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Taiwan Semiconductor Corporation RS1KFSH
- Part No.:
- RS1KFSH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-128
- Datasheet:
-
RS1KFSH.pdf
- Description:
- DIODE GEN PURP 800V 1A SOD128
- Quantity:
- Payment:
- Shipping:
Inventory:28,000
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Product details
Overview
RS1KFSH from Taiwan Semiconductor is a 1A, 800V fast recovery surface-mount rectifier in SOD-128 package, featuring 500 ns reverse recovery time, 1.01 V forward voltage at 1.0A/25°C, and AEC-Q101 qualification for automotive-grade reliability. It serves as a freewheeling or snubber diode in DC/DC converters operating up to 175°C junction temperature.
For engineers reviewing the RS1KFSH datasheet, RS1KFSH pinout, RS1KFSH application, or RS1KFSH equivalent, key selection criteria include its 800V repetitive peak reverse voltage, 30A surge current rating, thermal resistance (RθJL = 29°C/W), and SOD-128 low-profile packaging for space-constrained automotive and industrial power supplies.
Technical Context
The RS1KFSH employs a glass-passivated silicon junction optimized for fast recovery (trr ≤ 500 ns) under IF = 0.5A, IR = 1.0A, Irr = 0.25A conditions. Its 800V VRRM and 140°C derated forward current capability support high-voltage DC/DC stages where low conduction loss and controlled switching behavior are critical.
Thermal performance is defined with RθJL = 29°C/W and RθJA = 84°C/W on a 5mm × 5mm Cu pad PCB. The device meets JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity, enabling reflow compatibility without baking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - Maximum repetitive reverse blocking voltage; defines usable input range in high-side clamp or flyback snubber circuits |
| IF | 1 A - Continuous average forward current at TA = 25°C; derates to ~0.65 A at 100°C ambient per curve data |
| trr | ≤500 ns - Measured at IF = 0.5A, IR = 1.0A, Irr = 0.25A; enables operation in 100–500 kHz DC/DC topologies with low switching loss |
| VF @ 1A/25°C | 1.01 V (typ), 1.30 V (max) - Directly impacts conduction loss (Pcond ≈ IF × VF) in high-efficiency power stages |
| RθJL | 29 °C/W - Junction-to-lead thermal resistance; supports direct thermal coupling to PCB copper for passive cooling in compact layouts |
| IFSM | 30 A - Non-repetitive surge rating (8.3 ms half-sine); withstands inrush and fault currents in automotive load-dump scenarios |
| TJ max | +175 °C - Maximum junction temperature; enables operation in under-hood automotive environments without active cooling |
Pinout & Package
SOD-128 surface-mount package: low-profile (1.20 mm max height), matte tin-plated leads, cathode indicated by band, polarity-critical for correct placement in freewheeling paths.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to switch node or inductive load return path; must handle full 1A DC + 30A surge |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; ties to positive rail in freewheeling configuration or snubber capacitor in clamp circuits |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTOL, TC, HTRB, and UHAST |
| Glass passivated junction | Enhances long-term reliability and humidity resistance vs. epoxy-passivated alternatives in harsh environments |
| Low profile SOD-128 | 1.2 mm height enables use in ultra-thin power modules and engine control units with strict Z-axis constraints |
| J-STD-020 Level 1 MSL | Zero bake requirement before reflow; simplifies SMT line integration and reduces manufacturing cost |
| Halogen-free & RoHS compliant | Meets EU Directive 2011/65/EU and automotive ELV requirements for end-of-life recyclability and safety |
Applications
| Automotive DC/DC Converters | Industrial Snubber Circuits |
|---|---|
Use Scenario: Step-down converter supplying 5V/3.3V rails to ECUs in 12V/48V vehicle architectures. IC Role / Device Role / Timing Role: Freewheeling diode synchronizing with high-side MOSFET switching at 200–300 kHz. Use Value: 500 ns trr minimizes reverse recovery charge (Qrr) and associated switching loss, improving efficiency by ~1.2% over slower 1A rectifiers. | Use Scenario: RCD snubber across IGBTs in motor drives handling 400V bus voltages. IC Role / Device Role / Timing Role: Clamp diode absorbing turn-off energy during IGBT commutation. Use Value: 800V VRRM provides 20% margin above 400V DC bus, while low CJ (7 pF) avoids parasitic resonance with snubber capacitor. |
| On-Board Charger (OBC) Auxiliary Supplies | Telecom Power Rectification |
Use Scenario: Isolated auxiliary supply powering gate drivers and controllers in EV OBC systems. IC Role / Device Role / Timing Role: Output rectifier in flyback or forward converter delivering <10W at 12–24V. Use Value: AEC-Q101 qualification ensures compliance with ISO 26262 ASIL-B functional safety requirements for auxiliary power domains. | Use Scenario: Input rectification stage in 48V telecom PSUs with hold-up capacitors. IC Role / Device Role / Timing Role: Primary-side bridge rectifier handling continuous 1A load with transient surges. Use Value: RθJL = 29°C/W enables direct thermal transfer to heatsink pads, maintaining TJ < 125°C without forced air in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-1EWH08-M3/45 | Same SOD-128 package, 800V VRRM, but trr = 35 ns (faster), VF = 1.15 V (higher) | Better suited for >1 MHz resonant converters; higher VF increases conduction loss in 100–300 kHz designs | Select when ultra-fast recovery outweighs forward loss penalty; verify layout for reduced EMI due to lower Qrr |
| ON Semiconductor FFPF10U80S | TO-220AC package, 800V, 10A rated, trr = 500 ns, but larger footprint and higher thermal mass | Requires PCB redesign and heatsinking; not suitable for space-constrained SMT-only assemblies | Choose only if higher current headroom or legacy through-hole compatibility is required |
Compared with VS-1EWH08-M3/45 and FFPF10U80S, the RS1KFSH delivers optimal balance of 800V blocking, 500 ns recovery, and SOD-128 compactness for automotive SMT power supplies-without sacrificing AEC-Q101 compliance or requiring layout changes.
Availability
RS1KFSH is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial snubber circuits, and telecom power rectification requiring stable component supply and AEC-Q101 assurance.
Supply support for RS1KFSH 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, serving automotive, industrial, and consumer markets since 1979.
The RS1xFSH series targets high-reliability surface-mount rectification in automotive power systems, emphasizing AEC-Q101 qualification, thermal robustness, and SOD-128 space efficiency for next-generation ECU and OBC designs.
FAQ
What is the maximum junction temperature rating for RS1KFSH?
The RS1KFSH has a maximum junction temperature (TJ) rating of +175°C, verified per absolute maximum ratings table. This allows reliable operation in under-hood automotive environments and high-ambient industrial settings. Derating curves confirm usable forward current down to ~0.4A at 150°C ambient when mounted on standard PCB copper.
Is RS1KFSH pin-compatible with other devices in the RS1xFSH family?
Yes, all RS1xFSH variants-including RS1DFSH, RS1GFSH, RS1JFSH, RS1KFSH, and RS1MFSH-share identical SOD-128 package dimensions, pinout, and thermal pad layout. Voltage rating differences (200V–1000V) do not affect mechanical or soldering compatibility, enabling drop-in replacement during design iteration.
Does RS1KFSH meet automotive qualification standards?
Yes, RS1KFSH is explicitly AEC-Q101 qualified per the manufacturer's datasheet revision B2304. Testing includes high-temperature operating life (HTOL), temperature cycling (TC), high-temperature reverse bias (HTRB), and unbiased highly accelerated stress test (UHAST), confirming suitability for automotive power electronics.
What is the reverse recovery time (trr) specification for RS1KFSH?
The RS1KFSH reverse recovery time is specified as ≤500 ns under conditions of IF = 0.5A, IR = 1.0A, and Irr = 0.25A. This value is confirmed in the Electrical Specifications table and applies identically to RS1MFSH, distinguishing it from faster variants like RS1JFSH (250 ns) and slower ones like RS1DFSH (150 ns).
Can RS1KFSH be used in lead-free reflow processes?
Yes, RS1KFSH is qualified for lead-free reflow per J-STD-020 Level 1 moisture sensitivity, meaning it can undergo standard Pb-free reflow profiles (peak 260°C) without baking. Matte tin-plated leads ensure solderability per J-STD-002, and the package meets UL 94V-0 flammability requirements.
RS1KFSH 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):
- 800 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 @ 800 V
- Capacitance @ Vr, F:
- 7pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-128
- Operating Temperature - Junction:
- -55°C ~ 150°C
RS1KFSH FAQ
1.How can I place an order for RS1KFSH through Aetrix?
Please submit a Request for Quotation (RFQ) for RS1KFSH 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 RS1KFSH reliable?
The price and inventory of RS1KFSH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS1KFSH is usually 5 days.
3.What payment methods are accepted for RS1KFSH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS1KFSH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RS1KFSH?
RS1KFSH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RS1KFSH 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 RS1KFSH?
For technical support, including RS1KFSH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS1KFSH requirements.
6.How does Aetrix verify that RS1KFSH is sourced from the original manufacturer or authorized distributors?
All RS1KFSH 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 RS1KFSH meets industry standards.
7.What is the process for return or replacement of RS1KFSH?
All RS1KFSH units undergo pre-shipment inspection (PSI). If there is an issue with RS1KFSH, 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 RS1KFSH part is unused and in its original packaging.
Return procedure for RS1KFSH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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