JeffTron Micro Active Brake II with Wiring

Micro Active Brake II by JeffTron
This is a compact MOSFET module designed for installation in electric airsoft guns regardless of gearbox type. It features active motor braking, which stops the piston in the starting position after each shot. This prevents partial spring tension and prolongs the lifespan of internal components and the spring itself. The unit also eliminates unwanted double shots in SEMI mode in high-rate-of-fire setups. Installing this module results in increased rate of fire and longer battery runtime, as the MOSFET reduces electrical losses compared to traditional wiring.

Key Features

Active motor braking uses the motor’s energy to stop it
No trigger contact arcing, zero idle power draw
Protects and prolongs life of internal gearbox parts
More effective with motors using neodymium magnets
Requires fully functioning cutoff lever and gearbox mechanisms

Technical Specifications

Device dimensions: 27 × 10 × 7 mm
Maximum current: 75 A during shot / 25 A continuous (30 s)
Supported voltage: 8.4–17 V (NiMH, LiPo, LiFe)
Wiring type: 6-wire (power plus signal)
Designed for: AEG gearboxes
Braking: Active, using motor’s residual energy

Package Contents

Micro Active Brake II (with wiring)
Shrink tubing
Printed installation manual

Warning
Installation requires an experienced technician familiar with soldering and disassembling AEGs. Never use a transformer soldering iron!