Diodes Incorporated GBU1002

Overview

GBU1002 from Diodes Incorporated is a 10A standard recovery bridge rectifier with 200V maximum repetitive peak reverse voltage (VRRM), 1.0V forward voltage drop at 5A, and 5µA reverse leakage current at 25°C. It features glass-passivated die construction, 1500VRMS case dielectric strength, and is rated for 220A non-repetitive surge current. It is used in AC/DC power supplies for industrial control panels requiring robust line-frequency rectification.

For engineers reviewing the GBU1002 datasheet, GBU1002 pinout, GBU1002 application, or GBU1002 equivalent, key selection criteria include VRRM margin for 120/240VAC inputs, thermal resistance (2.2°C/W junction-to-case), mounting torque limit (5.0 in-lb), and UL recognition (E95060) for safety-compliant designs.

Technical Context

This device integrates four silicon diodes in a single-phase full-wave bridge configuration with standard recovery characteristics (trr not specified, consistent with standard recovery classification). Its 200V VRRM rating targets universal-input (85–265VAC) and 240VAC-only systems where fast recovery is unnecessary and cost-effective rectification is prioritized.

The GBU1002 operates across –55°C to +150°C junction temperature range and delivers 10A average forward current when mounted on a 100mm × 100mm × 1.6mm copper heatsink. Its 60pF typical junction capacitance at 1MHz/4V reverse bias supports stable behavior in low-frequency (<1kHz) rectifier applications without high-frequency switching noise concerns.

Key Specifications

Pinout & Package

Package: GBU - 4-pin through-hole plastic package with #6 screw mounting capability, UL 94V-0 flammability rating, matte tin terminals, and 3.7g mass. Dimensions: 22.05mm (L) × 7.65mm (W) × 18.55mm (H) typical.

Key Features

Applications

Equivalent & Alternatives

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

Compared with GBU10K and KBU10B, the GBU1002 offers the lowest forward voltage (1.0V), tightest leakage spec (5µA), and best thermal resistance (2.2°C/W), making it optimal for thermally constrained or low-standby-power industrial power supplies.

Availability

GBU1002 is available at Aetrix Electronics and suitable for industrial AC/DC power supplies, appliance motor control boards, and commercial HVAC control panels requiring stable component supply, long-life reliability, and UL-recognized safety certification.

Supply support for GBU1002 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 line-frequency power supplies targeting industrial, appliance, and lighting markets.

FAQ

What is the maximum case temperature for continuous operation of the GBU1002?

The GBU1002 supports continuous operation up to +100°C case temperature (TC) at its rated 10A average forward current, as defined in the Absolute Maximum Ratings table. Operation beyond this requires derating per Figure 1 in the datasheet, and thermal design must ensure junction temperature remains within –55°C to +150°C limits using the 2.2°C/W RθJC value and appropriate heatsinking.

Can the GBU1002 be used in a PCB layout with surface-mount assembly?

No - the GBU1002 uses a through-hole GBU package with screw-mount capability and is not compatible with surface-mount reflow or wave soldering processes. Its mechanical design requires mounting via #6 screw into a PCB pad or chassis, and terminals are intended for hand-soldering or press-fit insertion followed by mechanical fastening.

Does the GBU1002 meet automotive qualification standards such as AEC-Q101?

No - the GBU1002 is not AEC-Q101 qualified. The datasheet explicitly states that automotive-grade variants require specific change control, AEC-Q101 qualification, PPAP capability, and IATF 16949 manufacturing - none of which apply to the standard GBU1002. For automotive use, engineers must contact Diodes Incorporated directly for qualified alternatives.

How does the 1500VRMS dielectric strength impact system-level safety design?

The 1500VRMS isolation rating between AC input terminals and DC output terminals satisfies reinforced insulation requirements per IEC 62368-1 and UL 62368-1 for primary-to-secondary creepage/clearance in Class II power supplies. This allows simplified PCB layout with reduced spacing requirements and eliminates need for additional isolation barriers in many low-voltage DC-output applications.