Taiwan Semiconductor Corporation 3A100

Overview

3A100 from Taiwan Semiconductor is a 1000V, 3A standard silicon rectifier diode in DO-204AC (DO-15) package, featuring glass passivated junction, 1.1V max forward voltage at 3A/25°C, 120A surge capability, and AEC-Q101 qualification option. It serves as a primary AC/DC input rectifier in high-voltage switching power supplies.

For engineers reviewing the 3A100 datasheet, 3A100 pinout, 3A100 application, or 3A100 equivalent, key selection criteria include peak reverse voltage rating (1000V), thermal resistance (R_θJL = 17°C/W), junction capacitance (27pF), reverse leakage (≤5µA @ 25°C), and DO-15 mechanical compatibility for board-level replacement and thermal management validation.

Technical Context

The 3A100 operates as a single-die, unidirectional standard rectifier with cathode-band polarity marking. Its glass-passivated PN junction ensures stable reverse blocking up to 1000V and low leakage across -55°C to +150°C junction temperature range.

Thermally, it delivers R_θJL = 17°C/W and R_θJA = 52°C/W, enabling reliable conduction at 3A average forward current without forced cooling in ambient temperatures ≤75°C. The 27pF junction capacitance supports operation in 60Hz–1MHz applications without significant switching loss penalty.

Key Specifications

Pinout & Package

Package: DO-204AC (DO-15), axial lead, glass-passivated silicon die, cathode indicated by band. Leads are pure tin plated, solderable per J-STD-002, UL 94V-0 molded compound.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH3L06S and MUR3100, the 3A100 offers optimal balance of 1000V rating, 1.1V low V_F, DO-15 compatibility, and AEC-Q101 availability-making it preferred for space-constrained, thermally sensitive, and automotive-qualified 50/60Hz rectification tasks.

Availability

3A100 is available at Aetrix Electronics and suitable for industrial power supplies, automotive DC-DC converters, and solar microinverters requiring stable component supply with consistent DO-204AC mechanical form factor and 1000V blocking capability.

Supply support for 3A100 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, specializing in rectifiers, TVS diodes, MOSFETs, and power ICs since 1979.

The 3A100 belongs to TSC's standard rectifier family designed specifically for high-voltage, high-reliability AC/DC front-end conversion in industrial, automotive, and renewable energy systems where long-term stability and thermal resilience are critical.

FAQ

What is the maximum junction temperature rating for the 3A100?

The 3A100 has a maximum junction temperature (T_JMAX) of +150°C, verified across its full operating range from -55°C to +150°C. This rating enables use in high-ambient environments such as enclosed power supplies or under-hood automotive locations. Derating curves confirm sustained 3A operation up to 75°C lead temperature, and the 3A100 maintains specified electrical parameters-including 5µA max reverse leakage at 25°C-within this thermal envelope.

Is the 3A100 pin-compatible with legacy 1N54xx series diodes?

Yes, the 3A100 uses the DO-204AC (DO-15) package with identical mechanical dimensions, lead spacing, and cathode-band polarity marking as the 1N54xx series. Its 3A current rating and 1000V V_RRM exceed 1N5408 (1000V/3A) while offering lower V_F (1.1V vs. 1.2V) and improved thermal resistance (17°C/W vs. ~20°C/W), making the 3A100 a direct mechanical and functional upgrade for existing 1N54xx layouts.

Does the 3A100 have AEC-Q101 qualification?

The 3A100 is available in an AEC-Q101 qualified version denoted by the "H" suffix (e.g., 3A100H). This variant undergoes full stress testing per AEC-Q101 Rev D, including temperature cycling, high-temperature operating life, and biased HAST. Standard 3A100 units (without "H") are not AEC-Q101 certified; only the explicitly marked 3A100H meets automotive reliability requirements.

What is the typical junction capacitance of the 3A100 and how does it affect circuit performance?

The 3A100 exhibits a typical junction capacitance (C_J) of 27pF measured at 1MHz and 4.0V reverse bias. This value remains stable across operating voltage and temperature, minimizing capacitive coupling noise in high-impedance feedback paths. In 50/60Hz rectification, C_J has negligible impact on efficiency; however, in higher-frequency auxiliary supplies or snubber networks, the 27pF value helps maintain predictable EMI behavior without requiring additional compensation.

How does the 3A100's forward voltage compare to other 3A/1000V rectifiers?

The 3A100 specifies a maximum forward voltage (V_F) of 1.1V at 3A and 25°C-lower than industry-standard alternatives like MUR3100 (1.25V) and BYV26E (1.15V). This 0.15V reduction lowers conduction loss by ~135mW at full load, directly improving thermal margin and system efficiency. The 3A100 achieves this via optimized silicon doping and glass passivation, confirmed in TSC's B2105 datasheet revision.