KBU10005 Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The KBU10005 is a single-phase bridge rectifier manufactured by GeneSiC Semiconductor, rated for 50 V peak reverse voltage and 10 A average rectified current. This component is designed for Through Hole mounting in the standard KBU package configuration and operates across the temperature range of -55°C to 150°C (TJ). The part maintains Active product status and is RoHS Compliant with MSL 1 (Unlimited moisture sensitivity level).

Substitute parts are identified when equivalent electrical and mechanical parameters align with the main part specifications, enabling direct functional replacement in circuit applications where the specified ratings are met.

Key Parameters

Parameter	Value
Voltage - Peak Reverse (Max)	50 V
Current - Average Rectified (Io)	10 A
Voltage - Forward (Vf) (Max) @ If	1.05 V @ 10 A
Current - Reverse Leakage @ Vr	10 µA @ 50 V
Operating Temperature Range	-55°C ~ 150°C (TJ)
Mounting Type	Through Hole
Package / Case	4-SIP, KBU
Diode Type	Single Phase
Technology	Standard

Substitute Part Grouping Explanation

Substitution eligibility for the KBU10005 is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

Voltage - Peak Reverse (Max): 50 V
Diode Type: Single Phase
Technology: Standard
Mounting Type: Through Hole
Package / Case: 4-SIP, KBU
Operating Temperature Range: -55°C ~ 150°C (TJ)

Current Rating Consideration: The KBU10005 specifies 10 A average rectified current. Substitute parts with equal or higher current ratings (Io ≥ 10 A) satisfy the electrical requirements for this application, as higher-rated components operate within the specified voltage and temperature parameters.

Electrical Performance: Forward voltage (Vf) and reverse leakage current must remain within acceptable operational limits for the intended circuit. Parts meeting the 50 V peak reverse voltage specification and single-phase bridge rectifier topology are electrically compatible.

The KBU35005-G from Comchip Technology meets all mandatory parameters with a higher current rating of 35 A, making it functionally equivalent for applications requiring the KBU10005.

Parameter Comparison

Parameter	KBU10005 (GeneSiC)	KBU35005-G (Comchip)
Voltage - Peak Reverse (Max)	50 V	50 V
Current - Average Rectified (Io)	10 A	35 A
Voltage - Forward (Vf) (Max) @ If	1.05 V @ 10 A	1.1 V @ 17.5 A
Current - Reverse Leakage @ Vr	10 µA @ 50 V	10 µA @ 50 V
Operating Temperature Range	-55°C ~ 150°C (TJ)	-55°C ~ 150°C (TJ)
Mounting Type	Through Hole	Through Hole
Package / Case	4-SIP, KBU	4-SIP, KBU
Diode Type	Single Phase	Single Phase
Technology	Standard	Standard
RoHS Status	RoHS Compliant	ROHS3 Compliant
Product Status	Active	Obsolete

Engineering Selection Recommendations

KBU10005 (GeneSiC Semiconductor): The primary part maintains Active product status with RoHS Compliance certification. This part is suitable for new designs and applications requiring ongoing component availability. The 10 A current rating directly matches the specified application requirement.

KBU35005-G (Comchip Technology): This substitute part carries Obsolete product status, indicating discontinued manufacturing and limited future availability. While electrically equivalent with matching voltage, temperature range, and package specifications, the higher 35 A current rating provides operational margin. The part is ROHS3 Compliant and REACH Unaffected. Selection of this substitute should account for the obsolete status and potential supply constraints.

Compliance Considerations: Both parts meet environmental and regulatory requirements appropriate for their respective manufacturing periods. The KBU10005 is recommended for applications prioritizing long-term component availability and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can KBU35005-G directly replace KBU10005 in existing circuits?

A: Yes. Both parts share identical voltage ratings (50 V peak reverse), operating temperature range (-55°C to 150°C), mounting type (Through Hole), and package configuration (4-SIP, KBU). The KBU35005-G has a higher current rating (35 A vs. 10 A), which does not prevent substitution in applications designed for 10 A operation.

Q: What is the significance of the different current ratings?

A: The KBU10005 is rated for 10 A average rectified current, while the KBU35005-G is rated for 35 A. A substitute part with higher current capacity operates safely within the electrical constraints of the original design. The higher rating indicates greater thermal and electrical margin but does not affect compatibility.

Q: Are there packaging differences between these parts?

A: Both parts use the 4-SIP, KBU package configuration for Through Hole mounting. Physical dimensions and pin configurations are identical, enabling direct PCB-level substitution without layout modifications.

Q: What does Obsolete product status mean for KBU35005-G?

A: Obsolete status indicates the manufacturer has discontinued production. While existing inventory may be available, future procurement cannot be guaranteed. For new designs or long-term applications, the Active-status KBU10005 is the preferred selection.

Q: How do the forward voltage specifications compare?

A: KBU10005 specifies 1.05 V maximum forward voltage at 10 A, while KBU35005-G specifies 1.1 V maximum at 17.5 A. Both values are within acceptable ranges for standard bridge rectifier applications. The slight difference reflects different measurement conditions and does not affect functional compatibility.

Q: Are both parts RoHS compliant?

A: Yes. KBU10005 is RoHS Compliant, and KBU35005-G is ROHS3 Compliant. Both meet environmental compliance requirements for their respective manufacturing standards.

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