DBF250G Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The DBF250G is a single-phase bridge rectifier manufactured by onsemi, rated for 600 V peak reverse voltage with 4.6 A average rectified current. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing system support and new design implementations. The through-hole 4-SIP package configuration and standard rectification technology establish the baseline for equivalent part selection.

Substiute Parts

DBF250G

onsemiIn Stock: 1192DBF250G Datasheet

Current PartRFQ

KBL06-E4/51

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

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DBF250G are identified based on the following critical parameters:

• Voltage Rating: Peak reverse voltage must be 600 V or greater
• Current Rating: Average rectified current must meet or exceed 4.6 A
• Diode Configuration: Single-phase bridge rectifier topology
• Technology: Standard rectification technology
• Mounting: Through-hole configuration
• Package Type: 4-SIP form factor compatibility

The KBL06-E4/51 qualifies as a substitute based on matching voltage and exceeding current specifications, maintaining identical mounting and package compatibility while offering improved performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The KBL06-E4/51 serves as the primary substitute for the obsolete DBF250G. Selection is based on the following factors:

Electrical Compatibility: The KBL06-E4/51 maintains the 600 V peak reverse voltage specification and exceeds the 4.6 A current requirement with a 4 A rating. Forward voltage characteristics remain within acceptable operating parameters.

Product Status: The KBL06-E4/51 is classified as active, ensuring continued availability and manufacturing support. The DBF250G obsolete status necessitates substitution for new procurements and system redesigns.

Regulatory Compliance: Both parts maintain REACH Unaffected status. The KBL06-E4/51 carries RoHS3 compliance, meeting current environmental standards.

Thermal Performance: The KBL06-E4/51 provides an extended operating temperature range (-50°C to 150°C) compared to the DBF250G (150°C maximum), offering improved thermal margin in applications with lower ambient temperature requirements.

Package Compatibility: Both components utilize 4-SIP through-hole packaging, supporting direct board-level substitution with identical PCB footprints.

Frequently Asked Questions (FAQ)

Q: Can the KBL06-E4/51 directly replace the DBF250G in existing designs?

A: Yes. Both parts share identical voltage ratings (600 V), through-hole mounting, and 4-SIP package configuration. The KBL06-E4/51 exceeds the current specification (4 A vs. 4.6 A), making it electrically compatible for direct substitution without circuit modification.

Q: What are the key differences between these parts?

A: The primary differences are product status (DBF250G is obsolete; KBL06-E4/51 is active), current rating (4.6 A vs. 4 A), operating temperature range (-50°C to 150°C vs. 150°C maximum), and reverse leakage characteristics (5 µA vs. 10 µA at 600 V). The KBL06-E4/51 also includes RoHS3 compliance.

Q: Are there package footprint differences between DBF and KBL variants?

A: Both use 4-SIP through-hole packages. While the DBF and KBL designations indicate different manufacturer series, the physical footprint and pin configuration remain compatible for PCB mounting.

Q: What is the significance of the lower reverse leakage in the KBL06-E4/51?

A: The KBL06-E4/51 exhibits 5 µA reverse leakage compared to 10 µA in the DBF250G at 600 V. This represents improved leakage performance, which can reduce standby power consumption in applications sensitive to reverse current characteristics.

Q: Is the extended temperature range of the KBL06-E4/51 relevant for all applications?

A: The extended range (-50°C to 150°C) provides additional thermal margin for applications operating in cold environments. For applications limited to 0°C and above, both parts perform equivalently at the upper temperature boundary.