Name: SparkFun Qwiic Dynamic NFC/RFID Tag
Brand: SparkFun

Parts › Communication & Wireless › NFC & RFID Readers

SEN-21274 · SparkFunActive

SparkFun Qwiic Dynamic NFC/RFID Tag photo

A dynamic NFC/RFID tag featuring a built-in PCB antenna and 64-kbit of EEPROM that can be accessed via I 2 C or wireless RF, even when the board is unpowered. (SparkFun SEN-21274) Also listed by SparkFun as SPX-19035 (SparkX).

Part number	SEN-21274
Manufacturer	SparkFun
Category	Communication & Wireless › NFC & RFID Readers
Pins	4

SparkFun Qwiic Dynamic NFC/RFID Tag pinout

Pin	Name	Type
1	GND	ground
2	3V3	power
3	SDA	bidirectional
4	SCL	input

Schematic symbol and footprint

Schematic symbol

Footprint: JST-SH 4-pin SMD right-angle (SM04B-SRSS-TB) - Qwiic / STEMMA QT — to scale, pad 1 in yellow (mm). Check against the datasheet before ordering PCBs.