Taiwan Semiconductor Corporation KBL606G

Overview

KBL606G from Taiwan Semiconductor is a 6A, 800V repetitive peak reverse voltage (V_RRM) standard bridge rectifier in KBL package, featuring glass-passivated junctions, 175A non-repetitive surge capability (I_FSM), and 150°C maximum junction temperature - used for AC/DC conversion in off-line SMPS front-ends.

For engineers reviewing the KBL606G datasheet, KBL606G pinout, KBL606G application, or KBL606G equivalent, key selection criteria include V_RRM = 800V, I_F = 6A, thermal resistance R_θJL = 7.5°C/W, and UL recognition per file E-326243 - critical for industrial power adapter and lighting ballast designs requiring high reliability and RoHS compliance.

Technical Context

The KBL606G integrates four silicon diodes in a single-phase full-wave bridge configuration with quad-terminal layout (AC1, AC2, +, –), enabling direct replacement of discrete diode bridges in compact PCB layouts. Its glass-passivated junction ensures stable reverse leakage (<500 µA at 125°C) and robust surge handling under 8.3ms half-sine stress.

Thermally optimized for lead-mounted operation, it delivers R_θJL = 7.5°C/W and R_θJA = 13°C/W, supporting continuous 6A conduction at ambient temperatures up to 75°C without forced airflow - validated per JESD201 Class 1A whisker testing and UL 94V-0 molding compound compliance.

Key Specifications

Pinout & Package

Package: KBL - molded plastic body (19.5 × 15.2 × 4.6 mm), matte tin-plated leads, UL 94V-0 compliant, weight ≈5.6 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with GBU8K and MB10F, the KBL606G offers optimal balance of 6A current capacity, 800V rating, and KBL package thermal performance (R_θJL = 7.5°C/W) - making it preferred for mid-power industrial adapters and LED drivers where board area and thermal management are co-constrained.

Availability

KBL606G is available at Aetrix Electronics and suitable for switching mode power supplies, industrial AC/DC adapters, and commercial lighting ballasts requiring stable component supply across multi-year production cycles.

Supply support for KBL606G 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 KBL606G belongs to TSC's standard bridge rectifier product line, engineered for high-reliability AC/DC front-end conversion in cost-sensitive, thermally demanding applications such as off-line power supplies and lighting systems.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for KBL606G?

The KBL606G has a specified V_RRM of 800 V, confirmed in the Absolute Maximum Ratings table of Taiwan Semiconductor's H2308 datasheet. This value defines the highest instantaneous reverse voltage the device can block repeatedly without breakdown - essential for selecting appropriate input voltage derating margins in 277 VAC or 400 VAC three-phase rectification circuits. The KBL606G is part of the KBL601G–KBL607G family, where '6' in the suffix denotes the 800 V rating tier.

Does KBL606G meet UL safety certification requirements?

Yes, the KBL606G is UL Recognized under file number E-326243, as stated in the Features section of the official datasheet. This certification covers construction, flammability (UL 94V-0), and terminal plating (J-STD-002 solderability), allowing direct use in end products targeting UL/CSA compliance without requiring additional component-level safety testing. The KBL606G's UL recognition applies specifically to its KBL package configuration and material set.

What is the forward voltage drop (V_F) of KBL606G at rated current?

At I_F = 6 A and T_J = 25°C, the KBL606G exhibits a maximum forward voltage drop of 1.1 V per diode, totaling ~2.2 V across the bridge in conduction - verified in the Electrical Specifications table. This value directly impacts conduction losses (P_COND ≈ 13.2 W at full load), influencing thermal design and efficiency targets. Pulse test conditions (PW = 0.3 ms) ensure measurement accuracy under realistic switching conditions.

Can KBL606G be used in surface-mount applications?

No, the KBL606G uses through-hole matte tin-plated leads designed for wave or hand soldering into plated-through holes - not surface-mount reflow. Its KBL package has 4 axial-style terminals (AC1, AC2, +, –) with 5.6 mm lead spacing and 1.4 mm diameter, requiring ≥0.8 mm drill size and minimum 1.2 mm annular ring per IPC-7351. For SMT alternatives, consider TSC's SMBF or GBJ series, but note that KBL606G itself is exclusively through-hole.

What is the junction-to-lead thermal resistance (R_θJL) of KBL606G?

The KBL606G has a typical R_θJL of 7.5°C/W, as published in the Thermal Performance section of the datasheet. This parameter quantifies heat transfer efficiency from die to soldered lead - critical for estimating junction temperature rise when mounted on copper-pour PCBs or metal chassis. It is measured under standardized JEDEC conditions and enables accurate thermal modeling without heatsinks for ≤6 A continuous operation at ≤75°C ambient.