Taiwan Semiconductor Corporation DBLS106G C1G

Overview

DBLS106G from Taiwan Semiconductor is a 1A, 800V repetitive peak reverse voltage (VRRM) standard quad bridge rectifier in DBLS surface-mount package, featuring 40A peak forward surge current (IFSM), 15°C/W junction-to-lead thermal resistance, and AEC-Q101 qualification option. It serves as the AC/DC input stage in compact offline power supplies for LED drivers and industrial adapters.

For engineers reviewing the DBLS106G datasheet, DBLS106G pinout, DBLS106G application, or DBLS106G equivalent, key selection criteria include VRRM margin for 230VAC mains surge tolerance, IFSM capability for cold-start inrush handling, thermal performance under PCB-constrained layouts, and RoHS/halogen-free compliance for automotive-grade designs.

Technical Context

The DBLS106G implements a monolithic quad-diode bridge configuration with common-cathode and common-anode terminals internally connected to form full-wave rectification. Its 800V VRRM rating targets 230VAC-derived inputs with ≥2× safety margin against line transients.

Thermal design relies on low R_θJL (15°C/W) for efficient heat transfer to PCB copper, while the DBLS package's UL 94V-0 molding compound and matte tin-plated leads ensure solderability and flammability compliance per J-STD-002 and JESD 201 Class 2.

Key Specifications

Pinout & Package

DBLS106G uses the DBLS surface-mount package: 4-pin, gull-wing leaded, 7.1 × 6.2 × 2.3 mm body, UL 94V-0 molded plastic case with matte tin-plated leads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with GBU4K and MB10F, the DBLS106G delivers optimal balance of SMT manufacturability, thermal performance (15°C/W R_θJL), and 800V-rated robustness for cost-sensitive 230VAC consumer and industrial power supplies.

Availability

DBLS106G is available at Aetrix Electronics and suitable for switching mode power supplies, LED lighting drivers, and industrial AC/DC adapters requiring stable component supply, RoHS compliance, and AEC-Q101-qualified variants.

Supply support for DBLS106G 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, specializing in rectifiers, TVS diodes, MOSFETs, and bipolar transistors.

The DBLS series was developed specifically for high-density, thermally efficient AC/DC front-end rectification in space-constrained power supplies targeting industrial, lighting, and automotive auxiliary power applications.

FAQ

What is the maximum repetitive peak reverse voltage (VRRM) of the DBLS106G?

The DBLS106G has a VRRM of 800 V, as confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version P2103). This rating defines the highest reverse voltage the device can block repeatedly without breakdown and is critical for ensuring safe operation in 230VAC-derived power supplies where transient surges may exceed nominal line voltage. The DBLS106G is part of the DBLS101G–DBLS107G family, with VRRM scaling across variants from 50V to 1000V.

Does the DBLS106G have AEC-Q101 qualification?

The DBLS106G itself is not AEC-Q101 qualified, but its variant DBLS106GH is explicitly listed in the Ordering Information section as AEC-Q101 qualified. The "H" suffix denotes qualification per the AEC-Q101 stress test standard for discrete semiconductors, making DBLS106GH suitable for automotive under-hood and infotainment power supply applications. Standard DBLS106G remains appropriate for industrial and commercial use.

What is the forward voltage drop (VF) specification for the DBLS106G at rated current?

The DBLS106G specifies a maximum forward voltage of 1.1 V per diode at IF = 1 A and TJ = 25°C, as stated in the Electrical Specifications table. Since it is a full-wave bridge, the total conduction drop across the conducting path is approximately 2.2 V under these conditions. This value is measured using a 0.3 ms pulse width to minimize self-heating effects during testing.

What is the peak forward surge current (IFSM) rating for the DBLS106G?

The DBLS106G has an IFSM rating of 40 A for an 8.3 ms single half-sine wave surge, as documented in the Absolute Maximum Ratings table. This rating applies to the entire bridge and reflects its ability to survive short-duration inrush currents-such as those occurring during cold-start charging of bulk input capacitors-without permanent degradation. The adjacent DBLS105G and lower-voltage variants specify 30 A IFSM.

What package type does the DBLS106G use and what are its key mechanical features?

The DBLS106G uses the DBLS surface-mount package: a 4-pin gull-wing leaded outline measuring 7.1 × 6.2 × 2.3 mm, with UL 94V-0 compliant molding compound and matte tin-plated leads that meet J-STD-002 solderability requirements. It also passes JESD 201 Class 2 whisker testing and carries a moisture sensitivity level (MSL) of 1, eliminating the need for baking prior to reflow soldering.