# SHT40-AD1B-R2 (Component) ## Description Humidity, Temperature 0 ~ 100% RH I2C ±1.8% RH Surface Mount SHT4x is a digital sensor platform for measuring relative humidity and temperature at different accuracy classes. Its I2C interface provides several preconfigured I2C addresses while maintaining an ultra-low power budget (0.4 μW). The power-trimmed internal heater can be used at three heating levels thus enabling sensor operation in demanding environments. The four-pin dual-flat-no-leads package is suitable for surface mount technology (SMT) processing and comprises an optional on-package patented PTFE membrane or a removable protective cover. Sensor specific calibration certificates according to ISO17025, identifiable through unique serial numbers, are available. • Accuracies ΔRH = ±1.0 %RH, ΔT = ±0.1 °C • VDD = 1.08 V … 3.6 V • Avg. current: 0.4 µA, Idle current: 80 nA • I2C FM+, CRC checksum, multip. I2C addr. • Patented protection options1 , PTFE membrane and removable protective cover • Operating range: 0 … 100 %RH, −40…125 °C • Fully functional in a condensing environment • Power heater, true NIST-traceability • JEDEC JESD47 qualification • Sensor-specific calibration certificate acc. to ISO 17025: 2017, 3-point temp. calibration #CommonPartsLibrary #Sensor ## Component Details - **Owner:** lcsc - **Created:** 11/4/2024 - **Last Updated:** 5/28/2026 - **Visibility:** Public - **Manufacturer Name:** Sensirion AG - **Part Type:** Humidity Sensors/Temperature and Humidity Sensors - **Package or Case Code:** DFN-4_L1.5-W1.5-P0.8 - **JLCPCB Part Class:** Extended Part - **Manufacturer Part Number:** SHT40-AD1B-R2 - **Symbol Style:** parametric-v1 - **Datasheet URL:** https://sensirion.com/media/documents/33FD6951/67EB9032/HT_DS_Datasheet_SHT4x_5.pdf - **Used in:** 287 projects ## Distributor Pricing (qty 1) *Pricing shown for quantity 1. For price breaks and other quantities, open in Flux.* | Distributor | Unit Price (qty 1) | Stock | |------------|--------------------|-------| | [Arrow](https://www.arrow.com/en/products/sht40-ad1b-r2/sensirion-ag?utm_currency=USD&region=asia) | N/A | N/A | | [Digi-Key](https://www.digikey.com/en/products/detail/sensirion-ag/SHT40-AD1B-R2/13532084) | $2.72 | 0 | | [HQonline](https://www.hqonline.com/product-detail/temperature-and-humidity-sensors-sensirion-sht40-ad1b-r2-2500356138) | $1.87644 | 133 | | [LCSC](https://www.lcsc.com/product-detail/temperature and humidity sensor_sensirion_sht40-ad1b-r2_C2909890.html) | $1.7171 | 739 | | [Mouser](https://www.mouser.com/ProductDetail/Sensirion/SHT40-AD1B-R2?qs=zW32dvEIR3scTT6A4VuzaQ%3D%3D) | $1.88 | 2.7K | | [Verical](https://www.verical.com/pd/sensirion-temperature-and-humidity-sensors-SHT40-AD1B-R2-7392250?utm_currency=USD) | N/A | N/A | - **Part Type:** Sensors - **MPN:** SHT40-AD1B-R2 - **Mount Type:** Surface Mount - **Package / Case Code:** TO - **Pin Count:** 5 ## Pins | Pin | Name | Type | |-----|------|------| | 3 | VDD | | | 1 | SDA | | | 2 | SCL | | | 4 | VSS | | | 5 | EP | | --- *Generated from [https://www.flux.ai/lcsc/sht40-ad1b-r2~frfh](https://www.flux.ai/lcsc/sht40-ad1b-r2~frfh)*