Diodes Incorporated GBU602

Overview

GBU602 from Diodes Incorporated is a 6.0A standard recovery bridge rectifier in GBU package, rated for 200V maximum repetitive peak reverse voltage (VRRM), 1.0V forward voltage at 3A, and 5µA reverse leakage current at 25°C. It features glass-passivated die construction, 1500VRMS case dielectric strength, and 175A peak surge capability - used in AC/DC power supplies for industrial control panels requiring robust line-input rectification.

For engineers reviewing the GBU602 datasheet, GBU602 pinout, GBU602 application, or GBU602 equivalent, key selection criteria include VRRM margin for 120/240VAC input stages, thermal resistance (2.2°C/W junction-to-case with heatsink), IFSM rating for inrush tolerance, and UL recognition (E95060) for safety-compliant designs.

Technical Context

This single-phase, full-wave bridge rectifier integrates four silicon diodes in a common cathode/anode configuration to convert AC input into pulsating DC. Its standard recovery characteristic (non-fast/soft-recovery) suits general-purpose line-frequency applications where switching losses are secondary to cost and ruggedness.

Designed for through-hole mounting with #6 screw hole and 5.0 inch-pounds max torque, it operates from –55°C to +150°C junction temperature and delivers 6.0A average forward current when mounted on a 50mm × 50mm × 1.6mm copper heatsink - derated to ~3.5A without heatsink per Fig. 1.

Key Specifications

Pinout & Package

Package: GBU - 4-pin, single-in-line (SIP) plastic body with integrated mounting hole, UL 94V-0 rated, lead-free tin-plated leads, 3.7g weight.

Key Features

Applications

Equivalent & Alternatives

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

Compared with GBU602, GBU6K offers identical mechanical and electrical compatibility but trades marginal VF increase for supply-chain redundancy, while GBPC602 sacrifices surge robustness and UL compliance for alternate packaging - making GBU602 optimal for new designs prioritizing safety certification and inrush resilience.

Availability

GBU602 is available at Aetrix Electronics and suitable for industrial AC/DC power supplies, motor control rectification stages, and LED driver input stages requiring stable component supply, long-lifecycle support, and certified safety compliance.

Supply support for GBU602 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 GBU series belongs to Diodes' standard recovery bridge rectifier product line, engineered for cost-effective, high-reliability AC/DC conversion in industrial, appliance, and infrastructure power systems where thermal robustness and safety certification are essential.

FAQ

What is the maximum operating temperature for GBU602?

The GBU602 has a specified junction temperature range of –55°C to +150°C. Its thermal resistance is 2.2°C/W junction-to-case when mounted on a 50mm × 50mm × 1.6mm copper heatsink. Without heatsink, average current must be derated to approximately 3.5A at 25°C ambient to stay within TJ limit.

Is GBU602 suitable for use in automotive applications?

GBU602 is not AEC-Q101 qualified and lacks PPAP documentation or IATF 16949 manufacturing evidence in its public datasheet. While it operates across –55°C to +150°C, Diodes explicitly states that automotive-grade variants require direct consultation - so it is intended for industrial, commercial, and consumer applications, not automotive safety-critical systems.

How does the GBU602 differ from fast recovery or Schottky bridge rectifiers?

GBU602 uses standard recovery silicon diodes with typical reverse recovery time >1.5µs, resulting in higher switching losses at high frequencies. Unlike fast recovery (e.g., GBU6J) or Schottky bridges, it is optimized for 50/60Hz line-frequency operation - offering lower cost, higher VRRM scalability, and better surge robustness, but unsuitable for high-frequency SMPS primary-side rectification.

Can GBU602 be mounted directly to a metal chassis without insulation?

No. Although the GBU package has a mounting hole, the case is electrically connected to the DC– terminal. Direct chassis mounting creates a short unless insulated bushings and shoulder washers are used. For grounded-chassis designs, mount via insulating hardware and verify creepage/clearance distances meet IEC 62368-1 requirements.