Taiwan Semiconductor Corporation DBLS101GH

Overview

DBLS101GH from Taiwan Semiconductor is a 1A, 50V AEC-Q101-qualified standard bridge rectifier in DBLS package, featuring 40A peak surge current (IFSM), 1.1V max forward voltage at 1A, and 2µA max reverse leakage at 25°C. It serves as AC-to-DC conversion core in compact power supplies for automotive-grade lighting and adapters.

For engineers reviewing the DBLS101GH datasheet, DBLS101GH pinout, DBLS101GH application, or DBLS101GH equivalent, key selection criteria include VRRM=50V, IFSM=40A, AEC-Q101 qualification, UL 94V-0 molded case, and tape-and-reel packaging with 1,500 units per reel.

Technical Context

This quad-configuration bridge rectifier integrates four silicon diodes in a single DBLS surface-mount package with common-cathode/common-anode topology. Its thermal design supports 15°C/W junction-to-lead resistance and operates across –55°C to +150°C junction temperature range.

Electrical behavior is defined by pulse-tested parameters: VF measured at 1A/25°C (PW=0.3ms), IR tested at rated VR with 30ms pulses, and CJ=25pF at 1MHz/4V reverse bias - all specified per diode within the bridge.

Key Specifications

Pinout & Package

Package: DBLS - Surface-mount, molded plastic case meeting UL 94V-0 flammability rating; matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with GBU1K and GBU1A, DBLS101GH uniquely combines 50V rating, 40A surge capability, AEC-Q101 qualification, and compact DBLS footprint - making it optimal for space-limited, automotive-qualified, low-voltage AC/DC front ends.

Availability

DBLS101GH is available at Aetrix Electronics and suitable for automotive LED lighting, USB-C adapters, and industrial control panel power supplies requiring stable component supply and long-term production continuity.

Supply support for DBLS101GH 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, automotive, and consumer markets since 1979.

The DBLS series was developed specifically for high-reliability, surface-mount bridge rectification in space-constrained power supplies - emphasizing AEC-Q101 compliance, UL safety recognition, and thermal efficiency in compact molded packages.

FAQ

What does the "H" suffix in DBLS101GH signify?

The "H" suffix in DBLS101GH explicitly denotes AEC-Q101 qualification. This means the DBLS101GH has undergone rigorous stress testing-including temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge (ESD)-to meet automotive-grade reliability standards. Unlike the base DBLS101G, the DBLS101GH is certified for use in automotive electronics such as lighting modules and infotainment power supplies.

Is DBLS101GH compatible with lead-free reflow soldering processes?

Yes, DBLS101GH is fully compatible with standard lead-free reflow profiles. Its matte tin-plated leads meet J-STD-002 solderability requirements, and its moisture sensitivity level is rated Level 1 per J-STD-020 - meaning no baking is required prior to assembly. The DBLS101GH's UL 94V-0 molding compound also withstands peak reflow temperatures up to 260°C.

How does the DBLS101GH's thermal performance compare to through-hole bridge rectifiers?

The DBLS101GH achieves RθJL = 15°C/W, significantly better than typical through-hole bridges (e.g., 30–40°C/W), due to its low-profile DBLS package and optimized internal leadframe design. This enables more efficient heat transfer to the PCB copper, allowing higher continuous current operation in thermally dense layouts without additional heatsinking - a key advantage over legacy KBP or WOB packages.

Can DBLS101GH replace DBLS101G in existing designs?

Yes, DBLS101GH is a direct drop-in replacement for DBLS101G in terms of pinout, package, electrical ratings, and thermal characteristics. The only functional difference is AEC-Q101 qualification - the DBLS101GH adds automotive reliability validation without altering any electrical or mechanical specifications. No PCB or schematic changes are needed when upgrading from DBLS101G to DBLS101GH.

What is the marking code on the DBLS101GH device body?

The DBLS101GH is marked "DBLS101G" on the top surface, followed by "G" (indicating green compound), a date code (e.g., "2325" for week 25 of 2023), and a factory code (e.g., "F"). This marking aligns with Taiwan Semiconductor's standard DBLS series labeling and matches the ordering code - confirming authenticity and traceability for production verification and counterfeit mitigation.