Taiwan Semiconductor Corporation DBL106G-T

Overview

DBL106G-T from Taiwan Semiconductor is a 1 A, 800 V repetitive peak reverse voltage (VRRM) standard quad bridge rectifier in DBL package, featuring 40 A peak forward surge current (IFSM), 15 °C/W junction-to-lead thermal resistance, and RoHS/halogen-free compliance - used in AC/DC front-end stages of compact switching mode power supplies.

For engineers reviewing the DBL106G-T datasheet, DBL106G-T pinout, DBL106G-T application, or DBL106G-T equivalent, key selection factors include VRRM rating for input voltage derating, IFSM margin against line surges, thermal performance under convection-limited PCB layouts, and DBL package compatibility with automated assembly.

Technical Context

The DBL106G-T integrates four silicon diodes in a single-phase full-wave bridge configuration with common-cathode and common-anode terminals externally accessible. Its DBL molded plastic package supports surface-mount reflow and through-hole insertion, with matte tin-plated leads meeting J-STD-002 solderability and JESD 201 Class 1A whisker resistance.

Rated for continuous operation up to TJ = 150 °C, it delivers VF ≤ 1.1 V at IF = 1 A and IR ≤ 2 µA at VR = 800 V and TJ = 25 °C, with CJ = 25 pF per diode at 1 MHz and VR = 4.0 V - enabling stable rectification in high-frequency SMPS inputs without excessive switching loss or EMI coupling.

Key Specifications

Pinout & Package

DBL106G-T uses the DBL package: a 4-pin single-in-line molded plastic housing with matte tin-plated leads, 7.1 mm lead spacing, and polarity marked on top surface. Weight: 0.360 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with GBU4K and MB10F, the DBL106G-T offers optimal balance of compact DBL footprint, 40 A surge capability, and UL recognition - making it preferred for cost-sensitive, space-constrained, and safety-certified consumer power supplies where thermal management relies on PCB copper rather than heatsinks.

Availability

DBL106G-T is available at Aetrix Electronics and suitable for switching mode power supplies, LED lighting drivers, and industrial control power supplies requiring stable component supply, consistent parametric performance, and full regulatory documentation traceability.

Supply support for DBL106G-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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global power, industrial, and consumer markets since 1979.

The DBL106G-T belongs to TSC's standard bridge rectifier product line, engineered for high-volume, cost-optimized AC/DC conversion in safety-critical and thermally constrained applications - emphasizing reliability, regulatory compliance, and manufacturability.

FAQ

What is the peak repetitive reverse voltage rating of DBL106G-T?

The DBL106G-T has a repetitive peak reverse voltage (VRRM) rating of 800 V, verified per Taiwan Semiconductor's C2103 datasheet revision. This rating applies to each diode in the bridge and defines the maximum instantaneous reverse voltage the device can block repeatedly without breakdown. It supports universal AC input ranges up to 265 VAC with appropriate safety margin, and must be respected in all operating conditions including transient overvoltage events.

Does DBL106G-T meet RoHS and halogen-free requirements?

Yes, DBL106G-T is RoHS compliant and halogen-free per IEC 61249-2-21, as confirmed in the official Taiwan Semiconductor datasheet (Version C2103). The DBL package uses halogen-free molding compound, and all terminations are matte tin-plated - satisfying environmental compliance for export to EU, China, and other regulated markets without requiring additional material declarations.

What is the forward voltage drop of DBL106G-T at rated current?

The DBL106G-T exhibits a maximum forward voltage (VF) of 1.1 V per diode at IF = 1 A and TJ = 25 °C, per electrical specifications in the C2103 datasheet. Since the device contains four diodes in bridge configuration, total conduction drop across the conducting pair is ≤2.2 V under DC load. VF increases with junction temperature and decreases slightly at lower currents, remaining within design margins for typical SMPS efficiency targets.

Can DBL106G-T be used in surface-mount applications?

DBL106G-T is designed for both through-hole and surface-mount assembly. Its DBL package features leads compatible with wave soldering and reflow profiles per J-STD-002, and the molded body meets UL 94V-0 flammability requirements. While not a true SMT-only part (e.g., no gull-wing or J-bend), its lead geometry supports automated placement and infrared reflow - commonly used in hybrid PCBs where mixed-technology assembly is required.

What is the thermal resistance from junction to lead for DBL106G-T?

The junction-to-lead thermal resistance (R_θJL) of DBL106G-T is 15 °C/W, as specified in the Thermal Performance section of the C2103 datasheet. This value reflects heat transfer from the silicon die to the outer lead frame under steady-state conditions and is critical for estimating junction temperature rise when the leads are thermally anchored to large copper areas - enabling accurate thermal design without external heatsinks in many adapter-class applications.