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Diodes Incorporated RS1MWF-7
- Part No.:
- RS1MWF-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- SOD-123F
- Datasheet:
-
RS1MWF-7.pdf
- Description:
- DIODE GEN PURP 1KV 1A SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:204,088
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Product details
Overview
RS1MWF-7 from Diodes Incorporated is a 1.0A, 1000V fast recovery surface-mount rectifier in SOD123F package, featuring 240–500 ns reverse recovery time, ≤5 µA reverse leakage at 1000 V, and 30 A non-repetitive surge capability. It serves as a primary AC-DC rectification device in compact power adapters and DC-DC converter input stages.
For engineers reviewing the RS1MWF-7 datasheet, RS1MWF-7 pinout, RS1MWF-7 application, or RS1MWF-7 equivalent, key selection criteria include peak repetitive reverse voltage (1000 V), average forward current rating (1.0 A at TT = +88°C), thermal resistance (RθJA = 65 °C/W), and fast recovery performance for high-frequency switching efficiency.
Technical Context
The RS1MWF-7 employs glass-passivated silicon die construction to ensure stable junction behavior under thermal cycling and high-voltage stress. Its 1000 V VRRM and low 5 µA IR at rated VR support reliable operation in universal-input offline SMPS front ends.
With tRR specified between 240 ns and 500 ns (IF = 0.5 A, IR = 1.0 A), the device minimizes switching losses during turn-off in 50–100 kHz flyback and forward converters. The SOD123F package enables high-density PCB layouts while maintaining adequate thermal dissipation via its 65 °C/W RθJA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - Withstands peak line voltage up to 707 V RMS in universal AC input designs without breakdown. |
| IO | 1.0 A @ TT = +88°C - Sustains continuous output current in thermally constrained adapter PCBs. |
| VF Max | 1.3 V @ IF = 1 A, TJ = +25°C - Limits conduction loss to ≤1.3 W per diode in single-phase bridge configurations. |
| IR Max | 5 µA @ VR = 1000 V, TJ = +25°C - Reduces standby power loss in energy-efficient chargers meeting Level VI requirements. |
| tRR | 240–500 ns - Enables efficient operation in 50–150 kHz switching topologies with minimal tail current loss. |
| IFSM | 30 A @ 8.3 ms half-sine - Survives cold-start inrush surges in unregulated AC-DC inputs without failure. |
| RθJA | 65 °C/W - Allows ~1.0 W power dissipation with <10°C rise above ambient on standard FR-4 board. |
Pinout & Package
Package: SOD123F - Surface-mount, low-profile plastic package (3.5 mm × 1.8 mm × 1.1 mm) with cathode band marking and matte tin-plated copper leadframe. Moisture sensitivity level 1 (J-STD-020).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input terminal for forward conduction path | Connected to AC source or transformer secondary; polarity-sensitive layout required. |
| Cathode | Output terminal for forward conduction path | Feeds bulk capacitor or downstream converter; marked by visible band on package top. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die | Enhances long-term reliability under humidity and thermal stress; eliminates need for conformal coating in industrial environments. |
| Fast recovery time (240–500 ns) | Reduces switching loss and EMI generation in high-frequency SMPS, improving overall system efficiency by ≥0.5%. |
| 30 A surge rating | Eliminates need for external NTC thermistors or inrush limiters in cost-sensitive AC-DC adapters. |
| RoHS 3 / Halogen-free / "Green" | Meets global environmental compliance mandates (EU 2015/863/EU) without compromising thermal or electrical performance. |
Applications
| Switching Mode Power Supplies | DC-DC Converters |
|---|---|
Use Scenario: Primary-side rectification in 5–30 W offline flyback converters with universal AC input (85–265 VAC). IC Role / Device Role / Timing Role: High-voltage rectifier converting transformer secondary AC to pulsating DC before bulk capacitance. Use Value: 1000 V VRRM ensures margin against reflected voltage spikes; 240 ns tRR reduces switching node ringing and EMI filter size. | Use Scenario: Input rectification stage in isolated 12 V–48 V DC-DC modules powered from telecom or server backplanes. IC Role / Device Role / Timing Role: Unidirectional current path enabling galvanic isolation and voltage step-down via transformer coupling. Use Value: Low 5 µA IR prevents discharge of hold-up capacitors during standby, supporting >100-hour retention in backup systems. |
| AC-DC Adapters/Chargers | Mobile Devices |
Use Scenario: Output rectification in compact USB-C PD adapters (20–65 W) with high power density requirements. IC Role / Device Role / Timing Role: Secondary-side synchronous or Schottky-replacement rectifier delivering regulated 5–20 V output. Use Value: SOD123F footprint saves >30% board area vs. SMA; 1.3 V VF balances conduction loss and thermal rise in sealed enclosures. | Use Scenario: Battery charging path management and reverse-polarity protection in portable medical monitors and handheld test equipment. IC Role / Device Role / Timing Role: Isolation diode preventing backfeed from Li-ion battery into USB VBUS during host disconnection. Use Value: 30 A IFSM withstands hot-plug transients; -55°C to +150°C operating range supports extended field deployment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MUR110SFT1G | Same SOD123F package; 1000 V VRRM, but higher VF (1.5 V typ @ 1 A) and slower tRR (50–75 ns faster than RS1MWF-7's min spec). | Slightly lower efficiency in high-duty-cycle converters due to higher conduction loss. | Select when legacy qualification or second-source validation is required; verify thermal margin with RθJA = 70 °C/W. |
| Vishay VS-1EWH01-M3/5AT | 1000 V VRRM, 1 A IO, but in SOD-123FL (longer leads); tRR = 250 ns max, IR = 10 µA @ 1000 V. | Higher leakage may increase standby loss in energy-sensitive applications. | Prefer for designs requiring longer creepage distance; confirm pad compatibility with SOD123F land pattern. |
Compared with MUR110SFT1G and VS-1EWH01-M3/5AT, RS1MWF-7 delivers superior thermal resistance (65 °C/W), tighter leakage control (≤5 µA), and optimized fast recovery for high-frequency SMPS-making it the preferred choice where board space, efficiency, and temperature stability are critical.
Availability
RS1MWF-7 is available at Aetrix Electronics and suitable for switching mode power supplies, AC-DC adapters, and mobile device power management requiring stable component supply across production lifecycles.
Supply support for RS1MWF-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 RS1MWF-7 belongs to Diodes' high-voltage fast recovery rectifier product line, engineered specifically for compact, high-efficiency AC-DC and DC-DC conversion in consumer, industrial, and computing power supplies.
FAQ
What is the maximum junction temperature for RS1MWF-7?
The RS1MWF-7 has an operating junction temperature range of –55°C to +150°C. Its thermal resistance (RθJA = 65 °C/W) allows safe operation at full 1.0 A load with ≤85°C ambient temperature on standard FR-4 PCBs, assuming 0.2" × 0.25" copper pad per JEDEC test conditions.
Is RS1MWF-7 suitable for automotive applications?
RS1MWF-7 is not AEC-Q200 qualified. For automotive use, Diodes offers Q-suffix variants (e.g., RS1MWFQ-7) manufactured in IATF 16949-certified facilities and qualified to AEC-Q200 standards. These versions undergo additional stress testing and change control protocols required for vehicular deployment.
How does RS1MWF-7 compare to standard PN junction rectifiers?
Unlike general-purpose PN rectifiers (e.g., 1N4007), RS1MWF-7 uses optimized fast recovery epitaxial construction, achieving tRR of 240–500 ns versus >2 µs-reducing switching loss and EMI in high-frequency converters. Its lower VF (1.3 V max) and tighter IR (5 µA max) further improve efficiency over legacy devices.
Can RS1MWF-7 be used in parallel for higher current handling?
Parallel operation is not recommended without external balancing components. The RS1MWF-7 exhibits typical VF variation of ±0.1 V across units, leading to current imbalance. If higher current is needed, select a higher-rated part (e.g., RS2MWF-7) or implement matched VF binning and individual series resistors per diode leg.
RS1MWF-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:
- 5 µA @ 1000 V
- Capacitance @ Vr, F:
- 8pF @ 1V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123F
- Operating Temperature - Junction:
- -55°C ~ 150°C
RS1MWF-7 FAQ
1.How can I place an order for RS1MWF-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for RS1MWF-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 RS1MWF-7 reliable?
The price and inventory of RS1MWF-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS1MWF-7 is usually 5 days.
3.What payment methods are accepted for RS1MWF-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS1MWF-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RS1MWF-7?
RS1MWF-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RS1MWF-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 RS1MWF-7?
For technical support, including RS1MWF-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS1MWF-7 requirements.
6.How does Aetrix verify that RS1MWF-7 is sourced from the original manufacturer or authorized distributors?
All RS1MWF-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 RS1MWF-7 meets industry standards.
7.What is the process for return or replacement of RS1MWF-7?
All RS1MWF-7 units undergo pre-shipment inspection (PSI). If there is an issue with RS1MWF-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 RS1MWF-7 part is unused and in its original packaging.
Return procedure for RS1MWF-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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