Taiwan Semiconductor Corporation DBLS102G C1G

Overview

DBLS102G from Taiwan Semiconductor is a 1A, 100V rated standard bridge rectifier in DBLS surface-mount package, featuring 40A peak surge current (IFSM), 1.1V max forward voltage at 1A, and 2µA max reverse leakage at 25°C - used in AC/DC front-end stages of compact switching power supplies.

For engineers reviewing the DBLS102G datasheet, DBLS102G pinout, DBLS102G application, or DBLS102G equivalent, key selection criteria include VRRM=100V, IF=1A, IFSM=40A, RθJA=40°C/W, and AEC-Q101 qualification availability for automotive-grade reliability validation.

Technical Context

The DBLS102G integrates four silicon diodes in a single-phase full-wave bridge configuration with common-cathode/common-anode topology. Its DBLS package supports automated SMT assembly and provides 15°C/W junction-to-lead thermal resistance for efficient heat transfer to PCB copper.

Rated for continuous 1A average forward current and capable of withstanding 40A non-repetitive surge (8.3ms half-sine), it operates across -55°C to +150°C junction temperature range and meets UL 94V-0 flammability and J-STD-020 moisture sensitivity level 1 requirements.

Key Specifications

Pinout & Package

Package: DBLS - surface-mount, molded plastic quad-flat package with matte tin-plated leads, UL 94V-0 rated, 0.360g 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 MB10F, the DBLS102G uniquely balances 100V/1A/40A ratings with UL recognition, AEC-Q101 availability, and compact DBLS footprint - making it optimal for space-constrained, certified, and automotive-adjacent power supplies.

Availability

DBLS102G is available at Aetrix Electronics and suitable for switching mode power supplies, USB adapters, and LED lighting applications requiring stable component supply and consistent parametric performance across production lots.

Supply support for DBLS102G 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 for high-reliability, surface-mount AC/DC rectification in space-constrained power supplies - emphasizing thermal efficiency, surge robustness, and regulatory compliance (UL, AEC-Q101, RoHS).

FAQ

What is the peak repetitive reverse voltage rating of the DBLS102G?

The DBLS102G has a repetitive peak reverse voltage (VRRM) rating of 100 V. This value is confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version P2103). It defines the maximum AC voltage the device can block in reverse bias without entering avalanche breakdown. Exceeding this voltage risks permanent damage, especially under transient conditions.

Does the DBLS102G have AEC-Q101 qualification?

The DBLS102G itself is not automatically AEC-Q101 qualified; however, the AEC-Q101-qualified version is explicitly offered as DBLS102GH in the ordering information. The "H" suffix denotes qualification per AEC-Q101 stress test standards. For automotive applications requiring qualification, DBLS102GH must be specified - DBLS102G without the "H" is intended for industrial and commercial use.

What is the forward voltage drop of the DBLS102G at rated current?

The DBLS102G exhibits a maximum forward voltage drop (VF) of 1.1 V per diode at IF = 1 A and TJ = 25°C, as specified in the Electrical Specifications table. Since it is a full-wave bridge, two diodes conduct simultaneously in series during each half-cycle, resulting in ~2.2 V total conduction drop under those conditions - a key factor in thermal design and efficiency calculation.

Can the DBLS102G replace the DBLS101G in an existing design?

Yes, the DBLS102G can directly replace the DBLS101G because both share identical package (DBLS), pinout, IF=1A rating, and thermal characteristics. The only difference is VRRM: DBLS101G is rated for 50 V, while DBLS102G is rated for 100 V. Substituting DBLS102G provides increased reverse voltage margin without layout or thermal changes - beneficial for designs subject to line transients or wider input ranges.

What is the moisture sensitivity level (MSL) of the DBLS102G?

The DBLS102G has a moisture sensitivity level (MSL) of Level 1 per J-STD-020, meaning it is not sensitive to moisture-induced damage during reflow soldering. No floor life limitation or pre-bake requirement applies - the device can be mounted directly from dry pack without special handling, simplifying SMT line operations and reducing manufacturing overhead.