The MUR30100PT is a dual-chip, center-tap ultra-fast recovery rectifier diode housed in a heavy-duty TO-247 (TO-3P) through-hole package. Engineered for high-frequency switch-mode power rectification, the MUR30100PT features a reverse breakdown voltage rating of 1000V, a total forward current capacity of 30A (15A per diode leg), low forward voltage drop, and an ultra-fast reverse recovery time (t_rr) of under 60ns. It is widely used in high-voltage switch-mode power supplies (SMPS), solar inverters, uninterruptible power supplies (UPS), welding machines, and high-frequency freewheeling diode stages.

Specifications

• Brand / Manufacturer: ON Semiconductor / Vishay / Microsemi / Industry Standard
• Part Number / Marking: MUR30100PT / U30100PT
• Diode Configuration: Dual Common Cathode (Center Tap)
• Maximum Repetitive Peak Reverse Voltage (V_RRM): 1000V (500V to 1000V series rating)
• Maximum DC Reverse Voltage (V_R): 1000V
• Average Rectified Forward Current (I_F(AV)): 30A Total (15A per Diode Leg at T_C = 120°C)
• Non-Repetitive Peak Forward Surge Current (I_FSM): 150A (8.3ms half sine-wave per leg)
• Maximum Instantaneous Forward Voltage (V_F): < 1>F = 15A, T_J = 25°C) / < 1>J = 150°C)
• Maximum Reverse Recovery Time (t_rr): < 60ns>F = 0.5A, I_R = 1.0A, I_rr = 0.25A)
• Maximum Reverse Leakage Current (I_R): < 10>J = 25°C / < 500>J = 150°C
• Operating Junction & Storage Temperature Range: -65°C to +175°C
• Package / Case: TO-247AC / TO-3P (Pin 1: Anode 1, Pin 2: Common Cathode / Tab, Pin 3: Anode 2)

Features

• Ultra-Fast Reverse Recovery Time: Reduces reverse recovery switching losses and transient EMI generation during high-frequency operation up to several hundred kHz.
• Dual Common Cathode Design: Features two balanced 15A diode legs in a center-tap configuration to simplify full-wave secondary rectification circuits.
• High Reverse Voltage Withstand: 1000V blocking voltage provides exceptional safety margins against inductive voltage spikes in off-line power systems.
• Platinum Doped / Planar Passivated Junction: Ensures low reverse leakage current, stable avalanche characteristics, and high thermal reliability up to 175°C junction temperature.
• Heavy-Duty TO-247 Package: Large copper mounting tab provides superior thermal conductivity and easy direct heatsink mounting for high-wattage power supplies.

Common Applications

• High-Power SMPS Secondary Rectification: Center-tap full-wave output rectification in high-power industrial power supplies and telecom rectifiers.
• Inverters & UPS Systems: High-frequency output rectification and freewheeling in pure sine wave solar inverters and battery backup units.
• Welding Equipment & Plasma Cutters: Secondary high-current rectification in inverter-based welding power sources.
• Freewheeling & Snubber Clamping: Suppressing inductive kickback across primary switches (MOSFETs/IGBTs) in high-voltage motor drives and inductive heaters.
• High-Voltage Battery Chargers: Fast rectification in electric vehicle (EV) charging stations and high-current battery chargers.

Usage Tips

• Heatsink Mounting: Always mount the TO-247 package to an adequately sized aluminum heatsink using thermal paste. Use an insulating mica/silicone pad and shoulder washer if the heatsink must remain electrically isolated (Center Pin 2 and the mounting tab are tied to the Common Cathode).
• Parallel Configuration: For single-channel circuits requiring up to 30A continuous capacity, bridge Pin 1 (Anode 1) and Pin 3 (Anode 2) together on the PCB.
• Snubber Protection: When switching high currents at high frequencies, place a parallel RC snubber network across each diode leg to suppress ringing caused by trace inductance.
• Minimize PCB Loop Area: Keep the traces between the transformer secondary, the diode package, and the filter capacitors as short and wide as possible to reduce parasitic inductance and minimize high-frequency noise emissions.

Datasheet