| PartNumber | HPP845E131R5 | HPP845E131R1 | HPP845E131R4 |
| Description | Board Mount Humidity Sensors DIG REL HUM IC W/TEMP OUT PTFE | Board Mount Humidity Sensors DIG REL HUMIDITY IC W/TEMP OUT | Board Mount Humidity Sensors DIG REL HUM IC W/TEMP OUT PTFE |
| Manufacturer | TE Connectivity | TE Connectivity | TE Connectivity |
| Product Category | Board Mount Humidity Sensors | Board Mount Humidity Sensors | Board Mount Humidity Sensors |
| RoHS | Y | Y | Y |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | DFN-EP-6 | DFN-EP-6 | DFN-EP-6 |
| Packaging | Reel | Reel | Reel |
| Series | HTU21D | HTU21D | HTU21D |
| Brand | Measurement Specialties | Measurement Specialties | Measurement Specialties |
| Product Type | Humidity Sensors | Humidity Sensors | Humidity Sensors |
| Factory Pack Quantity | 5000 | 1500 | 400 |
| Subcategory | Sensors | Sensors | Sensors |