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| PartNumber | SX1240ISTRT | SX1241ISETRT | SX1242ISETRT |
| Description | RF Transmitter SX1240 in SOIC pckge std grade | RF Transmitter INTEGRATED TRANSMITTER | RF Transmitter INTEGRATED TRANSMITTER |
| Manufacturer | Semtech | Semtech | Semtech |
| Product Category | RF Transmitter | RF Transmitter | RF Transmitter |
| RoHS | Y | Y | Y |
| Type | Integrated Transmitter | - | Integrated Transmitter |
| Operating Frequency | 434 MHz, 868 MHz | - | 344.94 MHz |
| Maximum Operating Temperature | + 85 C | - | + 85 C |
| Package / Case | SOIC-EP-8 | - | SOIC-EP-8 |
| Mounting Style | SMD/SMT | - | SMD/SMT |
| Packaging | Reel | Reel | Reel |
| Supply Voltage Max | 3.7 V | - | 3.7 V |
| Supply Voltage Min | 1.8 V | - | 1.8 V |
| Brand | Semtech | Semtech | Semtech |
| Minimum Operating Temperature | - 40 C | - | - 40 C |
| Modulation Format | FSK, OOK | - | OOK |
| Product Type | RF Transmitter | RF Transmitter | RF Transmitter |
| Factory Pack Quantity | 2500 | 2500 | 2500 |
| Subcategory | Wireless & RF Integrated Circuits | Wireless & RF Integrated Circuits | Wireless & RF Integrated Circuits |
| Supply Current Transmitting | 16.5 mA | - | 22 mA |
| Unit Weight | 0.003774 oz | - | - |
| Moisture Sensitive | - | Yes | Yes |