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Diodes Incorporated US1J-13
- Part No.:
- US1J-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
US1J-13.pdf
- Description:
- DIODE GEN PURP 600V 1A SMA
- Quantity:
- Payment:
- Shipping:
Inventory:6,034
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Product details
Overview
US1J-13 from Diodes Incorporated is a 1.0A, 600V ultra-fast surface-mount rectifier diode in SMA package, featuring 50ns reverse recovery time, 1.7V forward voltage at 1.0A, and 30A non-repetitive surge capability - deployed in AC/DC front-end rectification for switch-mode power supplies.
For engineers reviewing the US1J-13 datasheet, US1J-13 pinout, US1J-13 application, or US1J-13 equivalent, key selection criteria include peak repetitive reverse voltage (600V), thermal resistance (30°C/W), RMS reverse voltage rating (420V), junction temperature range (–65°C to +150°C), and RoHS-compliant lead-free plating.
Technical Context
This ultra-fast rectifier uses glass-passivated die construction to achieve tight control of reverse recovery characteristics and minimize switching losses in high-frequency power conversion topologies. Its 50ns trr and low 20pF junction capacitance support operation up to several hundred kHz without significant efficiency degradation.
The device operates with a maximum average rectified current of 1.0A at terminal temperature of +75°C and derates linearly to zero at +150°C. It withstands 30A single half-sine surge (8.3ms) and exhibits only 5.0µA peak reverse leakage at rated 600V DC blocking voltage and +25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - Peak repetitive reverse voltage; defines maximum transient overvoltage the diode blocks during normal operation. |
| trr | 50 ns - Reverse recovery time; enables efficient high-frequency switching in SMPS and PFC stages. |
| VFM @ 1.0A | 1.7 V - Forward voltage drop; determines conduction loss and thermal dissipation at full rated current. |
| IFSM | 30 A - Non-repetitive surge rating; supports inrush current handling during power-up or fault transients. |
| RθJT | 30 °C/W - Junction-to-terminal thermal resistance; informs heatsinking requirements when mounted on PCB copper. |
| IRM @ 25°C | 5.0 µA - Peak reverse leakage; ensures minimal standby power loss in high-impedance bias networks. |
| TJ Range | –65°C to +150°C - Operating junction temperature; validates suitability for industrial and automotive under-hood environments. |
Pinout & Package
Package: SMA (Surface Mount Axial), molded plastic case per UL 94V-0, cathode indicated by band or notch. Terminal plating is matte tin, lead-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to AC input or transformer secondary side; must handle full 1.0A average current and 30A surge peaks. |
| Cathode | Current exit point during forward conduction | Connected to output capacitor or DC bus; polarity marking (band/notch) prevents reverse installation in automated assembly. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die | Ensures stable reverse characteristics and long-term reliability under humidity and thermal cycling stress. |
| Ultra-fast 50ns recovery | Reduces switching loss and EMI generation compared to standard fast recovery diodes (>100ns). |
| 30A surge rating | Withstands repeated cold-start surges in offline AC/DC converters without degradation. |
| SMA package with J-STD-020 Level 1 moisture sensitivity | Enables standard reflow soldering without baking; compatible with high-volume SMT lines. |
Applications
| AC/DC Adapter Front-End | Industrial SMPS Input Stage |
|---|---|
Use Scenario: Rectifying 50/60Hz AC mains after transformer or directly in universal-input offline converters. IC Role / Device Role / Timing Role: Ultra-fast power rectifier providing unidirectional current path with minimal reverse recovery loss. Use Value: 600V VRRM and 50ns trr enable compact filter design and >85% efficiency at 100kHz switching frequencies. | Use Scenario: High-reliability rectification in programmable logic controller (PLC) power modules operating continuously at +70°C ambient. IC Role / Device Role / Timing Role: Primary-side bridge rectifier delivering 1.0A DC output with robust surge tolerance. Use Value: –65°C to +150°C operating range and 30°C/W RθJT allow direct PCB mounting without heatsink in sealed enclosures. |
| LED Driver Input Rectification | Automotive Auxiliary Power Supply |
Use Scenario: Converting rectified AC to DC for constant-current LED driver ICs in commercial lighting fixtures. IC Role / Device Role / Timing Role: Fast-switching rectifier minimizing heat buildup near sensitive analog LED control circuitry. Use Value: Low 5.0µA IRM at 25°C prevents standby current leakage that would reduce dimming resolution or cause flicker. | Use Scenario: Rectifying alternator output or battery-charged DC in 12V/24V automotive auxiliary systems (e.g., infotainment power rails). IC Role / Device Role / Timing Role: High-surge-capable rectifier protecting downstream DC/DC converters from load dump transients. Use Value: 30A IFSM rating and halogen-free "Green" construction meet AEC-Q200 stress test and environmental compliance requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1L06S | 600V VRRM, 1.0A IO, 50ns trr, but TO-277 package (higher RθJA, larger footprint) | Requires different PCB layout and thermal relief; less suitable for dense SMT designs | Prefer US1J-13 for space-constrained, high-density layouts where SMA footprint and lower profile are critical. |
| ES1J | Same 600V/1.0A rating and SMA package, but 75ns trr and 2.0V VFM at 1.0A | Higher conduction and switching losses; limited to ≤60kHz operation | Choose US1J-13 where higher efficiency or higher frequency operation (>80kHz) is required. |
Compared with STTH1L06S and ES1J, US1J-13 delivers identical voltage/current ratings in a smaller, thermally optimized SMA package with superior 50ns recovery and 1.7V forward drop - making it preferred for high-efficiency, high-density, and high-frequency AC/DC rectification.
Availability
US1J-13 is available at Aetrix Electronics and suitable for AC/DC adapters, industrial switch-mode power supplies, LED driver input stages, and automotive auxiliary power supplies requiring stable component supply across multi-year production cycles.
Supply support for US1J-13 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The US1x series belongs to Diodes' ultra-fast rectifier product line, engineered specifically for high-efficiency, high-frequency AC/DC conversion in consumer, industrial, and automotive power supplies.
FAQ
What is the maximum allowable junction temperature for continuous operation of US1J-13?
The US1J-13 has a specified operating junction temperature range of –65°C to +150°C. For continuous operation at full 1.0A average current, the terminal temperature must not exceed +75°C per the derating curve. At higher ambient temperatures, current must be reduced linearly to maintain TJ ≤ +150°C, using RθJT = 30°C/W and appropriate PCB copper area.
Is US1J-13 suitable for use in a bridge rectifier configuration?
Yes - US1J-13 is commonly used as one quadrant in discrete full-wave bridge rectifiers due to its 600V VRRM, 30A surge rating, and ultra-fast recovery. When configured in a bridge, each diode sees only half the peak inverse voltage of the AC input, allowing reliable operation up to 420V RMS input (e.g., 240VAC mains with margin).
Does US1J-13 require a heatsink in typical 1.0A applications?
No external heatsink is required if the PCB provides ≥1 cm² of 2-oz copper connected to both terminals and ambient temperature remains ≤+50°C. The SMA package's RθJT of 30°C/W allows self-heating to stay within limits under these conditions; thermal simulation or measurement is recommended for enclosed or high-ambient deployments.
How does the "Green" designation affect US1J-13's compliance and processing?
The "Green" designation confirms US1J-13 contains <900ppm bromine, <900ppm chlorine (total Br+Cl <1500ppm), and <1000ppm antimony - meeting Diodes Incorporated's halogen- and antimony-free standard. This enables compliance with IPC-1752A material declarations and simplifies end-product environmental reporting without impacting solderability or reliability.
US1J-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 600 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.7 V @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 75 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 600 V
- Capacitance @ Vr, F:
- 10pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMA
- Operating Temperature - Junction:
- -65°C ~ 150°C
US1J-13 FAQ
1.How can I place an order for US1J-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for US1J-13 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 US1J-13 reliable?
The price and inventory of US1J-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for US1J-13 is usually 5 days.
3.What payment methods are accepted for US1J-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for US1J-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for US1J-13?
US1J-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your US1J-13 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 US1J-13?
For technical support, including US1J-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your US1J-13 requirements.
6.How does Aetrix verify that US1J-13 is sourced from the original manufacturer or authorized distributors?
All US1J-13 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 US1J-13 meets industry standards.
7.What is the process for return or replacement of US1J-13?
All US1J-13 units undergo pre-shipment inspection (PSI). If there is an issue with US1J-13, 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 US1J-13 part is unused and in its original packaging.
Return procedure for US1J-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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