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SCD41

Name: SCD41
Rating: 4.7 (12 reviews)

COMP STIRRUP W/CONTAX 3/0-3/0 AS

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Mfr。パート #SCD41
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データシート
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仕様

Part Status	Active
Packaging	Bulk

概要

Description

The SCD41 is Sensirion’s compact, digital CO2 sensor for indoor air quality, combining a CO2 sensor with both relative humidity and temperature sensing in one package. It provides CO2 concentration (ppm) plus RH (%) and temperature (°C) via a digital I2C interface, with humidity/temperature compensation for accurate readings in typical indoor environments.
Key points:
- One-stop IAQ sensor: CO2 measurement with RH and T sensing.
- Interface: I2C (easy integration with MCUs and microcontroller platforms); factory-calibrated for plug-and-play use.
- Applications: HVAC control, IAQ monitoring, smart buildings, occupant sensing, air-purification devices.
- Benefits: small form factor, low power consumption, robust indoor performance, good long-term stability.
Getting started: connect power and I2C, read the data frame to obtain CO2 (ppm), RH (%), and T (°C); utilize optional low-power modes as needed.

Features

Key features of Sensirion SCD41:
- 3-in-1 sensor: CO2, relative humidity (RH), and temperature (T)
- CO2 range: 400–5,000 ppm; typical accuracy ≈ ±30 ppm + 3% of reading
- RH accuracy ≈ ±2% RH; T accuracy ≈ ±0.3°C
- Digital I2C interface; 7-bit address selectable (e.g., 0x62/0x63)
- Low power: suitable for battery-powered applications; multiple operating/power modes
- Wide supply: typically 1.8–3.6 V
- Automatic Self-Calibration (ASC) and Adaptive Background Calibration (ABC) for long-term drift
- Flexible measurement modes: single-shot and continuous; fast response
- Small LGA package optimized for compact devices
- Robust, factory-calibrated readings with compensation across environmental conditions
Note: exact numbers can vary by revision; consult the latest datasheet for the precise specifications.

Package

SCD41 comes in an LGA (land-grid array) surface-mount package designed for PCB mounting (no-lead, bottom-contact).

Pinout

- Pin count: 6 pins (6‑pin LGA/DFN package)
- Pin functions:
- VDD: power supply
- GND: ground
- SCL: I2C clock
- SDA: I2C data
- ADDR: I2C address select (chooses 7‑bit address, e.g., 0x60 or 0x62)
- ALERT: interrupt/alert output (open-drain)

Manufacturer

- Manufacturer: Sensirion (Sensirion AG).
- What kind of company: A Swiss sensor-technology company that designs and manufactures MEMS-based digital sensors and ICs (e.g., CO2, temperature, humidity, flow) for automotive, industrial, consumer, and medical markets, known for CMOSens technology.

Application

SCD41 is a CO2 sensor with temperature/humidity compensation. Common application areas include:
- Indoor air quality monitoring and ventilation control (HVAC, smart buildings)
- Automotive cabin air quality monitoring
- Air purifiers and ventilation systems
- Offices, classrooms, and workplaces (CO2-based occupancy/air quality management)
- Greenhouses and horticulture CO2 regulation
- Data centers and clean rooms CO2 management
- Portable CO2 meters and handheld air-quality devices

Equivalent

Direct equivalents to the SCD41 do not exist; it’s a digital CO2 sensor with integrated temperature and humidity compensation. Similar options in Sensirion’s line: SCD40/SCD30. Other vendors offer CO2 sensors (not exact equivalents) such as Senseair S8, Vaisala CARBOCAP CO2 sensors, or Amphenol CO2 sensors. For low cost, MH-Z19B (UART) is common but uses a different interface and calibration.