Diodes Incorporated GBJ15JL-TU

Overview

GBJ15JL-TU from Diodes Incorporated is a 15A, 600V glass-passivated single-phase bridge rectifier in GBJ package, featuring low forward voltage (0.90 V max @ 7.5 A), high surge current capability (400 A peak @ 1.0 ms), and 2500 VRMS dielectric strength-designed for AC/DC power conversion in industrial power supplies and motor drive front-ends.

For engineers reviewing the GBJ15JL-TU datasheet, GBJ15JL-TU pinout, GBJ15JL-TU application, or GBJ15JL-TU equivalent, key selection criteria include thermal resistance (R_θJC = 1.2 °C/W), junction temperature range (–40 to +150 °C), leakage current (≤10 µA @ 600 V), and UL recognition (E95060) for safety-critical AC-input stages.

Technical Context

This bridge rectifier integrates four silicon diodes in a single GBJ molded plastic case with matte tin-plated leads, enabling full-wave rectification without external interconnects. Its glass-passivated die construction ensures stable reverse characteristics and high reliability under repetitive surge stress.

The device operates across –40°C to +150°C junction temperature, with derated average current of 4.5 A without heatsink and 15 A with heatsink at T_C = +120°C. Thermal performance is validated on a 200 mm × 200 mm × 2 mm copper plate, yielding R_θJC = 1.2 °C/W and R_θJL = 2.3 °C/W.

Key Specifications

Pinout & Package

Package: GBJ (single-in-line, 4-terminal molded plastic case, 30.0 mm × 20.0 mm × 17.5 mm, weight ≈6.6 g). Polarity indicator symbol molded on body; terminals are AC1, AC2, +, –.

Key Features

Applications

Equivalent & Alternatives

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

Compared with GBJ15K-TU, the GBJ15JL-TU offers lower forward drop for reduced conduction loss in standard 230 V AC systems; versus GBU15J, it provides verified UL compliance and superior thermal performance critical for safety-certified and space-constrained designs.

Availability

GBJ15JL-TU is available at Aetrix Electronics and suitable for industrial power supplies, motor drive front-ends, medical AC/DC conversion, and renewable energy auxiliary supplies requiring stable component supply, long-life reliability, and safety certification support.

Supply support for GBJ15JL-TU 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 GBJ series belongs to Diodes' high-current bridge rectifier product line, engineered for robustness in harsh environments-specifically targeting industrial, medical, and automotive-qualified power conversion where thermal stability, surge immunity, and safety certification are mandatory.

FAQ

What is the maximum junction temperature and how does it affect derating?

The GBJ15JL-TU has a rated junction temperature range of –40°C to +150°C. At T_J = +150°C, its average forward current drops to 4.5 A without heatsink and remains at 15 A only when case temperature is maintained at +120°C with adequate heatsinking. Derating curves in Figure 1 show linear reduction above +120°C case temperature, requiring thermal design validation for sustained high-load operation.

Is GBJ15JL-TU suitable for automotive applications?

GBJ15JL-TU is not AEC-Q101 qualified out-of-the-box. While it meets RoHS, halogen-free, and UL requirements, Diodes states that automotive-grade versions require specific change control, PPAP capability, and IATF 16949 manufacturing-available only upon direct request and qualification. Standard GBJ15JL-TU is intended for industrial, medical, and commercial power systems.

How does the 2500 V_RMS dielectric strength translate to real-world isolation safety?

The 2500 V_RMS case dielectric strength is measured between all AC terminals and the metal heatsink mounting surface (or chassis ground), satisfying reinforced insulation requirements per IEC 60950-1 and IEC 62368-1. It enables safe operation in Class I equipment with basic insulation plus protective earth, and supports double-insulation schemes in Class II devices without grounding.

Can GBJ15JL-TU be used without a heatsink in low-duty-cycle applications?

Yes-its 4.5 A average current rating at T_C = +120°C applies without heatsink, making it viable for intermittent or pulsed loads (e.g., battery charger standby mode or low-power auxiliary rails). However, thermal simulation must confirm peak junction temperature stays below +150°C during worst-case surge events, especially given its 2.3 °C/W junction-to-lead resistance.