Taiwan Semiconductor Corporation DBLS106G-T

Overview

DBLS106G-T from Taiwan Semiconductor is a 1 A, 800 V repetitive peak reverse voltage (V_RRM) standard quad bridge rectifier in DBLS package, featuring 40 A peak forward surge current (I_FSM), 15 °C/W junction-to-lead thermal resistance, and RoHS/halogen-free compliance - used in AC/DC front-end stages of compact SMPS and LED drivers.

For engineers reviewing the DBLS106G-T datasheet, DBLS106G-T pinout, DBLS106G-T application, or DBLS106G-T equivalent, key selection criteria include verified V_RRM = 800 V, I_F = 1 A continuous rating, I_FSM = 40 A (8.3 ms), T_JMAX = 150 °C, and DBLS surface-mount package compatibility with IPC-7351B land patterns.

Technical Context

The DBLS106G-T integrates four silicon diodes in a single-phase bridge configuration with common-cathode/common-anode internal layout, enabling full-wave rectification without external interconnects. Its DBLS molded plastic package provides UL 94V-0 flammability rating and matte tin-plated leads compliant with J-STD-002 solderability.

Thermal performance is defined by R_θJL = 15 °C/W and R_θJA = 40 °C/W, supporting operation up to 150 °C junction temperature. Electrical behavior includes V_F ≤ 1.1 V at I_F = 1 A, I_R ≤ 2 µA at 25 °C and ≤ 100 µA at 125 °C per diode, and C_J = 25 pF at 1 MHz / 4 V.

Key Specifications

Pinout & Package

DBLS106G-T uses the DBLS surface-mount package: 4-pin, single-row, gull-wing lead form, 5.0 mm × 4.2 mm footprint, 1.5 mm height, UL 94V-0 molded compound, matte tin-plated leads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with GBU6K-E3/51 and GBU6J-E3/51, the DBLS106G-T delivers identical 800 V blocking capability in a space-constrained surface-mount package - critical for modern adapter miniaturization - while trading off higher current headroom for reduced board area and automated assembly compatibility.

Availability

DBLS106G-T is available at Aetrix Electronics and suitable for switching mode power supplies, LED lighting drivers, and USB-C wall adapters requiring stable component supply across industrial and consumer production cycles.

Supply support for DBLS106G-T 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 semiconductor manufacturer specializing in discrete power devices, including rectifiers, TVS diodes, and MOSFETs, with ISO 9001 and IATF 16949 certified facilities.

The DBLS series was designed specifically for high-density, cost-sensitive AC/DC front-end rectification in compact power supplies - emphasizing thermal efficiency, regulatory compliance, and SMT manufacturability.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for DBLS106G-T?

The DBLS106G-T has a specified V_RRM of 800 V, confirmed in the Absolute Maximum Ratings table across all official Taiwan Semiconductor documentation versions (C2103). This rating applies under standard test conditions (T_A = 25 °C) and defines the highest instantaneous reverse voltage the device can block repeatedly without breakdown. It supports use with 560 V_RMS AC inputs, making DBLS106G-T suitable for 277 VAC lighting and industrial 400 VAC systems.

Is DBLS106G-T compatible with lead-free reflow soldering processes?

Yes, DBLS106G-T is fully compatible with lead-free reflow soldering. Its matte tin-plated leads meet J-STD-002 solderability requirements, and its moisture sensitivity level is rated at Level 1 per J-STD-020 - meaning it can be subjected to standard Pb-free reflow profiles (peak temperature up to 260 °C) without baking. The DBLS106G-T package also complies with RoHS Directive 2011/65/EU and is halogen-free per IEC 61249-2-21.

What is the forward voltage drop (V_F) of DBLS106G-T at rated current?

The DBLS106G-T exhibits a maximum forward voltage drop of 1.1 V per diode at I_F = 1 A and T_J = 25 °C, as specified in the Electrical Specifications table. This value is measured under pulsed conditions (PW = 0.3 ms) to minimize self-heating. At elevated junction temperatures or higher currents, V_F may increase slightly, but remains within design margins for typical 1 A continuous applications such as low-power SMPS and LED drivers.

Does DBLS106G-T have UL recognition, and what is the file number?

Yes, DBLS106G-T is UL Recognized with File # E-326854, explicitly stated in the FEATURES section of the official Taiwan Semiconductor datasheet (Version C2103). This recognition covers the DBLS package construction and confirms compliance with UL 60950-1 and UL 62368-1 for end-product safety evaluations. The marking "DBLS106G" on the device body corresponds to this certified configuration.

What is the peak forward surge current (I_FSM) rating for DBLS106G-T?

The DBLS106G-T is rated for a peak forward surge current (I_FSM) of 40 A under an 8.3 ms single half-sine wave condition, as documented in the Absolute Maximum Ratings table. This rating applies specifically to the DBLS106G-T and DBLS104G-T variants (distinct from DBLS105G-T/DBLS107G-T, which are rated at 30 A). It reflects robustness against line-connected inrush events in AC/DC power supplies.