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Diodes Incorporated US1MDFQ-13
- Part No.:
- US1MDFQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- 2-SMD, Flat Leads
- Datasheet:
-
US1MDFQ-13.pdf
- Description:
- DIODE GEN PURP 1KV 1A DFLAT
- Quantity:
- Payment:
- Shipping:
Inventory:29,964
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Product details
Overview
US1MDFQ-13 from Diodes Incorporated is a 1000 V, 1.0 A ultra-fast recovery surface-mount rectifier in the D-FLAT package, featuring 75 ns reverse recovery time, 1.7 V max forward voltage at 1.0 A, and 5 µA max reverse leakage at 25°C. It serves as a high-efficiency AC/DC input stage or DC blocking diode in automotive power supplies and industrial SMPS.
For engineers reviewing the US1MDFQ-13 datasheet, US1MDFQ-13 pinout, US1MDFQ-13 application, or US1MDFQ-13 equivalent, key selection criteria include peak repetitive reverse voltage (1000 V), ultra-fast recovery (75 ns), AEC-Q101 qualification, low-profile D-FLAT footprint, and thermal resistance (44°C/W junction-to-terminal).
Technical Context
This device operates as a unidirectional silicon PN junction rectifier optimized for high-frequency switching applications. Its glass-passivated die construction ensures stable performance under thermal cycling, while the 75 ns tRR enables efficient operation in 50–500 kHz converters without excessive switching loss.
The D-FLAT package provides a low-inductance, low-thermal-resistance path with 0.035 g mass and <1.1 mm height. Rated for -55°C to +150°C operation and qualified to AEC-Q101, it supports automotive under-hood environments where surge immunity (30 A IFSM) and halogen-free "Green" compliance are mandatory.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - blocks up to 1000 V DC or peak AC reverse voltage without breakdown |
| IO | 1.0 A average - delivers continuous 1 A DC output current at TT = 25°C |
| tRR | 75 ns - enables high-frequency switching with minimal reverse recovery loss |
| VF | 1.7 V max @ 1.0 A - limits conduction loss to ≤1.7 W per diode at rated current |
| IR | 5 µA max @ 25°C - ensures low standby power loss in blocking mode |
| RθJT | 44 °C/W - allows direct thermal coupling to PCB copper for effective heat dissipation |
| CT | 10 pF @ 4 V, 1 MHz - minimizes capacitive coupling noise in high-dV/dt circuits |
Pinout & Package
Package: D-FLAT - molded plastic, halogen-free, RoHS-compliant, 0.9–1.1 mm height, cathode band marked on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry | Connected to lower-potential side of circuit; accepts 1 A DC during conduction |
| Cathode | Forward current exit / reverse blocking terminal | Marked with band; withstands 1000 V reverse bias; ties to higher-potential rail |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die | Prevents surface contamination and moisture ingress, ensuring long-term reliability in humid or thermally cycled environments |
| Ultra-fast 75 ns recovery | Reduces switching loss and EMI generation in high-frequency SMPS and PFC stages |
| 30 A non-repetitive surge rating | Withstands line transients and inrush currents without failure in automotive 12 V/24 V systems |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, HTRB, and mechanical shock per stress test requirements |
| D-FLAT low-profile package | Enables compact layout in space-constrained modules (e.g., LED drivers, infotainment power rails) |
Applications
| Automotive Body Control Module (BCM) | Industrial AC-DC Adapter |
|---|---|
Use Scenario: Reverse polarity protection on 12 V battery input rail. IC Role / Device Role / Timing Role: Unidirectional blocking diode preventing damage during jump-start or incorrect battery connection. Use Value: Withstands 30 A surge and operates reliably from -40°C to +125°C ambient per AEC-Q101. | Use Scenario: Output rectification in 65 W offline flyback converter. IC Role / Device Role / Timing Role: High-frequency secondary-side rectifier replacing slower FR107-type devices. Use Value: 75 ns tRR reduces switching loss by >30% vs. standard fast recovery diodes at 100 kHz. |
| LED Driver Power Stage | Telecom DC-DC Input Protection |
Use Scenario: DC blocking between boost converter and LED string in automotive headlamp module. IC Role / Device Role / Timing Role: Isolates LED load from upstream switching node during fault conditions. Use Value: 1000 V VRRM accommodates transient spikes up to 800 V in boost-derived topologies. | Use Scenario: Input reverse-voltage protection on 48 V telecom power supply front-end. IC Role / Device Role / Timing Role: Prevents backfeed into primary side during hot-swap or redundancy switching. Use Value: 5 µA IR at 25°C ensures negligible standby current draw in always-on systems. |
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 | Same 1000 V VRRM, but 110 ns tRR; TO-277 package (higher RθJA = 100°C/W) | Larger footprint; less suitable for ultra-thin designs requiring D-FLAT height constraint | Choose if board-level thermal management favors TO-277 mounting or legacy footprint reuse is required |
| SB1100-TB | Lower 100 V VRRM; Schottky architecture; 0.85 V VF; no reverse recovery | Not suitable for 1000 V blocking; limited to ≤85°C operation due to higher IR drift | Choose only for low-voltage, high-efficiency (<100 V) DC-DC outputs where zero tRR is critical |
Compared with STTH1R06S and SB1100-TB, US1MDFQ-13 uniquely balances 1000 V blocking, 75 ns speed, AEC-Q101 qualification, and sub-1.1 mm profile-making it optimal for space- and reliability-constrained automotive and industrial rectification where both voltage and speed matter.
Availability
US1MDFQ-13 is available at Aetrix Electronics and suitable for automotive body control modules, industrial AC-DC adapters, and LED driver power stages requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for US1MDFQ-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, specializing in high-reliability power management, signal integrity, and protection solutions.
The US1MDFQ-13 belongs to Diodes' AEC-Q101-qualified ultra-fast rectifier product line, engineered specifically for automotive and industrial power conversion where robustness, speed, and compact packaging are essential.
FAQ
What is the maximum operating temperature for US1MDFQ-13?
The US1MDFQ-13 has an operating junction temperature range of -55°C to +150°C, with storage temperature matching that range. At 150°C junction, its reverse leakage rises to 100 µA, and derating applies above 100°C ambient per Figure 1. Thermal design must respect RθJT = 44°C/W to avoid exceeding TJ limits under full load.
Is US1MDFQ-13 pin-compatible with US1JDFQ-13?
Yes-both share identical D-FLAT package dimensions, anode/cathode terminal layout, and marking orientation. The only functional difference is VRRM: US1JDFQ-13 is rated for 600 V, while US1MDFQ-13 is rated for 1000 V. No PCB redesign is needed when upgrading for higher voltage margin.
Does US1MDFQ-13 require a heatsink in typical applications?
No external heatsink is required for 1 A DC operation at ≤70°C ambient, provided the PCB uses ≥0.2" × 0.25" copper pads per the datasheet's Note 9 layout. Its RθJT = 44°C/W enables sufficient self-cooling via copper pour; however, thermal vias and larger ground planes improve performance in sealed enclosures.
Can US1MDFQ-13 be used in place of a standard FR107 diode?
Yes, but only where 1000 V blocking and ultra-fast recovery are needed. FR107 offers 1000 V VRRM but has ~500 ns tRR and lacks AEC-Q101 qualification. US1MDFQ-13 improves efficiency and EMI in high-frequency designs and meets automotive reliability standards-making it a drop-in upgrade where space and thermal constraints allow.
US1MDFQ-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 2-SMD, Flat Leads
- 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D-Flat
- Operating Temperature - Junction:
- -55°C ~ 150°C
US1MDFQ-13 FAQ
1.How can I place an order for US1MDFQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for US1MDFQ-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 US1MDFQ-13 reliable?
The price and inventory of US1MDFQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for US1MDFQ-13 is usually 5 days.
3.What payment methods are accepted for US1MDFQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for US1MDFQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for US1MDFQ-13?
US1MDFQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your US1MDFQ-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 US1MDFQ-13?
For technical support, including US1MDFQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your US1MDFQ-13 requirements.
6.How does Aetrix verify that US1MDFQ-13 is sourced from the original manufacturer or authorized distributors?
All US1MDFQ-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 US1MDFQ-13 meets industry standards.
7.What is the process for return or replacement of US1MDFQ-13?
All US1MDFQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with US1MDFQ-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 US1MDFQ-13 part is unused and in its original packaging.
Return procedure for US1MDFQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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