iFlight BLITZ Mini F7 Stack (E55 Mini 4-in-1 ESC)

The iFlight BLITZ Mini F7 Stack provides high-current power delivery and F7 processing in a compact 20x20mm footprint. Pairing the BLITZ Mini F7 flight controller with the 55A E55 4-in-1 ESC, this stack is purpose-built to drive 5-inch freestyle and racing quads where frame space is at a premium but full-size electrical performance is required.

Key features

• Plug-and-play digital HD VTX connector for clean integration with DJI O3, Walksnail, or HDZero setups.

• Dual onboard BECs supply clean power to both heavy-draw video transmitters and standard 5V logic peripherals.

• Six full hardware UARTs offer extensive support for receivers, GPS modules, and external sensors without inversion issues.

• ESC delivers 55A continuous and 60A burst current per channel, easily handling the aggressive throttle punches of high-kV 6S motors.

Specifications

• MCU: STM32F722

• Gyro: ICM42688 (V1.2, from April 2024) / BMI270 (earlier V1.1 boards)

• Barometer: DPS310

• OSD chip: AT7456

• Mounting pattern: 20x20mm (4mm holes, silicone grommets for M3 screws)

• Input voltage: 2-6S LiPo

• ESC continuous current: 55A

• ESC burst current: 60A

• ESC firmware: BLHeli_32 (G071 MCU), with current sensor

• BEC output: 5V/2.5A, 9V/2A

• UARTs: 6

• Blackbox: 8MB onboard Flash

• Supported firmware: Betaflight

• FC size: 30.5 x 27 mm, 5 g

• ESC size: 35 x 42 mm, 11.3 g

• In the box: FC, 4-in-1 ESC, silicone grommets, FC wiring harness

Pre-soldered with a robust XT60 pigtail and including an external capacitor, this stack drops cleanly into modern tight-clearance frames while leaving ample room for wire routing.