Taiwan Semiconductor Corporation GBU601

Overview

GBU601 from Taiwan Semiconductor is a 6A, 50V standard bridge rectifier in GBU package, featuring quad diode configuration, 175A surge current rating, 1.1V max forward voltage at 6A/25°C, and 1500VRMS dielectric strength-used in AC/DC front-end stages of compact switching power supplies.

For engineers reviewing the GBU601 datasheet, GBU601 pinout, GBU601 application, or GBU601 equivalent, key selection criteria include repetitive peak reverse voltage (50V), thermal resistance (R_θJA = 21°C/W), junction temperature range (–55°C to +150°C), and AEC-Q101 qualification availability for automotive-grade variants.

Technical Context

The GBU601 integrates four silicon diodes in a single-phase full-wave bridge configuration, enabling direct AC-to-DC conversion without external wiring. Its GBU molded package supports PCB mounting with matte tin-plated leads compliant to J-STD-002 solderability standards.

Thermal performance is defined by R_θJC = 2°C/W and R_θJA = 21°C/W, allowing 6A continuous conduction at case temperatures up to 95°C. Reverse leakage remains ≤5µA at 25°C and ≤500µA at 125°C under rated V_RRM.

Key Specifications

Pinout & Package

GBU601 uses a 4-terminal GBU molded plastic package with standardized pinout: AC1 and AC2 (input AC terminals), + (positive DC output), – (negative DC output). The case meets UL 94V-0 flammability rating and weighs approximately 4.00g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with GBU601, GBU6K offers broader distributor availability but requires thermal reassessment due to +4°C/W higher R_θJA, while KBU6A omits UL recognition-making GBU601 preferable for certified, thermally constrained, or automotive-adjacent designs.

Availability

GBU601 is available at Aetrix Electronics and suitable for switching mode power supplies, LED lighting drivers, and USB wall adapters requiring stable component supply, consistent lead-time visibility, and traceable sourcing.

Supply support for GBU601 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

Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving industrial, computing, and consumer markets since 1979.

The GBU601 belongs to TSC's standard bridge rectifier product line, engineered for high-reliability AC/DC conversion in space-constrained, thermally demanding power supplies across industrial and automotive-qualified applications.

FAQ

What is the maximum repetitive peak reverse voltage rating for GBU601?

The GBU601 has a maximum repetitive peak reverse voltage (V_RRM) rating of 50 V. This value is fixed for the GBU601 variant and distinguishes it from other members of the GBU60x family (e.g., GBU602 = 100 V). Exceeding this voltage risks irreversible breakdown of the internal diode junctions. Designers must ensure worst-case AC input peaks remain below 50 V when using GBU601.

Does GBU601 have AEC-Q101 qualification?

The base GBU601 is not AEC-Q101 qualified; however, the variant GBU601H-identical in all electrical and mechanical specifications except for qualification status-is AEC-Q101 certified. GBU601H carries the same "H" suffix per ordering code conventions and is intended for automotive body electronics and infotainment power supplies where stress-tested reliability is mandatory.

What is the forward voltage drop of GBU601 at full rated current?

At I_F = 6 A and T_J = 25°C, the GBU601 exhibits a maximum forward voltage drop (V_F) of 1.1 V per diode path. Since the bridge conducts through two series diodes during each half-cycle, total conduction loss is calculated using 2 × V_F, making thermal management critical at full load in enclosed designs.

Can GBU601 be used as a direct replacement for GBU6J?

No-GBU601 is not a direct replacement for GBU6J. While both are 6A bridge rectifiers in GBU packages, GBU6J has V_RRM = 600 V and different thermal characteristics (R_θJA = 25°C/W). Substituting GBU601 (50 V) in a 600 V circuit would cause immediate failure. Always verify V_RRM, I_FSM, and thermal data before cross-referencing.

What packaging and taping options are available for GBU601?

GBU601 is supplied in tube packaging: 20 units per tube. Tape-and-reel (TR) packaging is not offered for this part number. For automated assembly, customers should plan for manual or tube-fed placement. The "H" variant (GBU601H) uses identical tube packaging and shares the same mechanical dimensions and lead finish (matte tin, J-STD-002 compliant).