Taiwan Semiconductor Corporation DBLS105GHC1G

Overview

DBLS105GHC1G from Taiwan Semiconductor is a 1A, 600V repetitive peak reverse voltage (VRRM) standard bridge rectifier in DBLS surface-mount package, featuring 40A peak forward surge current (IFSM), 1.1V max forward voltage per diode at 1A, and AEC-Q101 qualification for automotive-grade reliability. It serves as the AC-to-DC input stage in compact power supplies.

For engineers reviewing the DBLS105GHC1G datasheet, DBLS105GHC1G pinout, DBLS105GHC1G application, or DBLS105GHC1G equivalent, key selection criteria include VRRM margin for line-voltage transients, IFSM capability for cold-start surges, thermal resistance (RθJA = 40°C/W), and AEC-Q101 compliance for under-hood or infotainment power designs.

Technical Context

This quad-configuration bridge rectifier integrates four silicon diodes in a single DBLS molded-plastic package with matte tin-plated leads. Its 600V VRRM rating targets universal-input (85–265VAC) SMPS front-ends where transient clamping and RMS voltage derating are critical.

Thermal performance is defined by RθJL = 15°C/W (junction-to-lead) and RθJA = 40°C/W (junction-to-ambient), enabling 1A continuous operation up to +125°C ambient when mounted on ≥1 cm² copper area. Reverse leakage remains ≤2 µA at 25°C and ≤100 µA at 125°C at rated VR.

Key Specifications

Pinout & Package

Package: DBLS - Surface-mount, 4-terminal molded plastic case (UL 94V-0), 0.360g weight, matte tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with GBU6K and DF08MA, DBLS105GHC1G uniquely combines 1A rating, 40A surge capability, AEC-Q101 qualification, and surface-mount DBLS packaging-making it optimal for space-constrained, automotive-eligible, and high-reliability AC/DC front-ends.

Availability

DBLS105GHC1G is available at Aetrix Electronics and suitable for switching mode power supplies, LED lighting drivers, and automotive infotainment systems requiring stable component supply, AEC-Q101 assurance, and consistent DBLS package delivery.

Supply support for DBLS105GHC1G 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 semiconductor manufacturer specializing in discrete power devices, including rectifiers, TVS diodes, and MOSFETs, with global distribution and AEC-Q101 validation capability.

DBLS105GHC1G belongs to TSC's DBLS-series standard bridge rectifier family, engineered for high-volume, cost-sensitive AC/DC conversion in automotive, industrial, and consumer power applications where reliability, thermal performance, and SMT compatibility are essential.

FAQ

What is the peak repetitive reverse voltage rating of DBLS105GHC1G?

The DBLS105GHC1G has a repetitive peak reverse voltage (VRRM) rating of 600 V. This value is specified per the manufacturer's datasheet and reflects the maximum allowable reverse voltage the device can block repeatedly without breakdown. It corresponds to a 420 V RMS input capability, making DBLS105GHC1G suitable for universal-input (85–265 VAC) power supplies with appropriate safety margins.

Is DBLS105GHC1G qualified for automotive applications?

Yes, DBLS105GHC1G is AEC-Q101 qualified, as indicated by the "H" suffix in its ordering code. This certification confirms that the device has passed rigorous stress tests-including temperature cycling, high-temperature reverse bias, and mechanical shock-required for automotive electronic components. DBLS105GHC1G is therefore approved for use in non-safety-critical automotive systems such as infotainment, body control, and lighting modules.

What does the "C1G" suffix mean in DBLS105GHC1G?

The "C1G" suffix in DBLS105GHC1G denotes packaging and environmental compliance: "C1" indicates tape-and-reel packaging with 1,500 units per reel, and "G" signifies RoHS-compliant, halogen-free construction per IEC 61249-2-21. This matches TSC's standard ordering nomenclature for the DBLS series and confirms DBLS105GHC1G meets modern environmental and assembly requirements.

What is the maximum forward voltage drop for DBLS105GHC1G at rated current?

At 1 A forward current and 25°C junction temperature, DBLS105GHC1G exhibits a maximum forward voltage drop of 1.1 V per diode. Since the DBLS105GHC1G is a full-bridge configuration, the total conduction path includes two diodes in series, resulting in a worst-case forward drop of 2.2 V across the bridge. This value directly impacts conduction losses and thermal design in the application.

How does the thermal resistance of DBLS105GHC1G affect PCB layout?

DBLS105GHC1G has a junction-to-ambient thermal resistance (RθJA) of 40°C/W. To maintain safe junction temperatures at 1 A continuous current, the PCB must provide adequate copper area-typically ≥1 cm² of 2-oz copper connected to both ~AC and ±DC terminals-and consider airflow. Layout should avoid thermal isolation; thermal vias under the leads improve heat spreading, especially in enclosed or high-ambient environments where DBLS105GHC1G operates near its 150°C TJ limit.