Diodes Incorporated KBJ20L06

Overview

KBJ20L06 from Diodes Incorporated is a 20A, 600V glass-passivated bridge rectifier in KBJ package, featuring low forward voltage (0.9V max @10A), 10µA max reverse leakage at 25°C, and UL recognition (E95060). It delivers high surge capability (200A @8.3ms) and operates from –55°C to +150°C, ideal for AC/DC power supplies in industrial motor drives and LED lighting systems.

For engineers reviewing the KBJ20L06 datasheet, KBJ20L06 pinout, KBJ20L06 application, or KBJ20L06 equivalent, key selection criteria include peak repetitive reverse voltage, average forward current with/without heatsink, thermal resistance (R_θJA = 28°C/W unmounted), junction capacitance (180pF), and RoHS/halogen-free compliance for automotive-qualified designs.

Technical Context

The KBJ20L06 integrates four silicon diodes in a single-phase full-wave bridge configuration with glass-passivated junctions for enhanced reliability under transient stress. Its construction enables stable operation up to 150°C junction temperature and supports both PCB-mount and chassis-mount configurations via matte tin-plated leads.

Thermal performance is defined by dual derating curves: 20A at 150°C case temperature with heatsink vs. 4.3A without; R_θJC = 1.5°C/W with heatsink confirms efficient heat transfer to external thermal mass. Junction capacitance of 180pF at 1MHz/4V reverse bias impacts high-frequency ripple rejection in switching supply front-ends.

Key Specifications

Pinout & Package

Package: KBJ molded plastic case, 4.6g weight, matte tin-plated leads, polarity marked on body. Mounting position unrestricted.

Key Features

Applications

Availability

KBJ20L06 is available at Aetrix Electronics and suitable for industrial motor drives, LED street lighting, and PLC power supplies requiring stable component supply across extended temperature ranges and high-surge environments.

Supply support for KBJ20L06 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 and manufacturing facilities across Asia and the Americas.

The KBJ series bridges belong to Diodes' high-reliability rectifier product line, engineered for cost-sensitive yet thermally demanding AC/DC conversion in industrial and outdoor lighting applications.

FAQ

What is the maximum allowable case temperature for continuous 20A operation?

The KBJ20L06 sustains 20A average forward current only when the case temperature remains at or below +150°C, as specified in Figure 1 of the datasheet. This requires active or substantial passive heatsinking; operation at 20A with no heatsink is limited to 4.3A per Figure 2.

Is KBJ20L06 qualified for automotive applications?

KBJ20L06 is not AEC-Q101 qualified out-of-the-box. Diodes states that automotive-grade versions require specific change control, PPAP capability, and IATF 16949 manufacturing - customers must contact Diodes directly to request such variants; standard KBJ20L06 is intended for industrial/commercial use.

How does the 180pF junction capacitance affect EMI performance?

At 1MHz and 4V reverse bias, the 180pF junction capacitance forms part of the high-frequency impedance path between AC lines and DC bus. In conjunction with X/Y capacitors, it influences common-mode noise filtering effectiveness and must be accounted for in conducted EMI filter tuning.

Can KBJ20L06 replace KBJ2006 in existing designs?

Yes - KBJ20L06 is a direct upgrade to KBJ2006, offering identical 600V V_RRM and 20A rating but with lower V_F (0.9V vs. 1.1V typical), improved thermal resistance, and halogen-free/Green compliance. No layout or thermal redesign is needed for drop-in replacement.