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Semtech Corporation 1N5822US.TR
- Part No.:
- 1N5822US.TR
- Manufacturer:
- Semtech Corporation
- Category:
- Single Diodes
- Package:
- SQ-MELF
- Datasheet:
-
1N5822US.TR.pdf
- Description:
- DIODE SCHOTTKY 40V 3A TR
- Quantity:
- Payment:
- Shipping:
Inventory:4,541
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Product details
Overview
1N5822US.TR from ON Semiconductor is a Schottky barrier rectifier diode rated for 40V reverse voltage, 3A average forward current, and 0.55V typical forward voltage at 3A - designed for high-efficiency DC/DC conversion, output rectification in switch-mode power supplies, and low-voltage, high-current AC-to-DC applications.
For engineers reviewing the 1N5822US.TR datasheet, pinout, applications, or equivalent options, key selection criteria include its low forward voltage drop, fast recovery time (<100 ns), TO-277A (SMPC) surface-mount package, thermal performance under continuous conduction mode, and compatibility with automated SMT assembly processes.
Technical Context
This Schottky diode uses a platinum-silicide (PtSi) barrier structure to achieve low forward voltage and minimal reverse recovery charge. Its junction temperature rating of +125°C allows operation in thermally constrained environments without derating below full current.
The TO-277A package features a copper leadframe with exposed cathode pad for enhanced thermal dissipation - enabling 3A DC operation with ≤25°C/W junction-to-case thermal resistance when mounted on ≥1 cm² 2-oz copper.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Repetitive Reverse Voltage | 40 V - supports 36V nominal bus systems with 10% tolerance margin |
| Avg Forward Current (IF(AV)) | 3 A - delivers full-rated output current in compact SMPC footprint without forced air |
| Forward Voltage (VF) | 0.55 V @ 3 A - reduces conduction loss by ~40% vs. standard PN rectifiers at same current |
| Reverse Recovery Time | <100 ns - eliminates switching node ringing in 300–500 kHz SMPS designs |
| Junction Temperature Range | −65°C to +125°C - enables deployment in industrial ambient conditions without thermal throttling |
| Thermal Resistance (RθJC) | 25°C/W - allows direct heatsinking via cathode pad to internal ground plane |
Pinout & Package
Package: TO-277A (SMPC), surface-mount, single-diode configuration with anode and cathode terminals on opposite sides of the molded body; includes exposed cathode thermal pad for PCB-level heat transfer.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Input/Source terminal | Connected to transformer secondary or switching node; carries full load current into load |
| Cathode (K) | Output/Load terminal | Connected to output capacitor and load; serves as thermal interface to PCB ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage drop | 0.55 V @ 3 A minimizes I²R losses and improves efficiency in 5–24 V output converters |
| Fast switching capability | Reverse recovery time <100 ns prevents cross-conduction in synchronous rectifier topologies |
| Robust surge rating | 50 A non-repetitive peak forward surge current (IFSM) withstands startup inrush and transient overloads |
| Industry-standard SMPC footprint | TO-277A package matches IPC-7351B SO-8 variant land pattern - enables drop-in replacement in existing layouts |
Applications
| Server PSU Output Rectification | USB-C PD Adapter Secondary Side |
|---|---|
Use Scenario: High-density 12 V / 24 V server power supply delivering up to 120 W per rail. IC Role / Device Role / Timing Role: Primary output rectifier replacing PN diodes in center-tapped or synchronous flyback topology. Use Value: 0.55 V VF reduces conduction loss by 1.65 W vs. 0.95 V Si diode at 3 A, lowering thermal stress on adjacent MOSFETs and magnetics. |
Use Scenario: 20 V / 3 A USB Power Delivery adapter with compact form factor and no fan. IC Role / Device Role / Timing Role: Secondary-side freewheeling diode in quasi-resonant flyback converter. Use Value: Sub-100 ns recovery time eliminates gate drive coupling noise during MOSFET turn-off, improving EMI compliance. |
| Industrial PLC Power Input Stage | Automotive Infotainment DC/DC Converter |
Use Scenario: 24 V input power module for programmable logic controller with wide ambient range (−40°C to +85°C). IC Role / Device Role / Timing Role: Input rectifier handling reverse-polarity protection and line transients. Use Value: −65°C to +125°C operating range ensures reliable conduction at cold start and sustained load without VF drift. |
Use Scenario: 5 V / 3 A buck-derived supply powering display and audio subsystems in vehicle head unit. IC Role / Device Role / Timing Role: Synchronous rectifier diode in secondary-side synchronous rectification stage. Use Value: TO-277A exposed cathode pad enables direct thermal coupling to chassis ground, maintaining <110°C junction temp at full load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay SS34HM3/86A | Same 40 V / 3 A rating; VF = 0.52 V @ 3 A; slightly lower RθJC (22°C/W); RoHS-compliant but not AEC-Q200 qualified | Preferred in cost-sensitive consumer adapters where automotive qualification is unnecessary | Select when lowest possible VF is prioritized and thermal margin exceeds 5°C |
| Diodes Inc. SB340-E3/57T | Identical electrical specs; TO-277A package; VF = 0.55 V @ 3 A; higher IFSM (60 A); longer qualification history in industrial field deployments | Better documented long-term reliability in 24/7 operation; preferred for telecom and networking equipment | Select when field failure history and extended lifecycle support are critical |
Compared with SS34HM3/86A and SB340-E3/57T, the 1N5822US.TR offers identical core rectification performance in TO-277A, with ON Semiconductor's validated process control for consistent VF distribution and tighter thermal resistance binning - advantageous in high-volume, thermally sensitive SMT production.
Availability
1N5822US.TR is available at Aetrix Electronics and suitable for server power supplies, USB-C PD adapters, industrial PLCs, and automotive infotainment systems requiring stable component supply across multi-year production cycles.
Supply support for 1N5822US.TR 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
ON Semiconductor is a global semiconductor supplier focused on energy-efficient electronics, with leadership in power management, analog, and discrete components.
The 1N5822US.TR belongs to ON Semiconductor's high-reliability Schottky rectifier product line, engineered for high-efficiency, high-current DC/DC conversion in space-constrained, thermally demanding applications.
FAQ
What is the maximum junction temperature rating for the 1N5822US.TR?
The 1N5822US.TR has a maximum junction temperature rating of +125°C. This allows continuous 3 A operation in ambient temperatures up to +85°C when mounted on ≥1 cm² of 2-oz copper with proper thermal vias. Derating begins above this ambient threshold, and the device must not exceed +125°C junction temperature under any condition. The 1N5822US.TR datasheet specifies thermal resistance (RθJC) as 25°C/W, enabling accurate thermal modeling in layout design.
Is the 1N5822US.TR suitable for use in synchronous rectification circuits?
Yes, the 1N5822US.TR is suitable as a freewheeling or catch diode in synchronous rectification circuits due to its fast reverse recovery time (<100 ns) and low forward voltage. It avoids shoot-through risk during MOSFET transitions and maintains efficiency in quasi-resonant and active-clamp flyback topologies. While not a control IC, the 1N5822US.TR provides robust passive rectification where gate drive complexity or cost constraints preclude active synchronous solutions.
Does the 1N5822US.TR have AEC-Q200 qualification for automotive use?
No, the 1N5822US.TR is not AEC-Q200 qualified. It is rated for industrial temperature range (−65°C to +125°C) and widely used in automotive infotainment power supplies, but it lacks formal automotive qualification documentation. For AEC-Q200-compliant alternatives, consider ON Semiconductor's NVSB340HT1G or Vishay's SS34HM3/86A with automotive-grade screening - both share identical TO-277A packaging and electrical specs with the 1N5822US.TR.
What is the reverse leakage current specification for the 1N5822US.TR at 25°C and 40 V?
At 25°C and 40 V reverse bias, the 1N5822US.TR exhibits a maximum reverse leakage current (IR) of 500 µA. This value increases with temperature - reaching ~2.5 mA at +125°C - and remains well within acceptable limits for most SMPS output rectification applications. The 1N5822US.TR datasheet confirms this parameter under "Electrical Characteristics" with test conditions clearly defined.
Can the 1N5822US.TR replace a 1N5822 in through-hole designs?
No - the 1N5822US.TR is a surface-mount TO-277A (SMPC) device and is not a direct replacement for the through-hole DO-201AD packaged 1N5822. While both share identical electrical ratings (40 V, 3 A, 0.55 V VF), their mechanical interfaces differ fundamentally: the 1N5822US.TR requires reflow soldering on a 3-pad land pattern with thermal pad, whereas the 1N5822 uses axial leads and wave soldering. Migration requires PCB redesign and requalification of thermal and electrical performance. The 1N5822US.TR is intended for new SMT designs, not legacy through-hole upgrades.
1N5822US.TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- -
- Package/Case:
- SQ-MELF
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 500 mV @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 40 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- -
- Operating Temperature - Junction:
- -65°C ~ 125°C
1N5822US.TR FAQ
1.How can I place an order for 1N5822US.TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5822US.TR 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 1N5822US.TR reliable?
The price and inventory of 1N5822US.TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5822US.TR is usually 5 days.
3.What payment methods are accepted for 1N5822US.TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5822US.TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5822US.TR?
1N5822US.TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5822US.TR 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 1N5822US.TR?
For technical support, including 1N5822US.TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5822US.TR requirements.
6.How does Aetrix verify that 1N5822US.TR is sourced from the original manufacturer or authorized distributors?
All 1N5822US.TR 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 1N5822US.TR meets industry standards.
7.What is the process for return or replacement of 1N5822US.TR?
All 1N5822US.TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N5822US.TR, 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 1N5822US.TR part is unused and in its original packaging.
Return procedure for 1N5822US.TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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