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Taiwan Semiconductor Corporation S1GFS MWG
- Part No.:
- S1GFS MWG
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-128
- Datasheet:
-
S1GFS MWG.pdf
- Description:
- DIODE GEN PURP 400V 1A SOD128
- Quantity:
- Payment:
- Shipping:
Inventory:5,767
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Product details
Overview
S1GFS MWG from Taiwan Semiconductor is a 1A, 400V glass-passivated surface-mount standard rectifier diode in SOD-128 package, featuring 30A surge capability, 1.1V max forward voltage at 1A/25°C, and 1µA max reverse leakage at 25°C, used in DC-DC converters and switching-mode inverters.
For engineers reviewing the S1GFS MWG datasheet, S1GFS MWG pinout, S1GFS MWG application, or S1GFS MWG equivalent, key selection criteria include VRRM=400V, IF=1A, IFSM=30A, TJ(max)=150°C, and SOD-128 thermal performance (RθJA=82°C/W).
Technical Context
The S1GFS MWG is a single-die, unidirectional silicon PN junction rectifier optimized for high-efficiency AC-to-DC conversion in compact power supplies. Its glass-passivated junction ensures stable reverse characteristics across temperature, with rated VR(RMS)=280V and reverse current limited to 50µA at 125°C.
Thermal design relies on its SOD-128 package mounted on a 5mm×5mm Cu pad, delivering RθJL=29°C/W and RθJC=30°C/W. Junction capacitance is 9pF at 1MHz/4V, supporting moderate-frequency switching applications up to ~100kHz without excessive capacitive loss.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - Maximum repetitive reverse voltage before breakdown; defines safe operating range in bridge or flyback snubber circuits |
| IF | 1 A - Continuous average forward current; determines steady-state power dissipation (P ≈ VF × IF) |
| IFSM | 30 A - Non-repetitive surge current for 8.3 ms half-sine; supports inrush and transient overload tolerance |
| VF (max) | 1.1 V @ 1A, 25°C - Peak forward drop; sets conduction loss and thermal rise under full load |
| IR (max) | 1 µA @ 25°C - Reverse leakage current; critical for low-power standby and high-impedance bias networks |
| TJ(max) | 150 °C - Maximum junction temperature; constrains heatsinking requirements and derating curves |
| CJ | 9 pF @ 1 MHz, 4 V - Junction capacitance; limits high-frequency switching efficiency and EMI generation |
Pinout & Package
Package: SOD-128 - Surface-mount, flat lead, single-diode configuration with cathode band marking; moisture sensitivity level 1 (J-STD-020), UL 94V-0 molding compound, matte tin-plated leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry | Connected to lower-potential side of AC input or transformer secondary; requires trace width sufficient for 1A continuous + surge margin |
| Cathode | Forward current exit / polarity indicator | Marked by visible band; ties to output rail or smoothing capacitor positive; defines unidirectional conduction path |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable reverse leakage (<1µA @ 25°C) and long-term reliability under humidity and thermal cycling |
| SOD-128 package | Supports automated placement and reflow; delivers 29°C/W junction-to-lead thermal resistance on standard PCB pads |
| J-STD-020 Level 1 rating | Eliminates bake preconditioning prior to assembly; reduces manufacturing overhead and moisture-related defects |
| Halogen-free construction | Complies with IEC 61249-2-21; meets RoHS and environmental compliance requirements for industrial and consumer end equipment |
Applications
| DC-DC Converter | Switching Inverter |
|---|---|
Use Scenario: Secondary-side rectification in isolated buck-boost or flyback converters powering IoT sensors and embedded controllers. IC Role / Device Role / Timing Role: Unidirectional current steering diode converting high-frequency AC from transformer secondary to regulated DC output. Use Value: Low VF (1.1V max) minimizes conduction loss at 1A load; 150°C TJ(max) enables operation in thermally constrained enclosures. | Use Scenario: Output stage rectification in 24V–48V solar micro-inverters and UPS systems. IC Role / Device Role / Timing Role: Freewheeling and output rectifier handling bidirectional energy flow during PWM commutation cycles. Use Value: 30A IFSM withstands motor startup surges; 400V VRRM accommodates reflected spikes in inductive loads. |
| AC Adapter | Industrial Power Supply |
Use Scenario: Input rectification in universal-input (90–264VAC) wall adapters for USB-C PD and PoE devices. IC Role / Device Role / Timing Role: Bridge leg component converting line-frequency AC to pulsating DC prior to bulk filtering and regulation. Use Value: 280V VR(RMS) rating matches 230VAC RMS input; 1µA IR ensures minimal standby power draw. | Use Scenario: Auxiliary supply rectification in PLC I/O modules and motor drive control boards. IC Role / Device Role / Timing Role: Isolated auxiliary rail generation feeding gate drivers, optocouplers, and MCU logic rails. Use Value: SOD-128 footprint allows dense layout; UL 94V-0 housing enhances fire safety in enclosed industrial cabinets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R04S | VRRM=400V, IF=1A, VF=1.15V (max @ 1A), RθJA=75°C/W, DO-214AC package | Higher VF increases conduction loss; slightly better thermal resistance but larger footprint | Prefer when existing layout uses DO-214AC and thermal margin >7°C/W is available |
| ES1D-E3/57T | VRRM=200V, IF=1A, VF=0.95V (max @ 1A), SOD-123 package, RθJA=100°C/W | Lower VRRM restricts use to ≤140VAC inputs; smaller package reduces board area but worsens thermal performance | Select only for low-voltage, space-constrained designs where 200V rating suffices and derating to 75°C ambient is acceptable |
Compared with STTH1R04S and ES1D-E3/57T, the S1GFS MWG offers balanced trade-offs: identical 400V rating and 1A current as STTH1R04S but with superior moisture robustness (J-STD-020 Level 1 vs Level 2b) and halogen-free compliance, while providing higher voltage headroom than ES1D-E3/57T for universal-input designs.
Availability
S1GFS MWG is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and industrial power supplies requiring stable component supply, consistent parametric performance, and long-term manufacturability.
Supply support for S1GFS MWG 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in power rectifiers, TVS diodes, and MOSFETs for industrial and consumer markets.
The S1GFS MWG belongs to TSC's S1xFS standard rectifier family, designed specifically for cost-sensitive, high-volume AC/DC front-end and secondary-side rectification where reliability, thermal stability, and RoHS/halogen-free compliance are mandatory.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for the S1GFS MWG?
The S1GFS MWG has a VRRM rating of 400 V, meaning it can safely block up to 400 volts of reverse-biased voltage in repetitive operation. This value is confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version C2103). Exceeding this voltage risks avalanche breakdown and permanent device failure. The S1GFS MWG is part of the S1DFS–S1MFS series where 'G' explicitly denotes the 400V variant.
Does the S1GFS MWG have a halogen-free construction?
Yes, the S1GFS MWG is halogen-free in accordance with IEC 61249-2-21, as stated in the FEATURES section of the Taiwan Semiconductor datasheet. This applies to both the molding compound and internal materials. The S1GFS MWG also meets RoHS compliance requirements, making it suitable for environmentally regulated industrial and consumer end products where halogen content restrictions apply.
What is the forward voltage (VF) of the S1GFS MWG at 1A and 25°C?
The forward voltage of the S1GFS MWG is specified as a maximum of 1.1 V at 1.0 A forward current and 25°C junction temperature, per the Electrical Specifications table. A typical value of 0.99 V is also provided under the same conditions. This VF directly impacts conduction losses and thermal design-using the max value ensures worst-case power dissipation (1.1 W) is accounted for in PCB layout and thermal modeling for the S1GFS MWG.
Is the S1GFS MWG suitable for automated SMT assembly?
Yes, the S1GFS MWG is explicitly designed for automated placement, as noted in its FEATURES list. It uses the SOD-128 package with matte tin-plated leads compliant with J-STD-002 solderability standards and carries J-STD-020 Moisture Sensitivity Level 1-meaning no floor-life limitations or pre-bake requirements before reflow. These attributes make the S1GFS MWG compatible with high-speed pick-and-place and standard lead-free reflow profiles without process modification.
What is the junction-to-ambient thermal resistance (RθJA) of the S1GFS MWG?
The junction-to-ambient thermal resistance of the S1GFS MWG is 82°C/W when mounted on a standard 5 mm × 5 mm copper pad test board, as published in the Thermal Performance section of the datasheet. This value assumes natural convection and defines the temperature rise above ambient per watt of power dissipated. For reliable operation at full 1A load, ambient temperature must be derated accordingly-e.g., at 75°C ambient, maximum allowable power is ~0.91 W to stay within the 150°C TJ limit for the S1GFS MWG.
S1GFS MWG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- SOD-128
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 400 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:
- 1 µA @ 400 V
- Capacitance @ Vr, F:
- 9pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-128
- Operating Temperature - Junction:
- -55°C ~ 150°C
S1GFS MWG FAQ
1.How can I place an order for S1GFS MWG through Aetrix?
Please submit a Request for Quotation (RFQ) for S1GFS MWG 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 S1GFS MWG reliable?
The price and inventory of S1GFS MWG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S1GFS MWG is usually 5 days.
3.What payment methods are accepted for S1GFS MWG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S1GFS MWG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S1GFS MWG?
S1GFS MWG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S1GFS MWG 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 S1GFS MWG?
For technical support, including S1GFS MWG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S1GFS MWG requirements.
6.How does Aetrix verify that S1GFS MWG is sourced from the original manufacturer or authorized distributors?
All S1GFS MWG 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 S1GFS MWG meets industry standards.
7.What is the process for return or replacement of S1GFS MWG?
All S1GFS MWG units undergo pre-shipment inspection (PSI). If there is an issue with S1GFS MWG, 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 S1GFS MWG part is unused and in its original packaging.
Return procedure for S1GFS MWG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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