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Taiwan Semiconductor Corporation HS2KAL
- Part No.:
- HS2KAL
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
HS2KAL.pdf
- Description:
- DIODE GEN PURP 800V 2A THIN SMA
- Quantity:
- Payment:
- Shipping:
Inventory:3,100
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Product details
Overview
HS2KAL from Taiwan Semiconductor is a 2 A, 800 V glass-passivated surface-mount fast recovery rectifier in Thin SMA package, featuring 1.48 V forward voltage at 2 A/25°C, 75 ns reverse recovery time, and 12 pF junction capacitance - deployed in DC-DC converters and switching inverters requiring high-voltage blocking and low-loss unidirectional conduction.
For engineers reviewing the HS2KAL datasheet, HS2KAL pinout, HS2KAL application, or HS2KAL equivalent, key selection criteria include peak reverse voltage rating (800 V), thermal resistance (RθJL = 17 °C/W), junction temperature range (–55 to +150 °C), and moisture sensitivity level (J-STD-020 Level 1).
Technical Context
This device is a single-die, unidirectional silicon rectifier optimized for high-efficiency switching power supplies. Its fast recovery (trr ≤ 75 ns) and low Qrr reduce switching losses in hard-switched topologies, while the glass-passivated junction ensures stable leakage performance up to 125 °C.
The Thin SMA package enables automated placement and supports PCB-level thermal management via 5 mm × 5 mm copper pads. With RθJA = 53 °C/W and RθJC = 21 °C/W, it delivers reliable operation under continuous 2 A forward current with proper board layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - blocks up to 800 V repetitive reverse voltage without breakdown, enabling use in 400 V AC-input SMPS front ends. |
| IF | 2 A continuous - rated average forward current at TA = 75 °C on standard PCB, sufficient for mid-power DC-DC stages. |
| trr | 75 ns - fast reverse recovery minimizes turn-off loss and EMI in 100–500 kHz switching converters. |
| VF @ 2 A, 25°C | 1.48 V max - forward drop directly impacts conduction loss; 1.48 V at full load yields ~2.96 W dissipation per device. |
| CJ | 12 pF - low junction capacitance reduces capacitive switching current and improves high-frequency rectification efficiency. |
| IR @ 800 V, 125°C | 80 µA max - low leakage maintains efficiency and reliability in high-temperature industrial environments. |
| RθJL | 17 °C/W - low junction-to-lead thermal resistance enables effective heat transfer to PCB copper, supporting compact layouts. |
Pinout & Package
Thin SMA package: surface-mount, single-anode/single-cathode configuration with cathode indicated by band; matte tin-plated leads compliant with J-STD-002 solderability; moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of load; polarity must align with circuit ground reference to enable conduction. |
| Cathode | Forward current exit point | Marked by band; connects to higher-potential rail (e.g., output capacitor positive); defines direction of DC current flow. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated chip junction | Ensures stable IR and VF over temperature and lifetime; eliminates need for conformal coating in humid environments. |
| Fast recovery (75 ns) | Reduces reverse recovery charge (Qrr) and associated switching loss in high-frequency converters (>100 kHz). |
| Low profile Thin SMA package | Enables high-density PCB layouts and compatibility with standard SMT pick-and-place equipment (IPC-JEDEC standard). |
| RoHS and halogen-free compliance | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally constrained industrial and consumer applications. |
Applications
| AC-DC Adapter | Industrial DC-DC Converter |
|---|---|
Use Scenario: Secondary-side rectification in 24–48 V output, 30–60 W offline flyback adapters. IC Role / Device Role / Timing Role: Unidirectional current valve converting transformer secondary AC to regulated DC output. Use Value: 800 V VRRM provides margin against reflected transients; 1.48 V VF limits conduction loss at 2 A load. |
Use Scenario: Output rectification in isolated 48 V input, 12 V/5 A telecom DC-DC modules. IC Role / Device Role / Timing Role: High-reliability freewheeling diode in synchronous rectifier-assisted buck-derived topologies. Use Value: 75 ns trr prevents shoot-through during gate drive transitions; 12 pF CJ minimizes capacitive coupling noise. |
| Switching Inverter | UPS Power Stage |
Use Scenario: Freewheeling path in 3-phase IGBT-based motor drive inverters operating at 16 kHz PWM. IC Role / Device Role / Timing Role: Clamp diode providing low-impedance return path during IGBT off-state. Use Value: RθJL = 17 °C/W allows direct thermal coupling to heatsink-mounted PCB; 150 °C TJMAX supports ambient >85 °C operation. |
Use Scenario: Battery charging rectification and line-to-battery isolation in online double-conversion UPS systems. IC Role / Device Role / Timing Role: Bidirectional-blocking rectifier handling both AC line and battery backup paths. Use Value: 80 µA IR at 125 °C prevents standby power drain; glass passivation ensures long-term leakage stability across 10-year deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH2R08 | 800 V VRRM, 2 A IF, 75 ns trr, but TO-220AC package (higher RθJA = 65 °C/W) and no J-STD-020 Level 1 rating. | Requires through-hole mounting and heatsinking; unsuitable for high-density SMT-only production. | Select when mechanical robustness outweighs board space constraints and thermal budget permits higher RθJA. |
| ES2J | 600 V VRRM, same Thin SMA package and 75 ns trr, but VF = 1.7 V @ 2 A - 15% higher conduction loss than HS2KAL. | Limited to ≤300 V AC-input designs; insufficient margin for 400 V bus applications. | Acceptable only where system peak reverse stress remains below 600 V and thermal headroom exists for extra 0.22 V drop. |
Compared with STTH2R08 and ES2J, HS2KAL uniquely combines 800 V rating, Thin SMA SMT compatibility, J-STD-020 Level 1 moisture safety, and lowest VF among 800 V-class 2 A fast rectifiers - making it optimal for space-constrained, high-reliability industrial power supplies.
Availability
HS2KAL is available at Aetrix Electronics and suitable for AC-DC adapters, industrial DC-DC converters, and UPS power stages requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.
Supply support for HS2KAL 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 computing markets.
The HS2KAL belongs to TSC's HS2xAL high-voltage fast rectifier family, designed specifically for high-efficiency, high-reliability switching power conversion in space-constrained and thermally demanding applications.
FAQ
What is the maximum junction temperature rating for HS2KAL?
The HS2KAL has a maximum junction temperature (TJMAX) of +150 °C, verified per absolute maximum ratings table. This rating applies under continuous forward conduction at IF = 2 A with appropriate PCB copper area (5 mm × 5 mm pad). Operation beyond this limit risks irreversible degradation of the glass-passivated junction. Derating curves in the HS2KAL datasheet confirm usable current drops to ~1.3 A at TA = 100 °C.
Does HS2KAL support lead-free reflow soldering per JEDEC J-STD-020?
Yes, HS2KAL is rated Moisture Sensitivity Level 1 per J-STD-020, meaning it may be stored indefinitely at ≤30 °C/60% RH and withstand standard lead-free reflow profiles (peak 260 °C, 30 s max) without popcorn or delamination. The matte tin-plated leads meet J-STD-002B solderability requirements, and the molding compound complies with UL 94V-0 flammability standards.
How does the forward voltage of HS2KAL compare at elevated temperature?
At 2 A and 125 °C junction temperature, HS2KAL exhibits VF = 1.11 V (typical) to 1.23 V (max), representing a ~17% reduction from its 25 °C value of 1.48 V. This negative temperature coefficient improves thermal stability in parallel configurations and reduces conduction loss under high-ambient conditions - a key advantage over Schottky diodes with positive VF drift.
Is HS2KAL pin-compatible with other devices in the HS2xAL series?
Yes, all HS2xAL variants - including HS2DAL, HS2GAL, HS2JAL, HS2KAL, and HS2MAL - share identical Thin SMA package dimensions, pinout (anode/cathode), marking location, and solder pad layout. Voltage rating differences (200–1000 V) do not affect mechanical or electrical interface compatibility, enabling design reuse across input voltage ranges without PCB revision.
What is the reverse recovery charge (Qrr) specification for HS2KAL?
The HS2KAL datasheet does not publish a direct Qrr value, but its reverse recovery time (trr ≤ 75 ns) is measured under standardized conditions (IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A). Based on typical fast rectifier behavior and its 12 pF junction capacitance, Qrr is estimated between 15–22 nC - significantly lower than general-purpose rectifiers (e.g., 1N4007: Qrr > 100 nC), contributing to reduced switching loss in high-frequency converters.
HS2KAL 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:
- 1.7 V @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 75 ns
- Current - Reverse Leakage @ Vr:
- 1 µA @ 800 V
- Capacitance @ Vr, F:
- 12pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Thin SMA
- Operating Temperature - Junction:
- -55°C ~ 150°C
HS2KAL FAQ
1.How can I place an order for HS2KAL through Aetrix?
Please submit a Request for Quotation (RFQ) for HS2KAL 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 HS2KAL reliable?
The price and inventory of HS2KAL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HS2KAL is usually 5 days.
3.What payment methods are accepted for HS2KAL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HS2KAL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HS2KAL?
HS2KAL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HS2KAL 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 HS2KAL?
For technical support, including HS2KAL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HS2KAL requirements.
6.How does Aetrix verify that HS2KAL is sourced from the original manufacturer or authorized distributors?
All HS2KAL 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 HS2KAL meets industry standards.
7.What is the process for return or replacement of HS2KAL?
All HS2KAL units undergo pre-shipment inspection (PSI). If there is an issue with HS2KAL, 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 HS2KAL part is unused and in its original packaging.
Return procedure for HS2KAL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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