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Diodes Incorporated US3M-13
- Part No.:
- US3M-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
US3M-13.pdf
- Description:
- DIODE GEN PURP 1KV 3A SMC
- Quantity:
- Payment:
- Shipping:
Inventory:27,407
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Product details
Overview
US3M-13 from Diodes Incorporated is a 3.0A, 1000V glass-passivated ultra-fast recovery surface-mount rectifier in SMC package, with VF = 1.5–1.8 V at 3.0 A, trr = 70–85 ns, and TJ(max) = +175°C. It serves as a primary AC/DC input rectifier in high-efficiency offline power supplies and electronic ballasts.
For engineers reviewing the US3M-13 datasheet, US3M-13 pinout, US3M-13 application, or US3M-13 equivalent, key selection criteria include reverse voltage rating (1000 V), ultra-fast recovery time (≤85 ns), thermal resistance (26 °C/W), and RoHS-compliant lead-free plating on SMC terminals.
Technical Context
This device employs a glass-passivated silicon die to achieve stable reverse blocking and low leakage (<10 µA @ 1000 V, 25°C) under high-voltage stress. Its ultra-fast recovery (trr ≤85 ns) minimizes switching losses during high-frequency operation in SMPS front-end stages.
The SMC package provides robust thermal performance (RθJT = 26 °C/W) and mechanical reliability for reflow-soldered PCBs. Polarity is marked by cathode band; terminals are matte tin-plated and solderable per MIL-STD-202, Method 208.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - Withstands peak reverse voltage in bridge or single-phase rectifier configurations without breakdown |
| IO(AV) | 3.0 A @ TT = +75°C - Continuous DC output current capability under standard thermal mounting conditions |
| VF | 1.5–1.8 V @ IF = 3.0 A - Forward conduction loss directly impacts efficiency and thermal design of rectifier stage |
| trr | 70–85 ns - Enables use in 100 kHz+ switching power supplies with minimal reverse recovery loss |
| IR | ≤10 µA @ VR = 1000 V, TA = 25°C - Low leakage preserves efficiency in high-impedance hold-up or standby circuits |
| TJ(max) | +175°C - Supports high-ambient operation in enclosed or thermally constrained power supply enclosures |
| RθJT | 26 °C/W - Junction-to-terminal thermal resistance enables direct heatsinking via PCB copper pads |
Pinout & Package
US3M-13 uses the SMC (DO-214AB) surface-mount package: molded plastic case (UL 94V-0), 0.21 g weight, cathode-marked with band or notch. Terminals are matte tin-plated, lead-free, and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | AC input node (positive half-cycle conduction path) | Connected to transformer secondary or bridge AC input; carries full forward current during conduction |
| Cathode | DC output node (rectified positive rail) | Delivers unidirectional current to bulk capacitor; polarity marked by band on package body |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die construction | Ensures stable reverse characteristics and long-term reliability under thermal cycling and humidity stress |
| Ultra-fast recovery time (trr ≤85 ns) | Reduces switching loss and EMI generation in high-frequency rectification above 50 kHz |
| Maximum junction temperature +175°C | Enables operation in compact, sealed, or high-ambient environments without derating penalties |
| Lead-free, halogen- and antimony-free "Green" finish | Meets RoHS 2 and JEDEC J-STD-020D Level 1 moisture sensitivity requirements out-of-box |
Applications
| AC/DC Adapter Front-End | LED Driver Ballast |
|---|---|
Use Scenario: Rectifying 50/60 Hz or high-frequency AC from transformer secondary in universal-input wall adapters. IC Role / Device Role / Timing Role: Primary unidirectional current switch converting AC line to pulsating DC before bulk capacitance. Use Value: 1000 V VRRM supports 265 VAC input with margin; 3.0 A IO handles up to 15 W output with thermal headroom. | Use Scenario: High-efficiency rectification in electronic fluorescent lamp (EFL) or LED driver ballasts operating at 20–100 kHz. IC Role / Device Role / Timing Role: Fast-switching output rectifier in resonant or quasi-resonant topologies. Use Value: 70–85 ns trr reduces switching loss and improves power factor correction stability at high frequency. |
| Industrial SMPS Input Stage | UPS Charger Rectifier |
Use Scenario: Input rectification in 24–48 V industrial switch-mode power supplies with wide ambient range. IC Role / Device Role / Timing Role: High-reliability main rectifier handling continuous load and surge transients. Use Value: +175°C TJ(max) and 120 A IFSM support operation in unventilated enclosures and withstand 8.3 ms line surges. | Use Scenario: Battery charger input rectifier in online UPS systems requiring high reverse voltage and thermal resilience. IC Role / Device Role / Timing Role: Bidirectional-blocking element in dual-active-bridge or phase-shifted full-bridge charger front-ends. Use Value: Low IR (<10 µA @ 1000 V) prevents standby power drain; glass passivation ensures long-term leakage stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH3L06S | 600 V VRRM, 3.0 A IO, trr = 45 ns, TO-277 package | Limited to ≤265 VAC input; lower VF (~1.35 V) but reduced voltage margin | Select when lower forward loss is prioritized over 1000 V safety margin |
| ES3J | 600 V VRRM, 3.0 A IO, trr = 35 ns, SMC package, same footprint | Not suitable for 1000 V designs; faster recovery but lower blocking capability | Choose only if system peak reverse voltage remains ≤600 V and speed is critical |
Compared with STTH3L06S and ES3J, US3M-13 uniquely delivers 1000 V blocking with SMC compatibility and +175°C operation-making it the only option among the three qualified for universal-input, high-ambient, or safety-critical 1 kV rectification.
Availability
US3M-13 is available at Aetrix Electronics and suitable for AC/DC adapters, LED lighting ballasts, and industrial SMPS requiring stable component supply, long-lifecycle availability, and RoHS-compliant manufacturing.
Supply support for US3M-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 the Americas.
The US3M series belongs to Diodes' high-voltage rectifier product line, engineered specifically for high-efficiency, high-reliability AC/DC conversion in space-constrained, thermally demanding power systems.
FAQ
What is the maximum allowable junction temperature for US3M-13?
The absolute maximum junction temperature is +175°C, verified per datasheet Section "Thermal Characteristics." This rating allows uninterrupted operation in sealed enclosures or high-ambient environments up to +125°C when mounted on recommended 0.56" × 0.73" copper pads per AP02001 layout guidelines.
Is US3M-13 compatible with lead-free reflow soldering processes?
Yes. US3M-13 features matte tin-plated terminals compliant with IPC/JEDEC J-STD-020D Level 1 moisture sensitivity and qualified for standard Pb-free reflow profiles (peak 260°C). No pre-baking is required prior to assembly.
How does the glass passivation improve reliability compared to epoxy-passivated rectifiers?
Glass passivation forms a hermetic, chemically inert barrier over the silicon die, preventing moisture ingress and ion migration under thermal cycling and high-humidity conditions. This results in <10 µA leakage stability over 10-year field life-unlike epoxy variants prone to parameter drift after 2–3 years in humid environments.
Can US3M-13 replace older US3M devices in existing designs?
Yes. US3M-13 is a direct replacement for legacy US3M variants (e.g., US3M-TP, US3M-G) with identical electrical specs, SMC footprint, and marking code. The "-13" suffix denotes tape-and-reel packaging (3000 pcs/reel); no circuit or layout changes are needed.
US3M-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-214AB, SMC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 1000 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 1.8 V @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 85 ns
- Current - Reverse Leakage @ Vr:
- 10 µA @ 1000 V
- Capacitance @ Vr, F:
- 25pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMC
- Operating Temperature - Junction:
- -65°C ~ 175°C
US3M-13 FAQ
1.How can I place an order for US3M-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for US3M-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 US3M-13 reliable?
The price and inventory of US3M-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for US3M-13 is usually 5 days.
3.What payment methods are accepted for US3M-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for US3M-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for US3M-13?
US3M-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your US3M-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 US3M-13?
For technical support, including US3M-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your US3M-13 requirements.
6.How does Aetrix verify that US3M-13 is sourced from the original manufacturer or authorized distributors?
All US3M-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 US3M-13 meets industry standards.
7.What is the process for return or replacement of US3M-13?
All US3M-13 units undergo pre-shipment inspection (PSI). If there is an issue with US3M-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 US3M-13 part is unused and in its original packaging.
Return procedure for US3M-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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