KBJ4005G Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The KBJ4005G is a single-phase bridge rectifier diode designed for standard rectification applications. This component features a 50 V peak reverse voltage rating and 4 A average rectified current capacity, housed in a 4-SIP KBJ through-hole package. The part is classified as Active product status and is RoHS compliant, making it suitable for modern electronic assembly requirements. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain considerations, or specific manufacturing certifications.

Substiute Parts

KBJ4005G

GeneSiC SemiconductorIn Stock: 2676KBJ4005G Datasheet

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KBJ4005G

Diodes IncorporatedIn Stock: 2689KBJ4005G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the KBJ4005G are identified based on strict electrical and mechanical parameter matching. The substitution criteria are:

Primary Matching Parameters:

• Diode Type: Single Phase
• Technology: Standard
• Voltage - Peak Reverse (Max): 50 V
• Current - Average Rectified (Io): 4 A
• Mounting Type: Through Hole
• Package / Case: 4-SIP, KBJ

Secondary Compatibility Parameters:

• Voltage - Forward (Vf) (Max) @ If: Equal or lower forward voltage drop
• Current - Reverse Leakage @ Vr: Equal or lower reverse leakage
• Operating Temperature Range: Equal or wider temperature range
• RoHS Status: Compliant or higher compliance level
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

The KBJ4005G manufactured by Diodes Incorporated meets all primary matching parameters and demonstrates equivalent or superior performance in secondary parameters, qualifying it as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: GeneSiC Semiconductor KBJ4005G

The GeneSiC KBJ4005G is the original specified component with Active product status and RoHS compliance. This part is recommended for applications where the original manufacturer specification must be maintained.

Substitute Selection: Diodes Incorporated KBJ4005G

The Diodes Incorporated KBJ4005G qualifies as a direct electrical and mechanical substitute. This part demonstrates:

• Identical peak reverse voltage (50 V) and average rectified current (4 A) ratings
• Equivalent reverse leakage current (5 µA @ 50 V)
• Extended operating temperature range (-65°C to 150°C versus -55°C to 150°C)
• Higher RoHS compliance level (ROHS3 versus RoHS Compliant)
• Identical through-hole 4-SIP KBJ package configuration
• MSL rating of 1 (Unlimited), matching the original part

The Diodes Incorporated variant is suitable for direct substitution in applications where component availability or supply chain requirements necessitate an alternative source. The lower forward voltage specification (1 V @ 2 A) indicates improved efficiency characteristics compared to the original part specification (1.1 V @ 4 A).

Frequently Asked Questions (FAQ)

Q: Can the Diodes Incorporated KBJ4005G replace the GeneSiC KBJ4005G in existing designs?

A: Yes. Both parts share identical electrical ratings for peak reverse voltage (50 V) and average rectified current (4 A), equivalent reverse leakage characteristics (5 µA @ 50 V), and identical through-hole 4-SIP KBJ package dimensions. The Diodes Incorporated variant provides an extended operating temperature range and higher RoHS compliance level.

Q: What are the key parameters that determine substitution compatibility?

A: Substitution compatibility is determined by: (1) Diode Type (Single Phase), (2) Voltage - Peak Reverse (Max) (50 V), (3) Current - Average Rectified (Io) (4 A), (4) Mounting Type (Through Hole), and (5) Package / Case (4-SIP, KBJ). All substitute parts must match these parameters exactly.

Q: Does the packaging difference (Bulk versus Tube) affect electrical performance?

A: No. Packaging type (Bulk or Tube) is a logistics and handling specification only. It does not affect the electrical characteristics, performance, or compatibility of the bridge rectifier diode. Both packaging formats contain identical components.

Q: Are there any temperature range considerations when substituting?

A: The Diodes Incorporated KBJ4005G operates across a wider temperature range (-65°C to 150°C) compared to the GeneSiC part (-55°C to 150°C). This extended range provides additional margin for applications operating at lower ambient temperatures. Both parts are suitable for the same operating environment unless the application specifically requires operation below -55°C.

Q: What does ROHS3 compliance mean compared to RoHS Compliant?

A: ROHS3 represents a higher or more recent compliance certification level. Both designations indicate the part meets RoHS (Restriction of Hazardous Substances) requirements. The Diodes Incorporated part meets the more current ROHS3 standard, providing assurance of compliance with the latest regulatory requirements.

Q: How do the forward voltage specifications compare?

A: The GeneSiC part specifies 1.1 V @ 4 A, while the Diodes Incorporated part specifies 1 V @ 2 A. These measurements are taken at different current levels. The Diodes Incorporated specification indicates lower forward voltage drop at the 2 A measurement point, suggesting improved efficiency characteristics in that operating range.