KBU8A

Description：BRIDGE RECT 1PHASE 50V 8A KBU
Series：-

SKU:091661bf0cb7 Category: Bridge Rectifiers Brand: onsemi

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Product introduction

Product Detailed Parameters

Description：BRIDGE RECT 1PHASE 50V 8A KBU
Series：-
Mfr：onsemi
Package：Bulk
Diode Type：Single Phase
Technology：Standard
Voltage - Peak Reverse (Max)：50 V
Current - Average Rectified (Io)：8:00 AM
Voltage - Forward (Vf) (Max) @ If：1 V @ 8 A
Current - Reverse Leakage @ Vr：10 µA @ 50 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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KBU8A

Overview

The KBU8A is a single-phase silicon bridge rectifier manufactured by onsemi, formerly Fairchild Semiconductor. It features an average forward rectified current of 8.0 A at 50°C ambient temperature and a maximum repetitive reverse voltage of 50 V. The device exhibits a forward voltage drop of 1.0 V per bridge at 8.0 A and supports a non-repetitive peak forward surge current of 300 A. Electrical characteristics are defined at 25°C, with a total bridge reverse leakage current of 10 µA at rated voltage. Thermal resistance from junction to ambient is 18 °C/W per leg, while junction-to-lead resistance is 3.0 °C/W per leg.

Feature Summary

High surge current capability for handling transient loads
Reliable construction technique suitable for printed circuit boards
UL Certificate # E326243

Applications

Printed circuit board mounting applications
General-purpose AC to DC rectification
Power supply input stages

Procurement Notes

Verify the manufacturer origin carefully, as onsemi acquired Fairchild Semiconductor's assets. Ensure the component matches the original Fairchild datasheet specifications if legacy compatibility is required. Confirm the package type is KBU and check for any specific ordering suffixes that might indicate lead-free or tape-and-reel variations.

Selection Notes

Select this component when a low-voltage (50 V) bridge rectifier with an 8 A continuous current rating is needed. Consider the thermal resistance values for heat dissipation calculations in enclosed environments. Verify that the operating junction temperature range of -55°C to +150°C meets the application requirements.

Part Context

This part belongs to the KBU8A-KBU8M series of bridge rectifiers, differentiated primarily by their maximum repetitive reverse voltage ratings ranging from 50 V to 1000 V. All variants share the same 8 A current rating and KBU package footprint, allowing for design flexibility within the same physical constraint.