Taiwan Semiconductor Corporation D2SB40H

Overview

D2SB40H from Taiwan Semiconductor is a 2A, 400V AEC-Q101 qualified standard bridge rectifier in GBL package, featuring 80A surge current capability, 10°C/W junction-to-lead thermal resistance, and UL Recognized File # E-326243 - used for AC/DC conversion in automotive-grade power adapters and lighting drivers.

For engineers reviewing the D2SB40H datasheet, D2SB40H pinout, D2SB40H application, or D2SB40H equivalent, key selection criteria include peak reverse voltage (400V), forward current rating (2A), AEC-Q101 qualification status, thermal performance (R_θJL = 10°C/W), and GBL package compatibility with high-density PCB layouts.

Technical Context

The D2SB40H integrates four silicon diodes in a single-phase full-wave bridge configuration, enabling efficient AC-to-DC rectification without external wiring. Its 400V V_RRM and 2A average forward current support operation in universal-input SMPS designs up to 150°C junction temperature.

Thermally optimized for conduction cooling, the device delivers 80A non-repetitive surge current (8.3ms half-sine) and maintains ≤1.1V forward voltage at 2A/25°C, with reverse leakage limited to 10µA at 25°C and 500µA at 125°C per diode.

Key Specifications

Pinout & Package

Package: GBL - molded plastic case with matte tin-plated leads, UL 94V-0 rated, 2.00g 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 GBU4K and DB104S, the D2SB40H uniquely combines AEC-Q101 qualification, 80A surge rating, and GBL's low-profile footprint - making it optimal for space-constrained, thermally demanding automotive and industrial rectification where reliability and transient robustness are prioritized.

Availability

D2SB40H is available at Aetrix Electronics and suitable for automotive power supplies, LED lighting drivers, and universal-input adapters requiring stable component supply and long-term lifecycle assurance.

Supply support for D2SB40H 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 automotive, industrial, and consumer markets since 1979.

The D2SB40H belongs to TSC's AEC-Q101-qualified bridge rectifier family, engineered specifically for high-reliability AC/DC front-end conversion in harsh-environment applications including automotive electronics and outdoor-rated lighting systems.

FAQ

What is the peak repetitive reverse voltage rating of the D2SB40H?

The D2SB40H has a peak repetitive reverse voltage (V_RRM) rating of 400 V. This value is explicitly defined in the Absolute Maximum Ratings table for the D2SB40H variant and ensures reliable blocking capability under worst-case AC line conditions with appropriate derating. It is not shared across the entire D2SBx series - each voltage grade is individually specified.

Is the D2SB40H qualified to AEC-Q101, and what does that mean for my design?

Yes, the D2SB40H is AEC-Q101 qualified, as confirmed by the "H" suffix in its ordering code and stated in the Ordering Information section. This means the D2SB40H has passed stress tests for automotive-grade reliability, including temperature cycling, humidity bias, and mechanical shock - making it suitable for use in non-safety-critical automotive electronics such as body control modules and infotainment power supplies.

What is the thermal resistance from junction to lead (R_θJL) for the D2SB40H, and why does it matter?

The D2SB40H has a typical junction-to-lead thermal resistance (R_θJL) of 10°C/W, per the Thermal Performance table. This parameter is critical for PCB-level thermal design because it quantifies how effectively heat transfers from the silicon die to the copper traces or heatsink via the leads - enabling accurate junction temperature estimation without requiring an external heatsink in many medium-power applications.

Does the D2SB40H have UL recognition, and what is the file number?

Yes, the D2SB40H is UL Recognized with File # E-326243, as stated in the FEATURES section. This recognition applies to the entire D2SB05–D2SB80 family and confirms compliance with UL 60747-4 for discrete semiconductors, supporting end-product safety certifications in North America without requiring additional component-level testing.

What is the forward voltage drop of the D2SB40H at 2A and 25°C?

The D2SB40H exhibits a maximum forward voltage drop (V_F) of 1.1 V per diode at I_F = 2 A and T_J = 25°C, as specified in the Electrical Specifications table. Since the device contains four diodes in bridge configuration, the total conduction drop across the output path is approximately 2.2 V under these conditions - directly impacting conduction losses and thermal load in the rectifier stage.