Taiwan Semiconductor Corporation HDBLS101G C1G

Overview

HDBLS101G from Taiwan Semiconductor is a 1 A, 50 V repetitive peak reverse voltage (V_RRM) high-efficiency quad bridge rectifier in DBLS package, featuring 50 A peak forward surge current (I_FSM), 15 °C/W junction-to-lead thermal resistance, and AEC-Q101 qualification option - used in compact AC/DC front-end stages of LED lighting drivers and low-power adapters.

For engineers reviewing the HDBLS101G datasheet, HDBLS101G pinout, HDBLS101G application, or HDBLS101G equivalent, key selection criteria include its 1.0 V max forward voltage at 1 A, 5 µA max reverse leakage at 25 °C, 50 ns reverse recovery time, UL Recognized status (E-326854), and DBLS surface-mount footprint compatibility with space-constrained PCB layouts.

Technical Context

The HDBLS101G integrates four silicon diodes in a single-phase full-wave bridge configuration, optimized for low conduction loss and fast switching in offline rectification. Its 50 V V_RRM rating targets low-voltage input SMPS and universal-input lighting applications where margin against line transients is moderate but reliability under surge remains critical.

Thermally, it delivers R_θJL = 15 °C/W and R_θJA = 40 °C/W, enabling 1 A continuous operation without forced air in typical 2-layer FR-4 PCBs. The DBLS package uses matte tin-plated leads compliant with J-STD-002 and JESD201 Class 2 whisker testing.

Key Specifications

Pinout & Package

Package: DBLS - Surface-mount, molded plastic case with 4 external terminals (AC1, AC2, +, –), UL 94V-0 rated, 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 GBU4A and MB1S, the HDBLS101G offers superior thermal performance (R_θJL = 15 °C/W), UL recognition, and optional AEC-Q101 qualification - making it preferred for space-constrained, safety-certified, and thermally demanding designs where SMT assembly is standard.

Availability

HDBLS101G is available at Aetrix Electronics and suitable for LED lighting drivers, low-power adapters, and industrial control power supplies requiring stable component supply, consistent parametric performance, and long-term sourcing continuity.

Supply support for HDBLS101G 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 HDBLS series belongs to TSC's high-efficiency bridge rectifier product line, engineered specifically for compact, high-reliability AC/DC conversion in cost-sensitive yet thermally constrained applications such as LED lighting and portable power adapters.

FAQ

What is the maximum junction temperature rating for the HDBLS101G?

The HDBLS101G has a maximum junction temperature (T_J) of +150 °C, with operational range from –55 °C to +150 °C. This rating enables reliable operation in enclosed LED driver housings and adapter enclosures where ambient temperatures may reach 85 °C, provided thermal design meets R_θJL = 15 °C/W requirements. Derating curves in the datasheet confirm 1 A continuous current is sustainable up to 100 °C ambient with adequate PCB copper area.

Does the HDBLS101G have UL recognition, and what does that mean for end-product certification?

Yes, the HDBLS101G is UL Recognized under File # E-326854. This means the component itself has been evaluated by UL for construction, flammability (UL 94V-0), and electrical safety per UL 60747-4, allowing designers to leverage this recognition toward end-equipment compliance with standards like IEC/EN 62368-1 without performing additional component-level tests - significantly accelerating safety certification timelines for LED drivers and adapters using the HDBLS101G.

Is the HDBLS101G pin-compatible with other DBLS-series rectifiers like HDBLS102G or HDBLS103G?

Yes, all HDBLS101G through HDBLS107G share identical DBLS package dimensions, terminal layout, and pinout - only the V_RRM rating differs (50 V to 1000 V). This allows direct substitution within the same PCB footprint when redesigning for higher input voltage ranges, provided thermal and surge margins remain acceptable. No layout change is needed when upgrading from HDBLS101G to HDBLS102G in a 100 V AC application, for example.

What is the reverse recovery time (t_rr) specification for the HDBLS101G, and how does it impact EMI performance?

The HDBLS101G has a maximum reverse recovery time (t_rr) of 50 ns under specified test conditions (I_F = 0.5 A, I_R = 1.0 A, I_rr = 0.25 A). This fast recovery minimizes high-frequency ringing during turn-off transitions in SMPS circuits, directly reducing conducted and radiated EMI. In practice, this allows simpler, lower-cost EMI filters in 5–12 W adapters using the HDBLS101G compared to slower bridges with t_rr > 100 ns.

Can the HDBLS101G be used in automotive applications, and what qualification supports that use?

The base HDBLS101G is not AEC-Q101 qualified, but the pin-identical HDBLS101GH variant is explicitly qualified to AEC-Q101. That qualification includes stress testing for temperature cycling, high-temperature reverse bias, and unbiased high-humidity operating life - validating suitability for non-safety-critical automotive cabin applications such as infotainment power supplies and interior lighting. For automotive use, specify HDBLS101GH, not HDBLS101G.