Chip

SX1268 vs SX1262 — Feature & Advantage Comparison

Category SX1268 SX1262 Advantage
Manufacturer Semtech Semtech
LoRa Modulation Yes (LoRa only) Yes (LoRa only) Tie
FSK Modulation Yes Yes Tie
Frequency Support 410–810 MHz 150–960 MHz SX1262 (wider)
Coverage Bands 433 / 470 / 868 433 / 868 / 915 SX1262
Package QFN-24 QFN-24 Tie
Pin Compatibility Same family Same family Tie
BUSY Pin Required Yes Yes Tie
Reset Pin Yes Yes Tie
IRQ Pins DIO1–DIO3 DIO1–DIO3 Tie
SPI Interface Mode 0, BUSY handshake Mode 0, BUSY handshake Tie
Max TX Power +22 dBm (external PA) +22 dBm (external PA) Tie
RX Sensitivity ~ -148 dBm ~ -148 dBm Tie
Sleep Current < 200 nA < 200 nA Tie
RX Current ~4.6 mA ~4.6 mA Tie
TX Efficiency High High Tie
RF Switch Control Internal Internal Tie
TCXO Support Yes Yes Tie
Register/Command API Command-based Command-based Tie
LoRaWAN Support Yes Yes Tie
Operating Temperature -40°C → +85°C -40°C → +85°C Tie
Development Ecosystem Growing Mature Slight SX1262
Typical Use Sub-GHz LoRa IoT Broad LoRa IoT SX1262 (flexible)

Key Differences

🌐 Frequency Range

  • SX1262 covers more bands:
    • 150–960 MHz
    • Allows 433, 868, 915, and some 780 MHz
  • SX1268 covers:
    • 410–810 MHz
    • Good for 433 / 470 / 868 (region-dependent)

👉 SX1262 wins for global flexibility


📡 Regional Flexibility and Certification

  • SX1262 is widely supported in:
    • EU (868 MHz)
    • US (915 MHz)
    • AS (433 MHz)
  • SX1268 is often tuned for:
    • China / Asia sub-GHz bands

👉 SX1262 better for multi-region deployment

SX1278 vs SX1268 — Feature & Advantage Comparison

Category SX1278 SX1268 Advantage
Manufacturer Semtech Semtech
LoRa Modulation LoRa, FSK, OOK LoRa, (G)FSK Tie
Frequency Band 137–525 MHz 410–810 MHz Depends on region
Typical Use Band 433 MHz 433 / 470 / 868 MHz SX1268 wider
Package QFN-28 QFN-24 SX1278 easier breakout
Pin Compatibility ❌ No ❌ No
SPI Interface SPI Mode 0 SPI Mode 0 + BUSY pin SX1278 simpler
BUSY Pin Required ❌ No ✅ Yes SX1278 simpler
Reset Handling Simple RESET RESET + BUSY handshake SX1278 simpler
IRQ Pins DIO0–DIO5 (flexible) DIO1–DIO3 (fixed roles) SX1278 more flexible
Max Output Power +20 dBm (PA_BOOST) +22 dBm (external PA) SX1268
RX Sensitivity ~-148 dBm ~-148 dBm Tie
RX Current ~10–12 mA ~4.6 mA SX1268
TX Efficiency Moderate High efficiency PA SX1268
Sleep Current ~1 µA < 200 nA SX1268
Wake-up Time Slow Very fast SX1268
RF Switch Control External logic Internal control pins SX1268
TCXO Support Limited Native TCXO control SX1268
Packet Engine Older Improved SX1268
Register Map Direct register access Command-based API SX1278 simpler
Driver Complexity Simple More complex SX1278 easier
Arduino / Pi Libraries Very mature Mature but newer SX1278
LoRaWAN Support Yes Yes Tie
Power Optimization Basic Advanced sleep & duty-cycle SX1268
Production Status Legacy Current generation SX1268

Summary

SX1278 — Strengths

  • Simple hardware design
  • No BUSY pin required
  • Very mature libraries
  • Easy for hobby & legacy projects

SX1268 — Strengths

  • Much lower power consumption
  • Better TX efficiency
  • Internal RF switch control
  • Native TCXO support
  • Modern architecture
  • Better for battery-powered devices