LR7843 High-Power MOSFET Trigger Switch Module 30V

Description

LR7843 High-Power MOSFET Trigger Switch Module 30V Specifications for a LR7843 High-Power MOSFET Trigger Switch Module (30 V): 📦 General Information MOSFET type: LR7843 (N-channel, logic-level) Module type: High-power MOSFET trigger switch Control type: Low-level or high-level trigger (logic input) Application: Switching high-current DC loads using microcontroller logic signals ⚡ Electrical Characteristics (MOSFET: LR7843) Drain-Source Voltage (Vds): 30 V max Continuous Drain Current (Id): Up to 100 A (with adequate heatsinking) Practical limit on module PCB: ~10–15 A continuous without extra cooling Rds(on): ~1.7 mΩ at Vgs = 10 V ~2.5 mΩ at Vgs = 4.5 V Gate Threshold Voltage (Vgs(th)): 1–3 V Pulsed Drain Current: 300 A max (very short pulses) Gate Voltage (Vgs) range: ±20 V 📡 Module Control Characteristics Control voltage: 3.3 V or 5 V logic compatible (direct from Arduino, ESP32, STM32, etc.) Trigger type: Low-level trigger: Connect control pin to GND to turn ON load High-level trigger: Connect control pin to Vcc to turn ON load (depends on board version) Power supply for control circuit (Vcc): Usually same as logic voltage (3.3–5 V) 🌡 Environmental Ratings Operating temperature: −55 °C to +150 °C (MOSFET junction) Storage temperature: −55 °C to +150 °C 🔧 Typical Applications Driving high-current DC motors Switching LED strips or other resistive loads Controlling heating elements Battery-powered projects needing high-efficiency switching 💡 Notes The LR7843 MOSFET has e