SX1281IMLTRT
SemtechSX1281IMLTRT is a 2.4 GHz LoRa transceiver from Semtech in a QFN-24 4x4 mm package, supporting LoRa, FLRC and (G)FSK modulation with up to +12.5 dBm transmit power and -132 dBm sensitivity, controlled over SPI or UART from a 1.8 V to 3.7 V supply; Semtech lists the product status as Active, and this is the SX1281 variant without ranging. Running LoRa in the globally available 2.4 GHz band removes regional sub-GHz band fragmentation, so one SKU can ship worldwide, and the high data rates of FLRC suit audio-adjacent and fast telemetry links. Selection advice: choose SX1281IMLTRT when worldwide 2.4 GHz operation matters more than the longest sub-GHz range; if the design needs time-of-flight ranging, select the ranging-capable SX1280 variant instead, and plan coexistence with Wi-Fi and Bluetooth traffic in the same band when setting channels and duty cycles. Parameters verified against Semtech documentation.
- MPN
- SX1281IMLTRT
- Manufacturer
- Semtech
- Family
- 2.4 GHz LoRa transceiver
- Package
- QFN-24 4x4 mm
- Manufacturer channel coverage
- Checked by RFQ
- Data last checked
- Commercial check required
- Required order checks
- Suffix, package, date code, lot, source and traceability
Four checks before a commercial offer.
Identity
Exact MPN, manufacturer and suffix
Supply
Supplier type, quantity and freshness
Evidence
Lot, labels, photos and documents
Terms
Price, lead time, payment and shipping
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SX1281IMLTRT FAQ
What should I check before substituting SX1281IMLTRT with another 2.4 GHz LoRa transceiver?
Match the full ordering code, not the series name: package (QFN-24 4x4 mm), temperature grade and packing all ride on the suffixes. A same-series code in a different package is a different orderable device, so confirm the substitute against the Semtech datasheet before changing the BOM.