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Diodes Incorporated S2KDFQ-13
- Part No.:
- S2KDFQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- 2-SMD, Flat Leads
- Datasheet:
-
S2KDFQ-13.pdf
- Description:
- DIODE GEN PURP 800V 2A DFLAT
- Quantity:
- Payment:
- Shipping:
Inventory:3,828
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Product details
Overview
S2KDFQ-13 from Diodes Incorporated is a 2.0A, 800V glass passivated surface-mount rectifier in the low-profile D-FLAT package, optimized for reverse polarity protection and DC blocking in automotive power supplies, industrial SMPS inputs, and AC/DC adapter front-ends.
For engineers reviewing the S2KDFQ-13 datasheet, S2KDFQ-13 pinout, S2KDFQ-13 application, or S2KDFQ-13 equivalent, key selection criteria include peak repetitive reverse voltage (800 V), average forward current (2.0 A), forward voltage at 2A/25°C (1.1 V max), surge rating (55 A @ 8.3 ms), and AEC-Q101 qualification for automotive use.
Technical Context
This device operates as a single-phase, half-wave silicon rectifier with glass-passivated junction for enhanced reliability under thermal cycling and humidity stress. Its 800 V VRRM supports universal AC input (90–264 VAC) rectification while maintaining <5 µA reverse leakage at rated voltage and 25°C.
The D-FLAT package delivers 23 °C/W junction-to-terminal thermal resistance and enables PCB space savings with height <1.1 mm. It is qualified to AEC-Q101, features matte tin annealed terminals, and meets RoHS, halogen-free, and antimony-free "Green" requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - Withstands peak reverse voltage in universal-input AC/DC front-ends without breakdown |
| IO | 2.0 A - Continuous DC output current capability at +25°C ambient on standard FR-4 board |
| VF Max | 1.1 V @ 2A, +25°C - Limits conduction loss to ≤2.2 W per device in high-efficiency designs |
| IFSM | 55 A @ 8.3 ms - Survives cold-start inrush surges in industrial power supplies |
| IR Max | 5 µA @ 800 V, +25°C - Ensures minimal standby power loss in always-on systems |
| RθJT | 23 °C/W - Enables direct thermal coupling to copper pour for passive cooling |
| AEC-Q101 | Qualified - Meets automotive-grade reliability for under-hood and infotainment power rails |
Pinout & Package
Package: D-FLAT - Molded plastic case, 4.65 mm × 2.80 mm footprint, height <1.1 mm, cathode band marked on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input terminal for positive half-cycle conduction | Connected to AC source or unregulated DC input; requires adequate copper area for thermal dissipation |
| Cathode | Output terminal for rectified DC current | Marked by band; ties to bulk capacitor or downstream regulator; carries full load current |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die | Eliminates wire bond corrosion risk and improves long-term stability in humid environments |
| 55 A non-repetitive surge rating | Supports repeated cold-start events without degradation in 230 VAC input applications |
| D-FLAT low-profile package | Reduces board stack height in slim consumer adapters and automotive ECUs |
| AEC-Q101 qualification | Validated for 1000-hour HTOL, temperature cycling, and mechanical shock per automotive standards |
Applications
| Reverse Polarity Protection | AC/DC Front-End Rectification |
|---|---|
Use Scenario: 12 V automotive battery input to infotainment module with risk of accidental reverse connection. IC Role / Device Role / Timing Role: Unidirectional current gate preventing damage to downstream DC/DC converters and microcontrollers. Use Value: Blocks reverse current up to –800 V while sustaining 2 A continuous forward current with <1.1 V drop. | Use Scenario: Universal-input (90–264 VAC) offline SMPS in industrial PLC power supply. IC Role / Device Role / Timing Role: Half-wave rectifier converting AC line to pulsating DC before bulk capacitor filtering. Use Value: Handles 55 A surge during cold start and maintains <5 µA leakage at full 800 V blocking. |
| DC Blocking in Signal Paths | Capacitor-Input Filter Stage |
Use Scenario: Isolating bias voltage from sensitive analog sensor interface in automotive cabin controller. IC Role / Device Role / Timing Role: High-impedance DC block preventing ground loop currents while passing AC-coupled signals. Use Value: 8 pF junction capacitance minimizes signal attenuation above 1 MHz; 800 V rating ensures margin against transients. | Use Scenario: Bulk rectification stage feeding 470 µF electrolytic capacitor in wall-mounted IoT gateway power supply. IC Role / Device Role / Timing Role: Primary rectifier delivering filtered DC to primary-side controller IC. Use Value: Low RθJT (23 °C/W) allows direct mounting to copper pour, limiting junction rise to <46°C at 2 A. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB280-E3/54 (Vishay) | Same 800 V VRRM, but 2.0 A IO at +100°C (derated vs. S2KDFQ's +25°C rating); VF = 1.15 V max @ 2A | Not AEC-Q101 qualified; intended for commercial-grade power supplies | Select when automotive qualification is not required and higher operating temperature derating is acceptable |
| ES2D (ON Semiconductor) | Lower VRRM (200 V), same IO (2 A), VF = 0.95 V max @ 2A; SMA package (higher profile) | Unsuitable for universal AC input; used in low-voltage DC/DC secondary-side rectification | Select only for 24 V or lower DC systems where compactness and low VF outweigh voltage headroom needs |
Compared with SB280-E3/54 and ES2D, the S2KDFQ-13 uniquely combines AEC-Q101 qualification, 800 V blocking, and D-FLAT ultra-low profile-making it the sole choice for space-constrained, automotive-grade rectification where surge robustness and thermal performance are critical.
Availability
S2KDFQ-13 is available at Aetrix Electronics and suitable for automotive body control modules, industrial AC/DC power supplies, and consumer adapter designs requiring stable component supply, AEC-Q101 compliance, and low-profile packaging.
Supply support for S2KDFQ-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 S2KDFQ belongs to Diodes' automotive-qualified rectifier product line, engineered specifically for robust front-end power conversion in harsh environments including engine compartments and industrial enclosures.
FAQ
What is the maximum allowable junction temperature for continuous operation?
The S2KDFQ-13 has an operating junction temperature range of –55°C to +150°C. For continuous DC operation at 2.0 A, thermal design must ensure junction temperature remains ≤150°C using the specified RθJT = 23 °C/W and appropriate PCB copper area. Derating curves in Figure 1 confirm 1.0 A maximum at +100°C ambient.
Is the D-FLAT package compatible with standard reflow soldering profiles?
Yes-the S2KDFQ-13 is qualified for lead-free reflow per JEDEC J-STD-020, with Moisture Sensitivity Level 1. Its matte tin annealed terminals meet MIL-STD-202 Method 208 solderability requirements, supporting peak temperatures up to 260°C for ≤10 seconds in standard Pb-free profiles.
Does the 55 A surge rating apply to repetitive or single-event conditions?
The 55 A non-repetitive peak forward surge current is defined for a single 8.3 ms half-sine wave at 60 Hz, superimposed on rated load. It is not rated for repetitive surges; Figure 3 shows allowable cycles decrease rapidly beyond one event, and thermal recovery time must exceed 60 seconds between surges.
How is polarity identified on the D-FLAT package?
Polarity is marked by a visible cathode band on the top surface of the D-FLAT package. The band aligns with the cathode terminal, which is the larger pad side in the suggested pad layout (per Diodes' package outline document DS38754). Anode is the opposite end, unmarked.
S2KDFQ-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):
- 800 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 2 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 5 µA @ 800 V
- Capacitance @ Vr, F:
- 8pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D-Flat
- Operating Temperature - Junction:
- -55°C ~ 150°C
S2KDFQ-13 FAQ
1.How can I place an order for S2KDFQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for S2KDFQ-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 S2KDFQ-13 reliable?
The price and inventory of S2KDFQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S2KDFQ-13 is usually 5 days.
3.What payment methods are accepted for S2KDFQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S2KDFQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S2KDFQ-13?
S2KDFQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S2KDFQ-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 S2KDFQ-13?
For technical support, including S2KDFQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S2KDFQ-13 requirements.
6.How does Aetrix verify that S2KDFQ-13 is sourced from the original manufacturer or authorized distributors?
All S2KDFQ-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 S2KDFQ-13 meets industry standards.
7.What is the process for return or replacement of S2KDFQ-13?
All S2KDFQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with S2KDFQ-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 S2KDFQ-13 part is unused and in its original packaging.
Return procedure for S2KDFQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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