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Taiwan Semiconductor Corporation RS1KL
- Part No.:
- RS1KL
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-219AB
- Datasheet:
-
RS1KL.pdf
- Description:
- DIODE GP 800V 800MA SUB SMA
- Quantity:
- Payment:
- Shipping:
Inventory:39,201
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Product details
Overview
RS1KL from Taiwan Semiconductor is a fast recovery surface mount rectifier diode with 800 V repetitive peak reverse voltage (VRRM), 0.8 A average forward current (IF), and 500 ns reverse recovery time (trr), designed for high-efficiency DC-DC converters and switching-mode power supplies operating at elevated frequencies.
For engineers reviewing the RS1KL datasheet, RS1KL pinout, RS1KL application, or RS1KL equivalent, key selection criteria include its Sub SMA package compatibility, 30 A non-repetitive surge rating (IFSM), 1.3 V max forward voltage at 0.8 A, 5 µA max reverse leakage at 25°C, and junction temperature range of –55°C to +150°C.
Technical Context
The RS1KL operates as a single-die, unidirectional silicon rectifier with glass-passivated junction for enhanced reliability and moisture resistance (J-STD-020 Level 1). Its fast recovery characteristic enables reduced switching losses in high-frequency SMPS topologies.
Thermally, it features a junction-to-lead resistance of 32°C/W and junction-to-ambient resistance of 105°C/W, supporting operation up to 150°C junction temperature with appropriate PCB copper area per the Sub SMA pad layout recommendation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - Maximum repetitive reverse blocking voltage; defines usable input voltage range in offline or high-voltage DC-DC stages |
| IF | 0.8 A - Continuous average forward current; determines steady-state power handling capability with derating above 75°C ambient |
| trr | 500 ns - Measured at IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A; enables efficient operation in 100–500 kHz switchers |
| VF (max) | 1.3 V @ 0.8 A, 25°C - Directly impacts conduction loss and thermal design in high-duty-cycle applications |
| IR (max) | 5 µA @ 25°C, rated VR - Low leakage supports stable biasing and low standby power in auxiliary rails |
| RθJL | 32 °C/W - Enables direct thermal path to PCB copper; critical for thermal management without heatsink in space-constrained layouts |
Pinout & Package
Package: Sub SMA - Surface-mount plastic package with matte tin-plated leads, UL 94V-0 molding compound, cathode polarity indicated by band, weight ≈ 0.019 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., transformer secondary center-tap or switch node return) in bridge or half-wave configurations |
| Cathode | Forward current exit / reverse blocking terminal | Marked with band; ties to output rail or filter capacitor positive; withstands up to 800 V reverse bias |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Improves long-term reliability under humid or thermally cycling conditions; eliminates need for conformal coating in industrial environments |
| Fast recovery (500 ns) | Reduces reverse recovery charge (Qrr) and associated switching losses versus standard rectifiers, enabling higher frequency operation |
| J-STD-020 Level 1 moisture sensitivity | Allows unlimited floor life before reflow; eliminates baking requirement and simplifies SMT line integration |
| RoHS & halogen-free compliance | Meets IEC 61249-2-21 and EU RoHS directives; supports environmentally regulated end equipment including industrial and telecom systems |
Applications
| AC-DC Adapter Power Supply | Isolated DC-DC Converter Secondary |
|---|---|
Use Scenario: 12 V/24 V output stage in universal-input offline adapters for consumer electronics and IoT gateways. IC Role / Device Role / Timing Role: Output rectifier in flyback or forward converter, conducting during transformer reset phase. Use Value: 800 V VRRM provides margin against reflected transients; 500 ns trr minimizes switching loss at 65–130 kHz operation. | Use Scenario: Secondary-side rectification in isolated 48 V–12 V DC-DC modules used in server PSUs and telecom rectifiers. IC Role / Device Role / Timing Role: Unidirectional current valve converting transformer AC output to regulated DC bus. Use Value: 0.8 A IF and 30 A IFSM support peak-loaded transient response; Sub SMA footprint enables high-density layout. |
| Industrial Motor Drive Auxiliary Supply | LED Driver Input Rectification |
Use Scenario: Auxiliary 15 V supply generation from 3-phase rectified bus in variable frequency drives. IC Role / Device Role / Timing Role: Fast-recovery rectifier in voltage-doubler or single-phase bridge feeding linear regulator or buck controller. Use Value: 150°C TJMAX ensures robustness under high ambient temperatures near power stages; 32°C/W RθJL allows direct thermal coupling to metal-core PCB. | Use Scenario: Input-stage rectification in constant-current LED drivers for street lighting and commercial fixtures. IC Role / Device Role / Timing Role: Line-frequency rectifier preceding PFC stage or directly feeding buck/boost LED controller. Use Value: 5 µA IR at 25°C prevents standby current drift; glass passivation resists phosphor-induced humidity degradation in sealed luminaires. |
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 VRRM (800 V), slightly lower trr (350 ns), higher IF (1.0 A), DO-214AC package | DO-214AC has larger footprint and higher RθJA; requires PCB layout revision | Select when higher average current or faster recovery is prioritized over board space |
| MBR0580 | Schottky structure, lower VF (~0.85 V), but only 80 V VRRM, not suitable for 800 V blocking | Only viable in low-voltage secondary-side applications; cannot replace RS1KL in primary-side or high-VR positions | Use only where reverse voltage ≤ 80 V and ultra-low conduction loss is critical |
Compared with STTH1R08 and MBR0580, the RS1KL offers optimal balance of 800 V blocking, Sub SMA compactness, and 500 ns recovery for cost-sensitive industrial and adapter designs-without requiring layout changes or sacrificing voltage margin.
Availability
RS1KL is available at Aetrix Electronics and suitable for DC-DC converters, switching-mode inverters, and industrial auxiliary power supplies requiring stable component supply across multi-year production cycles.
Supply support for RS1KL 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 industrial, computing, and consumer markets since 1979.
The RS1KL belongs to TSC's RS1xL fast recovery rectifier family, engineered specifically for high-frequency switching power conversion where efficiency, thermal robustness, and surface-mount manufacturability are essential.
FAQ
What is the maximum junction temperature rating for RS1KL?
The RS1KL has a maximum junction temperature (TJ) rating of +150°C, with a storage temperature range of –55°C to +150°C. This allows reliable operation in demanding industrial environments such as motor drives and outdoor power supplies. Thermal design must account for its 32°C/W junction-to-lead resistance and recommended Sub SMA pad layout to maintain safe operating limits under full load. The RS1KL datasheet specifies derating curves for forward current above 75°C ambient.
Does RS1KL have a specified reverse recovery time, and how is it measured?
Yes, RS1KL has a maximum reverse recovery time (trr) of 500 ns, measured under standardized conditions: IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A, at TJ = 25°C. This parameter is critical for minimizing switching losses in high-frequency converters. The RS1KL's trr is confirmed in the Electrical Specifications table on page 2 of the official Taiwan Semiconductor datasheet N2103.
What package type does RS1KL use, and what are its key mechanical properties?
RS1KL uses the Sub SMA package-a compact surface-mount outline with matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance. Its molding compound meets UL 94V-0 flammability rating, and polarity is marked by a cathode band. At approximately 0.019 g, the RS1KL supports high-speed automated placement and reflow without tombstoning.
Is RS1KL RoHS and halogen-free compliant?
Yes, RS1KL is fully RoHS compliant and halogen-free per IEC 61249-2-21. Taiwan Semiconductor certifies this compliance in the product documentation (Version N2103), confirming absence of brominated flame retardants and restricted substances. This makes RS1KL suitable for export-controlled and environmentally regulated applications including EU-based industrial equipment and telecom infrastructure.
What is the forward voltage drop of RS1KL at rated current?
The RS1KL has a maximum forward voltage (VF) of 1.3 V at IF = 0.8 A and TJ = 25°C, measured under pulsed conditions (PW = 0.3 ms). This value directly affects conduction loss and thermal performance in continuous operation. At elevated junction temperatures, VF decreases slightly due to semiconductor physics, but system-level design should use the 1.3 V max for worst-case loss calculation. The RS1KL datasheet lists this in the Electrical Specifications table.
RS1KL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-219AB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 800 V
- Current - Average Rectified (Io):
- 800mA
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 800 mA
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 500 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 800 V
- Capacitance @ Vr, F:
- 10pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Sub SMA
- Operating Temperature - Junction:
- -55°C ~ 150°C
RS1KL FAQ
1.How can I place an order for RS1KL through Aetrix?
Please submit a Request for Quotation (RFQ) for RS1KL 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 RS1KL reliable?
The price and inventory of RS1KL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS1KL is usually 5 days.
3.What payment methods are accepted for RS1KL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS1KL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RS1KL?
RS1KL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RS1KL 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 RS1KL?
For technical support, including RS1KL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS1KL requirements.
6.How does Aetrix verify that RS1KL is sourced from the original manufacturer or authorized distributors?
All RS1KL 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 RS1KL meets industry standards.
7.What is the process for return or replacement of RS1KL?
All RS1KL units undergo pre-shipment inspection (PSI). If there is an issue with RS1KL, 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 RS1KL part is unused and in its original packaging.
Return procedure for RS1KL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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