KBL404G Bridge Rectifier Single Phase 400V 4A Equivalent & Substitute Parts

Part Overview

The KBL404G is a single-phase bridge rectifier manufactured by GeneSiC Semiconductor, rated for 400V peak reverse voltage and 4A average rectified current. This component is classified as Active product status and is RoHS Compliant. Bridge rectifiers of this specification are essential in AC-to-DC conversion applications requiring moderate current handling at standard industrial voltage levels. Substitute parts may be required due to inventory constraints, supply chain disruptions, or application-specific packaging preferences while maintaining electrical and mechanical compatibility.

Substiute Parts

KBL404G

GeneSiC SemiconductorIn Stock: 852KBL404G Datasheet

Current PartRFQ

GBU2504-G

Comchip TechnologyIn Stock: 942GBU2504-G Datasheet

SimilarRFQ

KBL04-E4/51

Vishay General Semiconductor - Diodes DivisionIn Stock: 1469KBL04-E4/51 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the KBL404G bridge rectifier are classified based on strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Voltage - Peak Reverse (Max): 400V
• Current - Average Rectified (Io): 4A
• Voltage - Forward (Vf) (Max) @ If: 1.1V @ 4A
• Current - Reverse Leakage @ Vr: 5µA @ 400V
• Operating Temperature Range: -50°C to 150°C (TJ)
• Mounting Type: Through Hole
• Package / Case: 4-SIP, KBL
• Diode Type: Single Phase
• Technology: Standard

Parametric Equivalent Classification: The KBL04-E4/51 manufactured by Vishay General Semiconductor - Diodes Division meets all electrical specifications identically to the KBL404G. This part maintains the same voltage rating, current rating, forward voltage characteristics, reverse leakage specifications, operating temperature range, and package configuration. The KBL04-E4/51 is classified as a parametric equivalent due to complete electrical and mechanical compatibility.

Functional Substitute Classification: The GBU2504-G manufactured by Comchip Technology operates at the same 400V peak reverse voltage and maintains compatible through-hole mounting in a 4-SIP package configuration. However, this part is rated for 25A average rectified current, which exceeds the 4A specification of the KBL404G. The GBU2504-G is classified as a functional substitute suitable for applications where higher current capacity is acceptable or required, though it is not a direct parametric equivalent.

Parameter Comparison

Engineering Selection Recommendations

KBL04-E4/51 (Vishay General Semiconductor - Diodes Division): The KBL04-E4/51 is the primary parametric equivalent for the KBL404G. This part maintains identical electrical specifications across all measured parameters and is certified ROHS3 Compliant with REACH Unaffected status. Selection of the KBL04-E4/51 is appropriate for direct replacement applications requiring no circuit redesign or thermal analysis modifications. Inventory availability of 1395 pieces supports production requirements.

GBU2504-G (Comchip Technology): The GBU2504-G is a functional substitute suitable for applications where current capacity exceeding 4A is acceptable or where design margins require higher current rating. This part maintains the 400V voltage specification and through-hole mounting configuration. The GBU2504-G is certified ROHS3 Compliant and REACH Unaffected. Selection of this part requires verification that the higher current rating does not introduce thermal or reliability concerns in the target application. Inventory availability of 864 pieces supports production requirements.

Frequently Asked Questions (FAQ)

Q: Can the KBL04-E4/51 be used as a direct replacement for the KBL404G? A: Yes. The KBL04-E4/51 is a parametric equivalent with identical voltage rating (400V), current rating (4A), forward voltage (1.1V @ 4A), reverse leakage (5µA @ 400V), operating temperature range (-50 to 150°C), and package configuration (4-SIP, KBL). No circuit modifications are required.

Q: What is the primary difference between the KBL404G and GBU2504-G? A: The GBU2504-G is rated for 25A average rectified current compared to the KBL404G's 4A rating. Both maintain 400V peak reverse voltage and through-hole mounting. The GBU2504-G package designation is GBU rather than KBL, though both use 4-SIP configuration.

Q: Can the GBU2504-G be used in place of the KBL404G in all applications? A: The GBU2504-G maintains voltage and mounting compatibility but operates at higher current capacity. Use is appropriate where the application can accommodate the higher current rating. Physical package differences (GBU vs. KBL) may require PCB layout verification.

Q: Are all three parts RoHS compliant? A: Yes. The KBL404G is RoHS Compliant. The KBL04-E4/51 and GBU2504-G are both ROHS3 Compliant, representing a higher compliance standard.

Q: What is the moisture sensitivity level for these parts? A: The KBL404G and GBU2504-G are both classified as MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. The KBL04-E4/51 is classified as Not Applicable for MSL.

Q: Do these parts have identical forward voltage characteristics? A: The KBL404G and KBL04-E4/51 both specify 1.1V forward voltage at 4A. The GBU2504-G specifies 1.0V forward voltage at 12.5A, reflecting its higher current rating.

Q: Are there any REACH or ECCN restrictions on these parts? A: All three parts are classified as ECCN EAR99. The KBL04-E4/51 and GBU2504-G are REACH Unaffected. The KBL404G REACH status is not specified in the provided data.