Taiwan Semiconductor Corporation D2SB20

Overview

D2SB20 from Taiwan Semiconductor is a 2A, 200V repetitive peak reverse voltage (V_RRM) standard bridge rectifier in GBL package, configured as a quad diode arrangement for full-wave AC-to-DC conversion. It delivers 80A surge current capability (I_FSM), operates up to 150°C junction temperature, and is widely used in offline AC/DC adapters and compact switching mode power supplies.

For engineers reviewing the D2SB20 datasheet, D2SB20 pinout, D2SB20 application, or D2SB20 equivalent, key selection factors include its 200V V_RRM, 1.1V max forward voltage at 2A, 10µA max reverse leakage at 25°C, UL Recognized status (E-326243), and AEC-Q101-qualified variant availability (D2SB20H).

Technical Context

The D2SB20 integrates four silicon PN-junction diodes in a single-phase bridge configuration, enabling full-wave rectification without external interconnection. Its GBL package provides high case dielectric strength and meets UL 94V-0 flammability rating with matte tin-plated leads compliant to J-STD-002 solderability.

Thermally, it features 10°C/W junction-to-lead (R_θJL) and 47°C/W junction-to-ambient (R_θJA) resistance. Electrical behavior is characterized by 1.1V max forward voltage per diode at 2A/25°C and ≤10µA reverse current per diode at rated 200V and 25°C.

Key Specifications

Pinout & Package

Package: GBL - Molded plastic body with 4 axial leads arranged in standard bridge rectifier layout (AC1, AC2, +, −); UL 94V-0 rated, 2.00g typical weight, matte tin-plated leads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with GBU2K and DF02M, the D2SB20 offers superior surge robustness (80A vs. 60A/50A) and lower thermal resistance in the same GBL footprint, making it optimal for compact, high-reliability AC/DC front-ends where both size and transient resilience matter.

Availability

D2SB20 is available at Aetrix Electronics and suitable for AC/DC adapters, LED drivers, and industrial power supplies requiring stable component supply, consistent parametric performance across production lots, and long-term lifecycle support.

Supply support for D2SB20 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 D2SB series belongs to TSC's standard bridge rectifier product line, engineered for high-volume, cost-effective AC/DC conversion in space-constrained, thermally demanding applications-emphasizing reliability, safety certification readiness, and manufacturability.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for the D2SB20?

The D2SB20 has a maximum repetitive peak reverse voltage (V_RRM) of 200 V. This value is explicitly defined in the Absolute Maximum Ratings table for the D2SB20 variant within the D2SB05–D2SB80 family. It ensures safe blocking of reverse voltage transients in standard 120/230 VAC input circuits with appropriate safety margin. The D2SB20 must not be operated beyond this rating under any condition.

Is the D2SB20 available in an AEC-Q101 qualified version?

Yes, the AEC-Q101 qualified version of the D2SB20 is designated as D2SB20H. Per the Ordering Information section, the "H" suffix indicates qualification to AEC-Q101 Rev D for automotive applications. This variant undergoes additional stress testing including temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge (ESD), while maintaining identical electrical and mechanical specifications as the standard D2SB20.

What package type does the D2SB20 use, and what are its key mechanical attributes?

The D2SB20 uses the GBL package-a surface-mount compatible, molded plastic body with four axial leads. Key mechanical attributes include UL 94V-0 flammability rating, matte tin-plated leads compliant to J-STD-002, polarity marking per device top, and approximate weight of 2.00 g. Dimensions are standardized per the Package Outline Drawings in Version K2103 of the datasheet.

What is the forward voltage (V_F) specification for the D2SB20 at rated current?

The D2SB20 has a maximum forward voltage (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. This value is measured under pulsed conditions (PW = 0.3 ms) to minimize self-heating. At elevated junction temperatures or higher currents, V_F will increase slightly due to the negative temperature coefficient of silicon diodes.

Does the D2SB20 have UL recognition, and if so, what is the file number?

Yes, the D2SB20 is UL Recognized under File # E-326243. This recognition applies to the entire D2SB05–D2SB80 family and confirms compliance with UL 60950-1 and UL 62368-1 standards for insulation, flammability, and construction. UL recognition simplifies end-product safety certification for power supplies using the D2SB20 as the primary rectifier.