KBP151G C2G Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The KBP151G C2G is a single-phase bridge rectifier manufactured by Taiwan Semiconductor Corporation, designed for 50 V peak reverse voltage applications with 1.5 A average rectified current capacity. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity. Bridge rectifiers in this specification class are used in AC-to-DC conversion circuits requiring moderate current handling and voltage regulation in industrial and consumer applications.

Key Parameters

Parameter	Value
Diode Type	Single Phase
Technology	Standard
Voltage - Peak Reverse (Max)	50 V
Current - Average Rectified (Io)	1.5 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 1.5 A
Operating Temperature Range	-55°C ~ 150°C (TJ)
Mounting Type	Through Hole
Package / Case	4-SIP, KBP
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the KBP151G C2G is determined by strict equivalence across the following critical parameters:

Mandatory Matching Criteria:

Diode Type: Single Phase
Technology: Standard
Voltage - Peak Reverse (Max): 50 V
Current - Average Rectified (Io): 1.5 A
Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 1.5 A
Mounting Type: Through Hole
Package / Case: 4-SIP, KBP

The KBP005G manufactured by Diodes Incorporated meets all mandatory electrical and mechanical parameters required for direct substitution. Both components share identical voltage and current ratings, forward voltage characteristics, and physical packaging specifications. The substitute part maintains compliance with RoHS3 and REACH requirements, ensuring regulatory equivalence.

Parameter Comparison

Parameter	KBP151G C2G (Main)	KBP005G (Substitute)	Match Status
Manufacturer	Taiwan Semiconductor Corporation	Diodes Incorporated	Different Manufacturer
Product Status	Obsolete	Active	Substitute is Active
Diode Type	Single Phase	Single Phase	Equivalent
Technology	Standard	Standard	Equivalent
Voltage - Peak Reverse (Max)	50 V	50 V	Equivalent
Current - Average Rectified (Io)	1.5 A	1.5 A	Equivalent
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 1.5 A	1.1 V @ 1.5 A	Equivalent
Current - Reverse Leakage @ Vr	10 µA @ 50 V	5 µA @ 50 V	Substitute Superior
Operating Temperature Range	-55°C ~ 150°C (TJ)	-65°C ~ 150°C (TJ)	Substitute Extended
Mounting Type	Through Hole	Through Hole	Equivalent
Package / Case	4-SIP, KBP	4-SIP, KBP	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Equivalent
REACH Status	REACH Unaffected	REACH Unaffected	Equivalent

Engineering Selection Recommendations

The KBP005G is the direct functional equivalent for the obsolete KBP151G C2G. Selection of this substitute is supported by the following factors:

Electrical Equivalence: Both components operate at identical voltage and current specifications with matching forward voltage characteristics, ensuring circuit performance parity in rectification applications.

Regulatory Compliance: The KBP005G maintains ROHS3 and REACH compliance status, meeting the same environmental and hazardous substance restrictions as the original component.

Product Availability: The KBP005G is classified as Active, providing assured long-term procurement availability and supply chain continuity compared to the obsolete status of the KBP151G C2G.

Physical Compatibility: Identical 4-SIP KBP package and through-hole mounting specifications enable direct board-level substitution without PCB redesign or mechanical modification.

Enhanced Performance Characteristics: The KBP005G demonstrates lower reverse leakage current (5 µA versus 10 µA) and an extended lower operating temperature limit (-65°C versus -55°C), providing operational margin in demanding thermal environments.

Frequently Asked Questions (FAQ)

Q: Can the KBP005G be used as a direct replacement for the KBP151G C2G without circuit modification?

A: Yes. The KBP005G meets all mandatory electrical parameters including voltage rating, current capacity, and forward voltage characteristics. Physical packaging is identical, enabling direct substitution on existing PCBs without design changes.

Q: What is the significance of the different reverse leakage current values?

A: The KBP005G exhibits 5 µA reverse leakage at 50 V compared to 10 µA for the KBP151G C2G. Lower leakage current reduces standby power dissipation and improves circuit efficiency, representing a performance advantage in the substitute component.

Q: Are there temperature range differences between these components?

A: The KBP005G operates from -65°C to 150°C, extending the lower temperature limit by 10°C compared to the KBP151G C2G range of -55°C to 150°C. Both components share the same upper temperature limit. This extended range provides operational margin in cold environment applications.

Q: Does the packaging format differ between the main part and substitute?

A: No. Both the KBP151G C2G and KBP005G use identical 4-SIP KBP through-hole packaging. Pin configuration and physical dimensions are equivalent, ensuring mechanical compatibility.

Q: What compliance certifications apply to the KBP005G?

A: The KBP005G is ROHS3 compliant and REACH unaffected, matching the regulatory status of the KBP151G C2G. Both components meet current environmental and hazardous substance restrictions for industrial and consumer applications.

Q: Why is the KBP151G C2G classified as obsolete?

A: Obsolete status indicates the component is no longer manufactured or supported by Taiwan Semiconductor Corporation. The KBP005G provides functional continuity for designs requiring single-phase 50 V 1.5 A bridge rectifier functionality.

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