KBU1008 Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The KBU1008 is a single-phase bridge rectifier manufactured by GeneSiC Semiconductor, designed for 800 V peak reverse voltage applications with 10 A average rectified current capacity. This component operates across a temperature range of -55°C to 150°C and is housed in a 4-SIP KBU through-hole package. The part maintains Active product status and carries RoHS Compliance certification.

Identifying equivalent and substitute parts becomes necessary when managing supply chain continuity, optimizing inventory allocation, or addressing component availability constraints while maintaining electrical and mechanical compatibility within system designs.

Substiute Parts

KBU1008

GeneSiC SemiconductorIn Stock: 980KBU1008 Datasheet

Current PartRFQ

KBU1008-G

Comchip TechnologyIn Stock: 1194KBU1008-G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the KBU1008 are identified based on strict electrical and mechanical parameter matching. The substitution logic requires:

Critical Matching Parameters:

• Voltage - Peak Reverse (Max): 800 V minimum
• Current - Average Rectified (Io): 10 A minimum
• Diode Type: Single Phase
• Mounting Type: Through Hole
• Package / Case: 4-SIP, KBU configuration

Secondary Compatibility Parameters:

• Technology: Standard rectifier construction
• RoHS Compliance: Active product status with current regulatory certification

The KBU1008-G from Comchip Technology qualifies as a substitute part because it maintains identical voltage rating (800 V), current rating (10 A), single-phase topology, through-hole mounting, and KBU package configuration. Both parts operate within overlapping temperature ranges and maintain RoHS compliance status.

Parameter Comparison

Engineering Selection Recommendations

KBU1008 (GeneSiC Semiconductor): Select this part when the application requires the extended upper operating temperature limit of 150°C. GeneSiC maintains Active product status with RoHS Compliance certification and demonstrates current inventory availability of 917 pieces.

KBU1008-G (Comchip Technology): Select this part as a substitute when supply constraints affect KBU1008 availability or when the application operating temperature does not exceed 125°C. Comchip Technology maintains Active product status with ROHS3 Compliance certification and demonstrates higher inventory availability of 1158 pieces. Both parts share identical voltage, current, mounting, and package specifications.

Both parts maintain compliance with regulatory requirements (RoHS/ROHS3) and identical moisture sensitivity classification. Selection between these parts depends on thermal operating envelope requirements and supply chain considerations rather than electrical performance differences.

Frequently Asked Questions (FAQ)

Q: Can KBU1008-G replace KBU1008 in all applications?

A: KBU1008-G functions as a substitute in applications where the maximum operating temperature does not exceed 125°C. The KBU1008 supports operation to 150°C. Both parts maintain identical voltage (800 V), current (10 A), and package specifications (4-SIP KBU through-hole).

Q: What are the critical parameters that determine substitution compatibility?

A: Voltage - Peak Reverse (800 V), Current - Average Rectified (10 A), Diode Type (Single Phase), Mounting Type (Through Hole), and Package configuration (4-SIP, KBU) must remain identical. These parameters define the electrical and mechanical interface requirements.

Q: Are there differences in forward voltage characteristics between these parts?

A: Forward voltage specifications are provided at different test conditions. KBU1008 specifies 1.05 V maximum at 10 A, while KBU1008-G specifies 1 V maximum at 5 A. These represent manufacturer-specific test methodologies rather than functional incompatibility.

Q: Do both parts meet current regulatory compliance requirements?

A: Yes. KBU1008 carries RoHS Compliance certification, and KBU1008-G carries ROHS3 Compliance certification. Both maintain Moisture Sensitivity Level 1 (Unlimited) classification and EAR99 export control status.

Q: What is the significance of the different reverse leakage test conditions?

A: Reverse leakage is specified at 10 µA for both parts but measured at different voltage levels (KBU1008 at 800 V, KBU1008-G at 600 V). Both measurements confirm acceptable leakage performance within their respective voltage test conditions.

Q: Can these parts be used interchangeably on the same PCB assembly?

A: Yes. Both parts use identical 4-SIP KBU through-hole package configuration and mounting type, ensuring mechanical and electrical pin compatibility on PCB designs.