KBP307 3A 1000V Diode Bridge Rectifier

KBP307 3A 1000V Diode Bridge Rectifier is a compact, high-performance silicon rectifier designed to convert alternating current (AC) into direct current (DC) across a wide range of power supply applications. This robust component handles a substantial continuous forward current of up to 3A, which allows it to manage medium-power electronic loads efficiently. Consequently, it serves as an excellent foundational block for linear and switching power supplies. Furthermore, its high peak repetitive reverse voltage rating of 1000V protects your circuits from unpredictable voltage spikes and surges on the AC mains. Therefore, you can reliably integrate the KBP307 into consumer appliances, industrial controls, and battery chargers to achieve stable, efficient power rectification.

Key Features:

• High Surge Current Capability: The internal construction withstands high non-repetitive forward surge currents up to 80A, protecting the circuit during initial power-on phases.
• Low Forward Voltage Drop: Features a minimal forward voltage drop across each diode, optimizing power efficiency and minimizing heat dissipation during active rectification.
• Molded Plastic Case: The rugged, flame-retardant plastic housing carries a UL 94V-0 flammability rating, ensuring a high level of safety in commercial designs.
• In-Line Package configuration: The compact inline terminal arrangement saves critical printed circuit board (PCB) real estate and simplifies manual or automated assembly.
• High Reliability: Employs glass passivated pellet junctions, which significantly enhance thermal stability and extend the overall lifespan of the component.

Technical Specifications:

• Maximum Recurrent Peak Reverse Voltage (V_RRM): 1000 V
• Maximum RMS Voltage (V_RMS): 700 V
• Maximum DC Blocking Voltage (V_DC): 1000 V
• Maximum Average Forward Rectified Current (I_AV): 3.0 A (at T_C ≤ 50°C)
• Peak Forward Surge Current (I_FSM): 80 A (8.3 ms single half sine-wave superimposed on rated load)
• Maximum Forward Voltage Drop (V_F): 1.1 V per element (at 3.0 A DC)
• Maximum DC Reverse Current (I_R): 10 μA (at rated DC blocking voltage, T_A ≈ 25°C)
• Operating and Storage Temperature Range: −55°C to +150°C

Mechanical Specifications:

• Package Type: KBP Molded Plastic Case
• Terminals: Plated leads solderable per MIL-STD-202, Method 208
• Polarity: Polarity symbols molded directly onto the plastic body
• Mounting Position: Any position allowed for layout flexibility

Dimensions:

• Body Length: ≈ 14.7 mm
• Body Height: ≈ 11.2 mm
• Body Thickness: ≈ 4.5 mm
• Lead Pitch (Spacing between pins): ≈ 3.81 mm
• Lead Length: ≈ 15.2 mm minimum
• Weight: ≈ 1.33 g

Pinout and Wiring:

• Pin 1 (+ / Positive DC Output): Outputs the rectified positive DC voltage to the filter capacitor and load circuit.
• Pin 2 (~ / AC Input): Connects to one of the incoming AC supply lines from the transformer secondary or mains.
• Pin 3 (~ / AC Input): Connects to the second incoming AC supply line from the transformer secondary or mains.
• Pin 4 (− / Negative DC Output): Connects to the DC ground or negative reference point of the output circuit.
• Wiring Note: However, always place a smoothing electrolytic capacitor across the positive and negative output pins to filter the remaining AC ripple and achieve a clean DC output voltage.

Datasheet Reference:

• Download Diodes Incorporated KBP307 Datasheet

Commonly Used in:

• AC-to-DC Adapters: Serving as the primary rectification stage in wall chargers for electronics.
• Mains Power Supplies: Operating as the input rectifier in small-scale Switched-Mode Power Supplies (SMPS).
• Audio Equipment: Rectifying transformer outputs in audio pre-amplifiers and instrument amplifiers.

Applications:

• Full-Wave Rectification: Converting full AC sine waves into pulsating DC waveforms with minimal power loss.
• Power Line Isolation: Protecting downstream low-voltage circuitry from accidental AC input reversals.
• Home Automation Modules: Providing stable DC power blocks within smart switches, relays, and small appliances.

Equivalent Models:

• RS307: A functionally identical 3A 1000V bridge rectifier, although package dimensions may slightly vary depending on the manufacturer.
• KBP310: A higher voltage variant rated for up to 1000V with identical pin configurations, offering a direct upgrade path.
• GBU410: A higher current 4A alternative, however, it utilizes a slightly larger inline package profile.

Package Includes:

• 1 x KBP307 3A 1000V Diode Bridge Rectifier