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Taiwan Semiconductor Corporation 1N5400G-K
- Part No.:
- 1N5400G-K
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1N5400G-K.pdf
- Description:
- 3A, 50V, STANDARD RECTIFIER
- Quantity:
- Payment:
- Shipping:
Inventory:4,278
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Product details
Overview
1N5400G-K from Taiwan Semiconductor is a glass-passivated standard silicon rectifier diode rated for 3 A average forward current, 50 V repetitive peak reverse voltage (VRRM), and 125 A non-repetitive surge current (IFSM). It features low forward voltage drop (≤1.1 V at 3 A, 25°C), DO-201AD axial package, and is used in DC-DC converters and switching-mode power supplies.
For engineers reviewing the 1N5400G-K datasheet, 1N5400G-K pinout, 1N5400G-K application, or 1N5400G-K equivalent, key selection criteria include verified VRRM = 50 V, IF = 3 A continuous rating, thermal resistance RθJA = 45 °C/W, RoHS/halogen-free compliance, and cathode-band polarity marking.
Technical Context
This device is a single-die, unidirectional, PN-junction rectifier optimized for general-purpose AC-to-DC conversion in medium-power applications. Its glass-passivated junction ensures stable leakage performance and high reliability under thermal cycling and humidity stress.
Designed for operation up to 150°C junction temperature, it delivers 1.1 V max forward voltage at full rated current and exhibits only 5 µA max reverse leakage at 25°C - critical for efficiency-sensitive offline power stages and low-quiescent designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - maximum repetitive reverse voltage before breakdown; defines safe AC input voltage headroom in bridge or half-wave rectifiers |
| IF | 3 A - continuous average forward current; determines heatsink sizing and duty-cycle limits in linear or SMPS front-end stages |
| IFSM | 125 A - 8.3 ms single half-sine surge rating; supports inrush current handling during cold-start of capacitive-input supplies |
| VF | ≤1.1 V @ 3 A, 25°C - low conduction loss improves system efficiency and reduces thermal load on PCB traces |
| RθJA | 45 °C/W - junction-to-ambient thermal resistance; enables natural-convection cooling in compact industrial power modules |
| Junction temp | −55°C to +150°C - wide operating range supports automotive under-hood and industrial ambient environments |
Pinout & Package
Package: DO-201AD axial leaded case with cathode band marking; UL 94V-0 molded compound; pure tin-plated leads compliant with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Forward current entry point | Connected to AC source or transformer secondary in half-wave configuration; requires adequate trace width for 3 A RMS |
| Cathode (banded end) | Forward current exit / reverse blocking terminal | Connected to filter capacitor or load return; polarity must be observed to prevent catastrophic failure |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Prevents moisture ingress and metallization corrosion, enabling >10-year field life in humid industrial enclosures |
| Low VF (≤1.1 V) | Reduces power dissipation by ~0.33 W vs. legacy 1N540x variants, lowering thermal stress in dense layouts |
| RoHS & halogen-free | Complies with IEC 61249-2-21; eliminates brominated flame retardants for safer end-of-life recycling |
| 125 A surge rating | Withstands repeated cold-start surges in 120 VAC-fed SMPS without degradation or parametric shift |
Applications
| DC–DC Converter Front-End | Switching Inverter Output Stage |
|---|---|
Use Scenario: Rectifying high-frequency transformer output in isolated flyback or forward converters. IC Role / Device Role / Timing Role: Primary-side unidirectional current valve converting AC pulses to regulated DC bus. Use Value: Low VF minimizes conduction loss at 3 A, improving overall converter efficiency by ≥0.8% at full load. | Use Scenario: Output rectification in single-phase H-bridge inverters driving resistive or inductive loads. IC Role / Device Role / Timing Role: Freewheeling path for inductive kickback and bidirectional energy recovery. Use Value: 125 A IFSM safely clamps transient overcurrents during motor stall or short-circuit events. |
| Industrial AC/DC Power Supply | General-Purpose Line-Frequency Rectification |
Use Scenario: Bridge rectifier leg in 24 V/3 A industrial power supplies with wide ambient temperature range. IC Role / Device Role / Timing Role: Half-wave or full-wave rectifier element in capacitor-input filter stage. Use Value: 150°C max junction temperature allows operation in sealed enclosures without forced air cooling. | Use Scenario: Low-cost AC adapter or battery charger rectification where cost and reliability are prioritized. IC Role / Device Role / Timing Role: Standard line-frequency (50/60 Hz) rectifier with minimal BOM count. Use Value: DO-201AD package enables automated axial insertion and wave soldering, reducing assembly cost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5400G | Same electrical specs and DO-201AD package; differs only in packaging format (tape-and-reel vs. bulk) | No functional difference; suitable for same circuits but may require different feeder setup in SMT lines | Select 1N5400G-K when tape-and-reel delivery is required for automated placement |
| 1N5400 | Lacks "G-K" suffix; older revision with non-halogen-free molding compound and no JESD 201 whisker test compliance | Not qualified for halogen-free or high-reliability industrial programs requiring whisker resistance | Choose 1N5400G-K for new designs requiring RoHS/halogen-free compliance and long-term supply stability |
Compared with 1N5400G and legacy 1N5400, the 1N5400G-K provides identical rectification performance while adding halogen-free construction, JESD 201 Class 1A whisker resistance, and standardized tape-and-reel packaging - making it the preferred choice for new industrial and automotive-adjacent designs.
Availability
1N5400G-K is available at Aetrix Electronics and suitable for DC–DC converters, switching inverters, and industrial AC/DC power supplies requiring stable component supply, long-lifecycle support, and RoHS-compliant sourcing.
Supply support for 1N5400G-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 global industrial, computing, and consumer markets since 1979.
The 1N5400G-K belongs to TSC's standard rectifier product line, engineered for cost-effective, high-reliability AC/DC conversion in medium-current power supplies and industrial equipment.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for the 1N5400G-K?
The 1N5400G-K has a VRRM rating of 50 V, meaning it can block up to 50 V of reverse voltage repeatedly without breakdown. This value is fixed for this specific variant - other members of the 1N540xG-K family offer higher ratings (e.g., 1N5408G-K = 1000 V). Exceeding 50 V risks irreversible avalanche failure.
Does the 1N5400G-K have a specified forward voltage (VF) at full rated current?
Yes - the 1N5400G-K has a maximum forward voltage of 1.1 V at 3 A and 25°C junction temperature, measured under pulsed conditions (0.3 ms pulse width). This VF value is confirmed in the Electrical Specifications table and directly impacts conduction losses in power stage design.
Is the 1N5400G-K RoHS and halogen-free compliant?
Yes - the 1N5400G-K meets RoHS Directive 2011/65/EU and is halogen-free per IEC 61249-2-21. Its green molding compound contains no brominated flame retardants, and its pure tin-plated leads satisfy J-STD-002 solderability requirements.
What is the thermal resistance from junction to ambient (RθJA) for the 1N5400G-K?
The 1N5400G-K has a typical RθJA of 45 °C/W when mounted on a standard FR-4 PCB with 1-inch² copper pad. This value assumes no external heatsink and defines the temperature rise above ambient at 3 A continuous current - critical for thermal derating calculations.
How is polarity indicated on the 1N5400G-K package?
Polarity is marked by a visible cathode band on the DO-201AD body - the banded end is the cathode terminal. This marking aligns with industry-standard axial diode conventions and must be observed during PCB layout and assembly to ensure correct forward biasing.
1N5400G-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):
- 50 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 @ 50 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
1N5400G-K FAQ
1.How can I place an order for 1N5400G-K through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5400G-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 1N5400G-K reliable?
The price and inventory of 1N5400G-K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5400G-K is usually 5 days.
3.What payment methods are accepted for 1N5400G-K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5400G-K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5400G-K?
1N5400G-K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5400G-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 1N5400G-K?
For technical support, including 1N5400G-K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5400G-K requirements.
6.How does Aetrix verify that 1N5400G-K is sourced from the original manufacturer or authorized distributors?
All 1N5400G-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 1N5400G-K meets industry standards.
7.What is the process for return or replacement of 1N5400G-K?
All 1N5400G-K units undergo pre-shipment inspection (PSI). If there is an issue with 1N5400G-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 1N5400G-K part is unused and in its original packaging.
Return procedure for 1N5400G-K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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