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

Taiwan Semiconductor Corporation FR304G A0G

Name: FR304G A0G
Brand: Taiwan Semiconductor Corporation
SKU: FR304G A0G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: FR304G A0G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-201AD, Axial

Datasheet:: FR304G A0G.pdf

Description:: DIODE GEN PURP 400V 3A DO201AD

Quantity:: RFQ Add To RFQ list

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Inventory:6,671

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Product details

Overview

FR304G A0G from Taiwan Semiconductor is a 3A, 400V fast recovery rectifier diode in DO-201AD package, featuring 150ns reverse recovery time, 1.3V max forward voltage at 3A, and 125A surge capability - deployed in switching-mode DC/DC converters for industrial power supplies.

For engineers reviewing the FR304G A0G datasheet, FR304G A0G pinout, FR304G A0G application, or FR304G A0G equivalent, key selection criteria include V_RRM = 400V, I_F = 3A, t_rr = 150ns, thermal resistance R_θJA = 35°C/W, and DO-201AD mechanical compatibility with high-reliability board-level power conversion designs.

Technical Context

This single-die fast recovery rectifier operates with low conduction loss (V_F ≤ 1.3V @ 3A, 25°C) and controlled switching behavior (t_rr = 150ns under 0.5A/1.0A test conditions), enabling efficient operation in high-frequency SMPS topologies up to several hundred kHz.

Its DO-201AD package delivers 35°C/W junction-to-ambient thermal resistance and supports 125A non-repetitive surge current (8.3ms half-sine), while maintaining AEC-Q101 qualification readiness via optional H-suffix variants - though FR304G A0G itself is standard-grade.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	400 V - maximum repetitive reverse voltage; defines safe blocking capability in 400V-rated bus applications
I_F	3 A - continuous average forward current; sets baseline thermal design for heatsink-free operation up to ~70°C ambient
t_rr	150 ns - reverse recovery time; enables stable switching in 100–300 kHz DC/DC converters with minimal switching loss
V_F (max)	1.3 V @ 3A, 25°C - forward voltage drop; determines conduction loss of ~3.9W at full load, critical for efficiency budgeting
R_θJA	35 °C/W - junction-to-ambient thermal resistance; allows estimation of junction temperature rise under real PCB layout conditions
I_FSM	125 A - peak non-repetitive surge current; supports robustness against line transients and startup inrush in offline SMPS

Pinout & Package

DO-201AD axial-leaded package with cathode band marking; leads are pure tin-plated, solderable per J-STD-002, and meet JESD201 Class 2 whisker resistance.

Pin/Terminal	Circuit Role	Design Meaning
Anode (lead without band)	Forward current entry point	Connected to lower-potential side (e.g., transformer secondary center-tap or switch node return)
Cathode (lead with band)	Forward current exit / reverse blocking terminal	Connected to output rail or filter capacitor positive; blocks reverse voltage up to 400V

Key Features

Feature	Design Value
Fast recovery time	150 ns - reduces switching losses and EMI generation in high-frequency converters
Low forward voltage	≤1.3 V @ 3A - minimizes conduction loss and improves system efficiency at rated load
High surge rating	125 A (8.3 ms) - withstands repetitive line surges and inrush currents without degradation
RoHS & halogen-free	Compliant per IEC 61249-2-21 - meets environmental requirements for industrial and consumer end equipment

Applications

AC/DC Adapter Power Supply	Industrial DC/DC Converter
Use Scenario: Secondary-side rectification in 24–48V output flyback or forward converters for wall adapters and embedded power bricks. IC Role / Device Role / Timing Role: Fast recovery rectifier handling 3A continuous output current with minimal voltage drop and switching loss. Use Value: Enables >88% efficiency at full load due to 1.3V V_F and 150ns t_rr, reducing thermal stress on PCB layout.	Use Scenario: Output rectification in isolated 12V/5V dual-rail DC/DC modules used in PLC I/O cards and motor drive control boards. IC Role / Device Role / Timing Role: High-reliability discrete rectifier replacing Schottky diodes where higher V_RRM and thermal stability are required. Use Value: Sustains 150°C junction temperature and 125A surge without derating, supporting long-life industrial deployment.
Switching Inverter Auxiliary Supply	Telecom Rectifier Module
Use Scenario: Bias supply rectification for gate drivers and controllers in 3-phase IGBT inverters operating at 600V DC bus. IC Role / Device Role / Timing Role: 400V-blocking fast recovery diode providing clean, low-loss auxiliary rail from auxiliary winding. Use Value: 400V V_RRM safely isolates from reflected transients; 35°C/W R_θJA allows compact heatsink-free design.	Use Scenario: Input-stage rectification in -48V telecom rectifier modules requiring high reliability and surge immunity. IC Role / Device Role / Timing Role: Primary AC input rectifier delivering 3A average current with low IR leakage (<5 µA @ 25°C). Use Value: Ultra-low reverse leakage ensures minimal standby power loss across wide temperature range (-55°C to +125°C).

AC/DC Adapter Power Supply

Industrial DC/DC Converter

Use Scenario: Secondary-side rectification in 24–48V output flyback or forward converters for wall adapters and embedded power bricks.

IC Role / Device Role / Timing Role: Fast recovery rectifier handling 3A continuous output current with minimal voltage drop and switching loss.

Use Value: Enables >88% efficiency at full load due to 1.3V V_F and 150ns t_rr, reducing thermal stress on PCB layout.

Use Scenario: Output rectification in isolated 12V/5V dual-rail DC/DC modules used in PLC I/O cards and motor drive control boards.

IC Role / Device Role / Timing Role: High-reliability discrete rectifier replacing Schottky diodes where higher V_RRM and thermal stability are required.

Use Value: Sustains 150°C junction temperature and 125A surge without derating, supporting long-life industrial deployment.

Switching Inverter Auxiliary Supply

Telecom Rectifier Module

Use Scenario: Bias supply rectification for gate drivers and controllers in 3-phase IGBT inverters operating at 600V DC bus.

IC Role / Device Role / Timing Role: 400V-blocking fast recovery diode providing clean, low-loss auxiliary rail from auxiliary winding.

Use Value: 400V V_RRM safely isolates from reflected transients; 35°C/W R_θJA allows compact heatsink-free design.

Use Scenario: Input-stage rectification in -48V telecom rectifier modules requiring high reliability and surge immunity.

IC Role / Device Role / Timing Role: Primary AC input rectifier delivering 3A average current with low IR leakage (<5 µA @ 25°C).

Use Value: Ultra-low reverse leakage ensures minimal standby power loss across wide temperature range (-55°C to +125°C).

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH3L04S	V_RRM = 400V, I_F = 3A, t_rr = 35ns, TO-220AC package	Lower t_rr but larger footprint and mandatory heatsink mounting	Preferred when ultra-fast switching (<50ns) and forced-air cooling are available
ON Semi MUR340	V_RRM = 400V, I_F = 3A, t_rr = 60ns, DO-201AD package	Same package, faster recovery, but higher V_F (1.55V typ)	Selected when reduced EMI outweighs conduction loss penalty in noise-sensitive systems

Compared with STTH3L04S and MUR340, FR304G A0G offers optimal balance of speed (150ns), conduction loss (1.3V), and DO-201AD board space efficiency - making it ideal for cost- and size-constrained industrial SMPS where thermal headroom exists.

Availability

FR304G A0G is available at Aetrix Electronics and suitable for AC/DC adapters, industrial DC/DC converters, and telecom rectifier modules requiring stable component supply and consistent DO-201AD leaded packaging.

Supply support for FR304G A0G 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 FR30xG series is designed specifically for high-efficiency, high-reliability power conversion - emphasizing fast recovery, low V_F, and rugged surge performance in standard axial packages for mainstream SMPS applications.

FAQ

What is the maximum junction temperature rating for FR304G A0G?

The FR304G A0G has a maximum junction temperature (T_J) of +150°C, with a storage temperature range of –55°C to +150°C. This rating allows reliable operation in industrial environments where ambient temperatures reach 70–85°C, provided thermal design accounts for its 35°C/W R_θJA. The FR304G A0G must be mounted on adequate copper area to maintain T_J within limit under full 3A load.

Is FR304G A0G RoHS and halogen-free compliant?

Yes, FR304G A0G is RoHS compliant and halogen-free per IEC 61249-2-21. Its molding compound meets UL 94V-0 flammability rating, and its pure tin-plated leads satisfy J-STD-002 solderability requirements. These compliance attributes are confirmed in Taiwan Semiconductor's official FR301G–FR307G datasheet (Version H2105).

What does the 'A0G' suffix mean in FR304G A0G?

The 'A0G' suffix in FR304G A0G indicates an ammo box packaging option containing 500 units per box, using the standard DO-201AD package. It is not AEC-Q101 qualified - that designation requires the 'H' suffix (e.g., FR304GH). The 'G' denotes green (halogen-free) compound, and 'A0' specifies the packing format per Taiwan Semiconductor's ordering code table.

How does FR304G A0G compare to FR305G in terms of reverse voltage rating?

FR304G A0G has a repetitive peak reverse voltage (V_RRM) of 400V, whereas FR305G is rated for 600V. Both share identical I_F = 3A, I_FSM = 125A, and DO-201AD packaging, but FR305G exhibits longer reverse recovery time (250ns vs. 150ns for FR304G A0G), reflecting trade-offs between voltage capability and switching speed within the same family.

Can FR304G A0G replace a Schottky diode in a 24V output converter?

FR304G A0G can replace a Schottky diode only if reverse voltage stress exceeds the Schottky's rating and thermal design accommodates its higher V_F (1.3V vs. typical 0.4–0.6V for Schottky). While FR304G A0G offers superior 400V blocking and surge robustness, its 150ns t_rr and higher conduction loss may reduce efficiency - use it where reliability and voltage margin outweigh efficiency gains.

FR304G A0G Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-201AD, Axial

Packaging:: Tape & Box (TB)

Product Status:: Active

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 400 V

Current - Average Rectified (Io):: 3A

Voltage - Forward (Vf) (Max) @ If:: 1.3 V @ 3 A

Speed:: Fast Recovery =< 500ns, > 200mA (Io)

Reverse Recovery Time (trr):: 150 ns

Current - Reverse Leakage @ Vr:: 5 µA @ 400 V

Capacitance @ Vr, F:: 30pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: DO-201AD

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

FR304G A0G FAQ

1.How can I place an order for FR304G A0G through Aetrix?

Please submit a Request for Quotation (RFQ) for FR304G A0G 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 FR304G A0G reliable?

The price and inventory of FR304G A0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FR304G A0G is usually 5 days.

3.What payment methods are accepted for FR304G A0G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FR304G A0G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for FR304G A0G?

FR304G A0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your FR304G A0G 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 FR304G A0G?

For technical support, including FR304G A0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FR304G A0G requirements.

6.How does Aetrix verify that FR304G A0G is sourced from the original manufacturer or authorized distributors?

All FR304G A0G 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 FR304G A0G meets industry standards.

7.What is the process for return or replacement of FR304G A0G?

All FR304G A0G units undergo pre-shipment inspection (PSI). If there is an issue with FR304G A0G, 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 FR304G A0G part is unused and in its original packaging.

Return procedure for FR304G A0G:

1.Submit a request within 90 days.

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

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