KBU6A Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The KBU6A is a single-phase bridge rectifier manufactured by GeneSiC Semiconductor, designed for standard rectification applications requiring 50 V peak reverse voltage and 6 A average rectified current. This component features through-hole mounting in a 4-SIP KBU package configuration and operates across an industrial temperature range of -55°C to 150°C.

The KBU6A maintains Active product status with RoHS compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts become necessary when inventory constraints, packaging format requirements, or specific application parameters necessitate alternative component selection while maintaining functional equivalence within defined electrical and mechanical tolerances.

Substiute Parts

KBU6A

GeneSiC SemiconductorIn Stock: 1446KBU6A Datasheet

Current PartRFQ

KBU35005-G

Comchip TechnologyIn Stock: 1160KBU35005-G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the KBU6A is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

• Voltage - Peak Reverse (Max): 50 V (exact match required)
• Diode Type: Single Phase (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: 4-SIP, KBU (exact match required)
• Technology: Standard (exact match required)

Allowable Variation Parameters:

• Current - Average Rectified (Io): Substitute must equal or exceed 6 A
• Voltage - Forward (Vf) (Max) @ If: Substitute must not exceed specified forward voltage at rated current
• Current - Reverse Leakage @ Vr: Substitute must not exceed specified leakage current
• Operating Temperature Range: Substitute must encompass or match -55°C to 150°C range

The KBU35005-G from Comchip Technology qualifies as a substitute based on matching all critical parameters (50 V peak reverse voltage, single-phase configuration, through-hole mounting, 4-SIP KBU package, standard technology). The KBU35005-G exceeds the current rating (35 A versus 6 A), which is permissible in substitution logic as higher current capacity does not compromise lower-current applications.

Parameter Comparison

Engineering Selection Recommendations

KBU6A (GeneSiC Semiconductor):

• Primary selection for new designs and applications requiring Active product status
• RoHS Compliant certification
• Current inventory: 1410 pieces
• Bulk packaging format

KBU35005-G (Comchip Technology):

• Secondary selection when KBU6A availability is constrained
• Product Status: Obsolete (use only when primary part is unavailable)
• ROHS3 Compliant certification (meets current regulatory requirements)
• Tray packaging format
• Current inventory: 1065 pieces
• Higher current rating (35 A) provides design margin for applications operating below rated 6 A specification

Both parts satisfy identical electrical performance requirements at the KBU6A operating point. Selection between these parts should prioritize Active product status (KBU6A) unless inventory or packaging constraints necessitate the Obsolete substitute (KBU35005-G).

Frequently Asked Questions (FAQ)

Q: Can KBU35005-G directly replace KBU6A in existing designs?

A: Yes. Both components share identical peak reverse voltage (50 V), reverse leakage current (10 µA @ 50 V), operating temperature range (-55°C to 150°C), mounting type (through hole), and package configuration (4-SIP KBU). The KBU35005-G current rating (35 A) exceeds the KBU6A requirement (6 A), maintaining functional compatibility.

Q: What is the difference in packaging between these parts?

A: KBU6A is supplied in Bulk packaging, while KBU35005-G is supplied in Tray packaging. Both use identical 4-SIP KBU package / case format with through-hole mounting. Packaging format does not affect electrical or mechanical compatibility.

Q: Why is KBU35005-G listed as Obsolete?

A: Product status reflects manufacturer lifecycle designation. Obsolete status indicates the part is no longer in active production. KBU35005-G remains functionally equivalent and available in current inventory (1065 pieces), but should be considered a secondary selection when KBU6A (Active status) is available.

Q: Are there compliance differences between KBU6A and KBU35005-G?

A: KBU6A carries RoHS Compliant certification. KBU35005-G carries ROHS3 Compliant certification, which represents current regulatory compliance standards. Both parts are MSL 1 (Unlimited moisture sensitivity). Both are EAR99 classified and share identical HTSUS code (8541.10.0080).

Q: Can I use KBU35005-G in a 6 A application?

A: Yes. The KBU35005-G is rated for 35 A average rectified current, which exceeds the 6 A requirement. Operating at 6 A represents 17% of the substitute part's rated capacity, well within safe operating margins.

Q: What determines substitution eligibility for bridge rectifiers in the KBU series?

A: Substitution requires exact matching of peak reverse voltage, diode type (single phase), mounting type (through hole), package configuration (4-SIP KBU), and technology (standard). Current rating, forward voltage, and reverse leakage may vary provided the substitute meets or exceeds performance specifications at the application operating point.