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Taiwan Semiconductor Corporation RS1KLWH
- Part No.:
- RS1KLWH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-123W
- Datasheet:
-
RS1KLWH.pdf
- Description:
- 250NS, 1A, 800V, FAST RECOVERY R
- Quantity:
- Payment:
- Shipping:
Inventory:20,000
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Product details
Overview
RS1KLWH from Taiwan Semiconductor is a 1A, 800V fast recovery surface-mount rectifier in SOD-123W package, featuring 250 ns reverse recovery time, 1.3 V max forward voltage at 1 A, and AEC-Q101 qualification for automotive-grade reliability. It serves as a primary AC/DC or DC/DC conversion diode in compact power supplies and lighting drivers.
For engineers reviewing the RS1KLWH datasheet, RS1KLWH pinout, RS1KLWH application, or RS1KLWH equivalent, key selection criteria include its 800 V repetitive peak reverse voltage, 30 A non-repetitive surge rating, 175 °C maximum junction temperature, and SOD-123W low-profile footprint compatibility with automated assembly.
Technical Context
The RS1KLWH employs a glass-passivated single-die silicon junction optimized for fast switching in high-frequency rectification. Its 250 ns trr and 5 µA max reverse leakage at 25 °C support efficient operation in snubber circuits and flyback secondary-side rectification.
Thermally, it delivers RθJL = 25 °C/W and RθJA = 80 °C/W, enabling 1 A continuous conduction in standard PCB layouts without forced airflow. The cathode-band polarity marking and matte tin-plated leads ensure robust solderability per J-STD-002.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - supports input rectification up to 565 V RMS AC or 800 V DC bus applications |
| IF | 1 A continuous - suitable for low-to-medium power SMPS outputs and LED driver return paths |
| trr | 250 ns - enables operation in 100–500 kHz switching converters with minimal switching loss |
| VF max | 1.3 V @ 1 A, 25 °C - limits conduction loss to ≤1.3 W at full rated current |
| IFSM | 30 A @ 8.3 ms - withstands inrush and transient surges common in automotive cold-crank conditions |
| TJ max | 175 °C - allows operation in under-hood environments and sealed enclosures without derating |
Pinout & Package
Package: SOD-123W - low-profile (1.0 mm height), JEDEC-standard surface-mount package with gull-wing leads; moisture sensitivity level 1 (J-STD-020); UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to lower-potential node (e.g., transformer secondary center-tap or ground return) |
| Cathode | Current exit point during forward conduction; marked by band | Connected to output rail or positive bus; polarity critical for correct rectification |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics including engine control modules and body electronics |
| Glass passivated junction | Enhances long-term reliability and humidity resistance in harsh environments |
| Low profile (SOD-123W) | Enables ultra-thin PCB designs and compatibility with tight board clearance constraints |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and global environmental compliance requirements |
Applications
| Automotive Lighting | DC-DC Converter Output |
|---|---|
Use Scenario: LED headlamp and DRL driver circuits requiring reverse polarity protection and output rectification. IC Role / Device Role / Timing Role: Output freewheeling/rectifying diode in buck or flyback topology. Use Value: 800 V VRRM accommodates load-dump transients; 250 ns trr minimizes switching loss at 250 kHz PWM frequencies. | Use Scenario: Secondary-side rectification in isolated 12 V → 5 V/3.3 V DC-DC modules for infotainment systems. IC Role / Device Role / Timing Role: Unidirectional current path delivering regulated output with minimal voltage drop. Use Value: 1.3 V VF max ensures ≥92% efficiency at 1 A; SOD-123W footprint fits dense layout constraints. |
| Snubber Network | Industrial Sensor Power Supply |
Use Scenario: RC snubber across MOSFET/IGBT switches in motor drives to suppress voltage spikes. IC Role / Device Role / Timing Role: Fast-recovery clamp diode discharging snubber capacitor during switching transitions. Use Value: 250 ns trr ensures rapid turn-off and precise energy dissipation timing; 30 A IFSM handles repetitive spike energy. | Use Scenario: Input rectification stage in 24 V AC/DC wall adapters powering factory-floor sensors. IC Role / Device Role / Timing Role: Bridge or single-diode front-end rectifier converting AC line to unregulated DC bus. Use Value: 175 °C TJ max supports operation in enclosed enclosures; AEC-Q101 grade adds field reliability beyond industrial spec. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R08 | Same 1 A / 800 V rating; trr = 150 ns (faster), VF = 1.25 V typ, TO-277A package | Higher thermal mass; requires larger pad area and different reflow profile | Preferred where faster recovery is critical and board space permits TO-277A footprint |
| ES1J | 1 A / 600 V; trr = 35 ns; SOD-123 package (not SOD-123W); no AEC-Q101 qualification | Limited to 600 V systems; unsuitable for automotive or 800 V bus applications | Cost-sensitive general-purpose use only; not recommended for automotive or high-reliability designs |
Compared with STTH1R08 and ES1J, RS1KLWH uniquely balances AEC-Q101 compliance, 800 V capability, and SOD-123W manufacturability-making it optimal for space-constrained automotive and industrial power stages where qualification and voltage margin are mandatory.
Availability
RS1KLWH is available at Aetrix Electronics and suitable for automotive lighting, DC-DC converter output stages, and industrial sensor power supplies requiring stable component supply and long-term production continuity.
Supply support for RS1KLWH 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 devices, rectifiers, and protection components.
The RS1xLWH series was designed specifically for high-reliability automotive and industrial surface-mount rectification, emphasizing AEC-Q101 qualification, low-profile packaging, and fast recovery performance in constrained thermal environments.
FAQ
What is the peak repetitive reverse voltage rating of RS1KLWH?
The RS1KLWH has a peak repetitive reverse voltage (VRRM) rating of 800 V. This value is confirmed in the Absolute Maximum Ratings table on page 2 of the official Taiwan Semiconductor datasheet (Version A2103). It defines the maximum DC or peak AC reverse voltage the device can block continuously without breakdown, making RS1KLWH suitable for 800 V DC bus and 565 V RMS AC applications.
Is RS1KLWH qualified for automotive applications?
Yes, RS1KLWH is AEC-Q101 qualified, as explicitly stated in the FEATURES section of the Taiwan Semiconductor datasheet. This qualification validates its reliability under automotive temperature cycling, mechanical shock, and humidity testing. RS1KLWH is therefore approved for use in automotive lighting, body control modules, and other non-safety-critical vehicle subsystems.
What is the reverse recovery time (trr) of RS1KLWH, and under what test conditions?
The reverse recovery time (trr) of RS1KLWH is 250 ns, measured under the conditions IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A, as specified in the Electrical Specifications table on page 2 of the datasheet. This parameter confirms its suitability for high-frequency switching applications such as 200–500 kHz DC-DC converters where fast turn-off minimizes switching losses.
What package does RS1KLWH use, and what are its key mechanical attributes?
RS1KLWH uses the SOD-123W package-a low-profile, surface-mount outline with gull-wing leads. Key attributes include 1.0 mm maximum height, UL 94V-0 flammability rating, matte tin-plated leads compliant with J-STD-002, and moisture sensitivity level 1. Its cathode is marked by a visible band, and typical weight is 0.016 g.
Does RS1KLWH have halogen-free and RoHS compliance documentation?
Yes, RS1KLWH is both RoHS compliant and halogen-free per IEC 61249-2-21, as confirmed in the FEATURES section of the Taiwan Semiconductor datasheet. These compliance statements are part of the official product specification and apply directly to RS1KLWH-not just the family-and are verified through material declarations and third-party testing.
RS1KLWH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- SOD-123W
- 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):
- 250 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 800 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123W
- Operating Temperature - Junction:
- -55°C ~ 175°C
RS1KLWH FAQ
1.How can I place an order for RS1KLWH through Aetrix?
Please submit a Request for Quotation (RFQ) for RS1KLWH 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 RS1KLWH reliable?
The price and inventory of RS1KLWH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS1KLWH is usually 5 days.
3.What payment methods are accepted for RS1KLWH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS1KLWH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RS1KLWH?
RS1KLWH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RS1KLWH 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 RS1KLWH?
For technical support, including RS1KLWH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS1KLWH requirements.
6.How does Aetrix verify that RS1KLWH is sourced from the original manufacturer or authorized distributors?
All RS1KLWH 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 RS1KLWH meets industry standards.
7.What is the process for return or replacement of RS1KLWH?
All RS1KLWH units undergo pre-shipment inspection (PSI). If there is an issue with RS1KLWH, 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 RS1KLWH part is unused and in its original packaging.
Return procedure for RS1KLWH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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