aqet](https://flux.ai/silicon-yard/st25r3916b-aqet)*