KBPC1504-G Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The KBPC1504-G is a single-phase bridge rectifier manufactured by Comchip Technology, rated for 400 V peak reverse voltage and 15 A average rectified current. This component is actively produced and suitable for new designs. Bridge rectifiers of this specification are used in AC-to-DC conversion applications requiring moderate current handling at standard industrial voltage levels. Substitute parts may be required due to inventory constraints, supply chain considerations, or application-specific performance requirements within the allowed electrical and mechanical parameter ranges.

Substiute Parts

KBPC1504-G

Comchip TechnologyIn Stock: 899KBPC1504-G Datasheet

Current PartRFQ

GBPC3504-BP

Micro Commercial CoIn Stock: 1432GBPC3504-BP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the KBPC1504-G is determined by the following critical parameters:

• Voltage Rating: Peak reverse voltage must be 400 V or greater to maintain electrical safety margins
• Current Rating: Average rectified current capacity must meet or exceed 15 A for the application
• Mounting Interface: QC Terminal mounting type ensures mechanical and electrical compatibility
• Package Form Factor: 4-Square package geometry must be compatible with PCB layout and thermal management design
• Thermal Performance: Operating temperature range must encompass -55°C ~ 150°C to ensure reliability across specified conditions
• Regulatory Compliance: RoHS3 compliance and MSL rating must be maintained for manufacturing and environmental standards

The GBPC3504-BP qualifies as a substitute based on matching voltage rating (400 V), compatible mounting type (QC Terminal), identical package family (4-Square), overlapping thermal range (-55°C ~ 150°C), and equivalent regulatory compliance (ROHS3, MSL 1). The higher current rating (35 A vs. 15 A) represents a design margin increase rather than a limitation.

Parameter Comparison

Engineering Selection Recommendations

KBPC1504-G is the primary selection for new designs. This part carries Active product status, ensuring long-term availability and manufacturer support. It meets all RoHS3 and REACH compliance requirements with unlimited moisture sensitivity rating.

GBPC3504-BP is available as a substitute where supply constraints necessitate an alternative. This part maintains electrical compatibility across all critical parameters: identical 400 V voltage rating, QC Terminal mounting, 4-Square package family, and -55°C ~ 150°C thermal range. The higher current rating (35 A) provides additional design margin. However, this part is designated Not For New Designs, indicating potential future discontinuation. Use of this substitute should be limited to applications where KBPC1504-G availability is constrained and design cycle time permits component qualification.

Both parts maintain equivalent regulatory compliance (ROHS3, MSL 1, REACH Unaffected, EAR99 ECCN classification).

Frequently Asked Questions (FAQ)

Q: Can GBPC3504-BP directly replace KBPC1504-G in existing designs?

A: Yes, within the constraints of the allowed electrical and mechanical parameters. Both parts share identical voltage rating (400 V), mounting type (QC Terminal), package family (4-Square), and thermal operating range (-55°C ~ 150°C). The GBPC3504-BP has higher current capacity (35 A vs. 15 A), which does not create incompatibility. Physical footprint compatibility depends on specific PCB layout; both use 4-Square package geometry with QC Terminal connections.

Q: What is the significance of the current rating difference?

A: The KBPC1504-G is rated for 15 A average rectified current, while the GBPC3504-BP is rated for 35 A. A substitute with higher current rating does not compromise circuit operation at lower current levels. The higher rating indicates greater thermal capacity and lower forward voltage drop at equivalent current levels, which may improve overall circuit efficiency.

Q: Why is GBPC3504-BP marked "Not For New Designs"?

A: This designation indicates the manufacturer does not recommend this part for new product development. It may signal planned discontinuation or transition to newer technology. For new designs, KBPC1504-G (Active status) is the appropriate selection.

Q: Are there thermal management differences between these parts?

A: Both parts operate across -55°C ~ 150°C. The GBPC3504-BP exhibits lower reverse leakage current (5 µA vs. 10 µA at 400 V), which may result in reduced thermal dissipation under reverse bias conditions. Forward voltage characteristics are equivalent at their respective rated currents.

Q: Do both parts meet the same compliance standards?

A: Yes. Both KBPC1504-G and GBPC3504-BP are ROHS3 compliant, REACH unaffected, carry MSL 1 (Unlimited) moisture sensitivity rating, and are classified as EAR99 for export control purposes.