Key facts
- Brand
- SENSIRION
- Model
- SHT21S
- Industry
- Industrial
- Documents
- 2
- Languages
- EN · ZH
- Last added
- 2012-04-11
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Sensirion SHT21S Humidity and Temperature Sensor Preliminary Datasheet
The SHT21S is a 3 × 3 mm DFN humidity and temperature sensor from Sensirion. It provides calibrated, linearized signals in an analog Sigma‑Delta Modulated (SDM) format and is supplied in tape‑and‑reel packaging.
The document details electrical specifications, mechanical dimensions, soldering guidelines, storage conditions, and re‑conditioning procedures, along with conversion formulas for humidity and temperature outputs.
SENSIRION SHT21S specifications
| Resolution (Humidity) | 10 bit |
|---|---|
| Resolution (Temperature) | 12 bit |
| Typical Accuracy (Humidity) | ±2.0 %RH |
| Typical Accuracy (Temperature) | ±0.3 °C |
| Operating Relative Humidity Range | 0 %RH – 100 %RH |
| Power Dissipation | 0.48 mW |
Source: Sensirion SHT21S Humidity and Temperature Sensor Preliminary Datasheet
All SENSIRION SHT21S documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the package type of the SHT21S sensor?
It is supplied in a DFN (Dual Flat No‑leads) package.
From: Sensirion SHT21S Humidity and Temperature Sensor Preliminary Datasheet
How can the sensor be re‑conditioned after exposure to high humidity?
Bake at 100‑105 °C at <5 %RH for 10 h, then re‑hydrate at 20‑30 °C at ~75 %RH for 12 h.
From: Sensirion SHT21S Humidity and Temperature Sensor Preliminary Datasheet
What supply voltage range does the SHT21S require?
The sensor operates from 2.1 V to 3.6 V.
From: Sensirion SHT21S Humidity and Temperature Sensor Datasheet