Taiwan Semiconductor Corporation ABS2

Overview

ABS2 from Taiwan Semiconductor is a 1A, 200V standard quad bridge rectifier in ABS package, featuring glass-passivated junctions, 30A peak surge current capability, and AEC-Q101 qualification option (ABS2H). It serves as the AC-to-DC front-end in compact off-line SMPS and LED lighting drivers where space-constrained PCB layout and thermal reliability are critical.

For engineers reviewing the ABS2 datasheet, ABS2 pinout, ABS2 application, or ABS2 equivalent, key selection factors include its 200V repetitive peak reverse voltage, 0.95V max forward voltage per diode at 0.4A, 25°C/W junction-to-lead thermal resistance, moisture sensitivity level 1 rating, and UL Recognized status (E-326854).

Technical Context

The ABS2 integrates four silicon diodes in a single-phase full-wave bridge configuration with common-cathode and common-anode terminals externally accessible. Its glass-passivated chip junction ensures stable reverse leakage (<10 µA at 25°C) and robustness against humidity-induced degradation.

Thermally, it delivers 1.0A continuous forward current when mounted on aluminum substrate, supported by R_θJL = 25°C/W and R_θJA = 80°C/W ratings. The ABS package uses UL 94V-0 molded plastic and matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance.

Key Specifications

Pinout & Package

Package: ABS - Molded plastic, UL 94V-0 rated, 4-terminal single-phase bridge configuration with marked polarity. Dimensions conform to Taiwan Semiconductor ABS outline drawing (Version M2103).

Key Features

Applications

Equivalent & Alternatives

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

Compared with GBU2K and DB102, the ABS2 offers superior space efficiency via its ABS package, certified UL recognition for safety-critical designs, and guaranteed level-1 moisture handling-making it preferred for compact, certified, and high-reliability AC/DC front-ends.

Availability

ABS2 is available at Aetrix Electronics and suitable for switching mode power supplies, LED lighting drivers, and industrial sensor power modules requiring stable component supply across production lifecycles.

Supply support for ABS2 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 ABS2 belongs to TSC's standard bridge rectifier product line, engineered for high-volume, cost-sensitive AC/DC conversion applications demanding reliability, regulatory compliance, and automated assembly readiness.

FAQ

What is the maximum continuous forward current rating for ABS2 under typical PCB conditions?

The ABS2 supports 1.0A continuous forward current when mounted on an aluminum substrate, and 0.8A on standard glass-epoxy PCBs. This rating assumes TA = 25°C and accounts for thermal resistance R_θJA = 80°C/W. For sustained operation above 70°C ambient, derating per the forward current derating curve (Fig.1) is required. The ABS2 datasheet specifies these limits explicitly in the Absolute Maximum Ratings table.

Does ABS2 have automotive qualification, and how is it designated?

Yes, the AEC-Q101 qualified version of ABS2 is designated ABS2H. It undergoes stress testing per AEC-Q101 including temperature cycling, high-temperature reverse bias, and ESD verification. The base ABS2 is not AEC-Q101 qualified; only ABS2H carries this qualification. Both share identical electrical and thermal specifications, differing only in test validation and marking.

What does the marking code 'ABS2' indicate on the device body?

The marking code 'ABS2' on the ABS2 device body identifies the specific voltage grade within the ABS2–ABS10 family, confirming a 200V repetitive peak reverse voltage (V_RRM). It is distinct from ABS4 (400V), ABS6 (600V), etc. The marking appears alongside date code (YW) and factory code (F) per Taiwan Semiconductor's marking diagram in Version M2103 of the ABS2–ABS10 datasheet.

Is ABS2 compliant with RoHS and halogen-free standards?

Yes, ABS2 is RoHS compliant and halogen-free per IEC 61249-2-21. These compliance statements are confirmed in the Features section of the official Taiwan Semiconductor ABS2–ABS10 datasheet (Version M2103). No brominated flame retardants or chlorine-based compounds are used in the molding compound or plating.

What is the junction-to-lead thermal resistance (R_θJL) of ABS2, and why does it matter?

The ABS2 has a typical junction-to-lead thermal resistance of 25°C/W. This parameter quantifies how effectively heat transfers from the silicon die to the external lead frame, enabling direct thermal coupling to PCB copper pours or heatsinks. A lower R_θJL value like 25°C/W allows higher power dissipation without exceeding +150°C junction temperature-critical for reliability in enclosed or high-ambient applications using ABS2.