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

Taiwan Semiconductor Corporation 2A04G

Name: 2A04G
Brand: Taiwan Semiconductor Corporation
SKU: 2A04G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2A04G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

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

Datasheet:: 2A04G.pdf

Description:: DIODE GEN PURP 400V 2A DO204AC

Quantity:: RFQ Add To RFQ list

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Inventory:6,876

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Product details

Overview

2A04G from Taiwan Semiconductor is a standard silicon rectifier diode in DO-204AC (DO-15) package, rated for 400 V repetitive peak reverse voltage (V_RRM), 2 A average forward current (I_F), and 70 A non-repetitive surge current (I_FSM). It features low forward voltage (1.0 V at 2 A, 25°C), glass-passivated junction, and RoHS/halogen-free compliance - used in DC-DC converters and switching-mode power supplies.

For engineers reviewing the 2A04G datasheet, 2A04G pinout, 2A04G application, or 2A04G equivalent, key selection criteria include V_RRM = 400 V, I_F = 2 A, V_F ≤ 1.0 V, thermal resistance R_θJL = 25 °C/W, and DO-204AC mechanical compatibility with through-hole PCB assembly.

Technical Context

The 2A04G is a single-die, general-purpose axial-lead rectifier optimized for medium-voltage, medium-current AC/DC conversion. Its glass-passivated junction ensures stable reverse leakage (<5 µA at 25°C, <100 µA at 125°C) and robust surge handling (70 A, 8.3 ms half-sine).

Thermal performance is defined by R_θJL = 25 °C/W and R_θJA = 60 °C/W, supporting operation up to T_J = 150°C. Polarity is marked by cathode band; leads are pure tin-plated per J-STD-002.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	400 V - maximum sustained reverse voltage before breakdown; defines usable input range in 380 VAC-derived supplies
I_F	2 A - continuous average forward current; sets minimum heatsinking requirement for steady-state conduction
I_FSM	70 A - short-duration surge rating; enables survival during line transients or inrush events
V_F	1.0 V @ 2 A, 25°C - forward drop directly impacts conduction loss (P_cond ≈ 2 W) and thermal design
R_θJL	25 °C/W - junction-to-lead thermal resistance; determines temperature rise above PCB copper under full load
C_J	15 pF @ 4 V - junction capacitance affects high-frequency switching noise and EMI filter interaction

Pinout & Package

Package: DO-204AC (DO-15), axial-lead, glass-passivated silicon die, cathode indicated by band, lead finish: pure tin, weight ≈ 0.400 g.

Pin/Terminal	Circuit Role	Design Meaning
Anode (unbanded end)	Forward current entry point	Connected to lower-potential side of AC source or transformer secondary; requires clearance for voltage standoff
Cathode (banded end)	Forward current exit point	Connected to output rail or smoothing capacitor; polarity marking critical for correct PCB orientation

Key Features

Feature	Design Value
Glass-passivated junction	Enables stable long-term reverse leakage and humidity resistance without hermetic sealing
Low V_F (1.0 V)	Reduces conduction loss by ~15% vs. comparable 1.15 V diodes at 2 A, lowering thermal stress in compact layouts
R_θJL = 25 °C/W	Allows direct soldering to copper pour for effective heat transfer without discrete heatsink in ≤1 W dissipation designs
AEC-Q101 qualified option (2A04GH)	Validated for automotive under-hood environments including temperature cycling, vibration, and humidity exposure

Applications

DC–DC Converter	Switching Inverter
Use Scenario: Secondary-side rectification in isolated flyback or forward converters delivering 12–48 V outputs. IC Role / Device Role / Timing Role: Power rectifier converting high-frequency transformer output to regulated DC. Use Value: 400 V V_RRM supports 380 VAC input-derived topologies; 1.0 V V_F minimizes output-stage loss and improves efficiency >90% at mid-load.	Use Scenario: Freewheeling or output rectification in motor drive inverters operating from 200–400 VDC bus. IC Role / Device Role / Timing Role: Unidirectional current path for inductive kickback energy recovery and DC output smoothing. Use Value: 70 A I_FSM withstands motor stall surges; DO-15 package fits standard through-hole footprints in industrial PCBs.
General-Purpose AC/DC Adapter	Industrial Power Supply Input Stage
Use Scenario: Bridge rectifier leg in universal-input (90–264 VAC) wall adapters powering consumer electronics. IC Role / Device Role / Timing Role: Half-wave or full-wave rectification in cost-sensitive linear or quasi-resonant SMPS. Use Value: RoHS/halogen-free construction meets global regulatory requirements; 0.400 g weight supports automated insertion and reflow-compatible tinning.	Use Scenario: Input rectification in DIN-rail mounted 24/48 V industrial PSUs handling 100–240 VAC mains. IC Role / Device Role / Timing Role: Primary-side uncontrolled rectifier feeding bulk capacitor and PFC stage. Use Value: 150°C T_JMAX and JESD201 Class 2 whisker resistance ensure reliability in high-ambient factory environments.

DC–DC Converter

Switching Inverter

Use Scenario: Secondary-side rectification in isolated flyback or forward converters delivering 12–48 V outputs.

IC Role / Device Role / Timing Role: Power rectifier converting high-frequency transformer output to regulated DC.

Use Value: 400 V V_RRM supports 380 VAC input-derived topologies; 1.0 V V_F minimizes output-stage loss and improves efficiency >90% at mid-load.

Use Scenario: Freewheeling or output rectification in motor drive inverters operating from 200–400 VDC bus.

IC Role / Device Role / Timing Role: Unidirectional current path for inductive kickback energy recovery and DC output smoothing.

Use Value: 70 A I_FSM withstands motor stall surges; DO-15 package fits standard through-hole footprints in industrial PCBs.

General-Purpose AC/DC Adapter

Industrial Power Supply Input Stage

Use Scenario: Bridge rectifier leg in universal-input (90–264 VAC) wall adapters powering consumer electronics.

IC Role / Device Role / Timing Role: Half-wave or full-wave rectification in cost-sensitive linear or quasi-resonant SMPS.

Use Value: RoHS/halogen-free construction meets global regulatory requirements; 0.400 g weight supports automated insertion and reflow-compatible tinning.

Use Scenario: Input rectification in DIN-rail mounted 24/48 V industrial PSUs handling 100–240 VAC mains.

IC Role / Device Role / Timing Role: Primary-side uncontrolled rectifier feeding bulk capacitor and PFC stage.

Use Value: 150°C T_JMAX and JESD201 Class 2 whisker resistance ensure reliability in high-ambient factory environments.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor MUR240	V_RRM = 400 V, I_F = 2 A, V_F = 1.25 V (typ), faster recovery (t_rr = 50 ns) vs. standard recovery (~2 µs)	Better suited for higher-frequency SMPS (>100 kHz); higher V_F increases conduction loss	Select MUR240 when EMI reduction or reduced switching loss outweighs conduction loss penalty
Vishay 1N5404	V_RRM = 400 V, I_F = 3 A, V_F = 1.1 V (max), DO-201AD package (larger, higher thermal mass)	Higher I_F rating allows derated use in hotter environments; larger footprint limits layout density	Select 1N5404 where board space permits and long-term thermal margin >1.5× required

Compared with MUR240 and 1N5404, the 2A04G offers lowest forward voltage (1.0 V) in its class and smallest DO-15 footprint - ideal for space-constrained, thermally sensitive 50–100 kHz converter designs requiring minimal conduction loss.

Availability

2A04G is available at Aetrix Electronics and suitable for DC–DC converters, switching inverters, and industrial power supply input stages requiring stable component supply, consistent parametric performance across production lots, and long-term manufacturability.

Supply support for 2A04G 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, MOSFETs, and bipolar transistors.

The 2A01G–2A07G series was designed for cost-effective, reliable AC/DC and DC/DC power conversion in industrial, computing, and consumer applications - emphasizing thermal robustness, process consistency, and regulatory compliance.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for the 2A04G?

The 2A04G has a V_RRM of 400 V, confirmed in the Absolute Maximum Ratings table across all versions of the I2105 datasheet. This rating defines the highest instantaneous reverse voltage the device can block repeatedly without breakdown, making it suitable for 230 VAC-derived supplies with safety margin.

Is the 2A04G RoHS and halogen-free compliant?

Yes, the 2A04G is RoHS compliant and halogen-free per IEC 61249-2-21, as explicitly stated in the FEATURES section of the datasheet. The molding compound meets UL 94V-0, and leads are pure tin-plated - satisfying environmental and solderability requirements for modern electronics manufacturing.

What is the forward voltage (V_F) of the 2A04G at rated current?

The 2A04G exhibits a typical forward voltage of 1.0 V at I_F = 2 A and T_J = 25°C, per the ELECTRICAL SPECIFICATIONS table. This value is confirmed for the 2A03G–2A07G group, including 2A04G, and directly impacts conduction loss and thermal design in power circuits.

Does the 2A04G have AEC-Q101 qualification?

The base 2A04G is not AEC-Q101 qualified, but the variant 2A04GH is explicitly listed as AEC-Q101 qualified in the ORDERING INFORMATION section. Engineers requiring automotive-grade reliability must specify the "H" suffix part number for qualification-compliant supply.

What is the thermal resistance from junction to lead (R_θJL) for the 2A04G?

The 2A04G has a junction-to-lead thermal resistance (R_θJL) of 25 °C/W, as specified in the THERMAL PERFORMANCE table. This parameter enables accurate estimation of junction temperature rise above the PCB copper plane under steady-state conduction, critical for lifetime and derating analysis.

2A04G 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):: 400 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 @ 400 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

2A04G FAQ

1.How can I place an order for 2A04G through Aetrix?

Please submit a Request for Quotation (RFQ) for 2A04G 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 2A04G reliable?

The price and inventory of 2A04G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2A04G is usually 5 days.

3.What payment methods are accepted for 2A04G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2A04G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2A04G?

2A04G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2A04G 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 2A04G?

For technical support, including 2A04G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2A04G requirements.

6.How does Aetrix verify that 2A04G is sourced from the original manufacturer or authorized distributors?

All 2A04G 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 2A04G meets industry standards.

7.What is the process for return or replacement of 2A04G?

All 2A04G units undergo pre-shipment inspection (PSI). If there is an issue with 2A04G, 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 2A04G part is unused and in its original packaging.

Return procedure for 2A04G:

1.Submit a request within 90 days.

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

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