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Taiwan Semiconductor Corporation HS2KA
- Part No.:
- HS2KA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
HS2KA.pdf
- Description:
- DIODE GEN PURP 800V 1.5A DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:12,965
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Product details
Overview
HS2KA from Taiwan Semiconductor is a 1.5A, 800V repetitive peak reverse voltage (VRRM) surface-mount fast recovery rectifier in DO-214AC (SMA) package, featuring 75 ns reverse recovery time (trr), 1.7 V forward voltage at 1.5 A, and 30 pF junction capacitance at 1 MHz/4 V - used in snubber networks and freewheeling paths of switching-mode power supplies.
For engineers reviewing the HS2KA datasheet, HS2KA pinout, HS2KA application, or HS2KA equivalent, key selection criteria include its 800 V VRRM, 75 ns trr, 1.7 V VF @ 1.5 A, DO-214AC thermal resistance (RθJA = 80 °C/W), and suitability for high-frequency DC-DC converters requiring low stored charge and fast turn-off.
Technical Context
The HS2KA employs a single-die, glass-passivated PN junction optimized for fast recovery with controlled minority carrier lifetime. Its 75 ns trr and 30 pF CJ enable operation up to several hundred kHz in hard-switched topologies.
Rated for 1.5 A average forward current and 50 A non-repetitive surge (8.3 ms half-sine), it operates across –55 °C to +150 °C junction temperature range and meets JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - supports input rectification or clamp circuits in 400–600 V DC bus systems |
| trr | 75 ns - enables efficient operation in 100–500 kHz switching converters with low switching loss |
| VF @ 1.5 A | 1.7 V - contributes ~2.55 W conduction loss at full rated current, requiring thermal management |
| CJ @ 1 MHz | 30 pF - minimizes capacitive coupling noise in high-dv/dt snubber and freewheeling applications |
| RθJA | 80 °C/W - requires ≥25 mm² copper pour on PCB for safe 1.5 A continuous operation at 70 °C ambient |
| IFSM | 50 A - withstands typical inrush and transient overcurrents in SMPS startup and fault conditions |
Pinout & Package
Package: DO-214AC (SMA), molded epoxy case meeting UL 94V-0, matte tin-plated leads, cathode indicated by band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck freewheel path) |
| Cathode | Forward current exit / reverse blocking terminal | Marked with band; ties to higher-potential rail (e.g., output capacitor positive) |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enhances long-term reliability under humidity and thermal cycling vs. epoxy-passivated alternatives |
| Fast recovery (75 ns) | Reduces reverse recovery charge (Qrr) and associated switching losses in hard-switched converters |
| DO-214AC low-profile package | Enables automated SMT placement and supports ≤1.0 mm board height constraints |
| J-STD-020 Level 1 MSL | Allows unlimited floor life without dry pack or baking prior to reflow soldering |
Applications
| DC–DC Converter Output Rectification | Snubber Network Clamp Diode |
|---|---|
Use Scenario: Secondary-side synchronous rectification replacement in isolated flyback or forward converters operating at 100–300 kHz. IC Role / Device Role / Timing Role: Freewheeling diode providing unidirectional current path during MOSFET off-time; timing-critical for minimizing voltage overshoot. Use Value: 75 ns trr and 30 pF CJ limit ringback and EMI generation during turn-off, improving output regulation stability. | Use Scenario: RCD snubber across primary-side MOSFET or transformer winding in offline SMPS. IC Role / Device Role / Timing Role: Clamp diode conducting reverse recovery current during MOSFET turn-on; must recover before next switching cycle. Use Value: Controlled 75 ns trr ensures reliable clamping without excessive voltage spike or diode self-heating. |
| Lighting Ballast Freewheeling | Industrial Inverter Auxiliary Rectification |
Use Scenario: Freewheel path in magnetic or electronic ballasts driving HID or fluorescent lamps. IC Role / Device Role / Timing Role: Provides current continuity during AC zero-crossings and handles inductive kickback from choke windings. Use Value: 800 V VRRM withstands lamp ignition transients up to 700 V peak, ensuring robust lamp start-up. | Use Scenario: Auxiliary DC bus supply rectification in motor drive gate driver or control logic power rails. IC Role / Device Role / Timing Role: Input rectifier converting 24–48 V AC auxiliary winding output to stable DC for isolated bias supplies. Use Value: 1.5 A rating and 80 °C/W RθJA support continuous 1.2 A load with <15 °C rise on standard 2-layer PCB. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1L08 | Same 800 V VRRM, but 50 ns trr and 1.25 V VF; DO-204AL (DO-41) through-hole package | Requires PCB through-hole mounting; better for prototyping or low-volume legacy designs | Choose when lower VF and faster trr outweigh SMT compatibility needs |
| ES1J | Same DO-214AC package and 600 V VRRM, but 35 ns trr and 1.7 V VF; lower voltage rating | Not suitable for 800 V bus applications; limited to ≤420 V DC link use | Acceptable only if system max reverse voltage stays below 600 V and faster recovery is prioritized |
Compared with STTH1L08 and ES1J, the HS2KA offers optimal balance of SMT compatibility, 800 V rating, and thermally robust DO-214AC packaging - making it preferred for volume-manufactured industrial and lighting power supplies where layout density and assembly automation are critical.
Availability
HS2KA is available at Aetrix Electronics and suitable for DC–DC converters, snubber networks, lighting ballasts, and industrial inverters requiring stable component supply and consistent parametric performance across production lots.
Supply support for HS2KA 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 HS2x series was designed specifically for high-efficiency, high-reliability surface-mount rectification in switching power supplies - emphasizing fast recovery, tight parameter distribution, and automotive-grade process consistency.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for HS2KA?
The HS2KA has a maximum repetitive peak reverse voltage (VRRM) of 800 V, as specified in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version J2102). This rating defines the highest reverse voltage the device can block repeatedly without breakdown under normal operating conditions and is validated across the full –55 °C to +150 °C junction temperature range. The HS2KA is therefore suited for use in 400 V AC input-derived DC buses and other 800 V-class clamp or freewheeling applications.
What is the forward voltage (VF) of HS2KA at 1.5 A and 25 °C?
The forward voltage (VF) of HS2KA is 1.7 V at 1.5 A forward current and 25 °C junction temperature, per the Electrical Specifications table. This value is measured under pulsed conditions (PW = 0.3 ms) to avoid self-heating effects. At elevated temperatures (e.g., 125 °C), VF decreases slightly due to semiconductor physics, but system-level thermal design must still account for ~2.55 W conduction loss at full rated current.
Does HS2KA have a defined reverse recovery time (trr)?
Yes, HS2KA has a specified reverse recovery time (trr) of 75 ns, measured under conditions of IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A, per the Electrical Specifications table. This parameter is critical for minimizing switching losses and voltage overshoot in high-frequency DC–DC converters and snubber circuits. The 75 ns trr reflects its fast recovery design, distinguishing it from standard recovery rectifiers that typically exceed 500 ns.
What package type does HS2KA use, and what are its key mechanical attributes?
HS2KA uses the DO-214AC (SMA) surface-mount package. Key mechanical attributes include UL 94V-0 compliant molding compound, matte tin-plated leads compliant with J-STD-002 solderability, JESD201 Class 2 whisker resistance, and polarity indicated by a visible cathode band. Its low profile supports compact board layouts, and its 0.060 g weight facilitates high-speed pick-and-place assembly without misalignment risk.
Is HS2KA RoHS and halogen-free compliant?
Yes, HS2KA is RoHS compliant and halogen-free in accordance with IEC 61249-2-21, as explicitly stated in the FEATURES section of the Taiwan Semiconductor datasheet. These compliance statements apply to the full HS2AA–HS2MA family, including HS2KA, and are verified through material declarations and third-party testing. No lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE substances exceed RoHS thresholds, and total bromine/chlorine content remains below 900 ppm.
HS2KA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 800 V
- Current - Average Rectified (Io):
- 1.5A
- Voltage - Forward (Vf) (Max) @ If:
- 1.7 V @ 1.5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 75 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 800 V
- Capacitance @ Vr, F:
- 30pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
- Operating Temperature - Junction:
- -55°C ~ 150°C
HS2KA FAQ
1.How can I place an order for HS2KA through Aetrix?
Please submit a Request for Quotation (RFQ) for HS2KA 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 HS2KA reliable?
The price and inventory of HS2KA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HS2KA is usually 5 days.
3.What payment methods are accepted for HS2KA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HS2KA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HS2KA?
HS2KA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HS2KA 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 HS2KA?
For technical support, including HS2KA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HS2KA requirements.
6.How does Aetrix verify that HS2KA is sourced from the original manufacturer or authorized distributors?
All HS2KA 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 HS2KA meets industry standards.
7.What is the process for return or replacement of HS2KA?
All HS2KA units undergo pre-shipment inspection (PSI). If there is an issue with HS2KA, 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 HS2KA part is unused and in its original packaging.
Return procedure for HS2KA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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