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Product Detailed Parameters
- Description：BRIDGE RECT 1PHASE 400V 4A KBU
- Series：-
- Mfr：Taiwan Semiconductor Corporation
- Package：Tray
- Diode Type：Single Phase
- Technology：Standard
- Voltage - Peak Reverse (Max)：400 V
- Current - Average Rectified (Io)：4:00 AM
- Voltage - Forward (Vf) (Max) @ If：1.1 V @ 4 A
- Current - Reverse Leakage @ Vr：5 µA @ 400 V
- Operating Temperature：-55°C ~ 150°C (TJ)
- Mounting Type：Through Hole
- Package / Case：4-SIP, KBU
- Supplier Device Package：KBU
- Grade：-
- Qualification：-
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Overview
The KBU404G is a single-phase silicon bridge rectifier diode manufactured by Taiwan Semiconductor Corporation. It features a maximum average forward rectified current of 4A and a repetitive peak reverse voltage (VRRM) of 400V. The device utilizes a GBU plastic package with four pins, designed for through-hole mounting. Key electrical characteristics include a peak non-repetitive forward surge current (IFSM) of 150A, a maximum DC blocking current of 5μA at rated voltage, and a typical forward voltage drop of 1.1V at full load. The component operates within a junction temperature range of -55°C to +150°C.
Feature Summary
- Glass passivated die structure ensures high reliability and stability under various operating conditions.
- Plastic molding compound meets UL flammability classification 94V-0 standards.
- Terminals are pure tin plated, lead-free, and solderable per MIL-STD-202 Method 208.
Applications
- General-purpose AC to DC power supply circuits
- Battery chargers and adapters
- Industrial control systems requiring isolated bridge rectification
Procurement Notes
Verify the specific manufacturer marking and datasheet revision when sourcing from different distributors. Confirm that the ordering suffix matches the required RoHS compliance and halogen-free status. Ensure the package type corresponds to the PCB footprint requirements before finalizing procurement orders.
Selection Notes
Select this component for applications requiring a 4A continuous current rating with 400V reverse voltage capability. Consider the thermal management requirements due to the 150°C maximum junction temperature limit. Verify that the GBU package dimensions fit the available board space and mounting constraints.
Part Context
This part belongs to the GBU series of single-phase bridge rectifiers from Taiwan Semiconductor. The series offers various voltage ratings ranging from 50V to 1000V while maintaining a consistent 4A current capacity. The GBU404G specifically addresses mid-range voltage applications in compact power conversion designs.
Replacement Considerations
Direct substitutes include KBU404G from Vishay or GBU404X2G from Taiwan Semiconductor. Verify pinout compatibility and thermal resistance values before substitution.
FAQ
What is the maximum operating junction temperature?
The maximum operating junction temperature is +150°C.
Is the device lead-free?
Yes, the terminals are pure tin plated and lead-free, compliant with MIL-STD-202 Method 208.
What is the peak non-repetitive forward surge current?
The peak non-repetitive forward surge current (IFSM) is 150A.
