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Diodes Incorporated RS1MSWFMQ-7
- Part No.:
- RS1MSWFMQ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- SOD-123F
- Datasheet:
-
RS1MSWFMQ-7.pdf
- Description:
- DIODE GEN PURP 1KV 1A SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:1,047
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Product details
Overview
RS1MSWFMQ-7 from Diodes Incorporated is a 1.0A, 1000V fast recovery surface-mount rectifier in SOD123F (Type B) package, with VF ≤ 1.3V at 1A/25°C, trr ≤ 500ns, and IR ≤ 10µA at 1000V/25°C. It delivers high-efficiency reverse polarity protection and DC blocking in automotive power supplies and industrial switching converters.
For engineers reviewing the RS1MSWFMQ-7 datasheet, RS1MSWFMQ-7 pinout, RS1MSWFMQ-7 application, or RS1MSWFMQ-7 equivalent, key selection criteria include peak repetitive reverse voltage (1000V), fast recovery time (≤500ns), AEC-Q101 qualification, thermal resistance (RθJA = 82°C/W), and SOD123F footprint compatibility with automated assembly.
Technical Context
This device is a single-phase, silicon planar, glass-passivated fast recovery rectifier optimized for high-frequency switching applications. Its 148ns typical reverse recovery time and low junction capacitance (4.7pF at 4V) minimize switching losses and EMI generation during turn-off transitions.
The SOD123F (Type B) package provides a low-profile, thermally efficient structure with RθJC = 13°C/W and moisture sensitivity level 1. It supports operation from −55°C to +150°C and is rated for non-repetitive surge current up to 25A (8.3ms half-sine).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - Withstands peak reverse voltage in bridge or flyback clamp circuits without breakdown |
| IO @ TA=75°C | 1.0 A - Continuous forward current rating under real-world board-level thermal conditions |
| VF Max | 1.3 V @ 1A/25°C - Limits conduction loss and self-heating in compact power rails |
| trr Max | 500 ns - Enables operation up to ~200 kHz switching frequency with low recovery loss |
| IR Max | 10 µA @ 1000V/25°C - Ensures minimal leakage in high-impedance blocking paths |
| RθJA | 82 °C/W - Defines temperature rise on standard FR4 PCB with recommended pad layout |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling and HTRB |
Pinout & Package
SOD123F (Type B) is a two-terminal, surface-mount plastic package with cathode band marking. Dimensions: 2.70mm × 1.80mm × 1.15mm (L × W × H), weight ≈ 0.018g. Matte tin-plated copper leadframe ensures solderability per MIL-STD-202, Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to input/source side in reverse protection or rectification path |
| Cathode (marked) | Forward current exit / reverse blocking node | Connected to load or output rail; polarity band identifies terminal for correct orientation |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die | Enhances long-term stability of reverse characteristics under humidity and bias stress |
| Fast recovery (trr ≤ 500 ns) | Reduces switching loss and diode-induced ringing in SMPS and motor drive freewheeling paths |
| SOD123F footprint | Enables high-density layout and compatibility with standard pick-and-place equipment |
| AEC-Q101 qualified | Validates robustness for automotive body electronics, lighting, and infotainment power stages |
| Halogen- and antimony-free "Green" construction | Meets IEC 61249-2-21 and JEDEC J-STD-020 requirements for eco-compliant manufacturing |
Applications
| Automotive Power Supply Protection | Industrial DC-DC Converter Output Stage |
|---|---|
Use Scenario: Reverse battery connection protection in 12V/24V vehicle ECUs and ADAS modules. IC Role / Device Role / Timing Role: Unidirectional blocking element placed between battery input and downstream regulator ICs. Use Value: Prevents damage from −12V/−24V transients while maintaining <1.3V forward drop at full load current. | Use Scenario: Output rectification in isolated flyback or forward converters powering PLC I/O modules. IC Role / Device Role / Timing Role: Secondary-side fast recovery rectifier handling 100–200 kHz switching waveforms. Use Value: Low trr (≤500 ns) and 1000V VRRM support high efficiency and safe operation across wide input voltage ranges. |
| Consumer AC-DC Adapter Blocking | LED Driver Freewheeling Path |
Use Scenario: Input-stage reverse polarity guard in universal-input wall adapters for smart home devices. IC Role / Device Role / Timing Role: Series-connected protection diode before bridge rectifier or primary controller. Use Value: 1A IO rating and 1000V VRRM accommodate surge events and line-voltage peaks up to 375VAC RMS. | Use Scenario: Freewheeling path in constant-current LED drivers for street lighting and signage. IC Role / Device Role / Timing Role: Clamp diode across inductive driver switch to manage back-EMF during PWM off-time. Use Value: Fast recovery minimizes voltage overshoot and improves thermal margin under 100% duty-cycle transient loads. |
Availability
RS1MSWFMQ-7 is available at Aetrix Electronics and suitable for automotive power supply protection, industrial DC-DC converter output stages, and consumer AC-DC adapter blocking requiring stable component supply and AEC-Q101 compliance.
Supply support for RS1MSWFMQ-7 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 RS1MSWFMQ-7 belongs to Diodes' automotive-qualified fast recovery rectifier product line, engineered specifically for high-reliability reverse protection and high-frequency rectification in harsh-environment power systems.
FAQ
What is the maximum operating temperature for RS1MSWFMQ-7?
The RS1MSWFMQ-7 has an operating junction temperature range of −55°C to +150°C, validated per AEC-Q101 stress testing. Its thermal resistance (RθJA = 82°C/W) assumes use on FR4 with Diodes' recommended 1-inch² 2oz copper pad layout.
Is RS1MSWFMQ-7 compatible with lead-free reflow processes?
Yes. RS1MSWFMQ-7 features a matte tin finish over copper leadframe and is rated for lead-free reflow per JEDEC J-STD-020, with moisture sensitivity level 1 and peak reflow temperature support up to 260°C.
How does RS1MSWFMQ-7 differ from standard PN junction rectifiers?
RS1MSWFMQ-7 uses optimized silicon doping and processing to achieve ≤500ns reverse recovery time-significantly faster than general-purpose rectifiers (typically >2µs). This reduces switching loss and EMI in high-frequency power topologies.
Can RS1MSWFMQ-7 be used in parallel for higher current handling?
No. Parallel operation is not recommended due to forward voltage mismatch between units, which causes current imbalance. For >1A applications, select a higher-rated rectifier or verify derating curves and thermal coupling in the target PCB layout.
RS1MSWFMQ-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:
- 1.3 V @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 500 ns
- Current - Reverse Leakage @ Vr:
- 10 µA @ 1000 V
- Capacitance @ Vr, F:
- 4.7pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123F
- Operating Temperature - Junction:
- -55°C ~ 150°C
RS1MSWFMQ-7 FAQ
1.How can I place an order for RS1MSWFMQ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for RS1MSWFMQ-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 RS1MSWFMQ-7 reliable?
The price and inventory of RS1MSWFMQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS1MSWFMQ-7 is usually 5 days.
3.What payment methods are accepted for RS1MSWFMQ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS1MSWFMQ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RS1MSWFMQ-7?
RS1MSWFMQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RS1MSWFMQ-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 RS1MSWFMQ-7?
For technical support, including RS1MSWFMQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS1MSWFMQ-7 requirements.
6.How does Aetrix verify that RS1MSWFMQ-7 is sourced from the original manufacturer or authorized distributors?
All RS1MSWFMQ-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 RS1MSWFMQ-7 meets industry standards.
7.What is the process for return or replacement of RS1MSWFMQ-7?
All RS1MSWFMQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with RS1MSWFMQ-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 RS1MSWFMQ-7 part is unused and in its original packaging.
Return procedure for RS1MSWFMQ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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