| PartNumber | SI4432-B1-FM | SI4432-B1-FMR |
| Description | RF Transceiver +20 dBm sub-GHz transmitter | RF Transceiver +20 dBm sub-GHz transmitter |
| Manufacturer | Silicon Laboratories | Silicon Laboratories |
| Product Category | RF Transceiver | RF Transceiver |
| RoHS | Y | Y |
| Type | Sub-GHz | Sub-GHz |
| Frequency Range | 240 MHz to 930 MHz | 240 MHz to 930 MHz |
| Maximum Data Rate | 256 kb/s | 256 kb/s |
| Modulation Format | FSK, GFSK, OOK | FSK, GFSK, OOK |
| Supply Voltage Min | 1.8 V | 1.8 V |
| Supply Voltage Max | 3.6 V | 3.6 V |
| Supply Current Receiving | 18.5 mA | 18.5 mA |
| Supply Current Transmitting | 85 mA | 85 mA |
| Output Power | 20 dBm | 20 dBm |
| Minimum Operating Temperature | - 40 C | - 40 C |
| Maximum Operating Temperature | + 85 C | + 85 C |
| Interface Type | SPI | SPI |
| Package / Case | QFN-20 | QFN-20 |
| Packaging | Tube | Reel |
| Sensitivity | - 121 dBm | - 121 dBm |
| Series | Si4432 | Si4432 |
| Brand | Silicon Labs | Silicon Labs |
| Mounting Style | SMD/SMT | SMD/SMT |
| Supply Current Max | 85 mA | 85 mA |
| Product Type | RF Transceiver | RF Transceiver |
| Factory Pack Quantity | 490 | 2500 |
| Subcategory | Wireless & RF Integrated Circuits | Wireless & RF Integrated Circuits |
| Tradename | EZRadioPRO | EZRadioPRO |
| Unit Weight | 0.001515 oz | 0.000582 oz |
| Maximum Operating Frequency | - | 930 MHz |
| Moisture Sensitive | - | Yes |
| Number of Receivers | - | 1 |
| Number of Transmitters | - | 1 |