JeffTron Micro MOSFET III

Micro MOSFET III by JeffTron

The Micro MOSFET is a professionally designed minimalistic electronic switch without active braking. It replaces standard mechanical current switching through trigger contacts, eliminating contact arcing and extending their lifespan while increasing circuit efficiency. The result is higher rate of fire and longer battery runtime compared to standard wiring. This is a compact module recommended especially for experienced technicians and service providers, as it requires advanced knowledge of AEG replicas for installation.

Types of JeffTron MOSFET Units

• MOSFET II – External mosfet designed for springs up to M210.
• Micro MOSFET III – Compact external mosfet for springs up to M170.
• AEP MOSFET – Smallest external mosfet for AEP pistols and SMGs.
• MOSFET V2 – Internal mosfet for V2 gearbox to save space in stock/handguard, for springs up to M170.
• MOSFET V3 – Internal mosfet for V3 gearbox to save space in stock/handguard, for springs up to M170.
• AR MOSFET – Micro MOSFET III powered directly via T-Dean connector, saves space, for V2 trigger contacts and springs up to M170.
• AK MOSFET – Micro MOSFET III powered directly via T-Dean connector, saves space, for V3 trigger contacts and springs up to M170.

Key Features

• Power supply: Up to 17 V (NiMH 8.4–12 V, LiPo 7.4–14.8 V)
• Contact protection: No trigger contact arcing
• No idle power consumption: Doesn’t drain battery when idle
• Simple solution without active braking: Piston stops in random position during burst fire
• Requires functional mechanical gearbox components: Cut-off lever, cam, anti-reversal latch, etc.

Technical Specifications

• Compatibility: AEG gearboxes
• Max current: 90 A peak, 35 A continuous (30 s burst)
• Spring rating: Up to M170
• Voltage: 8.4–17 V (Ni-xx, LiPo, LiFe)
• Module dimensions: 16 × 6.4 × 3.5 mm
• Mounting location: Outside the gearbox
• Wiring: None
• Connector: None

Package Contents

• Micro MOSFET III without wiring
• Heat shrink tubing
• Installation guide

Warning

Installation must be performed by an experienced technician with skills in safely disassembling AEG gearboxes and properly soldering wires. Never use a transformer soldering gun! For easier installation, we recommend the version with wiring and accessories.