KBPC5008T Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The KBPC5008T is a single-phase bridge rectifier manufactured by GeneSiC Semiconductor, rated for 800 V peak reverse voltage and 50 A average rectified current. This component is classified as Active product status and is RoHS Compliant. Bridge rectifiers of this specification are used in power supply circuits, industrial equipment, and AC-to-DC conversion applications where high voltage and current capacity are required. Substitute parts may be necessary due to inventory availability, lead time constraints, or specific packaging requirements for manufacturing processes.

Key Parameters

Parameter	Value	Unit
Voltage - Peak Reverse (Max)	800	V
Current - Average Rectified (Io)	50	A
Voltage - Forward (Vf) (Max) @ If	1.1 @ 25	V @ A
Current - Reverse Leakage @ Vr	5	µA @ 800 V
Operating Temperature Range	-55 to 150	°C (TJ)
Diode Type	Single Phase	—
Mounting Type	QC Terminal	—
Package / Case	4-Square, KBPC-T	—

Substitute Part Grouping Explanation

Substitute parts for the KBPC5008T are selected based on electrical and mechanical compatibility within the following criteria:

Primary Substitution Criteria:

Voltage - Peak Reverse (Max): 800 V (exact match required)
Diode Type: Single Phase (exact match required)
Mounting Type: QC Terminal (exact match required)
Operating Temperature Range: -55°C to 150°C (exact match required)
Package / Case: 4-Square configuration (exact match required)

Current Rating Considerations: Substitute parts are grouped by average rectified current capacity. The KBPC5008T operates at 50 A. Substitutes with lower current ratings (35 A, 25 A) are listed as alternatives for applications where full 50 A capacity is not required. Substitutes with equal or higher current ratings maintain full electrical compatibility.

Electrical Performance: All substitute parts maintain the same forward voltage specification (1.1 V @ rated current) and operate within the same temperature range. Reverse leakage current specifications vary slightly among manufacturers but remain within acceptable limits for this component category.

Parameter Comparison

Parameter	KBPC5008T (GeneSiC)	GBPC5008-G (Comchip)	KBPC3508-G (Comchip)	KBPC2508-G (Comchip)
Manufacturer	GeneSiC Semiconductor	Comchip Technology	Comchip Technology	Comchip Technology
Voltage - Peak Reverse (Max)	800 V	800 V	800 V	800 V
Current - Average Rectified (Io)	50 A	50 A	35 A	25 A
Voltage - Forward (Vf) (Max)	1.1 V @ 25 A	1.1 V @ 25 A	1.1 V @ 17.5 A	1.1 V @ 12.5 A
Current - Reverse Leakage @ Vr	5 µA @ 800 V	10 µA @ 800 V	10 µA @ 800 V	10 µA @ 800 V
Operating Temperature	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C
Diode Type	Single Phase	Single Phase	Single Phase	Single Phase
Mounting Type	QC Terminal	QC Terminal	QC Terminal	QC Terminal
Package / Case	4-Square, KBPC-T	4-Square, GBPC	4-Square, KBPC	4-Square, KBPC
RoHS Status	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Full Electrical Equivalent (50 A Rating): The GBPC5008-G manufactured by Comchip Technology is a direct electrical equivalent to the KBPC5008T. Both components share identical voltage ratings (800 V), current capacity (50 A), forward voltage characteristics, and operating temperature range. The GBPC5008-G holds ROHS3 Compliant status and maintains MSL 1 classification. The primary difference is packaging format (Tray versus Bulk) and manufacturer designation. This substitute is suitable for direct replacement in applications requiring full 50 A capacity.

Reduced Current Alternatives: The KBPC3508-G (35 A) and KBPC2508-G (25 A) are electrical substitutes for applications where the full 50 A capacity of the KBPC5008T is not required. Both maintain the 800 V voltage rating, QC Terminal mounting, and -55°C to 150°C operating range. These lower-rated alternatives are suitable only for circuits designed to operate at their respective current levels. Both hold ROHS3 Compliant status and REACH Unaffected designation.

Compliance Considerations: All substitute parts maintain RoHS compliance (ROHS3 standard for Comchip parts versus RoHS Compliant for GeneSiC). All components carry MSL 1 classification, indicating unlimited moisture sensitivity protection. ECCN and HTSUS classifications remain consistent across all listed parts.

Frequently Asked Questions (FAQ)

Q: Can the GBPC5008-G replace the KBPC5008T in all applications? A: Yes. The GBPC5008-G is electrically equivalent with identical voltage (800 V), current (50 A), forward voltage (1.1 V @ 25 A), and operating temperature (-55°C to 150°C) specifications. Both use QC Terminal mounting and 4-Square packaging. The primary difference is packaging format (Tray versus Bulk) and manufacturer. Verify PCB layout compatibility with the specific package variant.

Q: What is the difference between KBPC5008T and KBPC3508-G? A: The KBPC3508-G has a reduced average rectified current rating of 35 A compared to the KBPC5008T's 50 A. Both maintain 800 V voltage rating and identical operating temperature range. The KBPC3508-G is suitable only for applications designed for 35 A operation. Forward voltage is specified at the reduced current level (1.1 V @ 17.5 A versus 1.1 V @ 25 A).

Q: Are the KBPC2508-G and KBPC3508-G suitable substitutes for the KBPC5008T? A: These parts are electrical substitutes only for applications requiring their respective lower current ratings (25 A and 35 A). They are not suitable for circuits designed to operate at the full 50 A capacity of the KBPC5008T. All three maintain identical 800 V voltage rating and QC Terminal mounting.

Q: What packaging differences exist among these bridge rectifiers? A: The KBPC5008T is supplied in Bulk packaging. The GBPC5008-G is supplied in Tray packaging. The KBPC3508-G is supplied in Tray packaging. The KBPC2508-G is supplied in Bulk packaging. Packaging format affects handling, storage, and assembly processes but does not alter electrical performance.

Q: Do all substitute parts meet RoHS requirements? A: Yes. The KBPC5008T is RoHS Compliant. All substitute parts (GBPC5008-G, KBPC3508-G, KBPC2508-G) are ROHS3 Compliant. All components carry MSL 1 classification. Comchip Technology parts include REACH Unaffected designation.

Q: What is the significance of the reverse leakage current difference? A: The KBPC5008T specifies 5 µA @ 800 V reverse leakage, while substitute parts specify 10 µA @ 800 V. Both values are within acceptable limits for single-phase bridge rectifier applications. The difference reflects manufacturer-specific design and testing parameters and does not affect functional compatibility in standard power supply circuits.

Q: Can these parts be used interchangeably in high-temperature applications? A: Yes. All listed parts maintain the same operating temperature range of -55°C to 150°C (TJ). Temperature performance is equivalent across all substitutes. Thermal management design should account for the specific current rating of the selected part.

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