ESP32-S3FN8
Espressif Systems
Needs validationmedium risk
ESP32-S3FN8 is a same-family QFN56 ESP32-S3 variant needing design review.
Best Alternatives to ESP32-S3
ESP32-S3 alternatives should be treated as design-level candidates unless pinout, memory and boot settings are confirmed.
AI replacement insight
Electrical riskmedium
Voltage and VDD_SPI need checks.
Package riskmedium
QFN56 matches, pinout not proven.
Firmware riskhigh
Flash and PSRAM variants affect builds.
Sourcing risklow
Kept ESP32 candidates are active or indexed.
Can it be replaced directly?
No pin-compatible replacement is verified from the provided data.
Best replacement path
Start with ESP32-S3FN8, then verify pinout, flash, PSRAM and rails.
Main risk
Variant memory, boot strapping and pinout may differ.
Recommended alternatives
1Alternative comparison matrix
| Feature / factor | ESP32-S3 | ESP32-S3FN8 | ESP32-S3R8V | ESP32-S3R2 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | QFN56 7x7 | QFN-56 7x7 | 56-VFQFN EP | 56-VFQFN EP | QFN-56 7x7 / 56-VFQFN EP — same size noted; ESP32-S3R8V: catalog string matches; ESP32-S3R2: catalog string matches |
| Pinout | 56-pin S3 | 56-pin S3 variant | pin_count 0 | pin_count 0 | 56-pin S3 variant / pin_count 0 — map not checked; ESP32-S3R8V: no pin proof; ESP32-S3R2: no pin proof |
| Interface | Wi-Fi/BLE5 | Wi-Fi/BLE5 | Wi-Fi/BLE5 | Wi-Fi/BLE5 | Wi-Fi/BLE5 — same radio class; ESP32-S3R8V: protocol matches; ESP32-S3R2: protocol matches |
| Voltage | 1.8/3.3 V | 3.3 V VDD_SPI | missing | missing | 3.3 V VDD_SPI / missing — rail option differs; ESP32-S3R8V: rail check needed; ESP32-S3R2: rail check needed |
| Temperature | missing | -40 to 85 C | - | - | -40 to 85 C — target not stated |
| Lifecycle | Active | - | Active | Active | Active — catalog active; ESP32-S3R2: catalog active |
Application & sourcing insights
Questions & answers
ESP32-S3FN8 is the best kept candidate here, but it still needs pinout, memory and rail review.