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SparkFun CO2 Humidity and Temperature Sensor - SCD40 (Qwiic)

SEN-22395 · SparkFunActive

SparkFun CO2 Humidity and Temperature Sensor - SCD40 (Qwiic) photo

The SparkFun Qwiic CO2 Humidity and Temperature Sensor features the SCD40 CO2 from Sensirion©. (SparkFun SEN-22395)

Part numberSEN-22395
ManufacturerSparkFun
CategorySensors › Gas & Air Quality
Pins4

SparkFun CO2 Humidity and Temperature Sensor - SCD40 (Qwiic) pinout

PinNameTypeDescription
1GNDground
23V3power
3SDAbidirectional
4SCLinput

Schematic symbol and footprint

3V32SCL4SDA3GND1
Schematic symbol
1234MPMP
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.

Where to buy

SupplierStockPriceStatus
Mouser1$82.15 (1+)View
DigiKey10$82.15 (1+)ActiveView

Stock and prices from the suppliers, checked 2026-10-08; excluding tax and shipping.

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