Taiwan Semiconductor Corporation DBLS201G

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, 1.15 V max forward voltage per diode at 2 A and 25°C, and AEC-Q101 qualification option (DBLS201GH). It serves as the AC-to-DC conversion stage in compact offline power supplies.

For engineers reviewing the DBLS201G datasheet, DBLS201G pinout, DBLS201G application, or DBLS201G equivalent, key selection criteria include repetitive peak reverse voltage (50 V), thermal resistance (15 °C/W junction-to-lead), 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 full-wave bridge configuration within a molded DBLS package. Its 50 V V_RRM rating targets low-voltage AC input applications such as 12–24 VAC adapters and auxiliary power rails.

Thermal performance is defined by R_θJL = 15 °C/W and R_θJA = 40 °C/W, enabling operation up to 150 °C junction temperature. 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 meeting UL 94V-0, matte tin-plated leads, 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 MB2S, the DBLS201G delivers verified 2 A continuous rectification in a compact surface-mount quad bridge with superior thermal resistance (15 °C/W J-to-L) and full regulatory alignment (UL, AEC-Q101 option, RoHS/halogen-free), making it optimal for space- and reliability-critical low-voltage SMPS designs.

Availability

DBLS201G is available at Aetrix Electronics and suitable for switching mode power supplies, AC-DC adapters, and LED lighting applications requiring stable component supply, consistent parametric performance, and long-term lifecycle support.

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 global industrial, computing, and consumer markets since 1979.

The DBLS series was designed specifically for high-reliability, cost-optimized AC-DC front-end rectification in compact power supplies, emphasizing manufacturability, thermal efficiency, and regulatory readiness.

FAQ

What is the maximum repetitive peak reverse voltage (VRRM) for DBLS201G?

The DBLS201G has a VRRM rating of 50 V, confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version J2103). This value defines the highest instantaneous reverse voltage the device can block repeatedly without breakdown. It is strictly specific to DBLS201G; higher-voltage variants (e.g., DBLS202G = 100 V) are separate orderable parts.

Is DBLS201G suitable for automotive applications?

Yes - the DBLS201GH variant is AEC-Q101 qualified and approved for automotive use. The base DBLS201G is not AEC-Q101 certified, but shares identical electrical and thermal specifications. For automotive designs, specify DBLS201GH to ensure qualification compliance while retaining the same 50 V VRRM, 2 A IF, and DBLS package.

What does the 'G' suffix in DBLS201G signify?

The 'G' suffix in DBLS201G indicates RoHS-compliant, halogen-free construction per IEC 61249-2-21 and EU Directive 2011/65/EU. It also denotes green molding compound (UL 94V-0 rated) and matte tin-plated leads compliant with J-STD-002 solderability standards. This suffix is standard across the DBLS201G–DBLS209G family.

What is the thermal resistance from junction to lead (RθJL) for DBLS201G?

The DBLS201G has a typical junction-to-lead thermal resistance (R_θJL) of 15 °C/W, as specified in the Thermal Performance section of the Taiwan Semiconductor datasheet. This parameter reflects heat transfer efficiency from the silicon die to the PCB copper via the leadframe, critical for predicting temperature rise under 2 A continuous load.

Does DBLS201G require special handling due to moisture sensitivity?

No - 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 SMT reflow profiles without pre-baking. This eliminates moisture-related popcorning risk and simplifies assembly for high-volume manufacturing.