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Diodes Incorporated US1JDFQ-13
- Part No.:
- US1JDFQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- 2-SMD, Flat Leads
- Datasheet:
-
US1JDFQ-13.pdf
- Description:
- DIODE GEN PURP 600V 1A DFLAT
- Quantity:
- Payment:
- Shipping:
Inventory:9,976
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Product details
Overview
US1JDFQ-13 from Diodes Incorporated is an AEC-Q101-qualified ultra-fast surface-mount rectifier in D-FLAT package, rated for 600 V peak repetitive reverse voltage, 1.0 A average forward current, and 75 ns reverse recovery time. It delivers low-profile reverse polarity protection and high-efficiency switching in automotive power supplies and DC-DC converters.
For engineers reviewing the US1JDFQ-13 datasheet, US1JDFQ-13 pinout, US1JDFQ-13 application, or US1JDFQ-13 equivalent, key selection criteria include its 1.7 V max forward voltage at 1.0 A, 5 µA max reverse leakage at 25°C, AEC-Q101 qualification, RoHS-compliant matte tin terminals, and D-FLAT thermal resistance of 44 °C/W (junction-to-terminal).
Technical Context
This device is a single-phase, silicon planar epitaxial ultra-fast recovery rectifier with glass-passivated die construction. Its 75 ns reverse recovery time (measured at IF = 0.5 A, IR = 1.0 A, IRR = 0.25 A) enables high-frequency switching in SMPS and flyback topologies while minimizing switching losses.
The D-FLAT package features a low profile (<1.1 mm height), 0.035 g mass, and UL 94V-0 molded green compound. Thermal performance is characterized by RθJT = 44 °C/W and RθJA = 80 °C/W on specified FR-4 PCB layouts, supporting reliable operation from –55°C to +150°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - Withstands transient surges up to 600 V in reverse bias without breakdown. |
| IO | 1.0 A - Sustains continuous DC output current in rectification circuits at TT = +25°C. |
| VF(MAX) | 1.7 V @ 1.0 A - Limits conduction loss to ≤1.7 W per diode in series power paths. |
| tRR | 75 ns - Enables operation up to ~2 MHz switching frequency with minimal reverse recovery loss. |
| IR(MAX) | 5 µA @ 25°C - Ensures negligible leakage current in high-impedance blocking applications. |
| IFSM | 30 A @ 8.3 ms - Survives inrush and fault currents in automotive load-dump scenarios. |
| CT | 10 pF @ 1 MHz, 4 V - Minimizes capacitive coupling noise in high-speed signal isolation paths. |
Pinout & Package
Package: D-FLAT - Surface-mount, low-profile (height <1.1 mm), cathode-banded, 2-terminal plastic package with matte tin–annealed copper leadframe. Dimensions: 4.65 mm × 2.80 mm × ≤1.10 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to input/source side in rectifier configuration; requires adequate copper pour for thermal dissipation. |
| Cathode (banded end) | Forward current exit / reverse blocking node | Connected to output/load side; cathode band identifies polarity for automated placement and manual inspection. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die | Enhances long-term reliability under humidity and thermal cycling; eliminates need for conformal coating in automotive under-hood environments. |
| AEC-Q101 qualification | Validated for automotive-grade stress testing including HTOL, TC, UHAST, and ESD, enabling use in engine control and ADAS power stages. |
| Surge rating: 30 A (8.3 ms) | Withstands ISO 7637-2 pulse 5a load-dump transients without failure in 12 V vehicle systems. |
| Lead-free & halogen-free | Complies with RoHS 2 and JEDEC J-STD-020 Level 1 moisture sensitivity; supports lead-free reflow and green manufacturing requirements. |
| D-FLAT thermal resistance | RθJT = 44 °C/W enables >0.8 W power dissipation on standard FR-4 with minimal heatsinking. |
Applications
| Automotive Power Supply | Industrial DC-DC Converter |
|---|---|
Use Scenario: Reverse battery connection protection in 12 V automotive ECUs. IC Role / Device Role / Timing Role: Unidirectional current gate placed between battery input and system rail. Use Value: Prevents damage during jump-start misconnection; 600 V VRRM accommodates load-dump spikes up to 40 V. | Use Scenario: Output rectification in isolated flyback converter for industrial PLC I/O modules. IC Role / Device Role / Timing Role: High-frequency secondary-side rectifier synchronized with transformer reset. Use Value: 75 ns tRR reduces switching loss vs. standard fast recovery diodes, improving efficiency by ~1.2% at 250 kHz. |
| LED Driver Input Stage | AC-DC Adapter Secondary Rectification |
Use Scenario: Input polarity protection for constant-current LED drivers in streetlight fixtures. IC Role / Device Role / Timing Role: Series-blocking element before bridge rectifier and PFC stage. Use Value: 1.0 A IO supports 350–700 mA driver loads; low VF minimizes standby power loss. | Use Scenario: Secondary-side rectification in compact 5–12 W wall adapters. IC Role / Device Role / Timing Role: Low-loss output rectifier replacing Schottky diodes where higher VRRM is required. Use Value: 10 pF CT reduces EMI generation compared to higher-capacitance alternatives, easing EMC compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| US1KDFQ-13 | VRRM = 800 V; tRR = 75 ns; VF = 1.7 V @ 1 A | Higher voltage margin for 24 V/48 V systems; same thermal and footprint compatibility | Select when design requires ≥800 V blocking with identical layout and thermal behavior. |
| ES1J-13-F | VRRM = 600 V; tRR = 35 ns; VF = 1.7 V @ 1 A; SMA package | Lower tRR but larger SMA footprint and higher RθJA (100 °C/W); not AEC-Q101 qualified | Choose only for non-automotive, space-constrained designs needing faster recovery, accepting reduced reliability validation. |
Compared with US1KDFQ-13, US1JDFQ-13 offers tighter voltage margin but identical thermal and mechanical fit; versus ES1J-13-F, it trades 40 ns faster recovery for AEC-Q101 compliance, lower profile, and superior thermal resistance-critical for automotive and high-reliability industrial use.
Availability
US1JDFQ-13 is available at Aetrix Electronics and suitable for automotive power supply design, industrial DC-DC converter development, and LED driver input protection requiring stable component supply across production lifecycles.
Supply support for US1JDFQ-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 components for automotive, industrial, and computing markets.
The US1JDFQ-13 belongs to Diodes' AEC-Q101-qualified ultra-fast rectifier product line, engineered specifically for robust reverse protection and high-frequency switching in harsh-environment power conversion systems.
FAQ
What is the maximum operating temperature for US1JDFQ-13?
The US1JDFQ-13 is rated for junction and storage temperatures from –55°C to +150°C. Its thermal resistance (RθJT = 44 °C/W) allows sustained operation at full 1.0 A current up to +125°C ambient when mounted on a 1" × 1", 2 oz copper pad per Diodes' recommended layout.
Is US1JDFQ-13 compatible with lead-free reflow processes?
Yes. US1JDFQ-13 features matte tin–annealed copper terminals and is qualified to JEDEC J-STD-020 Level 1 moisture sensitivity. It supports standard Pb-free reflow profiles with peak temperatures up to 260°C and is RoHS 2 compliant per EU Directive 2011/65/EU.
How does the D-FLAT package improve thermal performance over SMA?
The D-FLAT package provides direct thermal path from die to PCB via exposed copper terminals, achieving RθJT = 44 °C/W-35% lower than typical SMA packages (~68 °C/W). Its flat geometry also enables better solder joint reliability under thermal cycling, critical for automotive under-hood applications.
Can US1JDFQ-13 replace a Schottky diode in 12 V systems?
It can replace Schottky diodes where VRRM > 45 V is needed and reverse leakage must be minimized. Unlike Schottkys, US1JDFQ-13 has only 5 µA IR at 25°C (vs. >100 µA for many Schottkys), but its 1.7 V VF yields higher conduction loss-so it's preferred for blocking over rectification in medium-voltage, low-leakage applications.
US1JDFQ-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):
- 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D-Flat
- Operating Temperature - Junction:
- -55°C ~ 150°C
US1JDFQ-13 FAQ
1.How can I place an order for US1JDFQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for US1JDFQ-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 US1JDFQ-13 reliable?
The price and inventory of US1JDFQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for US1JDFQ-13 is usually 5 days.
3.What payment methods are accepted for US1JDFQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for US1JDFQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for US1JDFQ-13?
US1JDFQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your US1JDFQ-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 US1JDFQ-13?
For technical support, including US1JDFQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your US1JDFQ-13 requirements.
6.How does Aetrix verify that US1JDFQ-13 is sourced from the original manufacturer or authorized distributors?
All US1JDFQ-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 US1JDFQ-13 meets industry standards.
7.What is the process for return or replacement of US1JDFQ-13?
All US1JDFQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with US1JDFQ-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 US1JDFQ-13 part is unused and in its original packaging.
Return procedure for US1JDFQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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