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Taiwan Semiconductor Corporation 1N5401G-K
- Part No.:
- 1N5401G-K
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1N5401G-K.pdf
- Description:
- 3A, 100V, STANDARD RECOVERY RECT
- Quantity:
- Payment:
- Shipping:
Inventory:8,689
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Product details
Overview
1N5401G-K from Taiwan Semiconductor is a glass-passivated standard silicon rectifier diode rated for 3 A average forward current and 100 V repetitive peak reverse voltage in a DO-201AD package, with 1.1 V max forward voltage at 3 A and 125 A non-repetitive surge capability - used in DC-DC converters and switching-mode power supplies.
For engineers reviewing the 1N5401G-K datasheet, 1N5401G-K pinout, 1N5401G-K application, or 1N5401G-K equivalent, key selection criteria include VRRM = 100 V, IF = 3 A, VF ≤ 1.1 V @ 3 A, IFSM = 125 A, and DO-201AD mechanical compatibility with through-hole PCB layouts.
Technical Context
This single-die, axial-leaded rectifier operates as a unidirectional current-conducting device with cathode-band polarity marking, optimized for line-frequency and medium-frequency switching applications up to 60 Hz. Its glass-passivated junction ensures stable leakage performance (IR ≤ 5 µA @ 25°C) and thermal robustness across -55°C to +150°C junction range.
Thermal design relies on RθJA = 45°C/W and RθJC = 15°C/W values, supporting conduction cooling in compact power stages. The DO-201AD package uses pure tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 1A whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - maximum allowable reverse voltage before breakdown; defines safe operating margin in 70–100 V DC bus or AC line-derived circuits |
| IF | 3 A - continuous average forward current rating; sets minimum heatsinking and trace width requirements for sustained load operation |
| VF | ≤ 1.1 V @ 3 A - forward voltage drop directly determines conduction loss (Pcond ≈ 3.3 W) and thermal rise in power stage |
| IFSM | 125 A - peak non-repetitive surge current handling; supports inrush current tolerance during cold-start of SMPS or motor drives |
| TJ max | +150°C - maximum junction temperature; enables reliable operation in enclosed industrial enclosures without forced airflow |
| CJ | 25 pF @ 1 MHz, 4 V - junction capacitance impacts high-frequency switching noise and EMI filter design in flyback or boost converters |
Pinout & Package
DO-201AD package: axial-lead, molded epoxy case with cathode band marking; lead finish is pure tin, RoHS-compliant and halogen-free per IEC 61249-2-21.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Forward current entry point | Connects to lower-potential side (e.g., transformer secondary center-tap or switch node return path) |
| Cathode (banded end) | Forward current exit point | Connects to output capacitor positive rail or load input; polarity must be observed to prevent reverse conduction failure |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable IR ≤ 5 µA @ 25°C and long-term reliability under humidity and thermal cycling stress |
| Low VF (≤ 1.1 V @ 3 A) | Reduces conduction losses by ~15% vs. legacy 1N54xx variants, improving efficiency in 12–48 V output SMPS designs |
| 125 A IFSM rating | Supports >40× overload margin over IF, allowing use in high-inrush applications like LED driver startup or capacitor charging circuits |
| DO-201AD mechanical compliance | Meets UL 94V-0 flammability and JESD201 Class 1A whisker standards - suitable for safety-critical industrial and telecom power supplies |
Applications
| DC-DC Converter Output Rectification | Switching Mode Inverter Input Stage |
|---|---|
Use Scenario: Rectifying high-frequency transformer secondary output in isolated 24 V/3 A offline DC-DC converter. IC Role / Device Role / Timing Role: Power diode conducting unidirectional current during transformer demagnetization phase; replaces synchronous FET where cost sensitivity dominates. Use Value: 1.1 V VF limits conduction loss to 3.3 W, enabling natural convection cooling without heatsink in 25 mm × 25 mm board area. | Use Scenario: Front-end AC-to-DC rectification in 1 kW solar microinverter input stage. IC Role / Device Role / Timing Role: Standard rectifier converting 100 VAC RMS (≈140 V peak) to DC bus; operates at line frequency with minimal switching loss. Use Value: 100 V VRRM provides 40% margin above 140 V peak, ensuring robustness against line surges and transformer ringing. |
| Industrial AC Adapter Input Bridge | General-Purpose Power Supply Filtering |
Use Scenario: One leg of full-wave bridge rectifier in 12 V/2.5 A wall adapter for PLC I/O modules. IC Role / Device Role / Timing Role: Discrete rectifier element in discrete bridge configuration; handles 3 A average current with low thermal resistance. Use Value: RθJA = 45°C/W allows operation at 75°C ambient without derating, meeting EN 60335-1 temperature limits. | Use Scenario: Bulk rectification in benchtop lab power supply with adjustable 0–30 V output. IC Role / Device Role / Timing Role: Main AC-input rectifier feeding bulk capacitor; selected for proven field reliability and low-cost replacement availability. Use Value: Glass passivation and 150°C TJ max ensure >10-year MTBF in continuously powered test equipment environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar standard rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5401RLG | VRRM = 100 V, same IF/IFSM, but TO-220AC package with mounting tab; VF = 1.0 V typ | Requires heatsink and screw-mount footprint; suited for higher-power or forced-air-cooled systems | Select when thermal dissipation exceeds DO-201AD capability or when mechanical mounting stability is critical |
| STTH3L06S | Ultrafast recovery (trr = 50 ns), VF = 0.95 V typ, but IF = 3 A avg, VRRM = 600 V | Lower switching loss in high-frequency (>50 kHz) topologies; over-specified VRRM increases cost | Select only if reducing EMI or improving light-load efficiency in >100 kHz SMPS outweighs cost premium |
Compared with 1N5401RLG and STTH3L06S, the 1N5401G-K offers optimal balance of cost, thermal performance, and footprint for line-frequency and <50 kHz switching applications - especially where DO-201AD form factor and proven reliability are prioritized over ultrafast recovery or heatsink integration.
Availability
1N5401G-K is available at Aetrix Electronics and suitable for DC-DC converters, switching mode inverters, and general-purpose power supplies requiring stable component supply, long-lifecycle support, and RoHS/halogen-free compliance.
Supply support for 1N5401G-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 1N540xG-K series belongs to TSC's standard rectifier product line, engineered for cost-sensitive, high-reliability AC/DC front-end and DC-DC output rectification in industrial power supplies and embedded systems.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for the 1N5401G-K?
The 1N5401G-K has a VRRM rating of 100 V, verified in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version C2105). This value defines the highest reverse voltage the diode can block repeatedly without breakdown and is strictly limited to this value - not shared across the 1N5400G-K to 1N5408G-K family.
Does the 1N5401G-K have a specified forward voltage (VF) at 3 A?
Yes, the 1N5401G-K specifies VF ≤ 1.1 V at IF = 3 A and TJ = 25°C, per the Electrical Specifications table. This is distinct from higher-voltage variants (e.g., 1N5402G-K and above), which specify VF ≤ 1.0 V under identical conditions.
Is the 1N5401G-K RoHS and halogen-free compliant?
Yes, the 1N5401G-K is RoHS compliant and halogen-free per IEC 61249-2-21, as explicitly stated in the FEATURES section of the Taiwan Semiconductor datasheet. The "G" suffix denotes green compound, and the "-K" suffix confirms tape-and-reel packaging with compliant materials.
What is the package type and lead finish of the 1N5401G-K?
The 1N5401G-K uses the DO-201AD package with pure tin-plated leads, confirmed in the MECHANICAL DATA section. It meets J-STD-002 solderability requirements and JESD201 Class 1A whisker resistance - critical for long-term reliability in industrial PCB assemblies.
Can the 1N5401G-K replace the 1N5400G-K in a design?
No - the 1N5401G-K (VRRM = 100 V) is not a drop-in replacement for the 1N5400G-K (VRRM = 50 V) unless the circuit's reverse voltage stress remains below 50 V. Exceeding 50 V risks catastrophic failure. Always verify actual reverse voltage transients in the target application before substituting.
1N5401G-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):
- 100 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 3 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 5 µA @ 100 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
1N5401G-K FAQ
1.How can I place an order for 1N5401G-K through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5401G-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 1N5401G-K reliable?
The price and inventory of 1N5401G-K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5401G-K is usually 5 days.
3.What payment methods are accepted for 1N5401G-K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5401G-K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5401G-K?
1N5401G-K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5401G-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 1N5401G-K?
For technical support, including 1N5401G-K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5401G-K requirements.
6.How does Aetrix verify that 1N5401G-K is sourced from the original manufacturer or authorized distributors?
All 1N5401G-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 1N5401G-K meets industry standards.
7.What is the process for return or replacement of 1N5401G-K?
All 1N5401G-K units undergo pre-shipment inspection (PSI). If there is an issue with 1N5401G-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 1N5401G-K part is unused and in its original packaging.
Return procedure for 1N5401G-K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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