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Taiwan Semiconductor Corporation 1N5822
- Part No.:
- 1N5822
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1N5822.pdf
- Description:
- DIODE SCHOTTKY 40V 3A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:5,139
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Product details
Overview
1N5822 from Taiwan Semiconductor is a 40 V, 3 A Schottky barrier rectifier in DO-201AD package, featuring 0.525 V forward voltage at 3 A and 70 A surge capability; used in high-efficiency DC/DC converters and SMPS secondary-side rectification.
For engineers reviewing the 1N5822 datasheet, 1N5822 pinout, 1N5822 application, or 1N5822 equivalent, key selection criteria include its 40 V repetitive peak reverse voltage, low VF for reduced conduction loss, DO-201AD thermal resistance of 40 °C/W, and AEC-Q101 qualification option (1N5822H) for automotive power supplies.
Technical Context
The 1N5822 operates as a single-die, unidirectional Schottky rectifier with metal–semiconductor junction enabling fast switching and low forward voltage. Its guard ring structure provides overvoltage protection, and pure tin-plated leads ensure J-STD-002 solderability.
Rated for continuous 3 A average forward current and 70 A non-repetitive surge (8.3 ms half-sine), it maintains operation from –55 °C to +125 °C junction temperature, with reverse leakage limited to 500 µA at 25 °C and 10 mA at 100 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - maximum repetitive reverse blocking voltage; defines safe operating limit in flyback or buck converter output stage |
| VF @ 3 A, 25°C | 0.525 V - low conduction loss enabling >90% efficiency in 5–12 V output SMPS designs |
| IFSM | 70 A - handles startup surges and transient load steps without failure in adapter applications |
| TJ max | +125 °C - supports operation in enclosed industrial power supplies with limited airflow |
| RθJA | 40 °C/W - requires minimal heatsinking when mounted on 1-in² copper pad for 3 A continuous use |
| IR @ 40 V, 25°C | 500 µA - low leakage preserves standby power budget in energy-efficient adapters |
Pinout & Package
DO-201AD axial-leaded package with cathode band marking; lead-free, RoHS-compliant, UL 94V-0 molded compound; weight ≈1.10 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (lead without band) | Current entry point under forward bias | Connected to lower-potential node (e.g., transformer secondary center-tap or switch node) |
| Cathode (lead with band) | Current exit point under forward bias | Connected to output rail; polarity marking prevents reverse installation in PCB layout |
Key Features
| Feature | Design Value |
|---|---|
| Low VF Schottky junction | 0.525 V @ 3 A enables <0.5 W conduction loss at full load, reducing thermal stress vs. silicon diodes |
| Guard ring overvoltage protection | Enhances ruggedness against line transients and inductive kickback in unregulated DC/DC outputs |
| AEC-Q101 qualified variant available | 1N5822H meets automotive-grade reliability for engine control module power rails and body electronics |
| High IFSM / IF ratio (23×) | Supports robust start-up in battery-powered converters where inrush currents exceed steady-state by >20× |
Applications
| SMPS Secondary Rectification | USB-C PD Adapters |
|---|---|
Use Scenario: High-frequency flyback converter output stage delivering 5–20 V at up to 3 A. IC Role / Device Role / Timing Role: Uncontrolled rectifier converting transformer AC output to regulated DC; replaces slower silicon diodes to minimize switching losses. Use Value: 0.525 V VF reduces conduction loss by ~40% vs. 1N5408, improving thermal margin and enabling smaller heatsinks. | Use Scenario: Compact 65 W USB-C power adapter with multi-output buck-boost architecture. IC Role / Device Role / Timing Role: Output rectifier in synchronous or quasi-resonant topology; selected for fast recovery and low EMI generation. Use Value: 70 A IFSM withstands repeated 5 A load-step transients during protocol negotiation without degradation. |
| Automotive DC/DC Converters | Industrial IoT Power Modules |
Use Scenario: 12 V to 3.3 V/5 V step-down converter in telematics control unit (TCU). IC Role / Device Role / Timing Role: Secondary-side freewheeling diode in buck regulator; operates across –40 °C to +105 °C ambient. Use Value: AEC-Q101-qualified 1N5822H variant ensures 15-year field reliability under automotive thermal cycling and vibration. | Use Scenario: DIN-rail mounted 24 V input power module supplying sensors and microcontrollers in factory automation. IC Role / Device Role / Timing Role: Input protection and output rectification in dual-stage isolated DC/DC design. Use Value: DO-201AD package with 40 °C/W RθJA allows derating to 2.2 A at 70 °C ambient-sufficient for 24 V/2 A nominal loads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STPS340A | 40 V, 3 A, VF = 0.52 V @ 3 A; TO-220AC package (RθJA ≈ 50 °C/W) | Higher thermal resistance requires heatsink for same 3 A continuous load; larger footprint | Prefer when board space allows TO-220 mounting and higher surge margin is needed (IFSM = 100 A) |
| SS34 | 40 V, 3 A, VF = 0.55 V @ 3 A; DO-214AC (SMC) package, surface-mount | No through-hole leads; different thermal path and reflow profile; not drop-in for DO-201AD footprints | Choose for automated SMT assembly; verify PCB pad thermal relief and reflow profile compatibility |
Compared with STPS340A and SS34, the 1N5822 offers optimal balance of low VF, axial-leaded DO-201AD mechanical robustness, and proven field reliability in cost-sensitive through-hole power supplies-without requiring heatsinks below 2.5 A or layout redesign.
Availability
1N5822 is available at Aetrix Electronics and suitable for switching mode power supplies, USB-C adapters, and automotive DC/DC converters requiring stable component supply and long-term manufacturability.
Supply support for 1N5822 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 1N58xx Schottky rectifier series targets high-efficiency, cost-sensitive power conversion-designed specifically for secondary-side rectification in compact, thermally constrained AC/DC and DC/DC systems.
FAQ
What is the maximum repetitive peak reverse voltage rating for the 1N5822?
The 1N5822 has a VRRM rating of 40 V, meaning it can block up to 40 V of reverse voltage continuously without breakdown. This value is confirmed in the Absolute Maximum Ratings table of the Taiwan Semiconductor datasheet (Version I2105), and applies strictly to the 1N5822-not the 1N5820 (20 V) or 1N5821 (30 V). Exceeding 40 V risks avalanche failure.
What is the forward voltage drop of the 1N5822 at its rated 3 A current?
The 1N5822 exhibits a typical forward voltage (VF) of 0.525 V at 3 A and 25 °C junction temperature, per the Electrical Specifications table. This value is measured under pulsed conditions (PW = 0.3 ms) to avoid self-heating. At elevated temperatures or DC operation, VF decreases slightly due to negative temperature coefficient of Schottky diodes.
Is the 1N5822 available in an AEC-Q101 qualified version?
Yes-the 1N5822H is the AEC-Q101 qualified variant of the 1N5822, explicitly listed in the Ordering Information section. It shares identical electrical and thermal specifications but undergoes additional stress testing for automotive applications, including temperature cycling, humidity bias, and accelerated life testing per AEC-Q101 Rev D.
What package type does the 1N5822 use, and how is polarity marked?
The 1N5822 uses the DO-201AD axial-leaded package, with polarity indicated by a visible cathode band on one lead end. The band identifies the cathode terminal, which must connect toward the positive output rail. Mechanical dimensions and lead finish (pure tin plating) comply with J-STD-002 for reliable solder wetting.
How does the 1N5822 compare to standard PN-junction rectifiers like the 1N4007 in power supply designs?
The 1N5822 delivers significantly lower forward voltage (0.525 V vs. ~0.9 V for 1N4007 at 1 A), enabling higher efficiency and cooler operation in SMPS outputs. Unlike the 1N4007, it has no minority-carrier storage delay-eliminating reverse recovery loss-but trades off higher reverse leakage (500 µA vs. <5 µA), making it unsuitable for high-impedance hold-up circuits.
1N5822 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-201AD, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 525 mV @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 40 V
- Capacitance @ Vr, F:
- 200pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -55°C ~ 125°C
1N5822 FAQ
1.How can I place an order for 1N5822 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5822 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 1N5822 reliable?
The price and inventory of 1N5822 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5822 is usually 5 days.
3.What payment methods are accepted for 1N5822?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5822 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5822?
1N5822 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5822 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 1N5822?
For technical support, including 1N5822 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5822 requirements.
6.How does Aetrix verify that 1N5822 is sourced from the original manufacturer or authorized distributors?
All 1N5822 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 1N5822 meets industry standards.
7.What is the process for return or replacement of 1N5822?
All 1N5822 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5822, 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 1N5822 part is unused and in its original packaging.
Return procedure for 1N5822:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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