
Espressif Systems
Same ESP32-C3 MINI class, but only 85C rated in catalog data.
ESP32-C3-MINI-1-H4 has no proven drop-in substitute in this set. The closest options need temperature, antenna, and pinout review.
Voltage matches on best candidates; temp may not.
Same package string, but land pattern is not checked.
Stay within ESP32-C3 to reduce porting risk.
1U-H4 has NRND evidence.
No verified pin-compatible replacement is supported by the provided data.
Use ESP32-C3-MINI-1-N4 only if 85C is acceptable; use 1U-H4 only with antenna redesign.
Pinout is not verified and the closest parts change either temperature grade or antenna type.

Espressif Systems
Same ESP32-C3 MINI class, but only 85C rated in catalog data.
| Feature / factor | ESP32-C3-MINI-1-H4 | ESP32-C3-MINI-1-N4 | ESP32-C3-MINI-1U-H4 | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 53-SMD Module | 53-SMD Module | 53-SMD Module | 53-SMD Module — same package string; ESP32-C3-MINI-1U-H4: same package string | |
| Pinout | 53 pins | 53 pins | 53 pins | 53 pins — pin map not checked; ESP32-C3-MINI-1U-H4: pin map not proven | |
| Voltage | 3.0-3.6V | 3.0-3.6V | 3.0-3.6V | 3.0-3.6V — same supply range; ESP32-C3-MINI-1U-H4: same supply range | |
| Temperature | -40 to 105C | -40 to 85C | -40 to 105C | -40 to 85C / -40 to 105C — not H temp grade; ESP32-C3-MINI-1U-H4: same temp range | |
| Interface | WiFi + BT5 LE, PCB ant | WiFi + BT5 LE, PCB ant | external connector | WiFi + BT5 LE, PCB ant / external connector — same radio class; ESP32-C3-MINI-1U-H4: RF layout changes | |
| Lifecycle | Active | - | NRND noted | NRND noted — sourcing risk |
ESP32-C3-MINI-1-N4 is the closest catalog match, but it appears limited to 85C.