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Diodes Incorporated S1MSWFQ-7
- Part No.:
- S1MSWFQ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- SOD-123F
- Datasheet:
-
S1MSWFQ-7.pdf
- Description:
- DIODE GEN PURP 1KV 1A SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:7,862
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Product details
Overview
S1MSWFQ from Diodes Incorporated is a 1.0A, 1000V glass passivated surface-mount rectifier in SOD123F (Type B) package, featuring VF ≤ 1.1V at 1A/25°C, IR ≤ 10µA at 1000V/25°C, tRR = 1.0µs, and AEC-Q101 qualification for automotive reverse polarity protection circuits.
For engineers reviewing the S1MSWFQ datasheet, S1MSWFQ pinout, S1MSWFQ application, or S1MSWFQ equivalent, this device serves as a high-reliability, low-profile rectifier for DC blocking and reverse voltage protection in space-constrained automotive and industrial power supplies where thermal resistance (RθJA = 78°C/W) and surge robustness (IFSM = 25A) are critical selection criteria.
Technical Context
This rectifier employs glass passivated die construction to ensure stable reverse breakdown performance up to 1000V and low leakage across -55°C to +150°C operating range. Its fast recovery time (tRR = 1.0µs) supports switching-mode power supply input stages and transient suppression circuits requiring minimal reverse recovery loss.
The SOD123F (Type B) package delivers low profile (max height 1.15mm), lead-free matte tin terminals solderable per MIL-STD-202, and moisture sensitivity level 1 compliance - enabling reliable reflow assembly without preconditioning in automotive-grade production lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - Withstands repetitive reverse voltage up to 1000V without breakdown, suitable for 700V RMS AC line inputs. |
| IO @ TA=75°C | 1.0 A - Continuous average forward current rating at 75°C ambient, derated linearly to zero at 150°C per Figure 1. |
| VF Max | 1.1 V @ 1A, 25°C - Forward voltage drop limiting conduction loss to ≤1.1W at full load, critical for thermal management in sealed enclosures. |
| IR Max | 10 µA @ 1000V, 25°C - Ultra-low leakage preserves battery backup integrity and prevents false triggering in high-impedance sensing paths. |
| tRR | 1.0 µs - Fast reverse recovery minimizes switching loss and EMI generation in 100kHz–500kHz SMPS front-end rectification. |
| RθJA | 78 °C/W - Junction-to-ambient thermal resistance on standard FR4 board with recommended pad layout, defining heatsinking requirements. |
| AEC-Q101 | Qualified - Validated for automotive applications including engine control units and body electronics under stress test conditions per AEC standard. |
Pinout & Package
Package: SOD123F (Type B), surface-mount, cathode-banded, molded green plastic (UL 94V-0), weight 0.016g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry | Connected to input source (e.g., battery positive or AC line phase); must withstand IFSM = 25A surge. |
| Cathode (banded end) | Forward current exit / reverse blocking node | Connected to load ground or output rail; reverse voltage applied here during blocking mode. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die | Eliminates silicon surface contamination and enhances long-term reliability under humidity and thermal cycling stress. |
| SOD123F (Type B) footprint | Enables PCB area reduction vs. SMA/SMB packages while maintaining compatibility with standard pick-and-place equipment. |
| AEC-Q101 qualification | Confirms suitability for automotive applications requiring PPAP documentation and IATF16949-manufactured traceability. |
| Halogen & antimony free | Meets "Green" definition (<900ppm Br, <900ppm Cl, <1000ppm Sb), supporting environmental compliance in EU and global markets. |
Applications
| Automotive Reverse Polarity Protection | Industrial DC Power Input Stage |
|---|---|
Use Scenario: Protects ECUs, infotainment modules, and ADAS sensors from damage due to incorrect battery terminal connection. IC Role / Device Role / Timing Role: Standalone discrete rectifier used as series-blocking element in 12V/24V supply path. Use Value: Prevents >1000V reverse transients from reaching downstream ICs while sustaining 1A continuous load with <1.1V drop. | Use Scenario: Rectifies AC input in DIN-rail mounted PLC power supplies operating in factory environments. IC Role / Device Role / Timing Role: Primary input rectifier in bridgeless or half-wave configurations for 50/60Hz line-derived DC rails. Use Value: Delivers stable 1A output with <10µA leakage at full rated voltage, reducing standby power loss in always-on systems. |
| USB-C PD Adapter Secondary Side | Smart Meter Power Supply |
Use Scenario: Output rectification in compact, high-efficiency USB-C PD adapters with tight thermal constraints. IC Role / Device Role / Timing Role: Low-profile secondary-side rectifier replacing Schottky diodes where higher VRRM is required. Use Value: Enables 1000V isolation margin and 1.0µs recovery for synchronous rectifier timing alignment in quasi-resonant topologies. | Use Scenario: Mains-powered utility smart meters requiring long-life, high-reliability AC/DC conversion. IC Role / Device Role / Timing Role: Input-stage rectifier in transformer-coupled offline SMPS with extended temperature operation. Use Value: Maintains <0.2µA leakage at 125°C, ensuring meter accuracy over 15-year field life without capacitor degradation from leakage current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB1100-TB | Same SOD123F package, but 100V VRRM and 1A IO; VF = 0.85V @ 1A - lower forward loss but insufficient for 1000V systems. | Only suitable for low-voltage DC-DC input protection (≤100V), not line rectification or automotive battery reverse protection. | Select only when system reverse voltage <100V and lowest possible VF is prioritized over surge capability. |
| ES1J-M3/84A | DO-214AC (SMA) package, 600V VRRM, 1A IO, tRR = 35ns - faster recovery but lower voltage rating and larger footprint. | Preferred in high-frequency flyback snubbers where sub-50ns tRR matters, but incompatible with SOD123F board layouts and 1000V requirements. | Choose when layout allows SMA and design operates below 600V reverse stress with priority on ultrafast recovery. |
Compared with SB1100-TB and ES1J-M3/84A, the S1MSWFQ uniquely combines 1000V rating, SOD123F form factor, and AEC-Q101 qualification - making it the sole option for space-limited automotive reverse protection demanding full line-voltage blocking.
Availability
S1MSWFQ is available at Aetrix Electronics and suitable for automotive reverse polarity protection, industrial DIN-rail power supplies, USB-C PD adapter secondary rectification, and smart meter AC/DC conversion requiring stable component supply and long-term lifecycle support.
Supply support for S1MSWFQ 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 North America.
The S1MSWFQ belongs to Diodes' high-voltage rectifier product line, engineered specifically for automotive-grade reliability and compact power conversion in harsh-environment applications requiring AEC-Q101 validation and green material compliance.
FAQ
What is the maximum junction temperature for S1MSWFQ?
The S1MSWFQ has an operating junction temperature range of -55°C to +150°C, verified per AEC-Q101 stress testing. At 150°C, its leakage current rises to 100µA (per datasheet Table "Electrical Characteristics"), and forward voltage drops to 0.88V - both within specification limits for sustained operation.
Is S1MSWFQ compatible with lead-free reflow soldering processes?
Yes. The S1MSWFQ features matte tin-finished copper leadframe terminals qualified for lead-free reflow per JEDEC J-STD-020, with peak temperature tolerance up to 260°C for 10 seconds. Its SOD123F package meets moisture sensitivity level 1, eliminating bake requirements prior to assembly.
Does S1MSWFQ require a heatsink in typical 1A applications?
No external heatsink is required for 1A DC operation at ambient temperatures ≤75°C, as confirmed by the derating curve (Figure 1). With RθJA = 78°C/W on standard FR4, junction temperature rise is ~78°C above ambient at full load - staying within the 150°C limit when TA ≤ 72°C.
How does the SOD123F (Type B) package differ from standard SOD123?
SOD123F (Type B) has tighter dimensional tolerances (e.g., D = 1.70–1.90mm vs. 1.80–2.20mm for SOD123), optimized pad layout (G = 1.90mm), and enhanced thermal performance via improved mold compound adhesion. It is mechanically and electrically interchangeable with SOD123 but offers superior reflow yield and thermal stability in automotive production.
S1MSWFQ-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123F
- 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):
- 1 µs
- Current - Reverse Leakage @ Vr:
- 10 µA @ 1000 V
- Capacitance @ Vr, F:
- 6pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123F
- Operating Temperature - Junction:
- -55°C ~ 150°C
S1MSWFQ-7 FAQ
1.How can I place an order for S1MSWFQ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for S1MSWFQ-7 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 S1MSWFQ-7 reliable?
The price and inventory of S1MSWFQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S1MSWFQ-7 is usually 5 days.
3.What payment methods are accepted for S1MSWFQ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S1MSWFQ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S1MSWFQ-7?
S1MSWFQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S1MSWFQ-7 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 S1MSWFQ-7?
For technical support, including S1MSWFQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S1MSWFQ-7 requirements.
6.How does Aetrix verify that S1MSWFQ-7 is sourced from the original manufacturer or authorized distributors?
All S1MSWFQ-7 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 S1MSWFQ-7 meets industry standards.
7.What is the process for return or replacement of S1MSWFQ-7?
All S1MSWFQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with S1MSWFQ-7, 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 S1MSWFQ-7 part is unused and in its original packaging.
Return procedure for S1MSWFQ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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