
Espressif Systems
ESP32-WROOM-32E-H4 is a same-series high-temperature candidate for ESP32-WROOM-32E-N4.
ESP32-WROOM-32E-N4 alternatives should be treated as review-required unless pinout and firmware details are checked. Same-series ESP32-WROOM-32E options are the safest starting point.
Supply matches, but peak current not checked.
38-SMD matches; land pattern not checked.
Flash, PSRAM, and revision changes may affect builds.
Some older candidates are NRND.
Direct replacement for ESP32-WROOM-32E-N4 should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Start with ESP32-WROOM-32E-H4; use ESP32-WROOM-32E-N8R2 only if firmware can support more memory.
Pinout and firmware configuration are not checked.

Espressif Systems
ESP32-WROOM-32E-H4 is a same-series high-temperature candidate for ESP32-WROOM-32E-N4.
| Feature / factor | ESP32-WROOM-32E-N4 | ESP32-WROOM-32E-H4 | ESP32-WROOM-32E-N8R2 | ESP32-WROOM-32D-N16 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 38-SMD Module | 38-SMD Module | 38-SMD Module | 38-SMD Module | 38-SMD Module — same catalog package; ESP32-WROOM-32E-N8R2: same catalog package; ESP32-WROOM-32D-N16: same catalog package; ESP32-WROOM-32D-N8: same catalog package |
| Pinout | 38 pins | 38 pins | 38 pins | 38 pins | 38 pins — functions not checked; ESP32-WROOM-32E-N8R2: functions not checked; ESP32-WROOM-32D-N16: functions not checked; ESP32-WROOM-32D-N8: functions not checked |
| Voltage | 3.0-3.6 V | 3.0-3.6 V | 3.0-3.6 V | 3.0-3.6 V | 3.0-3.6 V — same range; ESP32-WROOM-32E-N8R2: same range; ESP32-WROOM-32D-N16: same range; ESP32-WROOM-32D-N8: same range |
| Temperature | -40 to 85 C | -40 to 105 C | -40 to 85 C | -40 to 85 C | -40 to 105 C / -40 to 85 C — wider range; ESP32-WROOM-32E-N8R2: same range; ESP32-WROOM-32D-N16: same range |
| Application | 4 MB, PCB ant | 4 MB, PCB ant | 8 MB + 2 MB PSRAM | 16 MB flash | 4 MB, PCB ant / 8 MB + 2 MB PSRAM / 16 MB flash / 8 MB flash — same memory class; ESP32-WROOM-32E-N8R2: firmware impact; ESP32-WROOM-32D-N16: firmware impact; ESP32-WROOM-32D-N8: flash map check |
| Lifecycle | Active | - | - | - | Active — both active |
Verified drop-in options for ESP32-WROOM-32E-N4 are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.