Diodes Incorporated GBP308

Overview

GBP308 from Diodes Incorporated is a 3A standard recovery bridge rectifier with 800V maximum repetitive peak reverse voltage (VRRM), 1.05V forward voltage at 1.5A, and 5µA reverse leakage current at 25°C. It features glass-passivated die construction, UL 94V-0 plastic package, and is rated for operation from –55°C to +150°C. It is used in AC/DC power supplies for industrial control panels requiring robust, board-mountable rectification.

For engineers reviewing the GBP308 datasheet, GBP308 pinout, GBP308 application, or GBP308 equivalent, key selection criteria include VRRM rating, thermal resistance (RthJC = 9°C/W), surge current capability (90A IFSM at 8.3ms), junction capacitance (25pF), and compliance with RoHS, halogen-free, and AEC-Q200-ready manufacturing standards.

Technical Context

This device integrates four silicon diodes in a single-phase full-wave bridge configuration with molded plastic encapsulation and matte tin-plated leads. Its glass-passivated junction ensures stable reverse characteristics up to 125°C, where IR rises to 500µA, and supports reliable operation under transient overvoltage conditions per IEC 61000-4-5.

The GBP308 delivers 3.0A average forward current when mounted on a heatsink at TC = +100°C, derating to 1.8A without heatsink. Its thermal resistance junction-to-case (9°C/W) and junction-to-ambient (20°C/W) are measured on a 30mm × 30mm × 1mm copper plate, defining PCB layout and thermal management requirements for continuous conduction mode designs.

Key Specifications

Pinout & Package

Package: GBP - 4-terminal molded plastic bridge rectifier with body polarity indicator, 1.33g mass, UL 94V-0 rated, lead-free and halogen-free "Green" construction.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar bridge rectifier applications.

Compared with GBU8K and KBPC308, GBP308 offers superior surge current margin (90A vs. 75A/-), lower forward voltage (1.05V vs. 1.1V/-), and smallest footprint among 3A/800V bridges - making it optimal for thermally dense, high-reliability AC/DC front-ends.

Availability

GBP308 is available at Aetrix Electronics and suitable for industrial AC/DC power supplies, motor drive input rectification, and LED driver input stages requiring stable component supply, long-lifecycle availability, and traceable green sourcing.

Supply support for GBP308 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.

The GBP series belongs to Diodes' standard recovery bridge rectifier product line, engineered for cost-effective, high-reliability AC/DC conversion in industrial, appliance, and lighting applications where thermal stability and safety certification are essential.

FAQ

What is the maximum operating temperature for GBP308?

The GBP308 has a specified junction temperature range of –55°C to +150°C. Its thermal resistance junction-to-case is 9°C/W, so sustained operation at 150°C requires proper heatsinking and derating of IF(AV) per Figure 1 in the datasheet. At TC = +100°C with heatsink, it delivers 3.0A average forward current.

Is GBP308 suitable for automotive applications?

GBP308 is manufactured in IATF 16949-certified facilities and supports PPAP documentation, but it is not AEC-Q101 qualified out-of-the-box. For automotive use, Diodes recommends contacting their application engineering team to confirm qualification status and obtain change-controlled versions meeting AEC-Q200 stress test requirements.

How does GBP308 differ from GBP306 and GBP310?

GBP306, GBP308, and GBP310 share identical package, thermal specs, and forward characteristics (VF, IF(AV), IFSM), differing only in VRRM: 600V, 800V, and 1000V respectively. GBP308 provides optimal voltage margin for 230VAC systems (230V × √2 ≈ 325V peak), offering headroom for transients without over-specifying.

Can GBP308 be soldered using standard reflow profiles?

Yes - GBP308 uses matte tin-plated leads compliant with MIL-STD-202 Method 208 and supports both wave and reflow soldering. Its plastic package is rated for peak reflow temperatures up to 260°C for 10 seconds. Pre-baking is not required unless exposed to high-humidity environments exceeding JEDEC MSL 1 conditions.