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ST25R3916B-AQET

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STMicroelectronics RFID ICs, UFQFPN-32(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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ST25R3916B-AQET

STMicroelectronics · RFID ICs · UFQFPN-32(5x5)

ST25R3916B-AQET from STMicroelectronics, in a UFQFPN-32(5x5). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 VDD_IO power_in Positive supply for peripheral communication.
2 TAD1 output Test output 2.
3 VDD_D power_out Digital supply regulator output.
4 XTO output Crystal oscillator output.
5 XTI input Crystal oscillator input, in test mode used as digital input (clock).
6 GND_D power_in Digital ground.
7 VDD_A power_out Analog supply regulator output.
8 VDD power_in External positive supply.
9 VDD_RF power_out Regulated driver supply for antenna drivers.
10 VDD_TX power_in External positive supply for the TX part.
11 VDD_AM power_out Regulated driver supply for AM modulation.
12 GND_DR1 power_in Antenna driver ground, including driver VSS.
13 RFO1 output Antenna driver output.
14 VDD_DR power_in Antenna driver positive supply input.
15 RFO2 output Antenna driver output.
16 GND_DR2 power_in Antenna driver ground, including driver VSS.
17 EXT_LM output External load modulation MOS gate driver.
18 AAT_A output AAT tune voltage for variable capacitor AAT_A.
19 AAT_B output AAT tune voltage for variable capacitor AAT_B.
20 I2C_EN input I2C interface enable.
21 VSS power_in Ground, die substrate potential.
22 RFI1 input Receiver input.
23 RFI2 input Receiver input.
24 AGDC bidirectional Analog reference voltage.
25 TAD2 bidirectional Test output 1.
26 GND_A power_in Analog ground.
27 IRQ output Interrupt request output.
28 MCU_CLK output Clock output for MCU.
29 BSS input SPI enable (active low).
30 SCLK input SPI clock / I2C clock.
31 MOSI input SPI data input.
32 MISO tri_state Serial peripheral interface data output / I2C data line.
33 Thermal_pad power_in Thermal pad (GND) for heat dissipation.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package UFQFPN-32(5x5)
Category RF And Wireless
Pins 33

CAD (KiCad official)

  • Symbol: ST25R3916B-AQET
  • Footprint: Package_DFN_QFN:UFQFPN-32-1EP_5x5mm_P0.5mm_EP3.5x3.5mm
  • 3D model: UFQFPN-32(5x5) (KiCad packages3D, STEP)
  • 3D model files: st25r3916b-aqet-etched.step / st25r3916b-aqet-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); st25r3916b-aqet.step / st25r3916b-aqet.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: STMicroelectronics datasheet (165 pp, sha256 a54950349f10a713, retrieved 2026-10-01, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF