Taiwan Semiconductor Corporation DBL207G

Overview

DBL207G from Taiwan Semiconductor is a 2A, 1000V rated standard bridge rectifier in DBL package, featuring 50A peak surge current capability, 1.15V max forward voltage at 2A/25°C, and AEC-Q101 qualification option (DBL207GH). It serves as the AC-to-DC conversion stage in compact offline power supplies for LED drivers and industrial adapters.

For engineers reviewing the DBL207G datasheet, DBL207G pinout, DBL207G application, or DBL207G equivalent, key selection criteria include repetitive peak reverse voltage (1000V), thermal resistance (15°C/W junction-to-lead), RoHS/halogen-free compliance, and UL recognition (E-326854) for safety-critical designs.

Technical Context

The DBL207G integrates four silicon diodes in a single-phase full-wave bridge configuration with common-cathode and common-anode terminals. Its quad-diode layout enables direct AC input rectification without external interconnects, reducing PCB trace inductance and layout complexity.

Thermally optimized for conduction-cooled operation, it delivers 2A average forward current with junction temperature limited to 150°C and exhibits 10.3 A²s fusing rating under 8.3ms half-sine surge conditions - critical for handling line transients in universal-input SMPS.

Key Specifications

Pinout & Package

Package: DBL - Molded plastic case with matte tin-plated leads, UL 94V-0 rated, 0.380g weight, polarity marked on top surface.

Key Features

Applications

Equivalent & Alternatives

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

Compared with GBU6K and MB10F, the DBL207G offers superior thermal performance (15°C/W vs. 50°C/W), AEC-Q101 availability, and verified 2A/50A operation in a compact DBL outline - making it optimal for space- and reliability-constrained 10–25W offline converters.

Availability

DBL207G is available at Aetrix Electronics and suitable for LED lighting drivers, industrial AC/DC adapters, and consumer wall adapters requiring stable component supply, long-term lifecycle support, and compliance with UL, RoHS, and halogen-free standards.

Supply support for DBL207G 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, specializing in power rectifiers, TVS diodes, and MOSFETs since 1979.

The DBL201G–DBL209G series was designed specifically for cost-sensitive, high-volume AC/DC front-end rectification in industrial, lighting, and consumer power supplies - balancing surge robustness, thermal efficiency, and regulatory compliance in molded plastic packages.

FAQ

What is the maximum repetitive peak reverse voltage (VRRM) rating for DBL207G?

The DBL207G has a VRRM rating of 1000 V, as confirmed in the Absolute Maximum Ratings table across Versions K2103 pages 1–2. This value is specific to DBL207G within the DBL201G–DBL209G family and is validated by marking code "DBL207G" on the device body. The 1000V rating enables safe operation in 600VAC input systems with margin for transient overvoltage.

Is DBL207G suitable for automotive applications?

Yes - the DBL207GH variant (AEC-Q101 qualified) is explicitly listed in the Ordering Information section. While DBL207G itself is not automatically qualified, the "H" suffix denotes full AEC-Q101 compliance including HTGB, HTRB, and temperature cycling tests. For automotive use, specify DBL207GH and verify qualification status via TSC's official documentation.

What is the forward voltage drop of DBL207G at rated current?

The DBL207G exhibits a maximum forward voltage (VF) of 1.15 V per diode at IF = 2 A and TJ = 25°C, per the Electrical Specifications table on page 2. This value is measured under pulsed conditions (PW = 0.3 ms) and represents worst-case conduction loss for thermal design - actual VF decreases at lower currents or elevated junction temperatures.

Does DBL207G have UL recognition and what is the file number?

Yes, DBL207G is UL Recognized under File # E-326854, as stated in the FEATURES section on page 1. This certification covers dielectric strength, flammability (UL 94V-0), and construction compliance for end-equipment safety standards including UL 62368-1. The recognition applies to all DBL201G–DBL209G variants in the DBL package.

What is the thermal resistance from junction to lead (RθJL) for DBL207G?

The DBL207G has a typical junction-to-lead thermal resistance (RθJL) of 15°C/W, per the Thermal Performance table on page 2. This low value enables efficient heat transfer from the silicon die to the PCB copper through the leads, supporting 2A operation without external heatsinks when mounted on ≥2 oz copper with thermal vias.