Taiwan Semiconductor Corporation DBLS201G C1G

Overview

DBLS201G from Taiwan Semiconductor is a 2 A, 50 V standard quad bridge rectifier in DBLS surface-mount package, featuring 50 A peak surge current, 15 °C/W junction-to-lead thermal resistance, and AEC-Q101 qualification option (DBLS201GH). It delivers reliable AC-to-DC conversion in compact power adapters.

For engineers reviewing the DBLS201G datasheet, DBLS201G pinout, DBLS201G application, or DBLS201G equivalent, key selection criteria include repetitive peak reverse voltage (50 V), forward voltage (1.15 V @ 2 A), moisture sensitivity level (J-STD-020 Level 1), UL recognition (E-326854), and RoHS/halogen-free compliance.

Technical Context

The DBLS201G integrates four silicon diodes in a single-phase bridge configuration with common-cathode/common-anode topology. Its DBLS molded plastic package supports automated SMT assembly and meets UL 94V-0 flammability rating.

Thermal performance is defined by R_θJL = 15 °C/W and R_θJA = 40 °C/W, enabling operation up to T_J = 150 °C. Reverse leakage remains ≤2 µA at 25 °C and ≤500 µA at 125 °C under rated V_RRM.

Key Specifications

Pinout & Package

Package: DBLS - surface-mount, 4-terminal molded plastic case with matte tin-plated leads, UL 94V-0 rated compound, 0.360 g 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 GBU2K and GBU2A, the DBLS201G offers superior board-area efficiency and lower thermal resistance in SMT form factor, while maintaining identical electrical performance at 50 V - making it optimal for space-constrained, high-volume adapter and lighting applications.

Availability

DBLS201G is available at Aetrix Electronics and suitable for switching mode power supplies, USB-C adapters, and LED lighting applications requiring stable component supply and consistent tape-and-reel delivery.

Supply support for DBLS201G 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 DBLS series was developed to deliver high-reliability, cost-optimized bridge rectifiers in compact surface-mount packages for high-efficiency, high-density AC/DC power conversion - especially where thermal management, regulatory compliance, and automated assembly are critical.

FAQ

What is the maximum junction temperature rating for DBLS201G?

The DBLS201G has a maximum junction temperature (T_J) of +150 °C, with an operating range from –55 °C to +150 °C. This rating is validated under steady-state conditions with proper PCB copper area and ambient airflow. Derating curves in the datasheet specify allowable average forward current versus case temperature, ensuring safe operation across industrial temperature profiles.

Is DBLS201G pin-compatible with other DBLS-series rectifiers like DBLS202G or DBLS203G?

Yes, all DBLS201G–DBLS209G devices share identical DBLS package dimensions, pinout, and terminal configuration - only V_RRM and related parameters differ. A DBLS201G can be substituted for DBLS202G in a 100 V design only if reverse voltage stress remains ≤50 V; otherwise, overvoltage risk exists. Always verify system-level reverse voltage margins before interchange.

Does DBLS201G meet automotive qualification standards?

The base DBLS201G is not AEC-Q101 qualified, but the DBLS201GH variant is explicitly certified to AEC-Q101. The "H" suffix denotes automotive-grade screening including extended temperature cycling, high-temperature reverse bias, and accelerated life testing. For automotive applications, specify DBLS201GH - not DBLS201G - to ensure compliance.

What is the forward voltage drop of DBLS201G at rated current?

The DBLS201G exhibits a typical forward voltage (V_F) of 1.15 V per diode at I_F = 2 A and T_J = 25 °C, measured under pulsed conditions (PW = 0.3 ms). At elevated junction temperatures (e.g., 125 °C), V_F decreases slightly due to negative temperature coefficient, remaining within 1.05–1.15 V range under normal operating loads.

How is moisture sensitivity handled for DBLS201G during PCB assembly?

DBLS201G is rated Moisture Sensitivity Level 1 per J-STD-020, meaning it may be stored indefinitely at ≤30 °C/60% RH and subjected to standard lead-free reflow profiles (peak 260 °C) without preconditioning or baking. This eliminates moisture-related popcorning risk and simplifies SMT line integration for high-mix manufacturing environments.