KBU2501-G Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The KBU2501-G is a single-phase bridge rectifier manufactured by Comchip Technology, rated for 100 V peak reverse voltage and 3.6 A average rectified current. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and procurement continuity. The through-hole KBU package configuration and standard rectification technology establish the baseline for equivalent part selection.

Substiute Parts

KBU2501-G

Comchip TechnologyIn Stock: 833KBU2501-G Datasheet

Current PartRFQ

GBU2501-HF

Comchip TechnologyIn Stock: 1141GBU2501-HF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the KBU2501-G is determined by the following critical parameters:

• Voltage Rating: Peak reverse voltage must equal or exceed 100 V
• Current Rating: Average rectified current must meet or exceed 3.6 A
• Diode Type: Single-phase bridge rectifier configuration required
• Technology: Standard rectification technology
• Mounting: Through-hole configuration
• Package Compatibility: 4-SIP form factor (KBU or GBU variants acceptable)
• Temperature Range: Operating range must encompass -55°C ~ 150°C

The GBU2501-HF qualifies as a direct substitute based on matching voltage rating (100 V), exceeding current capacity (25 A vs. 3.6 A), maintaining single-phase bridge configuration, and preserving through-hole mounting in a compatible 4-SIP package variant (GBU).

Parameter Comparison

Engineering Selection Recommendations

The GBU2501-HF is the qualified substitute for the obsolete KBU2501-G based on electrical parameter compatibility and regulatory compliance. Both components maintain identical voltage ratings (100 V peak reverse) and operating temperature ranges (-55°C ~ 150°C). The GBU2501-HF provides superior current handling (25 A vs. 3.6 A), lower forward voltage drop (1.0 V vs. 1.1 V), and reduced reverse leakage current (5 µA vs. 10 µA), all favorable characteristics for direct substitution in existing circuit designs.

Both parts maintain ROHS3 compliance and identical ECCN/HTSUS classifications. The GBU2501-HF is currently in active production status, ensuring long-term availability and supply chain continuity. The 4-SIP through-hole package format remains consistent between KBU and GBU variants, supporting direct PCB footprint compatibility.

Frequently Asked Questions (FAQ)

Q: Can the GBU2501-HF directly replace the KBU2501-G on existing PCBs?

A: Yes. Both components use identical 4-SIP through-hole package geometry. The GBU variant maintains the same pin configuration and spacing as the KBU variant, enabling direct board-level substitution without layout modifications.

Q: What is the significance of the higher current rating on the GBU2501-HF?

A: The GBU2501-HF is rated for 25 A average rectified current compared to the KBU2501-G's 3.6 A rating. This higher capacity provides design margin and thermal headroom in applications originally specified for 3.6 A operation, reducing junction temperature stress during normal circuit operation.

Q: Are there compliance or certification differences between these parts?

A: No. Both the KBU2501-G and GBU2501-HF maintain identical RoHS3 compliance status, ECCN classification (EAR99), and HTSUS codes (8541.10.0080). Regulatory and trade compliance requirements are equivalent.

Q: Why is the KBU2501-G classified as obsolete?

A: The KBU2501-G has reached end-of-life status in the manufacturer's product portfolio. The GBU2501-HF represents the active production equivalent, offering improved electrical performance and assured long-term availability.

Q: What are the thermal operating limits for both parts?

A: Both the KBU2501-G and GBU2501-HF operate across an identical junction temperature range of -55°C to 150°C (TJ), supporting equivalent thermal design requirements across industrial and commercial temperature environments.