KBL403G Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The KBL403G is a single-phase bridge rectifier manufactured by GeneSiC Semiconductor, rated for 200 V peak reverse voltage and 4 A average rectified current. This component is classified as obsolete, necessitating identification of equivalent and substitute parts for ongoing design support and procurement continuity. Bridge rectifiers in the KBL package category serve as full-wave rectification solutions in power supply and conversion applications where standardized electrical and mechanical parameters enable direct substitution.

Key Parameters

Parameter	Value	Unit
Diode Type	Single Phase	—
Technology	Standard	—
Voltage - Peak Reverse (Max)	200	V
Current - Average Rectified (Io)	4	A
Voltage - Forward (Vf) (Max) @ If	1.1 @ 4	V @ A
Current - Reverse Leakage @ Vr	5 @ 200	µA @ V
Operating Temperature Range	-50 to 150	°C (TJ)
Mounting Type	Through Hole	—
Package / Case	4-SIP, KBL	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the KBL403G is determined by strict equivalence across the following electrical and mechanical criteria:

Primary Substitution Criteria:

Diode Type: Single Phase
Technology: Standard
Voltage - Peak Reverse (Max): 200 V (minimum requirement)
Current - Average Rectified (Io): 4 A or greater
Mounting Type: Through Hole
Package Category: KBL or compatible 4-SIP form factor

Substitute Classification:

Direct Equivalent: KBL02-E4/51 (Vishay General Semiconductor - Diodes Division) meets all primary criteria with identical electrical specifications and KBL package designation. This part is classified as Active and represents the primary replacement path for the obsolete KBL403G.

Similar Substitute: GBU2502-G (Comchip Technology) satisfies core electrical requirements with 200 V peak reverse voltage and 4.2 A average rectified current, exceeding the 4 A minimum. The GBU package represents a compatible 4-SIP form factor. Operating temperature range extends to -55°C, providing broader thermal coverage. This part is classified as Active and serves as an alternative when KBL02-E4/51 availability is constrained.

Parameter Comparison

Parameter	KBL403G (GeneSiC)	KBL02-E4/51 (Vishay)	GBU2502-G (Comchip)
Manufacturer Part Number	KBL403G	KBL02-E4/51	GBU2502-G
Diode Type	Single Phase	Single Phase	Single Phase
Technology	Standard	Standard	Standard
Voltage - Peak Reverse (Max)	200 V	200 V	200 V
Current - Average Rectified (Io)	4 A	4 A	4.2 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 4 A	1.1 V @ 4 A	1 V @ 12.5 A
Current - Reverse Leakage @ Vr	5 µA @ 200 V	5 µA @ 200 V	10 µA @ 50 V
Operating Temperature Range	-50 to 150°C (TJ)	-50 to 150°C (TJ)	-55 to 150°C (TJ)
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	4-SIP, KBL	4-SIP, KBL	4-SIP, GBU
Product Status	Obsolete	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant
ECCN	EAR99	EAR99	EAR99

Engineering Selection Recommendations

For Direct Replacement (Preferred): Select KBL02-E4/51 when procurement and design validation timelines permit. This part maintains identical electrical specifications and KBL package form factor, eliminating design modification requirements. The part is Active status with ROHS3 compliance and established supply chain availability (2668 pcs in stock).

For Alternative Substitution: Select GBU2502-G when KBL02-E4/51 availability is insufficient or project timelines require immediate sourcing. This part satisfies all core electrical requirements with 4.2 A current rating (exceeding the 4 A specification) and extended lower operating temperature limit (-55°C). The GBU package maintains 4-SIP through-hole form factor compatibility. ROHS3 compliance and Active status confirm regulatory and supply continuity. Physical package dimensions require verification against PCB layout constraints prior to implementation.

Compliance Considerations: Both substitute parts carry EAR99 export classification and ROHS3 compliance status, matching the regulatory framework of the original KBL403G. Moisture sensitivity level (MSL 1 - Unlimited) for GBU2502-G and not applicable designation for KBL02-E4/51 indicate standard handling requirements consistent with through-hole bridge rectifier components.

Frequently Asked Questions (FAQ)

Q: Can KBL02-E4/51 be used as a direct replacement for KBL403G without PCB modification?

A: Yes. KBL02-E4/51 maintains identical electrical specifications (200 V, 4 A, 1.1 V forward voltage, 5 µA leakage) and KBL package form factor. No design changes are required.

Q: What is the primary difference between KBL02-E4/51 and GBU2502-G?

A: KBL02-E4/51 uses the KBL package; GBU2502-G uses the GBU package. Both are 4-SIP through-hole form factors. GBU2502-G provides higher current rating (4.2 A vs. 4 A) and lower minimum operating temperature (-55°C vs. -50°C). Physical package dimensions differ and must be verified against PCB layout.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both KBL02-E4/51 and GBU2502-G carry ROHS3 compliance certification.

Q: What is the inventory status of substitute parts?

A: KBL02-E4/51: 2668 pcs new original in stock. GBU2502-G: 855 pcs new original in stock.

Q: Does GBU2502-G require PCB layout changes?

A: Physical package dimensions between KBL and GBU form factors differ. PCB layout verification is required before implementation to confirm pin spacing and mounting hole compatibility.

Q: Can GBU2502-G be used in applications requiring the exact -50°C to 150°C temperature range?

A: Yes. GBU2502-G operating temperature range (-55°C to 150°C) encompasses the KBL403G specification (-50°C to 150°C), providing equivalent or superior thermal performance.

Q: What export classification applies to these substitute parts?

A: All parts carry EAR99 classification, consistent with standard bridge rectifier diode components.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message