MUR460 4A 600V Ultrafast Rectifier Diode DO-201AD

MUR460 4A 600V Ultrafast Rectifier Diode DO-201AD is a high-performance power semiconductor designed specifically for demanding high-frequency switching applications where minimizing power loss is critical. This diode features an exceptionally low reverse recovery time (t_rr), which allows it to switch rapidly with minimal energy dissipation compared to standard rectifiers. Consequently, the MUR460 significantly improves the efficiency of power supplies and converters. With a robust 600V reverse voltage rating and 4A continuous forward current capability, this diode offers an ideal combination of voltage handling and speed. Therefore, engineers frequently select the MUR460 for use in snubber circuits, free-wheeling applications, and power factor correction stages where high reliability and speed are mandatory.

Key Features:

• Ultrafast Recovery Time: The low reverse recovery time of typically 50 ns ensures minimal switching losses, making it perfect for high-speed switching circuits (>20 kHz).
• High Voltage Handling: Offers a substantial 600 V repetitive peak reverse voltage (V_RRM), enabling use in power supplies connected to 230 V_AC lines.
• High Current Capacity: Handles a continuous average forward current (I_F(AV)) of 4.0 A, making it suitable for moderate power applications.
• Low Forward Voltage Drop: Minimizes power dissipation during the conduction cycle, improving overall system thermal performance.
• Axial-Lead Package: The robust DO-201AD through-hole package simplifies mounting and offers excellent heat dissipation capabilities.

Technical Specifications:

• Repetitive Peak Reverse Voltage (V_RRM): 600 V
• Average Rectified Current (I_F(AV)): 4.0 A (at T_C = 100°C)
• Non-Repetitive Peak Surge Current (I_FSM): 125 A (8.3 ms half-sine wave)
• Max Forward Voltage Drop (V_F): Typically 1.3 V (at 4 A, T_A = 25°C)
• Reverse Recovery Time (t_rr): Maximum 75 ns (Typically 50 ns)
• Operating Junction Temperature (T_J): −65°C to +175°C

Mechanical Specifications:

• Package Type: DO-201AD (Axial Lead, Through-Hole)
• Lead Material: Tinned Copper or equivalent
• Mounting: Requires proper heat sinking for high-current applications, typically by soldering leads to large copper pads.
• Polarity: Band color designates the cathode end.

Dimensions:

• Body Diameter: ≈ 5.6 mm
• Body Length: ≈ 9.5 mm
• Lead Diameter: ≈ 1.2 mm
• Total Length (Lead to Lead): ≈ 63.5 mm

Pinout and Wiring:

• Anode (Non-Band Side): This side accepts the current flow. Connect the anode to the positive input terminal or source.
• Cathode (Band Side): The colored band (usually white or silver) identifies the cathode. Current exits from this terminal.
• Wiring Note: Always connect the cathode side to the load or the downstream circuit you wish to protect or power. Furthermore, ensure you observe the polarity strictly in DC circuits to prevent damage.

Datasheet Reference:

• Download ON Semiconductor MUR460 Datasheet

Commonly Used in:

• Switch Mode Power Supplies (SMPS): Essential components in the output rectification stage for minimizing losses.
• DC-DC Converters: Used as free-wheeling or boost diodes in high-frequency topology designs.
• Motor Control Circuits: Providing rapid free-wheeling protection for inductive loads like solenoids and motor windings.

Applications:

• Output Rectification: Converting high-frequency AC ripple back into smooth DC in power supplies.
• Power Factor Correction (PFC): Serving as the boost diode in continuous conduction mode (CCM) PFC stages.
• High-Frequency Inverters: Used in the switching legs of inverters where fast turn-off is necessary to maintain waveform integrity.

Equivalent Models:

• UF4007: A standard ultra-fast diode, however, the MUR460 typically offers superior thermal performance and surge capability.
• HER508: A high-efficiency rectifier with similar current ratings but often slower recovery time (t_rr).
• BYV32-500: Another ultrafast rectifier with comparable voltage and current ratings, which designers can often use as a substitute.

Package Includes:

• 1 x MUR460 4A 600V Ultrafast Rectifier Diode DO-201AD