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

Taiwan Semiconductor Corporation 1N5404G-K

Name: 1N5404G-K
Brand: Taiwan Semiconductor Corporation
SKU: 1N5404G-K
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 1N5404G-K

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-201AD, Axial

Datasheet:: 1N5404G-K.pdf

Description:: 3A, 400V, STANDARD RECTIFIER

Quantity:: RFQ Add To RFQ list

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Inventory:6,693

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Product details

Overview

1N5404G-K from Taiwan Semiconductor is a glass-passivated standard silicon rectifier diode rated for 3 A average forward current and 400 V repetitive peak reverse voltage, with 125 A surge capability and 1.0 V max forward voltage at 3 A, used in DC-DC converters and switching-mode power supplies.

For engineers reviewing the 1N5404G-K datasheet, 1N5404G-K pinout, 1N5404G-K application, or 1N5404G-K equivalent, key selection criteria include V_RRM = 400 V, I_F = 3 A, I_FSM = 125 A, thermal resistance R_θJA = 45 °C/W, and DO-201AD package compatibility with high-reliability industrial power conversion designs.

Technical Context

This single-die, axial-leaded rectifier operates across -55 °C to +150 °C junction temperature range and features low-power-loss operation due to its 1.0 V max forward voltage at rated current and 5 µA max reverse leakage at 25 °C. Its glass-passivated junction ensures stable performance under humidity and thermal cycling stress.

The device uses a DO-201AD molded package with pure tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 1A whisker resistance. Polarity is marked by a cathode band, and it meets UL 94V-0 flammability requirements.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	400 V - Maximum non-repetitive reverse voltage the diode blocks without breakdown; defines usable input voltage range in AC/DC front-ends.
I_F	3 A - Continuous average forward current rating; determines steady-state power handling in rectification stages.
I_FSM	125 A - Peak non-repetitive surge current (8.3 ms half-sine); supports inrush current tolerance in SMPS startup.
V_F @ 3 A	≤1.0 V - Forward voltage drop at full rated current; directly impacts conduction loss and thermal design margin.
R_θJA	45 °C/W - Junction-to-ambient thermal resistance; sets minimum heatsinking requirement for 3 A continuous operation at ambient ≤75 °C.
T_J max	+150 °C - Maximum allowable junction temperature; enables operation in high-temperature industrial environments.

Pinout & Package

Package: DO-201AD - Axial-leaded, epoxy-molded case with cathode band marking; UL 94V-0 rated, 1.20 g typical weight, tin-plated leads per J-STD-002.

Pin/Terminal	Circuit Role	Design Meaning
Anode (unmarked end)	Forward current entry point	Connects to AC source or transformer secondary side; must withstand full surge current and reverse recovery stress.
Cathode (banded end)	Forward current exit / reverse blocking terminal	Connects to output filter capacitor or load return; polarity marking prevents reverse installation in PCB assembly.

Key Features

Feature	Design Value
Glass-passivated junction	Enables stable long-term reliability and moisture resistance in unsealed industrial enclosures.
125 A surge rating (8.3 ms)	Supports repeated cold-start surges in offline switchers without degradation or failure.
RoHS & halogen-free compliance	Fulfills IPC/JEDEC environmental standards for lead-free manufacturing and end-of-life recycling.
Low 1.0 V V_F at 3 A	Reduces conduction loss to ≤3 W at full load, easing thermal management in compact power supplies.

Applications

AC/DC Front-End Rectification	DC-DC Converter Input Stage
Use Scenario: Full-wave bridge rectification of 115/230 VAC mains in offline SMPS. IC Role / Device Role / Timing Role: Standard rectifier diode providing unidirectional current path and reverse voltage blocking. Use Value: 400 V V_RRM safely handles 230 VAC peak (≈325 V) with margin; 125 A I_FSM absorbs transformer inrush.	Use Scenario: Input rectification in isolated flyback or forward converter feeding 12–48 V outputs. IC Role / Device Role / Timing Role: Discrete power diode converting high-frequency transformer secondary AC to DC. Use Value: 1.0 V V_F minimizes conduction loss at 3 A; DO-201AD package allows manual or automated through-hole assembly.
Industrial Power Supply Hold-Up	General-Purpose Linear Supply
Use Scenario: Secondary-side rectification in 24 V/3 A industrial control power supply with extended hold-up time. IC Role / Device Role / Timing Role: Main output rectifier sustaining load during brief AC dropout events. Use Value: 3 A I_F rating matches nominal load; 150 °C T_J max supports operation inside sealed enclosures.	Use Scenario: Low-cost linear regulator input stage in instrumentation or embedded system auxiliary supply. IC Role / Device Role / Timing Role: Discrete rectifier enabling simple, robust, low-noise DC generation. Use Value: Glass passivation ensures stability over 10+ year field life; RoHS/halogen-free compliance meets global regulatory requirements.

AC/DC Front-End Rectification

DC-DC Converter Input Stage

Use Scenario: Full-wave bridge rectification of 115/230 VAC mains in offline SMPS.

IC Role / Device Role / Timing Role: Standard rectifier diode providing unidirectional current path and reverse voltage blocking.

Use Value: 400 V V_RRM safely handles 230 VAC peak (≈325 V) with margin; 125 A I_FSM absorbs transformer inrush.

Use Scenario: Input rectification in isolated flyback or forward converter feeding 12–48 V outputs.

IC Role / Device Role / Timing Role: Discrete power diode converting high-frequency transformer secondary AC to DC.

Use Value: 1.0 V V_F minimizes conduction loss at 3 A; DO-201AD package allows manual or automated through-hole assembly.

Industrial Power Supply Hold-Up

General-Purpose Linear Supply

Use Scenario: Secondary-side rectification in 24 V/3 A industrial control power supply with extended hold-up time.

IC Role / Device Role / Timing Role: Main output rectifier sustaining load during brief AC dropout events.

Use Value: 3 A I_F rating matches nominal load; 150 °C T_J max supports operation inside sealed enclosures.

Use Scenario: Low-cost linear regulator input stage in instrumentation or embedded system auxiliary supply.

IC Role / Device Role / Timing Role: Discrete rectifier enabling simple, robust, low-noise DC generation.

Use Value: Glass passivation ensures stability over 10+ year field life; RoHS/halogen-free compliance meets global regulatory requirements.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
1N5404	No "G-K" suffix; may lack halogen-free certification and JESD 201 whisker test compliance.	Suitable for non-regulated or legacy industrial designs where environmental compliance is not mandated.	Select 1N5404G-K when RoHS, halogen-free, and whisker-resistant plating are required for production release.
STTH3L04	Ultrafast recovery (t_rr ≈ 50 ns vs. ~2 µs), higher V_F (~1.3 V), same 400 V/3 A ratings.	Better suited for high-frequency (>100 kHz) topologies where reverse recovery loss dominates.	Choose STTH3L04 only if switching frequency exceeds 50 kHz; otherwise, 1N5404G-K offers lower conduction loss and cost.

Compared with 1N5404 and STTH3L04, the 1N5404G-K delivers optimal balance of low V_F, robust surge capability, and full environmental compliance-making it preferred for cost-sensitive, thermally constrained, and regulated industrial power supplies operating below 100 kHz.

Availability

1N5404G-K is available at Aetrix Electronics and suitable for DC-DC converters, switching-mode inverters, and general-purpose industrial power supplies requiring stable component supply, long-lifecycle support, and traceable sourcing.

Supply support for 1N5404G-K 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 industrial, computing, and consumer markets since 1979.

The 1N5404G-K belongs to TSC's standard rectifier family designed specifically for rugged, high-surge, cost-optimized AC/DC and DC/DC power conversion in industrial and infrastructure equipment.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for the 1N5404G-K?

The 1N5404G-K has a V_RRM rating of 400 V, meaning it reliably blocks up to 400 V of reverse voltage in repetitive operation. This value is confirmed in the Absolute Maximum Ratings table on page 1 of the official Taiwan Semiconductor datasheet (Version C2105). Exceeding this voltage risks avalanche breakdown and permanent damage to the 1N5404G-K.

What is the forward voltage drop (V_F) of the 1N5404G-K at its rated 3 A current?

At I_F = 3 A and T_J = 25 °C, the 1N5404G-K exhibits a maximum forward voltage of 1.0 V, as specified in the Electrical Specifications table. This low V_F reduces conduction losses to ≤3 W under full load, contributing to thermal efficiency in compact power designs using the 1N5404G-K.

Does the 1N5404G-K have RoHS and halogen-free compliance?

Yes, the 1N5404G-K is explicitly stated as RoHS compliant and halogen-free per IEC 61249-2-21 in the Features section of the Taiwan Semiconductor datasheet. The "G-K" suffix denotes green compound and full environmental compliance-distinct from non-suffixed variants like 1N5404, which lack this certification.

What package type does the 1N5404G-K use, and how is polarity identified?

The 1N5404G-K uses the DO-201AD axial-leaded package with a molded epoxy body. Polarity is clearly indicated by a visible cathode band on the banded end of the device body, as documented in the Mechanical Data and Marking Diagram sections of the datasheet. This marking ensures correct orientation during manual or automated assembly of the 1N5404G-K.

What is the surge current rating (I_FSM) of the 1N5404G-K, and under what conditions is it specified?

The 1N5404G-K has an I_FSM rating of 125 A, defined for a single 8.3 ms half-sine wave surge superimposed on rated DC load. This rating is validated per JEDEC standards and enables the 1N5404G-K to survive transformer inrush and transient overloads common in offline power supplies without degradation.

1N5404G-K Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-201AD, Axial

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Standard

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

Current - Average Rectified (Io):: 3A

Voltage - Forward (Vf) (Max) @ If:: 1 V @ 3 A

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

Reverse Recovery Time (trr):: -

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

Capacitance @ Vr, F:: 25pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: DO-201AD

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

1N5404G-K FAQ

1.How can I place an order for 1N5404G-K through Aetrix?

Please submit a Request for Quotation (RFQ) for 1N5404G-K 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 1N5404G-K reliable?

The price and inventory of 1N5404G-K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5404G-K is usually 5 days.

3.What payment methods are accepted for 1N5404G-K?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5404G-K transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1N5404G-K?

1N5404G-K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1N5404G-K 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 1N5404G-K?

For technical support, including 1N5404G-K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5404G-K requirements.

6.How does Aetrix verify that 1N5404G-K is sourced from the original manufacturer or authorized distributors?

All 1N5404G-K 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 1N5404G-K meets industry standards.

7.What is the process for return or replacement of 1N5404G-K?

All 1N5404G-K units undergo pre-shipment inspection (PSI). If there is an issue with 1N5404G-K, 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 1N5404G-K part is unused and in its original packaging.

Return procedure for 1N5404G-K:

1.Submit a request within 90 days.

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

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