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Diodes Incorporated S1MDFQ-13
- Part No.:
- S1MDFQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- 2-SMD, Flat Leads
- Datasheet:
-
S1MDFQ-13.pdf
- Description:
- DIODE GEN PURP 1KV 1A DFLAT
- Quantity:
- Payment:
- Shipping:
Inventory:9,457
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Product details
Overview
S1MDFQ-13 from Diodes Incorporated is a 1.0A, 1000V glass passivated surface-mount rectifier in the D-FLAT package, featuring 1.1V max forward voltage at 1A and 5μA max reverse leakage at 1000V/25°C. It delivers high surge robustness (30A peak) and AEC-Q101 qualification for automotive reverse polarity protection and DC blocking circuits.
For engineers reviewing the S1MDFQ-13 datasheet, S1MDFQ-13 pinout, S1MDFQ-13 application, or S1MDFQ-13 equivalent, key selection criteria include its 1000V VRRM, low-profile <1.1mm height, RoHS-compliant matte tin terminals, and thermal resistance of 34°C/W (junction-to-terminal), critical for space-constrained automotive power rails.
Technical Context
The S1MDFQ-13 operates as a unidirectional silicon PN junction rectifier optimized for standard AC-to-DC conversion and DC-side polarity safeguarding. Its glass passivation ensures stable reverse characteristics across -55°C to +150°C ambient, with 700V RMS reverse rating and 1000V DC blocking capability under resistive/inductive loads.
Thermal design relies on its D-FLAT package's low RθJT (34°C/W) and FR-4 board mounting per JEDEC standards. Derating curves specify 1.0A average current at +100°C ambient, dropping to zero at +150°C, while capacitive loads require 20% current reduction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - Withstands repetitive reverse voltages up to 1000V without breakdown, enabling use in 800V DC bus protection. |
| IO | 1.0 A @ TA = +100°C - Continuous DC output current rating at elevated ambient, suitable for compact power supply outputs. |
| VF (max) | 1.1 V @ IF = 1A, TJ = +25°C - Limits conduction loss to ≤1.1W at full load, reducing thermal stress in sealed enclosures. |
| IR (max) | 5 μA @ VR = 1000V, TJ = +25°C - Ensures minimal leakage-induced standby power drain in battery-backed systems. |
| IFSM | 30 A @ 8.3ms half-sine - Survives inrush surges from capacitor charging or motor startup without degradation. |
| RθJT | 34 °C/W - Enables direct thermal coupling to PCB copper pads for passive cooling without heatsinks in automotive modules. |
| TJ Range | -55°C to +150°C - Meets extended temperature requirements for under-hood automotive electronics. |
Pinout & Package
Package: D-FLAT - Low-profile surface-mount package (max height 1.1 mm), molded green compound (UL 94V-0), with cathode band marking and matte tin–annealed copper leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry | Connected to input/source side of rectification path; requires adequate copper area for 1A continuous conduction. |
| Cathode (marked by band) | Forward current exit / reverse voltage reference | Connected to load/ground side; cathode band orientation must align with PCB silkscreen for automated assembly verification. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die | Prevents moisture ingress and surface contamination, ensuring long-term reliability in humid under-hood environments. |
| AEC-Q101 qualification | Validated for automotive-grade stress testing (HTOL, TC, UHAST), supporting PPAP submission for Tier-1 suppliers. |
| D-FLAT mechanical profile | Height <1.1 mm enables placement beneath connectors or in stacked PCB assemblies with tight Z-axis constraints. |
| Halogen- and antimony-free "Green" construction | Meets automotive OEM environmental mandates (<900 ppm Br/Cl, <1000 ppm Sb), simplifying end-of-life compliance reporting. |
Applications
| Automotive Reverse Polarity Protection | Industrial DC Power Input Blocking |
|---|---|
Use Scenario: Protects vehicle infotainment ECUs from battery misconnection during service or jump-start events. IC Role / Device Role / Timing Role: Standalone discrete rectifier used as series-blocking diode on 12V/24V supply rail. Use Value: Withstands 30A surge without failure and maintains <5μA leakage at 1000V, preventing parasitic drain in parked vehicles. | Use Scenario: Isolates backup battery from main DC bus in programmable logic controllers during mains failure. IC Role / Device Role / Timing Role: Unidirectional blocking element in OR-ing configuration with secondary power source. Use Value: 1000V VRRM provides margin against transients on industrial 48V/60V distribution lines. |
| Consumer AC-DC Adapter Output Rectification | LED Driver Input Stage Protection |
Use Scenario: Secondary-side rectification in compact wall-wart adapters powering IoT sensors. IC Role / Device Role / Timing Role: Standard half-wave rectifier converting transformer output to DC before filtering. Use Value: Low 1.1V VF minimizes voltage drop and improves efficiency in space-limited plastic housings. | Use Scenario: Prevents reverse current flow from LED string into driver IC during fault conditions. IC Role / Device Role / Timing Role: Reverse-biased protection diode placed between driver output and LED anode. Use Value: Glass passivation ensures stable IR performance over 10-year lifetime in high-temperature LED fixtures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB1100-TB-E3/5AT (Vishay) | Same 1000V VRRM, but 1.05V VF max at 1A and 10μA IR at 1000V/25°C. | Higher leakage may increase standby power in battery-critical designs. | Preferred where cost sensitivity outweighs ultra-low leakage requirements. |
| ES1J (ON Semiconductor) | 1000V VRRM, 1.7A IO, but TO-220AC package (height >9 mm) and no AEC-Q101 qualification. | Not suitable for SMT automotive modules due to through-hole form factor and lack of automotive qualification. | Select only for non-automotive, higher-current, non-space-constrained applications. |
Compared with SB1100-TB-E3/5AT and ES1J, the S1MDFQ-13 uniquely combines AEC-Q101 qualification, D-FLAT low-profile packaging, and 5μA leakage-making it the sole choice for automotive SMT rectification where height, reliability, and leakage are jointly constrained.
Availability
S1MDFQ-13 is available at Aetrix Electronics and suitable for automotive reverse protection, industrial DC input blocking, and consumer AC-DC adapter rectification requiring stable component supply across production lifecycles.
Supply support for S1MDFQ-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 and signal integrity solutions for automotive, industrial, and consumer markets.
The S1MDFQ-13 belongs to Diodes' AEC-Q101-qualified rectifier product line, engineered specifically for space-constrained automotive power rails where low profile, surge robustness, and environmental compliance are mandatory.
FAQ
What is the maximum operating temperature for the S1MDFQ-13?
The S1MDFQ-13 has a specified junction and storage temperature range of -55°C to +150°C. Its derating curve shows full 1.0A average current is rated at +100°C ambient; operation above this requires linear current reduction to maintain junction temperature within limits, supported by its 34°C/W junction-to-terminal thermal resistance.
Is the S1MDFQ-13 suitable for capacitive-load applications?
Yes, but with a mandatory 20% current derating per the datasheet. When driving large input capacitors (e.g., in switch-mode power supplies), the average forward current must be limited to 0.8A to prevent overheating due to increased RMS current and reduced thermal time constant during charging cycles.
Does the S1MDFQ-13 have a defined polarity marking?
Yes-the cathode is marked by a visible band on the top surface of the D-FLAT package. This band aligns with the cathode terminal (pin 2) in the standardized D-FLAT outline and must match the PCB silkscreen polarity indicator to ensure correct orientation during automated placement and functional operation.
What does "PPAP Capable" mean for the S1MDFQ-13?
"PPAP Capable" indicates Diodes Incorporated supports Production Part Approval Process documentation-including part submissions, test reports, and process flow analysis-for the S1MDFQ-13. This enables Tier-1 automotive suppliers to fulfill OEM quality system requirements without additional qualification effort beyond standard AEC-Q101 validation.
S1MDFQ-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:
- 1.1 V @ 1 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1000 V
- Capacitance @ Vr, F:
- 6pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D-Flat
- Operating Temperature - Junction:
- -55°C ~ 150°C
S1MDFQ-13 FAQ
1.How can I place an order for S1MDFQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for S1MDFQ-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 S1MDFQ-13 reliable?
The price and inventory of S1MDFQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S1MDFQ-13 is usually 5 days.
3.What payment methods are accepted for S1MDFQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S1MDFQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S1MDFQ-13?
S1MDFQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S1MDFQ-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 S1MDFQ-13?
For technical support, including S1MDFQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S1MDFQ-13 requirements.
6.How does Aetrix verify that S1MDFQ-13 is sourced from the original manufacturer or authorized distributors?
All S1MDFQ-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 S1MDFQ-13 meets industry standards.
7.What is the process for return or replacement of S1MDFQ-13?
All S1MDFQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with S1MDFQ-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 S1MDFQ-13 part is unused and in its original packaging.
Return procedure for S1MDFQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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