Taiwan Semiconductor Corporation DBLS202G RDG

Overview

DBLS202G from Taiwan Semiconductor is a 2 A, 100 V repetitive peak reverse voltage (VRRM) standard quad bridge rectifier in DBLS surface-mount package, with 50 A peak surge current (IFSM), 1.15 V forward voltage at 2 A/25°C, and AEC-Q101 qualification option (DBLS202GH). It is used in AC/DC front-end stages of compact switching mode power supplies.

For engineers reviewing the DBLS202G datasheet, DBLS202G pinout, DBLS202G application, or DBLS202G equivalent, key selection criteria include VRRM margin for line-voltage transients, thermal resistance (RθJL = 15 °C/W), surge robustness (IFSM = 50 A), and RoHS/halogen-free compliance for automotive and industrial end equipment.

Technical Context

The DBLS202G integrates four silicon diodes in a single-phase full-wave bridge configuration, enabling direct AC-to-DC conversion without external interconnects. Its DBLS molded plastic package supports automated SMT assembly and provides UL 94V-0 flammability rating with matte tin-plated leads compliant to J-STD-002 solderability.

Thermal performance is defined by junction-to-lead resistance of 15 °C/W and junction-to-ambient resistance of 40 °C/W, allowing sustained 2 A average forward current (IF) within -55°C to +150°C operating junction temperature range. Reverse leakage remains ≤2 µA at 25°C and ≤500 µA at 125°C under rated VR.

Key Specifications

Pinout & Package

Package: DBLS - Surface-mount, molded plastic case with 4 terminals (AC1, AC2, +, –), UL 94V-0 rated, 0.360 g weight, matte tin-plated leads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with GBU2K and MB2S, the DBLS202G delivers superior thermal performance (RθJL = 15 °C/W), SMT compatibility, and optional AEC-Q101 qualification-making it optimal for space-constrained, high-reliability, or automotive-adjacent industrial power supplies.

Availability

DBLS202G is available at Aetrix Electronics and suitable for switching mode power supplies, USB adapters, and LED lighting applications requiring stable component supply, consistent parametric performance, and long-term production continuity.

Supply support for DBLS202G 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 industrial, computing, and consumer markets since 1979.

The DBLS series was developed to deliver high-surge, surface-mount bridge rectifiers with automotive-grade reliability options and tight parametric consistency across voltage grades from 50 V to 1400 V.

FAQ

What is the peak repetitive reverse voltage rating of DBLS202G?

The DBLS202G has a repetitive peak reverse voltage (VRRM) rating of 100 V. This value is specified in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version J2103) and defines the maximum allowable reverse voltage the device can block repeatedly without breakdown. It is selected for universal-input (85–265 VAC) applications where peak line voltage reaches ~375 V, requiring appropriate derating and circuit protection.

Does DBLS202G have AEC-Q101 qualification?

The standard DBLS202G is not AEC-Q101 qualified; however, the variant DBLS202GH is explicitly listed in the Ordering Information section as AEC-Q101 qualified. This qualification applies to the same electrical and thermal specifications but includes additional stress testing per AEC-Q101 standards for automotive under-hood environments. Always verify the "H" suffix in the order code when automotive reliability is required.

What is the forward voltage drop of DBLS202G at rated current?

The DBLS202G exhibits a typical forward voltage (VF) of 1.15 V per diode at IF = 2 A and TJ = 25°C, as stated in the Electrical Specifications table. This value is measured under pulsed conditions (PW = 0.3 ms) and represents conduction loss under nominal load. At elevated junction temperatures (e.g., 125°C), VF decreases slightly, improving efficiency but requiring thermal design validation.

How is thermal management handled for DBLS202G in high-power applications?

DBLS202G uses a DBLS package with a junction-to-lead thermal resistance (RθJL) of 15 °C/W, enabling efficient heat transfer to the PCB via its exposed leadframe. For continuous 2 A operation, designers must provide adequate copper area on the + and – pads, avoid thermal isolation, and consider ambient temperature limits. The junction-to-ambient resistance (RθJA = 40 °C/W) assumes standard JEDEC test board conditions; actual performance depends on board layout and airflow.

What packaging and reel options are available for DBLS202G?

DBLS202G is supplied in tape-and-reel format only, with 1,500 units per reel. The ordering code DBLS202G corresponds to the standard version; DBLS202GH denotes the AEC-Q101 qualified version. Both use the same DBLS surface-mount package and share identical mechanical dimensions, marking layout, and moisture sensitivity level (MSL 1), eliminating bake requirements prior to reflow soldering.