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

Taiwan Semiconductor Corporation 1N5408GH

Name: 1N5408GH
Brand: Taiwan Semiconductor Corporation
SKU: 1N5408GH
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 1N5408GH

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-201AD, Axial

Datasheet:: 1N5408GH.pdf

Description:: DIODE GEN PURP 3A DO201AD

Quantity:: RFQ Add To RFQ list

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Product details

Overview

1N5408GH from Taiwan Semiconductor is a glass-passivated, AEC-Q101 qualified standard silicon rectifier diode in DO-201AD package, rated for 3A average forward current, 1000V repetitive peak reverse voltage, and 125A non-repetitive surge current; used in automotive-grade DC-DC converters and switching inverters.

For engineers reviewing the 1N5408GH datasheet, 1N5408GH pinout, 1N5408GH application, or 1N5408GH equivalent, key selection criteria include V_RRM = 1000 V, I_F = 3 A, V_F = 1.0 V @ 3 A, T_J = 150 °C, and AEC-Q101 qualification status for under-hood power conversion designs.

Technical Context

This single-die, unidirectional standard rectifier operates with a glass-passivated PN junction to ensure stable reverse leakage (I_R ≤ 5 µA @ 25 °C, ≤ 100 µA @ 125 °C) and low forward voltage drop. Its DO-201AD package provides 45 °C/W junction-to-ambient thermal resistance and supports high-reliability automotive power supplies.

The device delivers high surge robustness (I_FSM = 125 A, 8.3 ms half-sine) and low junction capacitance (C_J = 25 pF @ 1 MHz, 4 V), enabling efficient operation in high-frequency switching mode power supplies without excessive switching losses or EMI concerns.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	1000 V - Maximum reverse blocking voltage before breakdown; enables use in 700 V DC bus systems with safety margin.
I_F	3 A - Continuous average forward current at T_A = 75 °C; defines steady-state power handling in rectification stages.
V_F	1.0 V @ 3 A, 25 °C - Forward voltage drop determines conduction loss (P_cond ≈ 3 W) and thermal design requirements.
I_FSM	125 A @ 8.3 ms - Peak surge rating supports inrush current tolerance during cold-start in industrial SMPS.
T_J max	150 °C - Maximum junction temperature allows operation in under-hood automotive environments with derating.
C_J	25 pF @ 1 MHz, 4 V - Low junction capacitance minimizes reverse recovery charge and switching noise in 50–100 kHz converters.

Pinout & Package

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

Pin/Terminal	Circuit Role	Design Meaning
Anode (unmarked end)	Forward current entry point	Connects to AC input or transformer secondary; polarity must be verified before PCB layout.
Cathode (banded end)	Forward current exit / reverse blocking terminal	Connects to output filter capacitor or load; band orientation critical for correct rectification direction.

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive power modules requiring extended temperature cycling, humidity, and mechanical stress compliance.
Glass passivated junction	Enhances moisture resistance and long-term reliability in humid or thermally cycled environments.
Low V_F (1.0 V)	Reduces conduction loss by ~10% vs. legacy 1N5408 variants, improving efficiency in 12–48 V DC-DC outputs.
125 A surge rating	Supports repeated cold-start events in battery-powered inverters without degradation or failure.
Halogen-free & RoHS compliant	Meets IEC 61249-2-21 and EU RoHS directives for environmentally regulated industrial and automotive production.

Applications

Automotive DC-DC Converter	Industrial Switching Inverter
Use Scenario: High-voltage battery-to-12 V step-down converter in EV auxiliary power units. IC Role / Device Role / Timing Role: Primary output rectifier in synchronous or diode-based flyback topology. Use Value: 1000 V V_RRM accommodates transients up to 800 V DC bus; AEC-Q101 ensures 15-year field reliability.	Use Scenario: Output stage rectification in 3 kW solar micro-inverter power stage. IC Role / Device Role / Timing Role: Uncontrolled rectifier in full-wave bridge configuration feeding DC link capacitor. Use Value: 125 A I_FSM withstands grid-fault surges; 1.0 V V_F limits thermal rise at 3 A continuous load.
UPS Input Rectifier	AC Motor Drive Snubber
Use Scenario: Line-frequency rectification in online UPS front-end with hold-up capacitor charging. IC Role / Device Role / Timing Role: Half-wave or full-wave rectifier in 230 V AC input stage. Use Value: 700 V RMS reverse rating (V_R(RMS) = 700 V) supports 230 V AC + 30% overvoltage per IEC 62040-3.	Use Scenario: Snubber network clamp diode in 400 V three-phase motor drive IGBT gate driver circuits. IC Role / Device Role / Timing Role: Transient voltage clamping element absorbing inductive kickback energy. Use Value: Fast recovery behavior (inherent in standard Si rectifier) and 1000 V V_RRM prevent breakdown during 600 V switching spikes.

Automotive DC-DC Converter

Industrial Switching Inverter

Use Scenario: High-voltage battery-to-12 V step-down converter in EV auxiliary power units.

IC Role / Device Role / Timing Role: Primary output rectifier in synchronous or diode-based flyback topology.

Use Value: 1000 V V_RRM accommodates transients up to 800 V DC bus; AEC-Q101 ensures 15-year field reliability.

Use Scenario: Output stage rectification in 3 kW solar micro-inverter power stage.

IC Role / Device Role / Timing Role: Uncontrolled rectifier in full-wave bridge configuration feeding DC link capacitor.

Use Value: 125 A I_FSM withstands grid-fault surges; 1.0 V V_F limits thermal rise at 3 A continuous load.

UPS Input Rectifier

AC Motor Drive Snubber

Use Scenario: Line-frequency rectification in online UPS front-end with hold-up capacitor charging.

IC Role / Device Role / Timing Role: Half-wave or full-wave rectifier in 230 V AC input stage.

Use Value: 700 V RMS reverse rating (V_R(RMS) = 700 V) supports 230 V AC + 30% overvoltage per IEC 62040-3.

Use Scenario: Snubber network clamp diode in 400 V three-phase motor drive IGBT gate driver circuits.

IC Role / Device Role / Timing Role: Transient voltage clamping element absorbing inductive kickback energy.

Use Value: Fast recovery behavior (inherent in standard Si rectifier) and 1000 V V_RRM prevent breakdown during 600 V switching spikes.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH3L06S	Ultrafast recovery (t_rr = 50 ns), lower V_F (0.95 V), TO-220AC package, 600 V V_RRM	Preferred in high-frequency PFC stages (>100 kHz); not suitable for 1000 V bus applications.	Select when switching frequency >50 kHz and V_RRM ≤ 600 V; requires heatsink due to TO-220 footprint.
ON Semi MUR460E	Fast recovery (t_rr = 60 ns), 600 V V_RRM, 4 A I_F, DO-201AD package, no AEC-Q101	Used in telecom SMPS where speed matters more than automotive qualification.	Choose for cost-sensitive 600 V designs needing faster recovery; lacks AEC-Q101 validation for automotive deployment.

Compared with STTH3L06S and MUR460E, the 1N5408GH offers higher voltage blocking (1000 V), AEC-Q101 qualification, and proven thermal stability in DO-201AD-making it optimal for automotive and industrial 700–1000 V DC systems where reliability outweighs ultrafast switching needs.

Availability

1N5408GH is available at Aetrix Electronics and suitable for automotive power conversion, industrial UPS systems, and renewable energy inverters requiring stable component supply with AEC-Q101 assurance and long-lifecycle support.

Supply support for 1N5408GH 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 automotive, industrial, and consumer markets since 1979.

The 1N540xG series was developed to deliver high-reliability, AEC-Q101 qualified rectifiers for under-hood automotive power modules and ruggedized industrial power supplies operating up to 150 °C.

FAQ

What is the maximum junction temperature rating for the 1N5408GH?

The 1N5408GH has a maximum junction temperature (T_J) of 150 °C, validated across its full operating range per AEC-Q101 stress testing. This rating enables reliable operation in engine compartment environments when mounted on appropriate copper pour or heatsinking. Derating curves in the datasheet define safe I_F limits above 75 °C ambient.

Is the 1N5408GH pin-compatible with legacy 1N5408G parts?

Yes-the 1N5408GH uses identical DO-201AD packaging, anode/cathode pinout, and mechanical dimensions as the non-AEC-Q101 1N5408G. The "H" suffix denotes only enhanced qualification; electrical parameters and board layout remain fully interchangeable without modification.

What does the "H" suffix mean in 1N5408GH?

The "H" suffix in 1N5408GH indicates full AEC-Q101 qualification per Rev D standards, including stress tests for temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing. It confirms suitability for automotive power electronics-not just industrial or commercial use.

How does the forward voltage of 1N5408GH compare to earlier 1N5408 variants?

The 1N5408GH specifies V_F ≤ 1.0 V at I_F = 3 A and T_J = 25 °C-tighter than older 1N5408G versions (≤1.1 V). This reflects process optimization for lower conduction loss, directly reducing thermal load in continuous-duty applications like EV auxiliary converters.

Can the 1N5408GH be used in full-wave bridge configurations?

Yes-the 1N5408GH is a single-diode rectifier optimized for use in discrete full-wave bridge assemblies. Its 1000 V V_RRM, 125 A I_FSM, and DO-201AD lead form factor make it suitable for building custom bridges in high-voltage industrial drives where off-the-shelf modules lack required surge or thermal specs.

1N5408GH 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):: 1000 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 @ 1000 V

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

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Through Hole

Supplier Device Package:: DO-201AD

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

1N5408GH FAQ

1.How can I place an order for 1N5408GH through Aetrix?

Please submit a Request for Quotation (RFQ) for 1N5408GH 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 1N5408GH reliable?

The price and inventory of 1N5408GH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5408GH is usually 5 days.

3.What payment methods are accepted for 1N5408GH?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5408GH transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1N5408GH?

1N5408GH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1N5408GH 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 1N5408GH?

For technical support, including 1N5408GH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5408GH requirements.

6.How does Aetrix verify that 1N5408GH is sourced from the original manufacturer or authorized distributors?

All 1N5408GH 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 1N5408GH meets industry standards.

7.What is the process for return or replacement of 1N5408GH?

All 1N5408GH units undergo pre-shipment inspection (PSI). If there is an issue with 1N5408GH, 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 1N5408GH part is unused and in its original packaging.

Return procedure for 1N5408GH:

1.Submit a request within 90 days.

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

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