KBU4B

Description：BRIDGE RECT 1PHASE 100V 4A KBU
Series：-

SKU:0d7e338805bd Category: Bridge Rectifiers Brand: onsemi

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Product introduction

Product Detailed Parameters

Description：BRIDGE RECT 1PHASE 100V 4A KBU
Series：-
Mfr：onsemi
Package：Bulk
Diode Type：Single Phase
Technology：Standard
Voltage - Peak Reverse (Max)：100 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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KBU4B

Overview

The onsemi KBU4B is a single-phase bridge rectifier designed for surface-mount applications. It features a peak repetitive reverse voltage (Vrrm) of 400 V and a maximum average forward rectified current (Io) of 4 A. The device utilizes a KBU package with four pins, providing a compact form factor suitable for space-constrained designs. Key electrical characteristics include a maximum RMS input voltage of 280 V and a non-repetitive peak forward surge current (I fsm) of 150 A. Operating temperatures range from -55°C to +175°C, ensuring reliability in demanding environments.

Feature Summary

Surface-mount bridge rectifier configuration
High thermal stability up to 175°C
Compact KBU package design

Applications

AC-DC power supply circuits
General-purpose rectification
Battery charging systems

Procurement Notes

Verify the specific ordering suffix against the official datasheet to confirm exact specifications. Ensure compatibility with surface-mount assembly processes. Confirm RoHS compliance status if required by project regulations. Cross-reference the manufacturer's latest documentation for any updates to mechanical dimensions or electrical ratings prior to final procurement decisions.

Selection Notes

Select this component when a surface-mount bridge rectifier with 4 A current rating and 400 V blocking voltage is required. Consider the KBU package footprint for PCB layout constraints. Evaluate thermal management requirements given the 175°C junction temperature capability. Compare against through-hole alternatives if higher current handling or different mounting styles are needed.

Part Context

The KBU4B belongs to onsemi's family of surface-mount bridge rectifiers. These devices are engineered to replace traditional through-hole bridges in modern electronics manufacturing. The KBU series offers improved automation compatibility and reduced board space consumption compared to legacy packages like KBPC.

Replacement Considerations

Direct substitutes must match the 4 A current rating, 400 V reverse voltage, and KBU package outline. Verify pinout compatibility before substitution. Check thermal resistance values to ensure equivalent heat dissipation performance. Consult the manufacturer's cross-reference guide for approved alternative part numbers.

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.