Diodes Incorporated KBJ6005G

Overview

KBJ6005G from Diodes Incorporated is a 6.0A standard recovery bridge rectifier with 50V peak repetitive reverse voltage (VRRM), 1.0V forward voltage at 3.0A, and 5.0µA reverse leakage current at 25°C, designed for AC-to-DC conversion in off-line power supplies and industrial control power stages.

For engineers reviewing the KBJ6005G datasheet, KBJ6005G pinout, KBJ6005G application, or KBJ6005G equivalent, key selection considerations include its 170A non-repetitive surge rating, 2500VRMS dielectric strength, through-hole KBJ package mounting, and suitability for 50/60Hz line-frequency rectification with resistive or inductive loads.

Technical Context

This single-phase, full-wave bridge rectifier integrates four silicon diodes in a common cathode/anode configuration to deliver unidirectional DC output from AC input. It operates with standard recovery characteristics (trr not specified, consistent with standard recovery classification) and requires derating by 20% under capacitive load conditions.

Thermal performance is defined with RθJC = 1.5°C/W per element when mounted on a 75mm × 75mm × 1.6mm aluminum heatsink, supporting continuous 6.0A average output current at TC = +110°C. Its glass-passivated die construction ensures stable reverse leakage and high reliability in humid or contaminated environments.

Key Specifications

Pinout & Package

Package: KBJ - Molded plastic case with bright tin-plated leads, UL 94V-0 flammability rating, through-hole mounting for #6 screw, 5.0 in-lbs max torque, 4.3g weight.

Key Features

Applications

Availability

KBJ6005G is available at Aetrix Electronics and suitable for industrial motor drives, LED streetlight power supplies, appliance control boards, and industrial PLC power modules requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for KBJ6005G 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 KBJ 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 fast recovery is not required.

FAQ

What is the maximum operating temperature for KBJ6005G?

The KBJ6005G has an operating junction temperature range of –55°C to +150°C. Its 6.0A average output current rating is specified at TC = +110°C, meaning the case must be maintained at or below this temperature under full load using appropriate heatsinking per the 1.5°C/W RθJC specification.

Is KBJ6005G suitable for capacitive-input filter applications?

No-KBJ6005G requires 20% current derating when used with capacitive-input filters due to high peak currents. Its standard recovery characteristics make it appropriate for resistive or inductive loads (e.g., choke-input filters or transformer-coupled supplies), but not recommended for direct connection to large bulk capacitors without additional limiting circuitry.

How does KBJ6005G differ from fast recovery bridges like GBU6K?

KBJ6005G uses standard recovery diodes (typical trr > 500ns, unspecified in datasheet), resulting in higher switching losses and EMI in high-frequency circuits. In contrast, GBU6K features fast recovery (trr ≈ 250ns) optimized for SMPS front-ends. KBJ6005G is intended for 50/60Hz line-frequency applications where low conduction loss and surge robustness outweigh switching speed needs.

Does KBJ6005G require a heatsink in all applications?

A heatsink is required to sustain 6.0A average current-RθJC = 1.5°C/W assumes mounting on a 75mm × 75mm × 1.6mm aluminum plate. At lower currents (<2A) or with adequate PCB copper area and airflow, a heatsink may be omitted, but thermal verification per actual layout and ambient conditions is mandatory to avoid exceeding TJ(max) = +150°C.