SENSIRION SCD40-D-R2 Manual

SCD4x
Breaking the size barrier in CO
Features
Photoacoustic NDIR sensor technology PASens®
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Smallest form factor: 10.1 x 10.1 x 6.5 mm
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Reflow solderable for cost effective assembly
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▪ Large output range: 0 ppm – 40'000 ppm
Large supply voltage range: 2.4 – 5.5 V
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Product Summary
The SCD4x is Sensirion's next generation miniature CO
sensor. This sensor builds on the photoacoustic NDIR
sensing principle and Sensirion's patented PASens® and
CMOSens® technology to offer high accuracy at an
unmatched price and smallest form factor. SMD assembly
allows cost- and space-effective integration of the sensor
combined with maximal freedom of design. On-chip signal
compensation is realized with the build-in SHT4x humidity
and temperature sensor.
Device Overview
Products Details
SCD40-D-R2 Base accuracy, specified range
400 – 2'000 ppm
SCD41-D-R2 High accuracy, specified range
400 – 5'000 ppm, single shot
mode supported
SCD42-D-R2 Separate datasheet, see
https://sensirion.com/products/cat
alog/SCD42/
Full product list on page 22
www.sensirion.com
sensing
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CO
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compromise humans' cognitive performance and well-
being. The SCD4x enables smart ventilation systems to
regulate ventilation in the most energy-efficient and
human-friendly way. Moreover, indoor air quality monitors
and other connected devices based on the SCD4x can
help maintaining low CO
productive environment.
Functional Block Diagram
Version 1.3 – September 2022
High accuracy: ±(40 ppm + 5 %)
Digital I C interface
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Integrated temperature and humidity sensor
Low power operation down to < 0.4 mA avg.
@ 5 V, 1 meas. / 5 minutes
is a key indicator for indoor air quality as high levels
concentration for a healthy,
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