±0.4°C Ultra-low-power temperature sensor
The STS4L is a fully digital, highly cost-effective temperature sensor that provides the accuracy required for most applications. It features enhanced signal processing, three distinctive I²C addresses and communication speeds of up to 1 MHz. With a footprint of just 1.5 × 1.5 x 0.5 mm, it is easy to integrate into a variety of applications, and its wide supply voltage range and low power consumption enable battery-powered designs. The STS4L is designed for mass production, has a high signal-to-noise ratio and high process capability, and has a proven record of long-term reliability and stability.
| Temperature | |||
|---|---|---|---|
| Typ. temperature accuracy 0.4 | 0.4 | °C | |
| Operating temperature range [°C] -40 - 125 | -40 - 125 | °C | |
| Response time (τ63%) 2 | 2 | s |
| Generic | |||
|---|---|---|---|
| Supply voltage 1.08 - 3.6 | 1.08 - 3.6 | V | |
| Average supply current 0.4 |
| 0.4 |
| uA |
| Interfaces I²C | I²C |
| Size (LxWxH) 1.5 x 1.5 x 0.55 | 1.5 x 1.5 x 0.55 | mm |
| Packaging size 10'000 | 10'000 | pcs (T&R) |
Buy the following products to evaluate this sensor

Sensirion's sensor solutions are used in a wide range of applications and markets. Our reliable environmental and flow sensors improve energy efficiency, increase health and ensure safety and comfort.
| Part number | Quantity | Distributor name | Country | Uploaded | |
|---|---|---|---|---|---|
| STS4L-AD1B-R3 | 9975 | SOS electronic s.r.o. | SK, HU, DE, PL, CZ | 04.12.2025 | Buy |
| Part number | Quantity | Distributor name | Country | Uploaded | |
|---|---|---|---|---|---|
| STS4L-AD1B-R3 | 8583 | element14 | SG | 04.12.2025 | Buy |
| Part number | Quantity | Distributor name | Country | Uploaded | |
|---|---|---|---|---|---|
| STS4L-AD1B-R3 | 10000 | Arrow Electronics | US | 04.12.2025 | Buy |