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Taiwan Semiconductor Corporation RS1KLSH
- Part No.:
- RS1KLSH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-123H
- Datasheet:
-
RS1KLSH.pdf
- Description:
- 300NS, 1.2A, 800V, FAST RECOVERY
- Quantity:
- Payment:
- Shipping:
Inventory:20,000
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Product details
Overview
RS1KLSH from Taiwan Semiconductor is a 1.2A, 800V fast recovery surface-mount rectifier in SOD-123HE package, designed for high-efficiency DC-DC conversion and automotive snubber circuits. It features 50A peak surge current capability, 300ns reverse recovery time, and AEC-Q101 qualification for under-hood reliability.
For engineers reviewing the RS1KLSH datasheet, RS1KLSH pinout, RS1KLSH application, or RS1KLSH equivalent, key selection factors include its 800V VRRM, 1.3V max forward voltage at 1.2A, 175°C junction temperature rating, and SOD-123HE thermal performance (RθJA = 80°C/W).
Technical Context
The RS1KLSH employs a single-die silicon PN junction structure optimized for fast recovery (trr ≤ 300 ns) with low stored charge, enabling efficient switching in high-frequency power supplies. Its 800V repetitive peak reverse voltage and 560V RMS reverse voltage support operation in 400V DC bus systems with safety margin.
Thermally, the SOD-123HE package delivers RθJL = 20°C/W to lead and operates from –55°C to +175°C, meeting automotive under-hood ambient requirements. Moisture sensitivity level 1 ensures compatibility with standard reflow processes without baking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - Supports 400V DC-link applications with 2× safety margin |
| IF | 1.2 A continuous - Rated for sustained conduction in compact power stages |
| IFSM | 50 A (8.3 ms) - Withstands inrush and transient surges in automotive loads |
| trr | 300 ns - Enables <1 MHz switching in flyback and snubber circuits |
| VF max | 1.3 V @ 1.2A, 25°C - Limits conduction loss to ≤1.56 W at full rated current |
| TJ max | +175°C - Allows operation in engine compartment environments without derating |
| RθJA | 80°C/W - Requires minimal PCB copper area for thermal management |
Pinout & Package
SOD-123HE surface-mount package with cathode-indicated band; matte tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to lower-potential node (e.g., switch node in flyback secondary) |
| Cathode | Current exit point during forward conduction; marked by band | Connected to output rail or snubber capacitor; defines polarity-sensitive placement |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Fast recovery (trr ≤ 300 ns) | Reduces switching losses and EMI in high-frequency converters vs. standard rectifiers |
| Moisture sensitivity level 1 | Eliminates pre-bake requirement for SMT assembly, reducing manufacturing cost |
| Halogen-free & RoHS compliant | Meets EU environmental directives and automotive material restrictions (ELV) |
| Single-die configuration | Ensures consistent electrical characteristics without parallel-matching concerns |
Applications
| Automotive LED Headlamp Driver | Industrial DC-DC Isolated Converter |
|---|---|
Use Scenario: High-side synchronous rectification in 12V-to-48V boost converter powering adaptive front lighting. IC Role / Device Role / Timing Role: Fast-recovery output rectifier handling 1.2A continuous current with minimal voltage overshoot during turn-off. Use Value: 300ns trr prevents cross-conduction losses and enables stable regulation at 500kHz switching frequency. | Use Scenario: Secondary-side rectification in 24V input, 5V/3A isolated flyback supplying PLC I/O modules. IC Role / Device Role / Timing Role: Unidirectional current path with low VF to maintain >88% efficiency at full load. Use Value: 1.3V max VF limits conduction loss to 1.56W, reducing heatsink requirements in sealed enclosures. |
| Automotive Snubber Network | Consumer AC-DC Adapter Output Stage |
Use Scenario: RC snubber across MOSFET drain-source in 48V BLDC motor gate driver. IC Role / Device Role / Timing Role: Clamp diode absorbing inductive kickback energy during MOSFET turn-off. Use Value: 50A IFSM withstands repeated 40A transient spikes without degradation over 10-year vehicle life. | Use Scenario: Output rectification in 90–264VAC input, 12V/1A adapter for smart home hubs. IC Role / Device Role / Timing Role: General-purpose fast recovery rectifier replacing slower 1N4007 variants. Use Value: SOD-123HE footprint enables direct drop-in replacement while improving efficiency by 2.3% at 1.2A load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1L06S | Same 1.2A/600V rating but 500ns trr; TO-277 package (larger, higher RθJA) | Higher thermal resistance (110°C/W) requires larger copper pour | Prefer RS1KLSH where board space and switching speed are constrained |
| ON Semi MUR120ES | 1.2A/200V rating; 35ns trr but insufficient VRRM for 800V designs | Not suitable for 400V DC bus applications due to voltage limitation | Select RS1KLSH when 800V blocking and AEC-Q101 compliance are mandatory |
Compared with STTH1L06S and MUR120ES, the RS1KLSH uniquely balances 800V VRRM, 300ns trr, AEC-Q101 qualification, and SOD-123HE compactness-making it optimal for space-constrained automotive and industrial converters requiring robust surge immunity and thermal stability.
Availability
RS1KLSH is available at Aetrix Electronics and suitable for automotive LED drivers, industrial DC-DC converters, and snubber networks requiring stable component supply across multi-year production cycles.
Supply support for RS1KLSH 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 global automotive, industrial, and consumer markets since 1979.
The RS1KLSH belongs to TSC's AEC-Q101-qualified fast recovery rectifier family, engineered specifically for high-reliability power conversion in harsh-temperature automotive and industrial environments.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for RS1KLSH?
The RS1KLSH has a maximum repetitive peak reverse voltage of 800 V, as specified in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version B2304). This rating allows the RS1KLSH to safely block reverse voltages up to 800 V in continuous operation, making it suitable for 400 V DC bus applications with adequate safety margin.
Is RS1KLSH qualified for automotive applications?
Yes, the RS1KLSH is AEC-Q101 qualified per the manufacturer's documentation. This qualification covers stress tests including temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge (ESD), confirming its suitability for under-hood automotive use. The RS1KLSH's –55°C to +175°C operating range and moisture sensitivity level 1 further support automotive manufacturing and field reliability requirements.
What is the forward voltage (VF) of RS1KLSH at rated current?
The RS1KLSH exhibits a maximum forward voltage of 1.3 V at 1.2 A and 25°C junction temperature, as measured under pulsed conditions (PW = 0.3 ms). This VF value directly determines conduction loss-calculating to ≤1.56 W at full rated current-and is critical for thermal design in compact power supplies where the RS1KLSH is deployed.
Does RS1KLSH have a defined reverse recovery time (trr)?
Yes, the RS1KLSH has a typical reverse recovery time of 300 ns, measured at IF = 0.5 A, IR = 1.0 A, and IRR = 0.25 A. This parameter is explicitly listed in the Electrical Specifications table and confirms the device's suitability for high-frequency switching applications such as DC-DC converters operating above 300 kHz, where fast recovery minimizes switching losses and EMI generation in the RS1KLSH circuit implementation.
What package type does RS1KLSH use, and what are its key mechanical attributes?
The RS1KLSH uses the SOD-123HE surface-mount package, characterized by a 0.85 mm body height, 1.65 mm length, and 0.95 mm width. Key attributes include matte tin-plated leads compliant with J-STD-002, UL 94V-0 molding compound, cathode band polarity marking, and a weight of approximately 0.022 g. These features ensure reliable automated placement and soldering for the RS1KLSH in high-volume manufacturing environments.
RS1KLSH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- SOD-123H
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 800 V
- Current - Average Rectified (Io):
- 1.2A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 1.2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 300 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-123HE
- Operating Temperature - Junction:
- -55°C ~ 150°C
RS1KLSH FAQ
1.How can I place an order for RS1KLSH through Aetrix?
Please submit a Request for Quotation (RFQ) for RS1KLSH 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 RS1KLSH reliable?
The price and inventory of RS1KLSH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS1KLSH is usually 5 days.
3.What payment methods are accepted for RS1KLSH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS1KLSH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RS1KLSH?
RS1KLSH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RS1KLSH 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 RS1KLSH?
For technical support, including RS1KLSH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS1KLSH requirements.
6.How does Aetrix verify that RS1KLSH is sourced from the original manufacturer or authorized distributors?
All RS1KLSH 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 RS1KLSH meets industry standards.
7.What is the process for return or replacement of RS1KLSH?
All RS1KLSH units undergo pre-shipment inspection (PSI). If there is an issue with RS1KLSH, 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 RS1KLSH part is unused and in its original packaging.
Return procedure for RS1KLSH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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