KBPC1508T Single Phase Bridge Rectifier 800V 15A Equivalent & Substitute Parts

Part Overview

The KBPC1508T is a single phase bridge rectifier manufactured by GeneSiC Semiconductor, rated for 800V peak reverse voltage and 15A average rectified current. This component is classified as Active product status and is RoHS Compliant. Bridge rectifiers in this voltage and current class are used in industrial power supply applications, motor control circuits, and AC-to-DC conversion systems. Substitute parts become necessary when the primary component experiences supply constraints, inventory limitations, or when design flexibility permits current rating adjustments within the same voltage class.

Substiute Parts

KBPC1508T

GeneSiC SemiconductorIn Stock: 1160KBPC1508T Datasheet

Current PartRFQ

GBPC5008-G

Comchip TechnologyIn Stock: 782GBPC5008-G Datasheet

SimilarRFQ

KBPC2508-G

Comchip TechnologyIn Stock: 1216KBPC2508-G Datasheet

SimilarRFQ

KBPC3508-G

Comchip TechnologyIn Stock: 1202KBPC3508-G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the KBPC1508T are qualified based on the following criteria:

Mandatory Matching Parameters:

• Voltage - Peak Reverse (Max): 800V
• Diode Type: Single Phase
• Technology: Standard
• Mounting Type: QC Terminal
• Operating Temperature Range: -55°C to 150°C

Variable Parameter (Allows Substitution):

• Current - Average Rectified (Io): The substitute parts are rated at 25A, 35A, and 50A, which exceed the 15A requirement of the main part. Higher current ratings are electrically compatible in applications where the circuit current demand does not exceed the substitute part's rating.

All substitute parts maintain identical voltage specifications, thermal operating range, and mounting configuration. The forward voltage characteristic (Vf) remains constant at 1.1V across all qualified substitutes at their respective rated currents. Reverse leakage current specifications vary slightly among manufacturers but remain within acceptable industrial standards for this component class.

Parameter Comparison

Engineering Selection Recommendations

KBPC2508-G (25A Rating): This substitute provides a 67% increase in current capacity while maintaining all voltage and thermal specifications. Suitable for applications where the KBPC1508T experiences supply constraints and the circuit design permits operation with a higher-rated component. RoHS3 compliance exceeds the RoHS compliance of the main part.

KBPC3508-G (35A Rating): This substitute provides a 133% increase in current capacity. Applicable in designs requiring additional thermal margin or where future current demand expansion is anticipated. Identical voltage and temperature specifications ensure direct functional compatibility. RoHS3 compliance and REACH Unaffected status provide enhanced regulatory documentation.

GBPC5008-G (50A Rating): This substitute provides the highest current capacity at 233% above the main part rating. The GBPC package designation differs from the KBPC package, though both utilize identical 4-Square QC Terminal mounting. This option is suitable for high-current applications or where standardization on a single higher-capacity part across multiple designs is preferred. RoHS3 compliance and REACH Unaffected status apply.

All substitute parts maintain Active product status and are available in current inventory. Selection should be based on circuit current requirements and thermal design considerations, not on performance superiority.

Frequently Asked Questions (FAQ)

Q: Can KBPC2508-G, KBPC3508-G, or GBPC5008-G be used as direct replacements for KBPC1508T?

A: Yes, within the constraints of circuit current demand. All substitute parts share identical peak reverse voltage (800V), operating temperature range (-55°C to 150°C), mounting type (QC Terminal), and forward voltage characteristics (1.1V). The substitute parts are rated for higher average rectified currents (25A, 35A, and 50A respectively) compared to the 15A rating of the KBPC1508T. A higher-rated rectifier can be used in any application where the actual circuit current does not exceed the substitute part's rating.

Q: What is the difference between KBPC and GBPC package designations?

A: Both KBPC and GBPC packages use identical 4-Square QC Terminal mounting configurations. The package designation reflects the manufacturer's internal classification. From an electrical and mechanical standpoint, KBPC and GBPC packages are interchangeable for this product category when mounted on the same terminal configuration.

Q: Are there any thermal or reliability differences between the main part and substitutes?

A: All parts share the same operating temperature range (-55°C to 150°C junction temperature) and identical forward voltage specifications at their respective rated currents. The reverse leakage current of the main part (5µA @ 800V) is lower than the substitutes (10µA @ 800V), but both values are within acceptable industrial standards for standard technology bridge rectifiers. Thermal performance depends on circuit current utilization, not on the part's rated capacity.

Q: What compliance certifications apply to each part?

A: The KBPC1508T is RoHS Compliant. All substitute parts (KBPC2508-G, KBPC3508-G, GBPC5008-G) are ROHS3 Compliant and REACH Unaffected. All parts have Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: Can I use a 50A-rated rectifier in a 15A circuit?

A: Yes. The current rating of a rectifier indicates its maximum safe operating current. Using a higher-rated component in a lower-current application does not create electrical incompatibility. The circuit current determines the actual stress on the component, not the component's rated capacity. This approach is common in engineering practice for standardization and supply chain flexibility.

Q: What inventory status applies to these parts?

A: KBPC1508T: 1122 Pcs in stock. KBPC2508-G: 1155 Pcs in stock. KBPC3508-G: 1167 Pcs in stock. GBPC5008-G: 765 Pcs in stock. All parts are listed as New Original and Active product status.