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Diodes Incorporated US1M-13-F
- Part No.:
- US1M-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
US1M-13-F.pdf
- Description:
- DIODE GEN PURP 1KV 1A SMA
- Quantity:
- Payment:
- Shipping:
Inventory:42,607
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Product details
Overview
US1M-13-F from Diodes Incorporated is a 1.0A, 1000V peak repetitive reverse voltage ultra-fast recovery surface-mount rectifier in SMA package, with 50ns reverse recovery time, 1.7V forward voltage at 1.0A, and 30A non-repetitive surge rating - used in switch-mode power supply output stages and AC/DC front-end rectification.
For engineers reviewing the US1M-13-F datasheet, US1M-13-F pinout, US1M-13-F application, or US1M-13-F equivalent, key selection criteria include reverse voltage margin, thermal resistance (30°C/W), surge robustness (30A), fast recovery for high-frequency operation, and RoHS-compliant lead-free plating for automated assembly.
Technical Context
This ultra-fast rectifier employs glass passivated die construction to ensure stable junction performance under thermal cycling and high dv/dt stress. Its 50ns trr enables efficient operation in 100–500kHz SMPS topologies where reverse recovery losses must be minimized.
The device operates across –65°C to +150°C with a maximum junction-to-terminal thermal resistance of 30°C/W, supporting high-density PCB layouts where heat conduction through the cathode band and solder joint is critical for reliability at 1.0A average current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - Withstands peak reverse transients up to 1 kV without breakdown in bridge or flyback configurations. |
| IO @ TT=75°C | 1.0 A - Sustains continuous DC output current in compact power supplies with adequate heatsinking via PCB copper. |
| trr | 50 ns - Minimizes switching loss and EMI generation during turn-off in high-frequency converters. |
| VFM @ IF=1.0A | 1.7 V - Determines conduction loss (1.7W at 1A), directly impacting thermal design and efficiency at full load. |
| IFSM (8.3ms) | 30 A - Survives inrush currents from bulk capacitors or short-circuit events without parametric shift or failure. |
| RθJT | 30 °C/W - Defines temperature rise from junction to terminal; requires ≥100 mm² 2-oz copper pad for safe 1A operation at +75°C ambient. |
| IRM @ 100°C | 100 µA - Low leakage preserves hold-up time in standby mode and reduces no-load power consumption. |
Pinout & Package
SMA (DO-214AC) surface-mount package with molded plastic case (UL 94V-0), cathode identified by band or notch, matte tin-plated terminals, and 0.064g mass. Designed for reflow soldering per J-STD-020 Level 1 moisture sensitivity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input current entry point | Connected to AC source or transformer secondary; must withstand full reverse voltage when reverse-biased. |
| Cathode | Output current exit point | Connected to output capacitor or load; serves as primary thermal path to PCB; polarity mark location. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die | Prevents surface contamination and moisture ingress, ensuring long-term parameter stability in humid environments. |
| Ultra-fast 50ns recovery | Reduces reverse recovery charge (Qrr ≈ 15 nC), lowering switching loss and enabling higher frequency operation than standard rectifiers. |
| 30A surge rating | Supports repeated cold-start conditions in industrial power supplies without derating or parallel devices. |
| Lead-free, halogen-free "Green" construction | Meets IPC-J-STD-609 Class 1 for bromine/chlorine/antimony limits, simplifying compliance for global OEM shipments. |
Applications
| AC/DC Adapter Output Stage | Industrial SMPS Secondary Rectification |
|---|---|
Use Scenario: 12V/24V offline adapter delivering up to 25W with <500kHz flyback topology. IC Role / Device Role / Timing Role: Output rectifier converting high-frequency transformer secondary AC to regulated DC; conducts during positive half-cycle only. Use Value: 50ns trr minimizes overlap loss with synchronous MOSFET body diode, improving efficiency by ~1.2% over US1J at 250kHz. | Use Scenario: 48V telecom power module with dual-output flyback requiring low EMI and high reliability. IC Role / Device Role / Timing Role: Primary output rectifier handling 1.0A continuous load; placed adjacent to heatsinked ground plane. Use Value: 30°C/W RθJT allows direct thermal coupling to 2-oz copper, maintaining Tj <125°C without external heatsink. |
| LED Driver Bulk Rectification | UPS Input Bridge Leg |
Use Scenario: Constant-current LED driver with universal AC input (90–265VAC) and PFC stage. IC Role / Device Role / Timing Role: Bulk rectifier in bridge configuration feeding PFC controller; sees full line voltage peaks. Use Value: 1000V VRRM provides 2× safety margin over 265VAC × √2 = 375V peak, preventing avalanche-induced wear-out. | Use Scenario: Online UPS with 120V/230V auto-sensing input rectifier stage. IC Role / Device Role / Timing Role: One leg of full-wave bridge rectifier handling 50/60Hz line frequency and transient surges. Use Value: 30A IFSM withstands generator start-up surges and lightning-induced line spikes without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R06U | 600V VRRM, 55ns trr, TO-277 package (single-diode DPAK) | Limited to ≤600V systems; higher thermal resistance (45°C/W) requires larger copper area | Preferred where board space permits larger footprint and lower voltage rating suffices |
| ES1J-E3/57T | 600V VRRM, 35ns trr, SMA package, 1.7V VFM | Faster recovery but lower voltage rating; tighter leakage spec (5µA @ 25°C) | Optimal for 400V-class PFC outputs where speed outweighs voltage margin |
Compared with STTH1R06U and ES1J-E3/57T, US1M-13-F uniquely balances 1000V blocking, 50ns speed, and SMA compatibility - making it the only option among the three qualified for universal-input offline converters requiring >800V reverse margin without package redesign.
Availability
US1M-13-F is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial AC/DC adapters, and LED driver bulk rectification requiring stable component supply, long-lifecycle availability, and consistent parametric performance across production lots.
Supply support for US1M-13-F 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 and manufacturing operations across Asia and the Americas.
The US1x series belongs to Diodes' ultra-fast rectifier product line, engineered specifically for high-efficiency, high-frequency power conversion in space-constrained consumer and industrial power supplies.
FAQ
What is the maximum operating temperature for US1M-13-F?
The US1M-13-F has an operating junction temperature range of –65°C to +150°C. At 1.0A average current, thermal design must limit junction temperature to ≤150°C using the 30°C/W RθJT value and appropriate PCB copper area - typically requiring ≥100 mm² of 2-oz copper connected to the cathode terminal.
Is US1M-13-F compatible with lead-free reflow soldering processes?
Yes. US1M-13-F features matte tin-plated terminals and complies with J-STD-020 Level 1 moisture sensitivity. It supports standard Pb-free reflow profiles (peak 260°C, 10–15 sec above 217°C) without delamination or parametric shift, verified per MIL-STD-202 Method 208.
How does the 50ns reverse recovery time impact EMI performance?
A 50ns trr reduces reverse recovery charge (Qrr) to ~15 nC, limiting high-frequency ringing and dv/dt-induced noise during turn-off. This lowers common-mode EMI in Class B conducted emissions tests, especially when paired with snubberless layouts in flyback converters operating above 200kHz.
Can US1M-13-F replace US1J-13-F in existing designs?
Yes - US1M-13-F is a direct voltage-upgrade replacement for US1J-13-F (600V), sharing identical SMA package, pinout, thermal characteristics, and forward voltage. No layout or thermal changes are needed, but system-level validation of reverse voltage margin and leakage at elevated temperature is recommended.
US1M-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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-F FAQ
1.How can I place an order for US1M-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for US1M-13-F 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-F reliable?
The price and inventory of US1M-13-F 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-F is usually 5 days.
3.What payment methods are accepted for US1M-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for US1M-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for US1M-13-F?
US1M-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your US1M-13-F 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-F?
For technical support, including US1M-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your US1M-13-F requirements.
6.How does Aetrix verify that US1M-13-F is sourced from the original manufacturer or authorized distributors?
All US1M-13-F 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-F meets industry standards.
7.What is the process for return or replacement of US1M-13-F?
All US1M-13-F units undergo pre-shipment inspection (PSI). If there is an issue with US1M-13-F, 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-F part is unused and in its original packaging.
Return procedure for US1M-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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