KBL406G Bridge Rectifier Single Phase 600V 4A Equivalent & Substitute Parts

Part Overview

The KBL406G is a single-phase bridge rectifier manufactured by GeneSiC Semiconductor, rated for 600V peak reverse voltage and 4A average rectified current. This component is designed for through-hole mounting applications requiring standard rectification technology. The part maintains active product status with 2416 units in current inventory stock.

Substitute parts become necessary when the primary component experiences supply constraints, extended lead times, or when design flexibility permits selection from alternative manufacturers offering equivalent electrical and mechanical specifications. The KBL406G has two identified substitute options that maintain compatibility within the specified parameter ranges.

Substiute Parts

KBL406G

GeneSiC SemiconductorIn Stock: 2434KBL406G Datasheet

Current PartRFQ

GBU2506-G

Comchip TechnologyIn Stock: 2212GBU2506-G Datasheet

SimilarRFQ

KBL06-E4/51

Vishay General Semiconductor - Diodes DivisionIn Stock: 1966KBL06-E4/51 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the KBL406G is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

• Voltage - Peak Reverse (Max): 600V minimum
• Current - Average Rectified (Io): 4A or greater
• Diode Type: Single Phase
• Technology: Standard
• Mounting Type: Through Hole
• Package Category: 4-SIP configuration

Acceptable Variation Parameters:

• Voltage - Forward (Vf): Equal to or lower than specified maximum
• Current - Reverse Leakage: Equal to or lower than specified maximum
• Operating Temperature Range: Must encompass or exceed the original range
• RoHS/REACH Compliance: Compliance status does not restrict substitution

The two identified substitutes meet these criteria through equivalent or superior electrical performance within the defined parameter space.

Parameter Comparison

Engineering Selection Recommendations

KBL06-E4/51 (Vishay General Semiconductor - Diodes Division)

This substitute provides parametric equivalence to the KBL406G with identical electrical specifications across all critical parameters: 600V peak reverse voltage, 4A average rectified current, 1.1V forward voltage at 4A, and 5µA reverse leakage at 600V. Operating temperature range matches exactly at -50°C to 150°C. The KBL package configuration ensures mechanical compatibility with through-hole PCB layouts designed for the KBL406G. ROHS3 compliance status and REACH unaffected designation confirm regulatory alignment. Current inventory of 1900 units supports production requirements.

GBU2506-G (Comchip Technology)

This substitute exceeds the KBL406G specifications in current capacity (4.2A versus 4A) and operating temperature range (-55°C to 150°C versus -50°C to 150°C). Forward voltage performance is superior at 1V measured at 12.5A. Reverse leakage is 10µA at 600V, which remains within acceptable limits for standard rectifier applications. The GBU package configuration differs from the KBL package, requiring verification of PCB footprint compatibility before selection. ROHS3 compliance and REACH unaffected status confirm regulatory requirements. Inventory of 2200 units is available.

Both substitutes maintain active product status and are suitable for direct component selection based on supply availability and package compatibility requirements.

Frequently Asked Questions (FAQ)

Q: Can the KBL06-E4/51 be used as a direct replacement for the KBL406G?

A: Yes. The KBL06-E4/51 provides parametric equivalence across all electrical specifications and uses the identical KBL package configuration. Through-hole mounting compatibility is maintained. No circuit modifications are required.

Q: What is the primary difference between the GBU2506-G and the KBL406G?

A: The GBU2506-G provides higher current capacity (4.2A versus 4A) and an extended lower operating temperature limit (-55°C versus -50°C). The package configuration differs (GBU versus KBL), which may affect PCB footprint compatibility. Forward voltage performance is superior.

Q: Does package difference between KBL and GBU affect substitution?

A: Package differences require PCB footprint verification. While both are 4-SIP through-hole configurations, the physical dimensions and pin spacing may differ. Confirm PCB layout compatibility before selecting the GBU2506-G as a substitute.

Q: Are all three parts RoHS compliant?

A: Yes. The KBL406G is RoHS Compliant. Both substitutes (KBL06-E4/51 and GBU2506-G) are ROHS3 Compliant, which represents an updated compliance standard.

Q: What is the significance of reverse leakage current differences?

A: The KBL406G and KBL06-E4/51 both specify 5µA reverse leakage at 600V. The GBU2506-G specifies 10µA at 600V. Both values are acceptable for standard rectifier applications. Higher leakage may result in marginally increased power dissipation in high-impedance circuits.

Q: Can forward voltage differences affect circuit performance?

A: The KBL406G and KBL06-E4/51 specify identical forward voltage (1.1V @ 4A). The GBU2506-G specifies 1V @ 12.5A, indicating superior forward voltage performance. Lower forward voltage reduces power dissipation and heat generation in the rectifier stage.

Q: What inventory status should influence part selection?

A: Current inventory levels are: KBL406G (2416 units), GBU2506-G (2200 units), and KBL06-E4/51 (1900 units). All three parts maintain adequate stock for production requirements. Selection should prioritize package compatibility and electrical specification alignment rather than inventory quantity.