| PartNumber | SI4031-B1-FMR | SI4031-B1-FM | SI4031-A0-FM |
| Description | RF Transmitter +13 dBm sub-GHz transmitter | RF Transmitter +13 dBm sub-GHz transmitter | RF TX IC FSK 240-930MHZ 20VFQFN |
| Manufacturer | Silicon Laboratories | Silicon Laboratories | - |
| Product Category | RF Transmitter | RF Transmitter | - |
| RoHS | Y | Y | - |
| Packaging | Reel | Tray | - |
| Series | SI4031 | SI4031 | - |
| Brand | Silicon Labs | Silicon Labs | - |
| Moisture Sensitive | Yes | - | - |
| Product Type | RF Transmitter | RF Transmitter | - |
| Factory Pack Quantity | 2500 | 490 | - |
| Subcategory | Wireless & RF Integrated Circuits | Wireless & RF Integrated Circuits | - |
| Tradename | EZRadioPRO | EZRadioPRO | - |
| Type | - | ISM Transmitter | - |
| Operating Frequency | - | 240 MHz to 930 MHz | - |
| Maximum Operating Temperature | - | + 85 C | - |
| Package / Case | - | QFN-20 | - |
| Mounting Style | - | SMD/SMT | - |
| Supply Voltage Max | - | 3.6 V | - |
| Supply Voltage Min | - | 1.8 V | - |
| Minimum Operating Temperature | - | - 40 C | - |
| Operating Supply Current | - | 30 mA | - |
| Unit Weight | - | 0.001515 oz | - |