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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

Taiwan Semiconductor Corporation 2A03G-T

Name: 2A03G-T
Brand: Taiwan Semiconductor Corporation
SKU: 2A03G-T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2A03G-T

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-204AC, DO-15, Axial

Datasheet:: 2A03G-T.pdf

Description:: 2A, 200V, STANDARD RECTIFIER

Quantity:: RFQ Add To RFQ list

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Inventory:7,974

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Product details

Overview

2A03G-T from Taiwan Semiconductor is a 2 A, 200 V glass-passivated standard silicon rectifier diode in DO-204AC (DO-15) package, featuring 1.0 V max forward voltage at 2 A and 70 A surge capability-used in DC-DC converters and switching inverters where compact, reliable AC/DC conversion is required.

For engineers reviewing the 2A03G-T datasheet, 2A03G-T pinout, 2A03G-T application, or 2A03G-T equivalent, key selection criteria include repetitive peak reverse voltage (200 V), forward current rating (2 A), thermal resistance (R_θJL = 25 °C/W), and RoHS/halogen-free compliance for industrial power supply designs.

Technical Context

The 2A03G-T is a single-die, axial-leaded standard rectifier optimized for general-purpose and switching-mode power conversion. Its glass-passivated junction ensures stable reverse leakage (<5 µA @ 25°C) and robust surge tolerance (70 A I_FSM, 8.3 ms half-sine).

Thermally, it delivers R_θJL = 25 °C/W and R_θJA = 60 °C/W in DO-204AC mounting, supporting continuous operation up to T_J = 150°C with derating above 75°C ambient per the forward current curve.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	200 V - Maximum non-repetitive reverse voltage the device blocks without breakdown
I_F	2 A - Continuous average forward current under specified thermal conditions
I_FSM	70 A - Peak non-repetitive surge current (8.3 ms half-sine) for transient overload handling
V_F (max)	1.0 V @ 2 A, 25°C - Forward conduction loss directly impacts efficiency in low-voltage output stages
T_J (max)	+150°C - Maximum junction temperature enabling operation in high-ambient industrial environments
R_θJL	25 °C/W - Junction-to-lead thermal resistance critical for heatsinkless PCB-level thermal design
C_J	15 pF @ 4 V - Junction capacitance affecting high-frequency switching noise and EMI behavior

Pinout & Package

Package: DO-204AC (DO-15), axial-leaded, glass-passivated silicon rectifier with cathode band marking and pure tin-plated leads compliant with J-STD-002 solderability.

Pin/Terminal	Circuit Role	Design Meaning
Anode (Lead 1)	Forward current entry point	Connected to AC input or transformer secondary; polarity must align with circuit topology
Cathode (Lead 2)	Forward current exit / reverse blocking terminal	Marked by band; ties to positive rail in bridge or half-wave configurations

Key Features

Feature	Design Value
Glass-passivated junction	Enables stable long-term reverse leakage performance and humidity resistance without epoxy encapsulation defects
Low V_F (1.0 V max)	Reduces conduction loss in 3.3–12 V output DC-DC stages, improving system efficiency by ~0.5–1.2% vs. higher-V_F alternatives
70 A I_FSM	Supports robust startup and fault-current handling in offline SMPS without external fusing
RoHS + halogen-free	Meets IEC 61249-2-21 and global environmental compliance requirements for industrial and consumer end equipment

Applications

AC-DC Adapter Power Supply	Industrial DC-DC Converter
Use Scenario: 230 VAC input rectification feeding a flyback controller in wall-wart adapters. IC Role / Device Role / Timing Role: Primary-side standard rectifier converting AC line to unregulated DC bus. Use Value: 200 V V_RRM provides 2× safety margin over 100 VAC peak; 1.0 V V_F minimizes heat rise in confined enclosures.	Use Scenario: Output rectification in isolated 24 V → 5 V DC-DC modules for PLC I/O modules. IC Role / Device Role / Timing Role: Secondary-side freewheeling rectifier in synchronous or quasi-resonant topologies. Use Value: 70 A I_FSM withstands load dump transients; DO-15 footprint enables manual rework and automated placement.
Switching Inverter Auxiliary Rail	General-Purpose Board-Level Rectification
Use Scenario: Generating isolated 15 V bias supply for gate drivers in 3-phase motor inverters. IC Role / Device Role / Timing Role: Low-power auxiliary rectifier in flyback or forward converter auxiliary windings. Use Value: R_θJL = 25 °C/W allows direct lead-mount thermal path to copper pour, eliminating need for thermal vias.	Use Scenario: Reverse-polarity protection and ESD clamp on 12 V sensor interface lines. IC Role / Device Role / Timing Role: Unidirectional current path enforcer and transient suppressor. Use Value: 5 µA max I_R at 25°C ensures negligible standby current; DO-15 form factor fits legacy through-hole layouts.

AC-DC Adapter Power Supply

Industrial DC-DC Converter

Use Scenario: 230 VAC input rectification feeding a flyback controller in wall-wart adapters.

IC Role / Device Role / Timing Role: Primary-side standard rectifier converting AC line to unregulated DC bus.

Use Value: 200 V V_RRM provides 2× safety margin over 100 VAC peak; 1.0 V V_F minimizes heat rise in confined enclosures.

Use Scenario: Output rectification in isolated 24 V → 5 V DC-DC modules for PLC I/O modules.

IC Role / Device Role / Timing Role: Secondary-side freewheeling rectifier in synchronous or quasi-resonant topologies.

Use Value: 70 A I_FSM withstands load dump transients; DO-15 footprint enables manual rework and automated placement.

Switching Inverter Auxiliary Rail

General-Purpose Board-Level Rectification

Use Scenario: Generating isolated 15 V bias supply for gate drivers in 3-phase motor inverters.

IC Role / Device Role / Timing Role: Low-power auxiliary rectifier in flyback or forward converter auxiliary windings.

Use Value: R_θJL = 25 °C/W allows direct lead-mount thermal path to copper pour, eliminating need for thermal vias.

Use Scenario: Reverse-polarity protection and ESD clamp on 12 V sensor interface lines.

IC Role / Device Role / Timing Role: Unidirectional current path enforcer and transient suppressor.

Use Value: 5 µA max I_R at 25°C ensures negligible standby current; DO-15 form factor fits legacy through-hole layouts.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH2R02U (STMicroelectronics)	2 A, 200 V ultrafast recovery (t_rr = 35 ns); higher cost; TO-220AC package	Better for high-frequency (>100 kHz) SMPS where reverse recovery loss dominates	Select when t_rr < 50 ns is required; not drop-in due to TO-220 footprint and thermal profile
1N4003G (ON Semiconductor)	1.5 A, 200 V standard recovery; DO-41 package; VF ≈ 1.1 V @ 1 A	Limited to lower-current applications; less surge margin (I_FSM = 50 A)	Acceptable for ≤1.5 A loads with relaxed surge requirements; requires PCB pad revision for DO-41

Compared with STTH2R02U and 1N4003G, the 2A03G-T uniquely balances 2 A continuous rating, 70 A surge headroom, DO-15 manufacturability, and 1.0 V V_F-making it optimal for cost-sensitive, medium-frequency industrial power supplies where thermal and surge robustness outweigh ultrafast recovery needs.

Availability

2A03G-T is available at Aetrix Electronics and suitable for DC-DC converters, switching mode inverters, and general-purpose rectification requiring stable component supply across automotive aftermarket, industrial control, and consumer power adapter programs.

Supply support for 2A03G-T 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 Taiwanese manufacturer specializing in discrete semiconductors, including rectifiers, TVS diodes, and MOSFETs, with ISO/TS 16949 and IATF 16949 certification.

The 2A01G-T to 2A07G-T series was designed for cost-effective, high-reliability AC/DC and DC/DC power conversion in industrial, computing, and consumer applications-emphasizing thermal robustness, surge resilience, and environmental compliance.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) of the 2A03G-T?

The 2A03G-T has a V_RRM of 200 V, confirmed in the Absolute Maximum Ratings table of the official TSC datasheet (Version B2105). This rating defines the highest reverse voltage the diode can block repeatedly without breakdown, making it suitable for 100 VAC-derived circuits with appropriate safety margins. Exceeding this value risks irreversible avalanche failure.

Does the 2A03G-T have a specified forward voltage (V_F) at full rated current?

Yes-the 2A03G-T specifies a maximum forward voltage of 1.0 V at I_F = 2 A and T_J = 25°C, per the Electrical Specifications table. This value is measured under pulsed conditions (PW = 0.3 ms) and reflects typical conduction loss in power supply output stages. At elevated temperatures or higher currents, V_F increases slightly but remains within design-safe limits.

Is the 2A03G-T RoHS and halogen-free compliant?

Yes-the 2A03G-T meets RoHS Directive 2011/65/EU and is halogen-free per IEC 61249-2-21, as explicitly stated in the FEATURES section of the TSC datasheet. The molding compound is UL 94V-0 rated, and terminals are pure tin-plated to ensure solderability and environmental compliance without brominated flame retardants.

What is the surge current rating (I_FSM) of the 2A03G-T, and how is it tested?

The 2A03G-T has an I_FSM rating of 70 A, defined as the peak non-repetitive forward surge current under an 8.3 ms single half-sine wave condition. This test simulates line surges and inrush events in power supplies. The rating assumes no prior heating and is validated per JEDEC standards, ensuring reliability during cold-start or fault conditions in industrial equipment.

What package type does the 2A03G-T use, and what are its mechanical identifiers?

The 2A03G-T uses the DO-204AC (DO-15) package-a standardized axial-leaded outline with 0.400 g typical weight, cathode band polarity marking, and pure tin-plated leads qualified to J-STD-002. Dimensions and molding compound flammability (UL 94V-0) are detailed in the PACKAGE OUTLINE DIMENSIONS section of the TSC datasheet.

2A03G-T Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-204AC, DO-15, Axial

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 200 V

Current - Average Rectified (Io):: 2A

Voltage - Forward (Vf) (Max) @ If:: 1 V @ 2 A

Speed:: Standard Recovery >500ns, > 200mA (Io)

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 5 µA @ 200 V

Capacitance @ Vr, F:: 15pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: DO-204AC (DO-15)

Operating Temperature - Junction:: -55°C ~ 150°C

2A03G-T FAQ

1.How can I place an order for 2A03G-T through Aetrix?

Please submit a Request for Quotation (RFQ) for 2A03G-T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for 2A03G-T reliable?

The price and inventory of 2A03G-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2A03G-T is usually 5 days.

3.What payment methods are accepted for 2A03G-T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2A03G-T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2A03G-T?

2A03G-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2A03G-T order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for 2A03G-T?

For technical support, including 2A03G-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2A03G-T requirements.

6.How does Aetrix verify that 2A03G-T is sourced from the original manufacturer or authorized distributors?

All 2A03G-T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 2A03G-T meets industry standards.

7.What is the process for return or replacement of 2A03G-T?

All 2A03G-T units undergo pre-shipment inspection (PSI). If there is an issue with 2A03G-T, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The 2A03G-T part is unused and in its original packaging.

Return procedure for 2A03G-T:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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