SI7021-A20-GM

Si7021-A20-GM is a Silicon Labs digital humidity and temperature sensor — I2C interface, ±3% RH humidity accuracy, ±0.4 °C temperature accuracy, −40 to +85 °C, 6-pin DFN-6. The factory-calibrated digital output is the selection point: humidity plus temperature from one 3×3 mm chip with no calibration step on the production line. Selection advice: lifecycle warning — Silicon Labs lists the Si7021-A20-GM as End of Life (LTB announced); for new designs migrate to the current-generation Si70xx/Si71xx sensor, and for repairs and legacy builds we source remaining LTB stock. The A20-GM code pins the DFN-6 package and grade — match it exactly, since the sensor family spans several packages. Evidence: Silicon Labs data confirms EOL/LTB, I2C, ±3% RH, DFN-6. Match the full Si7021-A20-GM code.