KBU4A

Description：BRIDGE RECT 1PHASE 50V 4A KBU
Series：-

SKU:739010d243eb Category: Bridge Rectifiers Brand: onsemi

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Product introduction

Product Detailed Parameters

Description：BRIDGE RECT 1PHASE 50V 4A KBU
Series：-
Mfr：onsemi
Package：Bulk
Diode Type：Single Phase
Technology：Standard
Voltage - Peak Reverse (Max)：50 V
Current - Average Rectified (Io)：4:00 AM
Voltage - Forward (Vf) (Max) @ If：1 V @ 4 A
Current - Reverse Leakage @ Vr：5 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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KBU4A

Overview

The KBU4A is a single-phase bridge rectifier manufactured by onsemi, utilizing silicon technology within the KBU plastic package. It supports an average rectified forward current of 4.0 A at 50°C ambient temperature and withstands a maximum repetitive reverse voltage of 50 V. The device features a peak non-repetitive forward surge current rating of 200 A and a maximum forward voltage of 1.0 V per bridge at rated current. Operating junction temperatures range from -55°C to +150°C, with storage temperatures spanning the same interval. Thermal resistance values are specified as 19°C/W junction-to-ambient and 4.0°C/W junction-to-lead.

Feature Summary

High surge current capability for handling transient loads
Reliable construction technique suitable for general-purpose applications
Ideal for printed circuit board mounting

Applications

General purpose AC-to-DC full-wave rectification
Monitor and TV power supplies
Printer and SMPS adapter circuits
Audio equipment and home appliances

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and specific manufacturing lot codes against current datasheet revisions. Ensure proper handling procedures are followed during installation to maintain thermal and electrical integrity.

Selection Notes

Select this component when a 50 V reverse voltage rating and 4 A continuous current capacity are required. Consider the KBU package dimensions for PCB layout constraints. Evaluate thermal management requirements based on the specified junction-to-ambient resistance values under expected operating conditions.

Part Context

This part belongs to the KBU4A-KBU4M series of single-phase bridge rectifiers. The series offers varying reverse voltage ratings from 50 V to 1000 V while maintaining consistent current and thermal characteristics across all variants in the family.

Replacement Considerations

Compatible substitutes include Vishay KBU4A-E4 and Taiwan Semiconductor KBU402G, which share identical 4 A current ratings and 50 V reverse voltage specifications within the KBU package format.

How to buy

Online and offline orders are supported. If the item is available for online purchase, you can place it in the cart; for wholesale pricing, please contact our product manager for a quote.

Payment Method

Payment methods: T/T, WeChat Pay, credit cards, Google Pay, Apple Pay . Buyer covers shipping, fees, duties, and taxes; contact our product manager if you need a contract/procurement process.

Delivery time

In-stock items usually ship within 24 hours. Otherwise, shipment is arranged 1 to 2 days after the items arrive at our warehouse. Timing depends on destination and shipping method.

Freight calculation

Freight cost depends on destination, package size, and weight . We offer shipping options via DHL, FedEx, UPS, and TNT , and can ship using your freight account upon request.

Mode of Transportation

We ship via DHL, FedEx, UPS, and TNT. If you prefer a specific logistics provider, we can ship using your designated carrier.

Return and Refund

Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.