RFC4K 4000V Rectifier Diode Rectifier Diode DO-41

RFC4K 4000V Rectifier Diode DO-41 is a specialized high-voltage semiconductor component designed to provide reliable rectification in circuits that experience extreme electrical stress. This robust diode features an impressive peak repetitive reverse voltage rating of 4000V, which allows it to function safely in demanding power supply and protection environments. Consequently, it serves as a critical barrier against reverse current flow in high-tension applications. The device utilizes a standard DO-41 axial-lead package, ensuring straightforward integration into existing through-hole PCB layouts. Furthermore, its construction prioritizes low leakage current and high reliability, making it an ideal choice for engineers who require a durable solution for voltage multiplication or high-voltage DC regulation. Therefore, you should specify the RFC4K diode when your design demands superior dielectric strength and consistent performance under high-voltage conditions.

Key Features:

• Ultra-High Voltage Rating: The device handles a peak repetitive reverse voltage of up to 4000V, providing a significant safety margin for high-tension power circuits.
• Low Reverse Leakage: This diode maintains exceptionally low leakage current during reverse bias, which minimizes power loss and prevents heat buildup.
• High Surge Capability: It withstands high momentary forward surge currents, protecting the circuit during initial power-on or unexpected load spikes.
• Standard DO-41 Packaging: The compact axial lead design facilitates easy mounting and soldering in standard industrial and consumer electronic assemblies.
• Diffused Junction: The diffused junction construction ensures stable electrical characteristics over a wide operating temperature range.

Technical Specifications:

• Peak Repetitive Reverse Voltage (V_RRM): 4000 V
• Average Forward Current (I_F(AV)): 200 mA (at T_A = 25°C)
• Maximum Forward Voltage Drop (V_F): ≈ 4.0 V to 5.0 V (at rated current)
• Non-Repetitive Peak Forward Surge Current (I_FSM): 30 A (8.3ms single half sine-wave)
• Maximum Reverse Current (I_R): 5.0 μA (at rated V_RRM)
• Operating Junction Temperature: −50°C to +150°C

Mechanical Specifications:

• Case Material: Molded Plastic (UL 94V-0 Flame Retardant)
• Lead Material: Tinned Copper Leads (Solderable per MIL-STD-202)
• Polarity: Color band denotes the cathode end.
• Mounting Position: Any (Horizontal or Vertical through-hole)

Dimensions:

• Body Diameter: ≈ 2.7 mm
• Body Length: ≈ 5.2 mm
• Lead Diameter: ≈ 0.8 mm
• Overall Length: ≈ 55.0 mm (including leads)

Pinout and Wiring:

• Anode: The lead without the color band. Connect this to the positive side of the circuit or the AC source.
• Cathode: The lead marked with a white or silver color band. This is the output side for rectified positive DC voltage.
• Wiring Note: Always ensure the voltage across the diode does not exceed 4000V. Additionally, provide adequate spacing between high-voltage traces to prevent electrical arcing on the PCB surface.

Datasheet Reference:

• Download RFC4K High Voltage Rectifier Datasheet

Commonly Used in:

• CRT Monitors: Legacy television and computer monitors use these diodes in their high-voltage flyback sections.
• Electrostatic Precipitators: These devices rely on high-voltage DC for air filtration and industrial dust collection.
• X-Ray Equipment: Power supplies for X-ray tubes require robust rectification to generate thousands of volts.

Applications:

• High Voltage Power Supplies: Converting high-voltage AC to DC for specialized laboratory or industrial equipment.
• Voltage Multipliers: Used in Cockcroft-Walton generator circuits to step up voltage through multiple stages.
• Laser Power Sources: Providing the necessary bias for gas discharge or solid-state laser pumping.
• Inductive Load Snubbing: Protecting against high-voltage back-EMF spikes in large relay or motor circuits.

Equivalent Models:

• 2CL series: Various 4000V high-voltage silicon stacks offer similar rectification properties.
• HVM12: A high-voltage leaded diode often used as a replacement in consumer electronics.
• R5000: However, check the forward current rating as some R-series diodes support higher currents but have different physical dimensions.

Package Includes:

• 1 x RFC4K 4000V Rectifier Diode (DO-41 Package)