KBPC1004-G Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The KBPC1004-G is a single-phase bridge rectifier manufactured by Comchip Technology, rated for 400 V peak reverse voltage and 10 A average rectified current. This component is actively produced and suitable for new designs. Bridge rectifiers in this category are essential for AC-to-DC conversion applications requiring standardized electrical and mechanical interfaces. Substitute parts may be necessary due to inventory constraints, supply chain considerations, or application-specific requirements within the allowed parameter ranges.

Key Parameters

Parameter	Value
Voltage - Peak Reverse (Max)	400 V
Current - Average Rectified (Io)	10 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 5 A
Current - Reverse Leakage @ Vr	10 µA @ 400 V
Operating Temperature Range	-55°C ~ 150°C (TJ)
Mounting Type	QC Terminal
Package / Case	4-Square, KBPC
Diode Type	Single Phase
Technology	Standard
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the KBPC1004-G is determined by the following critical parameters:

Voltage - Peak Reverse (Max): Must equal or exceed 400 V
Diode Type: Must be Single Phase
Technology: Must be Standard
Mounting Type: Must be QC Terminal
Package / Case: Must be 4-Square configuration
Operating Temperature Range: Must encompass -55°C ~ 150°C
RoHS Status: Must maintain ROHS3 Compliance

The Current - Average Rectified (Io) parameter may vary within the substitute part, provided the part meets or exceeds the minimum 10 A requirement and maintains electrical compatibility across all other specified parameters.

Parameter Comparison

Parameter	KBPC1004-G (Main Part)	GBPC3504-BP (Substitute)	Compatibility
Manufacturer	Comchip Technology	Micro Commercial Co	Different manufacturer
Voltage - Peak Reverse (Max)	400 V	400 V	Match
Current - Average Rectified (Io)	10 A	35 A	Substitute exceeds requirement
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 5 A	1.1 V @ 17.5 A	Compatible forward voltage characteristic
Current - Reverse Leakage @ Vr	10 µA @ 400 V	5 µA @ 400 V	Substitute has lower leakage
Operating Temperature Range	-55°C ~ 150°C	-55°C ~ 150°C	Match
Mounting Type	QC Terminal	QC Terminal	Match
Package / Case	4-Square, KBPC	4-Square, GBPC	Same form factor, different series designation
Diode Type	Single Phase	Single Phase	Match
Technology	Standard	Standard	Match
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Match
Product Status	Active	Not For New Designs	Main part preferred for new designs

Engineering Selection Recommendations

The GBPC3504-BP qualifies as a functional substitute for the KBPC1004-G based on electrical parameter alignment and mechanical compatibility. Both parts maintain identical peak reverse voltage (400 V), operating temperature range (-55°C ~ 150°C), and mounting configuration (QC Terminal, 4-Square package). The GBPC3504-BP provides higher current capacity (35 A versus 10 A) and lower reverse leakage current (5 µA versus 10 µA), making it electrically compatible for applications designed around the KBPC1004-G specifications.

However, the KBPC1004-G maintains Active product status, while the GBPC3504-BP is designated Not For New Designs. For new product development, the KBPC1004-G is the preferred selection. The GBPC3504-BP is suitable for legacy system maintenance, repair applications, or situations where the KBPC1004-G is unavailable and the higher current rating does not create design constraints.

Both parts maintain ROHS3 compliance and identical regulatory status (REACH Unaffected, ECCN EAR99).

Frequently Asked Questions (FAQ)

Q: Can the GBPC3504-BP directly replace the KBPC1004-G in existing applications?

A: Yes, within the electrical and mechanical parameters specified. The GBPC3504-BP meets or exceeds all critical substitution criteria: identical peak reverse voltage (400 V), matching operating temperature range (-55°C ~ 150°C), compatible QC Terminal mounting, and 4-Square package form factor. The higher current rating (35 A) does not create incompatibility for applications rated at 10 A.

Q: What is the significance of the different package series designations (KBPC versus GBPC)?

A: Both designations refer to 4-Square bridge rectifier packages with QC Terminal mounting. The series letter indicates the manufacturer's product line classification. Despite different series names, both packages are mechanically and electrically compatible for this application category.

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

A: This designation indicates the manufacturer has transitioned this part to legacy or end-of-life status. For new product development, the KBPC1004-G (Active status) is the recommended selection. The GBPC3504-BP remains available for repair and maintenance of existing systems.

Q: Does the higher current rating of the GBPC3504-BP (35 A) affect compatibility?

A: No. Higher current capacity does not create incompatibility. The substitute part can safely operate in applications designed for lower current requirements. The 10 A application will draw only the required current, with the additional capacity remaining unused.

Q: Are there any compliance or certification differences between these parts?

A: Both parts maintain identical compliance status: ROHS3 Compliant, REACH Unaffected, and ECCN EAR99 classification. No compliance barriers exist for substitution.

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