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Diodes Incorporated US1M-13
- Part No.:
- US1M-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
US1M-13.pdf
- Description:
- DIODE GEN PURP 1KV 1A SMA
- Quantity:
- Payment:
- Shipping:
Inventory:6,497
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Product details
Overview
US1M-13 from Diodes Incorporated is a 1.0A, 1000V 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-designed for high-frequency switching power supplies and AC/DC adapters.
For engineers reviewing the US1M-13 datasheet, US1M-13 pinout, US1M-13 application, or US1M-13 equivalent, key selection criteria include peak repetitive reverse voltage (1000V), thermal resistance (30°C/W), junction temperature range (–65°C to +150°C), and RoHS-compliant lead-free plating for automated SMT assembly.
Technical Context
This ultra-fast rectifier uses glass passivated die construction to achieve stable reverse characteristics and low leakage (<5.0µA at 25°C, <100µA at 100°C). Its 50ns trr enables efficient operation in PFC stages and high-frequency flyback converters where switching losses must be minimized.
The SMA package provides a compact, moisture-insensitive (J-STD-020 Level 1) surface-mount solution with cathode band polarity marking and 0.064g mass-optimized for reflow soldering and high-density PCB layouts in industrial and consumer power electronics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - Maximum repetitive reverse voltage; defines safe blocking capability in bridge or output rectification under transient overvoltage conditions. |
| IO @ TT=75°C | 1.0 A - Average rectified current rating at terminal temperature of 75°C; determines continuous DC output capability in thermally constrained designs. |
| VFM @ IF=1.0A | 1.7 V - Forward voltage drop at rated current; directly impacts conduction loss and thermal design in high-efficiency SMPS. |
| trr | 50 ns - Reverse recovery time measured at IF=0.5A, IR=1.0A, Irr=0.25A; critical for minimizing switching loss and EMI in >100kHz topologies. |
| RθJT | 30 °C/W - Junction-to-terminal thermal resistance; enables accurate junction temperature estimation when mounted on copper pads per AP02001 layout. |
| IFSM | 30 A - Non-repetitive surge current (8.3ms half-sine); supports inrush current handling during cold-start in offline power supplies. |
Pinout & Package
SMA (DO-214AC) surface-mount package: molded plastic case (UL 94V-0), cathode band polarity marking, matte tin-plated terminals, 0.064g weight, and J-STD-020 Level 1 moisture sensitivity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to AC input or transformer secondary side; requires adequate copper area for thermal dissipation. |
| Cathode | Current exit point during forward conduction; marked by band | Connected to output capacitor or load return; polarity must match PCB silkscreen and schematic symbol. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die | Ensures stable reverse leakage and long-term reliability under humidity and thermal cycling stress. |
| Ultra-fast 50ns recovery | Reduces switching loss and diode-induced ringing in high-frequency DC/DC converters and PFC circuits. |
| 30A surge rating | Withstands line-voltage transients and startup surges without degradation in AC/DC front-end applications. |
| Lead-free & halogen-free | Meets RoHS 2 and JEDEC green standards (<900ppm Br/Cl, <1000ppm Sb); compatible with lead-free reflow profiles. |
Applications
| Switch-Mode Power Supply Output Rectification | AC/DC Adapter Input Bridge |
|---|---|
Use Scenario: High-efficiency 65W laptop adapter with 100kHz flyback topology and active clamp circuitry. IC Role / Device Role / Timing Role: Output rectifier conducting DC current to bulk capacitor; operates in discontinuous conduction mode with fast turn-off requirement. Use Value: 50ns trr minimizes reverse recovery loss and reduces snubber component count versus standard fast recovery diodes. | Use Scenario: Universal-input (90–264VAC) wall-wart with full-wave bridge configuration. IC Role / Device Role / Timing Role: One leg of discrete bridge rectifier converting AC line to pulsating DC before bulk capacitor filtering. Use Value: 1000V VRRM ensures margin against 1.414×264VAC × safety derating, enabling robust operation across global mains voltages. |
| LED Driver Secondary Side | Industrial PLC Power Input Stage |
Use Scenario: Constant-current LED driver for street lighting with isolated flyback and secondary-side synchronous rectification assist. IC Role / Device Role / Timing Role: Freewheeling path for transformer leakage energy; clamps voltage spikes during MOSFET turn-off. Use Value: Low 1.7V VFM reduces conduction loss in high-current LED strings, improving overall driver efficiency above 85%. | Use Scenario: DIN-rail mounted programmable logic controller with wide-input-range (85–305VAC) front-end. IC Role / Device Role / Timing Role: Input rectifier in EMC-filtered bridge stage; subjected to frequent lightning-induced surges. Use Value: 30A IFSM rating withstands 10/1000µs surge events per IEC 61000-4-5 Level 3 without parameter shift or failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R06S | 600V VRRM, 55ns trr, TO-277 package (single-diode variant of STTH1L06) | Limited to ≤600V AC line applications; higher thermal resistance (45°C/W) than US1M-13 | Select when lower cost and legacy TO-277 footprint required, but derate voltage margin accordingly. |
| ES1M | Same 1000V/1A rating, 50ns trr, but in SMB package (larger footprint, higher RθJA) | Lower power density due to larger package; less suitable for ultra-thin adapters | Choose only if board space allows SMB and thermal pad access is restricted for SMA mounting. |
Compared with STTH1R06S and ES1M, US1M-13 delivers superior voltage margin (1000V vs. 600V/1000V) and thermal performance (30°C/W vs. 45°C/W/40°C/W), making it optimal for compact, globally rated AC/DC converters requiring high reliability and minimal footprint.
Availability
US1M-13 is available at Aetrix Electronics and suitable for switch-mode power supply output rectification, AC/DC adapter input bridges, LED driver secondary-side freewheeling, and industrial PLC power input stages requiring stable component supply and long-lifecycle support.
Supply support for US1M-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-frequency power conversion applications demanding low forward voltage, fast recovery, and robust surge tolerance in compact surface-mount packages.
FAQ
What is the maximum junction temperature for US1M-13?
The US1M-13 has an operating junction temperature range of –65°C to +150°C, verified per the DS16008 datasheet. This rating applies under specified thermal conditions using the recommended SMA pad layout (AP02001) and assumes proper PCB copper area for heat spreading.
Is US1M-13 suitable for use in a PFC boost diode position?
Yes-its 50ns reverse recovery time, 1000V blocking voltage, and 30A surge rating make it appropriate for continuous-conduction-mode (CCM) PFC boost stages up to 200kHz. However, for >300kHz operation, consider ultrafast diodes with trr ≤35ns.
Does US1M-13 have a specified reverse recovery charge (Qrr)?
No-Qrr is not published in DS16008 Rev. 11-2. The datasheet specifies only trr (50ns) under defined test conditions (IF=0.5A, IR=1.0A, Irr=0.25A). For Qrr-sensitive designs, consult Diodes Incorporated's application engineering team or select parts with documented Qrr values.
Can US1M-13 replace US1J-13 in an existing design?
Yes-US1M-13 is a direct upgrade from US1J-13 (600V → 1000V), sharing identical SMA package, pinout, thermal specs, and forward characteristics. No layout change is needed, and the higher VRRM improves safety margin in universal-input or high-line applications.
US1M-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):
- 1000 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 @ 1000 V
- Capacitance @ Vr, F:
- 10pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMA
- Operating Temperature - Junction:
- -65°C ~ 150°C
US1M-13 FAQ
1.How can I place an order for US1M-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for US1M-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 US1M-13 reliable?
The price and inventory of US1M-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for US1M-13 is usually 5 days.
3.What payment methods are accepted for US1M-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for US1M-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for US1M-13?
US1M-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your US1M-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 US1M-13?
For technical support, including US1M-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your US1M-13 requirements.
6.How does Aetrix verify that US1M-13 is sourced from the original manufacturer or authorized distributors?
All US1M-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 US1M-13 meets industry standards.
7.What is the process for return or replacement of US1M-13?
All US1M-13 units undergo pre-shipment inspection (PSI). If there is an issue with US1M-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 US1M-13 part is unused and in its original packaging.
Return procedure for US1M-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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