Alternatives to STMicroelectronics HTS221TR
STMicroelectronics HTS221TR and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.
 HTS221TRSTMicroelectronics |  SHT40-AD1B-R2Sensirion AG |  HDC2080DMBRTexas Instruments | +1more | |
|---|---|---|---|---|
| FFF Compatibility | The SHT40 uses a smaller 4-pin DFN package (1.5 x 1.5 mm) with a different pinout compared to the HTS221's 6-HLGA (2.0 x 2.0 mm) package.The physical package is smaller (1.5 x 1.5 mm vs 2.0 x 2.0 mm) and has 4 pins instead of 6 pins.Supports I2C interface but lacks the SPI communication interface available in the HTS221. | The HDC2080 uses a larger 6-pin WSON package (3.0 x 3.0 mm) with a different pinout configuration than the HTS221's 6-HLGA (2.0 x 2.0 mm) package.The physical footprint is larger (3.0 x 3.0 mm vs 2.0 x 2.0 mm) and has a different mounting pad pattern.Communicates via I2C interface only; does not support the SPI interface of the original. | ||
 AI Summary | HTS221TR by STMicroelectronics: Humidity, Temperature 0 ~ 100% RH I2C, SPI ±4.5% RH 10 s Surface Mount. | The SHT40 is highly recommended by STMicroelectronics as a modern replacement. It offers outstanding reliability, much higher accuracy, and lower power consumption, though it requires a PCB footprint redesign and supports only I2C.
| The HDC2080 is a robust, active humidity and temperature sensor from Texas Instruments. It offers comparable power specifications and better accuracy, but requires a board redesign due to the larger WSON-6 package and supports only I2C.
| |
| Lifecycle Status | Obsolete | Active | Active | |
| Market Availability | In stock | In stock | In stock | |
| REACH | REACH | REACH | REACH | |
| RoHS | RoHS | RoHS | RoHS | |
| Description | Humidity, Temperature 0 ~ 100% RH I2C, SPI ±4.5% RH 10 s Surface Mount | Humidity, Temperature 0 ~ 100% RH I2C ±1.8% RH Surface Mount | Humidity, Temperature 0 ~ 100% RH I2C ±2% RH 8 s Surface Mount | |
| Manufacturer | STMicroelectronics | Sensirion AG | Texas Instruments | |
| Type | Humidity, Moisture Sensors | Humidity, Moisture Sensors | Humidity, Moisture Sensors | |
| Datasheet | Open | Open | N/A | |
| Lead Time | 36 weeks | 9 weeks | 12 weeks | |
| Country of Origin | MT | - | - | |
| Export Control Class Number | EAR99 | EAR99 | EAR99 | |
| HTSUS Code | 8542.39.0070 | - | - | |
| Moisture Sensitivity Level | 3 (168 Hours) | - | - | |
| Output | 16b | - | - | |
| Accuracy | ±3.5% RH, ±0.5°C | - | - | |
| Output Type | I²C, SPI | - | - | |
| Sensitivity | 0.004% rH/LSB | - | - | |
| Sensor Type | Humidity, Temperature | - | - | |
| Mounting Type | Surface Mount | - | - | |
| Response Time | 10s | - | - | |
| Package / Case | 6-HLGA | - | - |
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Frequently asked questions
Yes. The STMicroelectronics HTS221TR is marked obsolete, so the manufacturer has discontinued it and any remaining supply is limited to distributor stock. The qualified second sources on this page are active parts you can design in today.
The closest qualified second sources for the STMicroelectronics HTS221TR are the SHT40-AD1B-R2 (Sensirion AG) and the HDC2080DMBR (Texas Instruments), out of 3 matched alternatives in total. Each is compared against the original on fit, form and function in the table above.
Not always. The alternatives to the HTS221TR are matched on function but can differ in package, pinout or a key parameter, so review the fit/form/function notes in the table and the datasheet before designing one in.
The HTS221TR (STMicroelectronics) is a part in the Humidity, Moisture Sensors category. This page lists qualified, cross-referenced replacements for it with a side-by-side comparison.
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