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

Taiwan Semiconductor Corporation 1N5406G

Name: 1N5406G
Brand: Taiwan Semiconductor Corporation
SKU: 1N5406G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 1N5406G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-201AD, Axial

Datasheet:: 1N5406G.pdf

Description:: DIODE GEN PURP 600V 3A DO201AD

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Product details

Overview

1N5406G from Taiwan Semiconductor is a glass-passivated, single-die standard silicon rectifier diode rated for 3 A average forward current and 600 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 inverters where high reliability and low conduction loss are required.

For engineers reviewing the 1N5406G datasheet, 1N5406G pinout, 1N5406G application, or 1N5406G equivalent, key selection factors include its DO-201AD package, AEC-Q101 qualification option (1N5406GH), thermal resistance (R_θJA = 45°C/W), and junction temperature range (–55°C to +150°C).

Technical Context

This device operates as a unidirectional power rectifier with a single PN junction, optimized for line-frequency and medium-frequency switching applications. Its glass passivation ensures stable surface characteristics under humidity and thermal stress, while the DO-201AD case supports axial lead mounting and meets UL 94V-0 flammability requirements.

The 1N5406G exhibits typical junction capacitance of 25 pF at 1 MHz and 4.0 V reverse bias, and reverse leakage remains ≤5 µA at 25°C and ≤100 µA at 125°C under rated 600 V reverse voltage - enabling predictable behavior in flyback snubbers and input bridge stages.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	600 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 at T_A = 75°C; sets minimum heatsinking requirement for sustained conduction.
I_FSM	125 A - peak non-repetitive surge current (8.3 ms half-sine); determines robustness against line transients and inrush events.
V_F @ 3 A	≤1.0 V - forward voltage drop at rated current; directly impacts conduction loss (P_cond ≈ 3 A × 1.0 V = 3 W) and thermal design.
R_θJA	45 °C/W - junction-to-ambient thermal resistance in free-air; used to calculate worst-case junction temperature rise (ΔT_J = P_cond × R_θJA).
T_J max	+150 °C - maximum allowable junction temperature; constrains PCB copper area, airflow, and derating curves above 75°C ambient.
C_J	25 pF @ 1 MHz, 4 V - junction capacitance affecting high-frequency switching noise and snubber sizing in SMPS designs.

Pinout & Package

Package: DO-201AD axial-leaded plastic case with cathode band marking; tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance.

Pin/Terminal	Circuit Role	Design Meaning
Anode (unmarked end)	Forward current entry point	Connected to lower-potential side (e.g., transformer secondary center-tap or negative rail) in full-wave configurations.
Cathode (banded end)	Forward current exit / reverse blocking terminal	Marked with visible band; ties to output positive node or filter capacitor anode; must withstand full V_RRM during off-state.

Key Features

Feature	Design Value
Glass-passivated junction	Prevents moisture-induced leakage and surface degradation, extending lifetime in humid industrial environments.
125 A I_FSM rating	Supports repeated cold-start surges in offline power supplies without bond-wire fusing or parameter shift.
RoHS & halogen-free compliance	Meets IEC 61249-2-21; enables use in automotive and consumer electronics requiring strict material declarations.
UL 94V-0 molding compound	Ensures flame-retardant behavior during fault conditions, satisfying safety standards for enclosed power systems.

Applications

AC/DC Power Adapter	Industrial Motor Drive Input Stage
Use Scenario: Converts 100–240 VAC mains to unregulated DC using a 4-diode bridge configuration. IC Role / Device Role / Timing Role: Rectifier diode in full-wave bridge; conducts only during positive half-cycles of each input phase. Use Value: 600 V V_RRM provides 2× margin over 240 VAC peak (≈340 V), and 125 A I_FSM handles startup surges into bulk capacitors.	Use Scenario: Front-end rectification in variable-frequency drive (VFD) input stage feeding DC bus capacitors. IC Role / Device Role / Timing Role: Single-phase or three-phase bridge leg component; blocks reverse voltage during commutation intervals. Use Value: 150°C T_Jmax and 45°C/W R_θJA allow operation at elevated ambient temperatures common in control cabinets.
Solar Microinverter DC Link	Automotive DC-DC Converter
Use Scenario: Boost-stage output rectification in photovoltaic microinverters interfacing panels to grid-tied H-bridge. IC Role / Device Role / Timing Role: High-voltage freewheeling path during MOSFET off-time; recirculates inductor current. Use Value: 25 pF C_J minimizes switching loss and EMI generation at 50–100 kHz switching frequencies typical in microinverters.	Use Scenario: 12 V to 48 V bidirectional DC-DC conversion in 48 V mild-hybrid vehicle architectures. IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier replacement in isolated flyback or forward topologies. Use Value: AEC-Q101 qualified variant (1N5406GH) supports automotive qualification requirements including temperature cycling and mechanical shock.

AC/DC Power Adapter

Industrial Motor Drive Input Stage

Use Scenario: Converts 100–240 VAC mains to unregulated DC using a 4-diode bridge configuration.

IC Role / Device Role / Timing Role: Rectifier diode in full-wave bridge; conducts only during positive half-cycles of each input phase.

Use Value: 600 V V_RRM provides 2× margin over 240 VAC peak (≈340 V), and 125 A I_FSM handles startup surges into bulk capacitors.

Use Scenario: Front-end rectification in variable-frequency drive (VFD) input stage feeding DC bus capacitors.

IC Role / Device Role / Timing Role: Single-phase or three-phase bridge leg component; blocks reverse voltage during commutation intervals.

Use Value: 150°C T_Jmax and 45°C/W R_θJA allow operation at elevated ambient temperatures common in control cabinets.

Solar Microinverter DC Link

Automotive DC-DC Converter

Use Scenario: Boost-stage output rectification in photovoltaic microinverters interfacing panels to grid-tied H-bridge.

IC Role / Device Role / Timing Role: High-voltage freewheeling path during MOSFET off-time; recirculates inductor current.

Use Value: 25 pF C_J minimizes switching loss and EMI generation at 50–100 kHz switching frequencies typical in microinverters.

Use Scenario: 12 V to 48 V bidirectional DC-DC conversion in 48 V mild-hybrid vehicle architectures.

IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier replacement in isolated flyback or forward topologies.

Use Value: AEC-Q101 qualified variant (1N5406GH) supports automotive qualification requirements including temperature cycling and mechanical shock.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH3L06S	TO-220AC package, 3 A / 600 V, 1.15 V V_F, faster recovery (t_rr = 50 ns)	Higher thermal mass, better for forced-air cooled designs; not axial-leaded	Select when board space allows TO-220 and faster recovery reduces snubber losses.
ON Semi MUR460	DO-201AD package, 4 A / 600 V, ultrafast recovery (t_rr = 60 ns), 1.25 V V_F	Higher I_F rating but higher conduction loss; suited for higher-frequency SMPS	Choose when operating >100 kHz and surge margin exceeds 125 A is unnecessary.

Compared with STTH3L06S and MUR460, the 1N5406G offers lowest forward voltage (≤1.0 V) in axial DO-201AD form factor, prioritizing conduction efficiency over speed - ideal for 50/60 Hz and <50 kHz applications where cost and legacy footprint matter.

Availability

1N5406G is available at Aetrix Electronics and suitable for AC/DC power adapters, industrial motor drive input stages, solar microinverter DC links, and automotive DC-DC converters requiring stable component supply across long production lifecycles.

Supply support for 1N5406G 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 automotive markets since 1979.

The 1N5406G belongs to TSC's standard rectifier family designed for cost-sensitive, high-reliability power conversion - emphasizing ruggedness, thermal stability, and compatibility with legacy through-hole manufacturing processes.

FAQ

What is the maximum junction temperature rating for the 1N5406G?

The 1N5406G has a maximum junction temperature (T_J) rating of +150°C. This value defines the upper thermal limit for safe operation and is used with R_θJA = 45°C/W to calculate allowable power dissipation in a given ambient environment. Derating begins above 75°C ambient per the forward current derating curve in the datasheet. The 1N5406G must be mounted with adequate copper area or airflow to prevent exceeding this limit during continuous 3 A conduction.

Is the 1N5406G RoHS and halogen-free compliant?

Yes, the 1N5406G is RoHS compliant and halogen-free per IEC 61249-2-21. Its molding compound contains no brominated flame retardants or chlorine-based additives, and lead content is below 1000 ppm. This compliance enables use in consumer electronics, industrial controls, and automotive subsystems requiring full material declaration and environmental certification. The 1N5406G meets both regulatory and supply-chain sustainability requirements without performance trade-offs.

Does the 1N5406G have AEC-Q101 qualification?

The base 1N5406G is not AEC-Q101 qualified, but the variant 1N5406GH is explicitly qualified per AEC-Q101 Rev D for automotive applications. The "H" suffix denotes qualification testing including temperature cycling, highly accelerated stress test (HAST), and mechanical shock. For automotive-grade deployment - such as in 12 V/48 V DC-DC converters or body control modules - the 1N5406GH must be specified. The 1N5406G remains suitable for industrial and commercial uses where qualification is not mandated.

What is the forward voltage drop of the 1N5406G at 3 A?

The 1N5406G has a maximum forward voltage (V_F) of 1.0 V at I_F = 3 A and T_J = 25°C, per the electrical specifications table. This value increases slightly with junction temperature - typically ~0.95 V at 100°C. The low V_F directly reduces conduction loss (e.g., ~3 W at 3 A), lowering thermal load on PCB traces and adjacent components. This makes the 1N5406G especially efficient in linear-regulated or low-frequency switching supplies where duty cycle is high.

How does the 1N5406G compare to the 1N5408G in terms of voltage rating?

The 1N5406G is rated for 600 V repetitive peak reverse voltage (V_RRM), while the 1N5408G is rated for 1000 V V_RRM. Both share identical current ratings (I_F = 3 A, I_FSM = 125 A), package (DO-201AD), and thermal specs. The 1N5406G is selected when system-level reverse voltage stress stays below 600 V - offering tighter parameter control and potentially lower cost than the 1000 V-rated 1N5408G. Using 1N5406G in a 1000 V application risks premature breakdown and field failure.

1N5406G 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):: 600 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 @ 600 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

1N5406G FAQ

1.How can I place an order for 1N5406G through Aetrix?

Please submit a Request for Quotation (RFQ) for 1N5406G 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 1N5406G reliable?

The price and inventory of 1N5406G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5406G is usually 5 days.

3.What payment methods are accepted for 1N5406G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5406G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1N5406G?

1N5406G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1N5406G 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 1N5406G?

For technical support, including 1N5406G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5406G requirements.

6.How does Aetrix verify that 1N5406G is sourced from the original manufacturer or authorized distributors?

All 1N5406G 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 1N5406G meets industry standards.

7.What is the process for return or replacement of 1N5406G?

All 1N5406G units undergo pre-shipment inspection (PSI). If there is an issue with 1N5406G, 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 1N5406G part is unused and in its original packaging.

Return procedure for 1N5406G:

1.Submit a request within 90 days.

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

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