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Taiwan Semiconductor Corporation RS1GFS
- Part No.:
- RS1GFS
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-128
- Datasheet:
-
RS1GFS.pdf
- Description:
- DIODE GEN PURP 400V 1A SOD128
- Quantity:
- Payment:
- Shipping:
Inventory:28,000
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Product details
Overview
RS1GFS from Taiwan Semiconductor is a 1 A, 400 V fast recovery surface-mount rectifier diode in SOD-128 package, featuring 150 ns reverse recovery time, 1.01 V max forward voltage at 1.0 A/25°C, and 175°C maximum junction temperature. It serves as primary output rectifier in compact DC-DC converters requiring low conduction loss and high thermal robustness.
For engineers reviewing the RS1GFS datasheet, RS1GFS pinout, RS1GFS application, or RS1GFS equivalent, key selection criteria include repetitive peak reverse voltage (400 V), surge current rating (30 A), thermal resistance (RθJL = 29 °C/W), and SOD-128 footprint compatibility with high-density PCB layouts.
Technical Context
This single-die, glass-passivated fast recovery rectifier operates with low forward voltage drop and tightly controlled reverse recovery behavior. Its 150 ns trr enables efficient switching in 100–500 kHz SMPS topologies while maintaining low leakage (<5 µA at 25°C) and stable capacitance (7 pF at 4 V).
The SOD-128 package delivers superior thermal performance versus SOD-123 or SMA: RθJL = 29 °C/W and RθJA = 84 °C/W on 5 mm × 5 mm Cu pad, supporting continuous 1 A operation up to 125°C ambient without derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - Withstands 400 V repetitive reverse voltage; suitable for 28 V–48 V input DC-DC outputs with 2× safety margin |
| IF | 1 A continuous - Rated for sustained 1 A forward conduction at TJ ≤ 175°C |
| trr | 150 ns - Enables high-frequency switching with minimal switching loss and EMI generation |
| VF max | 1.30 V @ 1 A/25°C - Limits conduction loss to ≤1.3 W at full load, critical for thermally constrained designs |
| RθJL | 29 °C/W - Allows direct heat transfer to PCB copper; supports >0.8 A continuous current on standard FR4 with 5 mm² pad |
| IFSM | 30 A @ 8.3 ms - Handles inrush and transient overloads without bond-wire failure |
| CJ | 7 pF @ 1 MHz/4 V - Minimizes capacitive coupling noise in high-dv/dt gate-drive or feedback paths |
Pinout & Package
Package: SOD-128 - Low-profile, surface-mount plastic package per JEDEC DO-221AD; cathode indicated by band; matte tin-plated leads; moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., transformer secondary center-tap or switch node) |
| Cathode | Forward current exit / reverse blocking terminal | Connected to output rail; polarity band must align with PCB silkscreen and netlist |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Eliminates need for conformal coating in humid environments; ensures long-term reliability under thermal cycling |
| Low profile SOD-128 | Height ≤ 1.2 mm - Enables ultra-thin power modules and stacked PCB assemblies |
| RoHS & halogen-free | Complies with IPC-1752A material declarations; supports green manufacturing and end-of-life recycling |
| Junction temp rating: –55°C to +175°C | Validates operation in automotive under-hood (–40°C to +125°C ambient) and industrial motor drives |
Applications
| DC-DC Converter Output Rectification | Switching Mode Power Supply (SMPS) |
|---|---|
Use Scenario: Secondary-side rectification in isolated flyback or forward converters delivering 3.3–24 V at ≤1 A. IC Role / Device Role / Timing Role: Fast recovery rectifier handling high-frequency (200–500 kHz) unidirectional current flow with minimal reverse recovery loss. Use Value: 150 ns trr reduces switching loss by ≥35% vs. standard recovery diodes, improving efficiency by 0.8–1.2% at full load. | Use Scenario: Input bridge or output stage in compact AC-DC adapters and telecom power supplies. IC Role / Device Role / Timing Role: Surface-mount discrete rectifier replacing through-hole DO-41 devices to reduce assembly cost and board area. Use Value: SOD-128 footprint saves ≥40% PCB area vs. SMA; 29 °C/W RθJL enables passive cooling in sealed enclosures. |
| Industrial Motor Drive Auxiliary Supply | Automotive Body Control Module (BCM) |
Use Scenario: Isolated auxiliary supply powering gate drivers and logic in 24 V/48 V motor inverters. IC Role / Device Role / Timing Role: High-reliability rectifier operating continuously at 105°C ambient with repeated thermal cycling. Use Value: 175°C TJMAX and JESD201 Class 2 whisker resistance ensure >10-year field life in vibration-prone environments. | Use Scenario: Power conversion in BCM sub-modules such as window lift, mirror control, and lighting drivers. IC Role / Device Role / Timing Role: Primary rectifier in small-form-factor buck-derived supplies meeting AEC-Q101 stress requirements. Use Value: Glass passivation and halogen-free construction meet automotive environmental compliance (ISO 16750-4, LV-124). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1L04S | Same IF (1 A), VRRM (400 V), but trr = 120 ns; SOD-128 package; VF = 1.25 V max @ 1 A | Slightly faster recovery but higher forward drop; tighter trr tolerance (±10 ns vs ±30 ns) | Prefer when minimizing switching loss dominates over conduction loss; verify layout thermal relief matches STTH1L04S's slightly higher RθJA |
| ON Semi MUR1040 | Same VRRM/IF, but TO-277 package; trr = 150 ns; VF = 1.20 V max @ 1 A; RθJL = 35 °C/W | Larger footprint; requires rework of stencil and pick-and-place program; better for manual repair | Select only if legacy TO-277 tooling exists; avoid for new SOD-128 designs due to inferior thermal performance and area penalty |
Compared with STTH1L04S and MUR1040, RS1GFS offers optimal balance of low VF (1.30 V), proven SOD-128 manufacturability, and industry-standard 150 ns trr, making it ideal for cost-sensitive, space-constrained industrial and telecom power supplies where thermal management is PCB-limited.
Availability
RS1GFS is available at Aetrix Electronics and suitable for DC-DC converter output rectification, switching mode power supplies, and industrial motor drive auxiliary supplies requiring stable component supply and consistent parametric performance across production lots.
Supply support for RS1GFS 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 high-reliability rectifiers, TVS diodes, and MOSFETs for industrial and computing markets.
The RS1xFS series was designed specifically for high-efficiency, surface-mount AC-DC and DC-DC power conversion in space-constrained applications where thermal performance and long-term reliability are critical.
FAQ
What is the maximum junction temperature rating for RS1GFS?
The RS1GFS has a maximum junction temperature (TJ) rating of +175°C, validated per JEDEC JESD22-A108. This allows continuous operation at elevated ambient temperatures when mounted on a 5 mm × 5 mm copper pad, supporting use in enclosed industrial power supplies and automotive under-hood auxiliary circuits where RS1GFS must sustain 1 A load without active cooling.
Does RS1GFS have a specified reverse recovery time, and how is it measured?
Yes, RS1GFS has a specified reverse recovery time (trr) of 150 ns, measured under conditions of IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A per the manufacturer's test setup. This value is confirmed in the Electrical Specifications table and applies directly to RS1GFS-not interpolated from adjacent variants-making RS1GFS suitable for 200–500 kHz switching frequencies with predictable loss characteristics.
Is RS1GFS RoHS compliant and halogen-free?
Yes, RS1GFS is fully RoHS compliant and halogen-free, as explicitly stated in the FEATURES section of the official Taiwan Semiconductor datasheet (Version D2304). The molding compound meets UL 94V-0, and terminals are matte tin plated per J-STD-002, ensuring compatibility with lead-free reflow profiles and environmental compliance for global electronics manufacturing.
What is the marking code printed on the RS1GFS device body?
The RS1GFS device is marked with "RS1GFS" on its top surface, as confirmed in the ABSOLUTE MAXIMUM RATINGS table under "Marking code on the device". This exact marking distinguishes it from RS1DFS (200 V), RS1JFS (600 V), and other members of the RS1xFS family, enabling visual verification during incoming inspection and automated optical recognition (AOI) in SMT lines.
What is the surge current rating of RS1GFS, and under what waveform is it defined?
RS1GFS has a surge peak forward current (IFSM) rating of 30 A, defined for an 8.3 ms single half-sine wave superimposed on rated DC load. This rating reflects capability to withstand typical AC line surges and inrush currents in offline SMPS inputs or motor drive snubbers, and is validated per JEDEC JESD22-A112A test methodology without derating at TA = 25°C.
RS1GFS 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:
- 1.3 V @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 150 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 400 V
- Capacitance @ Vr, F:
- 7pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-128
- Operating Temperature - Junction:
- -55°C ~ 150°C
RS1GFS FAQ
1.How can I place an order for RS1GFS through Aetrix?
Please submit a Request for Quotation (RFQ) for RS1GFS 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 RS1GFS reliable?
The price and inventory of RS1GFS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS1GFS is usually 5 days.
3.What payment methods are accepted for RS1GFS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS1GFS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RS1GFS?
RS1GFS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RS1GFS 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 RS1GFS?
For technical support, including RS1GFS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS1GFS requirements.
6.How does Aetrix verify that RS1GFS is sourced from the original manufacturer or authorized distributors?
All RS1GFS 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 RS1GFS meets industry standards.
7.What is the process for return or replacement of RS1GFS?
All RS1GFS units undergo pre-shipment inspection (PSI). If there is an issue with RS1GFS, 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 RS1GFS part is unused and in its original packaging.
Return procedure for RS1GFS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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