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Taiwan Semiconductor Corporation RS2KAL
- Part No.:
- RS2KAL
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
RS2KAL.pdf
- Description:
- DIODE GEN PURP 800V 2A THIN SMA
- Quantity:
- Payment:
- Shipping:
Inventory:34,188
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Product details
Overview
RS2KAL from Taiwan Semiconductor is a 2 A, 800 V fast recovery surface-mount rectifier in Thin SMA package, featuring 500 ns reverse recovery time, 1.06 V forward voltage at 2 A/25°C, and 175°C maximum junction temperature-designed for high-efficiency DC-DC converters and switching inverters.
For engineers reviewing the RS2KAL datasheet, RS2KAL pinout, RS2KAL application, or RS2KAL equivalent, key selection criteria include its 800 V VRRM rating, 50 A IFSM surge capability, thermal resistance (RθJL = 16°C/W), and compatibility with automated SMT assembly on standard PCB pads.
Technical Context
The RS2KAL operates as a single-die, unidirectional silicon rectifier with glass-passivated junction for reliability under thermal cycling. Its fast recovery (trr ≤ 500 ns) enables use in high-frequency switching topologies up to several hundred kHz, while low-profile Thin SMA packaging supports dense board layouts.
Thermal performance is defined by RθJL = 16°C/W and RθJA = 73°C/W on a 5 mm × 5 mm Cu pad, enabling 2 A continuous conduction without forced cooling. Reverse leakage remains ≤1 µA at 25°C and ≤40 µA at 125°C under rated 800 V reverse bias.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - blocks up to 800 V repetitive reverse voltage, suitable for 400 V DC bus systems with safety margin |
| IF | 2 A - continuous forward current rating at TA = 75°C on standard PCB, derates linearly above |
| trr | 500 ns - enables efficient operation in 100–500 kHz SMPS designs with reduced switching loss |
| VF @ 2A/25°C | 1.06 V - contributes to <1.3 W conduction loss per device at full load, critical for thermal management |
| RθJL | 16 °C/W - allows direct heat transfer to PCB copper, supporting compact thermal design without heatsinks |
| IR @ 800V/125°C | ≤40 µA - ensures minimal leakage power in high-temp industrial environments |
| Package | Thin SMA (DO-221AC) - 4.4 × 2.6 × 1.2 mm footprint, J-STD-020 Level 1 moisture sensitivity |
Pinout & Package
Thin SMA package: 2-terminal surface-mount device with cathode indicated by band; terminals are anode (A) and cathode (K); matte tin-plated leads, solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input current entry point | Connects to higher-potential side of AC source or transformer secondary; must withstand full surge current (IFSM = 50 A) |
| Cathode | Output current exit point | Connects to output capacitor or load; polarity marking (band) prevents reverse installation in automated placement |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enhances humidity resistance and long-term stability in industrial-grade environments (MSL Level 1) |
| Fast recovery (500 ns) | Reduces reverse recovery charge (Qrr), lowering EMI and diode switching losses in high-frequency converters |
| Low profile Thin SMA | Enables ≤1.2 mm board height clearance-critical for ultra-thin power supplies and LED drivers |
| RoHS & halogen-free | Complies with IPC-1752A material declarations and EU Directive 2011/65/EU for green manufacturing |
| Junction temp limit 175°C | Supports operation in under-hood automotive auxiliary supplies and high-ambient industrial controls |
Applications
| DC-DC Converter | Switching Inverter |
|---|---|
Use Scenario: Isolated flyback or forward converter in telecom power modules delivering 12–48 V outputs. IC Role / Device Role / Timing Role: Output rectifier handling 2 A continuous current at 100–300 kHz switching frequency. Use Value: 500 ns trr minimizes switching loss and improves efficiency >92% at full load; 1.06 V VF limits conduction loss to <2.2 W. | Use Scenario: Single-phase H-bridge inverter driving 24 V DC motors in industrial automation. IC Role / Device Role / Timing Role: Freewheeling path for inductive kickback during PWM dead-time intervals. Use Value: 50 A IFSM rating safely absorbs motor back-EMF surges; 800 V VRRM covers 2× DC bus voltage transients. |
| Solar Microinverter | LED Driver |
Use Scenario: AC-side synchronous rectification stage in grid-tied microinverters converting 30–60 V PV input. IC Role / Device Role / Timing Role: High-voltage output rectifier operating near 800 V reverse stress during anti-islanding detection cycles. Use Value: 800 V VRRM provides 2× safety margin over 400 V peak AC line; 40 µA IR at 125°C maintains low standby loss. | Use Scenario: Secondary-side rectification in constant-current LED drivers for street lighting (24–48 V output). IC Role / Device Role / Timing Role: Main output rectifier conducting 2 A average current with minimal thermal rise on FR4 PCB. Use Value: RθJL = 16°C/W enables 2 A operation at ≤95°C junction temp on 5 mm² Cu pad-no heatsink required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH2R08 | Same 2 A / 800 V rating; trr = 500 ns; VF = 1.15 V @ 2 A/25°C; TO-220AC package (larger, through-hole) | Requires PCB through-hole mounting and heatsinking; unsuitable for ultra-thin or high-density SMT designs | Select when mechanical robustness or legacy through-hole compatibility outweighs size constraints |
| ES2J | Same 2 A / 600 V rating; trr = 35 ns; VF = 0.95 V @ 2 A/25°C; SMA package but lower VRRM | Not suitable for 400 V DC bus applications requiring 800 V blocking; better for 24–36 V systems | Select only if system peak reverse voltage stays ≤600 V and faster recovery is prioritized over voltage margin |
Compared with STTH2R08 and ES2J, the RS2KAL uniquely combines 800 V VRRM, 500 ns trr, and Thin SMA packaging-enabling compact, high-voltage SMT rectification where space, thermal interface, and voltage margin are jointly constrained.
Availability
RS2KAL is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and solar microinverters requiring stable component supply, consistent parametric performance, and RoHS-compliant sourcing.
Supply support for RS2KAL 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 rectifiers, TVS diodes, and MOSFETs for industrial and consumer markets.
The RS2KAL belongs to TSC's RS2xAL fast recovery rectifier family, engineered specifically for high-frequency, high-reliability SMT power conversion where thermal efficiency, voltage margin, and automated assembly compatibility are critical.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for RS2KAL?
The RS2KAL has a VRRM rating of 800 V, meaning it can reliably block up to 800 volts of reverse voltage in repetitive applications. This value is confirmed in the Absolute Maximum Ratings table of the official TSC datasheet (Version C2304), and defines the upper limit for safe operation in circuits such as 400 V DC bus systems with transient margin. Exceeding this voltage risks avalanche breakdown and permanent damage to the RS2KAL.
What is the forward voltage drop (VF) of RS2KAL at 2 A and 25°C?
The RS2KAL exhibits a typical forward voltage of 1.06 V at 2 A and 25°C, with a maximum of 1.30 V under the same conditions. This value is measured per pulse test (PW = 0.3 ms) and directly impacts conduction loss-calculating to ~2.12 W typical dissipation at full load. The RS2KAL's VF increases slightly at elevated temperatures, reaching 0.93 V at 2 A and 125°C.
Does RS2KAL have a specified reverse recovery time (trr)?
Yes, the RS2KAL has a maximum reverse recovery time (trr) of 500 ns, tested at IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This parameter is explicitly listed in the Electrical Specifications table for RS2KAL and RS2MAL variants. The 500 ns trr enables efficient operation in switching power supplies operating up to 500 kHz, reducing switching losses compared to standard recovery rectifiers.
What package type does RS2KAL use, and what are its key mechanical features?
The RS2KAL uses the Thin SMA package (JEDEC DO-221AC variant), measuring 4.4 × 2.6 × 1.2 mm. Key features include glass-passivated chip junction, matte tin-plated leads compliant with J-STD-002, cathode band polarity marking, and moisture sensitivity level (MSL) 1 per J-STD-020-making it ideal for high-volume reflow assembly without baking requirements. The RS2KAL's package outline matches TSC drawing HQ2SD07-TSMA-074 REV A.
Is RS2KAL suitable for automotive under-hood applications?
The RS2KAL supports junction temperatures up to +175°C and has a storage temperature range of −55°C to +175°C, meeting requirements for many under-hood auxiliary power applications. However, it is not AEC-Q101 qualified per the TSC documentation, and the datasheet explicitly states these devices are "not designed for use in medical, life-saving, or life-sustaining applications." For automotive-critical functions, users must perform full qualification testing; the RS2KAL may be used in non-safety-critical auxiliary systems where internal validation confirms suitability.
RS2KAL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-221AC, SMA Flat Leads
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 800 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 500 ns
- Current - Reverse Leakage @ Vr:
- 1 µA @ 800 V
- Capacitance @ Vr, F:
- 10pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Thin SMA
- Operating Temperature - Junction:
- -55°C ~ 150°C
RS2KAL FAQ
1.How can I place an order for RS2KAL through Aetrix?
Please submit a Request for Quotation (RFQ) for RS2KAL 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 RS2KAL reliable?
The price and inventory of RS2KAL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS2KAL is usually 5 days.
3.What payment methods are accepted for RS2KAL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS2KAL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RS2KAL?
RS2KAL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RS2KAL 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 RS2KAL?
For technical support, including RS2KAL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS2KAL requirements.
6.How does Aetrix verify that RS2KAL is sourced from the original manufacturer or authorized distributors?
All RS2KAL 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 RS2KAL meets industry standards.
7.What is the process for return or replacement of RS2KAL?
All RS2KAL units undergo pre-shipment inspection (PSI). If there is an issue with RS2KAL, 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 RS2KAL part is unused and in its original packaging.
Return procedure for RS2KAL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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