KBL10 Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The KBL10 is a single-phase bridge rectifier manufactured by onsemi, rated for 1 kV peak reverse voltage and 4 A average rectified current. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The KBL10 features a through-hole 4-SIP package configuration suitable for standard power supply applications requiring full-wave rectification.

Key Parameters

Parameter	Value
Diode Type	Single Phase
Technology	Standard
Voltage - Peak Reverse (Max)	1 kV
Current - Average Rectified (Io)	4 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 4 A
Current - Reverse Leakage @ Vr	5 µA @ 1000 V
Operating Temperature Range	-55°C ~ 150°C (TJ)
Mounting Type	Through Hole
Package / Case	4-SIP, KBL
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the KBL10 is determined by the following critical parameters:

Voltage Rating: Peak reverse voltage must be 1 kV or higher
Current Rating: Average rectified current must meet or exceed 4 A
Diode Type: Single-phase bridge rectifier configuration
Technology: Standard rectifier technology
Mounting Type: Through-hole package
Operating Temperature: -55°C to 150°C range
Package Style: 4-SIP configuration

The substitute parts listed below maintain compatibility with these core electrical and mechanical specifications. Current ratings above 4 A are acceptable as they provide equivalent or superior performance within the same voltage class and package family.

Parameter Comparison

Parameter	KBL10	GBU410-G	GBU610-G	GBU810-G	GBU2510-G
Manufacturer	onsemi	Comchip Technology	Comchip Technology	Comchip Technology	Comchip Technology
Voltage - Peak Reverse (Max)	1 kV	1 kV	1 kV	1 kV	1 kV
Current - Average Rectified (Io)	4 A	4 A	6 A	8 A	25 A
Voltage - Forward (Vf) (Max)	1.1 V @ 4 A	1 V @ 2 A	1 V @ 3 A	1 V @ 4 A	1 V @ 12.5 A
Current - Reverse Leakage @ Vr	5 µA @ 1000 V	10 µA @ 1000 V	10 µA @ 800 V	10 µA @ 1000 V	10 µA @ 1000 V
Operating Temperature	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	4-SIP, KBL	4-SIP, GBU	4-SIP, GBU	4-SIP, GBU	4-SIP, GBU
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

GBU410-G provides the closest electrical match to the KBL10, with identical 1 kV voltage rating and 4 A current rating. This part is manufactured by Comchip Technology and maintains active product status with ROHS3 compliance. The GBU410-G is suitable for direct replacement in applications requiring exact current specifications.

GBU610-G and GBU810-G offer higher current ratings (6 A and 8 A respectively) while maintaining the same 1 kV voltage class and through-hole package configuration. These parts are appropriate for designs where thermal margin or current headroom is beneficial. Both are ROHS3 compliant and actively manufactured.

GBU2510-G provides the highest current capacity at 25 A within the same voltage rating and package family. This part is suitable for applications requiring significant current margin or where future design scaling is anticipated. GBU2510-G is ROHS3 compliant and has the largest inventory availability.

All substitute parts maintain the -55°C to 150°C operating temperature range, through-hole mounting configuration, and MSL 1 moisture sensitivity rating of the original KBL10.

Frequently Asked Questions (FAQ)

Q: Can GBU410-G replace KBL10 in all applications?

A: GBU410-G is electrically equivalent to KBL10, with matching 1 kV voltage and 4 A current ratings. Both use 4-SIP through-hole packages. Physical pin spacing and package dimensions should be verified for mechanical compatibility in the specific PCB layout.

Q: What is the difference between GBU410-G, GBU610-G, and GBU810-G?

A: These parts differ only in current rating: GBU410-G is rated for 4 A, GBU610-G for 6 A, and GBU810-G for 8 A. All maintain 1 kV voltage rating, identical operating temperature range, and the same 4-SIP package configuration. Higher-rated parts provide additional thermal margin in the same package.

Q: Why is GBU2510-G listed as a substitute if it has 25 A rating?

A: GBU2510-G meets all substitution criteria: 1 kV voltage rating, through-hole 4-SIP package, -55°C to 150°C operating range, and single-phase bridge rectifier configuration. The higher 25 A rating does not prevent substitution; it provides additional current capacity. Applications requiring exactly 4 A should use GBU410-G for optimal thermal performance.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. GBU410-G, GBU610-G, GBU810-G, and GBU2510-G are all ROHS3 compliant. The original KBL10 RoHS status was not specified in the available data.

Q: What is the package difference between KBL and GBU designations?

A: Both KBL and GBU are 4-SIP through-hole package styles used for single-phase bridge rectifiers. The designation reflects manufacturer conventions. Physical compatibility should be confirmed for the specific PCB footprint.

Q: Can I use a higher-rated part like GBU810-G in place of KBL10?

A: Yes. GBU810-G meets all electrical and mechanical substitution criteria. The 8 A rating exceeds the 4 A requirement, providing additional design margin. Thermal considerations and PCB layout remain unchanged due to identical package configuration.

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