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Taiwan Semiconductor Corporation HS1K-K
- Part No.:
- HS1K-K
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
HS1K-K.pdf
- Description:
- 75NS, 1A, 800V, HIGH EFFICIENT R
- Quantity:
- Payment:
- Shipping:
Inventory:6,050
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Product details
Overview
HS1K-K from Taiwan Semiconductor is a 1A, 800V repetitive peak reverse voltage surface-mount silicon rectifier diode in DO-214AC (SMA) package, featuring 1.7V max forward voltage at 1A and 75ns reverse recovery time, used for freewheeling and switching-mode DC/DC converter output stages.
For engineers reviewing the HS1K-K datasheet, HS1K-K pinout, HS1K-K application, or HS1K-K equivalent, key selection criteria include VRRM = 800V, IF = 1A, trr = 75ns, VF ≤ 1.7V at 1A, and DO-214AC thermal resistance RθJA = 70°C/W under standard PCB mounting conditions.
Technical Context
This is a single-die, glass-passivated, planar junction silicon rectifier optimized for high-efficiency switching power supplies. Its 800V VRRM rating and 75ns trr support operation in 48V–400V output DC/DC converters with minimal switching loss.
The device uses a low-leakage structure with IR ≤ 5µA at 25°C and TJ = 100°C, enabling stable performance in thermally constrained environments. Its DO-214AC package provides JEDEC-compliant solderability and meets JESD201 Class 1A whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - supports input/output isolation up to 800V peak reverse stress in flyback or buck-boost topologies |
| IF | 1 A continuous - rated for steady-state conduction in low-power SMPS outputs and auxiliary rails |
| trr | 75 ns - enables efficient operation at 100–500 kHz switching frequencies with reduced turn-off loss |
| VF | ≤1.7 V at 1A, 25°C - limits conduction loss to ≤1.7W per diode in 1A continuous paths |
| RθJA | 70 °C/W - requires ≥100 mm² copper pad for safe 1A operation at TA = 70°C ambient |
| IR | ≤5 µA at 25°C - ensures minimal leakage current in high-impedance hold-up or sensing circuits |
Pinout & Package
DO-214AC (SMA) surface-mount package with cathode-indicated band; matte tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 1A 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 buck, transformer secondary in flyback) |
| Cathode | Current exit point during forward conduction; marked by band | Connected to higher-potential output rail or filter capacitor positive terminal |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable long-term reliability under humidity and thermal cycling per J-STD-020 Level 1 |
| Fast recovery (75 ns) | Reduces reverse recovery charge (Qrr) to <15 nC, minimizing EMI and switching loss in 200–500 kHz designs |
| Low VF (≤1.7 V) | Lowers conduction loss by ~15% vs. comparable 1000V diodes, improving efficiency in 12–48V output converters |
| Halogen-free compound | Meets IEC 61249-2-21, supporting RoHS-compliant and environmentally regulated industrial end equipment |
Applications
| DC/DC Converter Output Rectification | Switching Mode Inverter Freewheeling |
|---|---|
Use Scenario: Secondary-side rectification in isolated 24V/1A flyback power supply for industrial PLC I/O modules. IC Role / Device Role / Timing Role: Unidirectional current steering diode providing output polarity control and energy transfer timing synchronized to primary-side MOSFET switching. Use Value: 800V VRRM withstands reflected primary transients; 75ns trr minimizes cross-conduction loss during synchronous rectifier dead-time gaps. | Use Scenario: Freewheeling path for inductive load current in 48V H-bridge motor driver stage. IC Role / Device Role / Timing Role: Passive clamp diode conducting during MOSFET off-state to recirculate inductive energy back to supply rail. Use Value: 1.7V VF limits clamp dissipation to <1.7W; DO-214AC footprint allows direct replacement of legacy SMA rectifiers without layout change. |
| AC-DC Adapter Secondary Side | Telecom Power Supply Hold-Up |
Use Scenario: Output rectification in 12V/0.8A universal-input AC-DC adapter for network edge devices. IC Role / Device Role / Timing Role: High-voltage output rectifier handling 12V DC output with 800V reverse margin against line surge events. Use Value: 5µA IR at 25°C prevents standby current leakage; glass passivation ensures >10-year field life under 40°C ambient. | Use Scenario: Backup rectification path in 48V telecom shelf power system during main converter fault. IC Role / Device Role / Timing Role: Standby rectifier held reverse-biased until main supply fails, then conducts hold-up capacitor discharge current. Use Value: 150µA IR at 125°C ensures <1mA total leakage across 10 parallel devices, preserving hold-up time within spec. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R08 | VRRM = 800V, trr = 75ns, VF = 1.7V - identical electrical specs; DO-214AC package with same pinout | Qualified to AEC-Q101; suitable for automotive-grade designs where HS1K-K is not qualified | Select STTH1R08 when automotive qualification or extended temperature validation is required |
| SB180 | VRRM = 800V, IF = 1A, but trr = 100ns and VF = 1.85V - slower recovery and higher conduction loss | Lower cost; acceptable in <100 kHz designs where EMI and efficiency margins permit higher Qrr | Choose SB180 only for cost-sensitive, low-frequency (<100 kHz) applications where 15ns trr penalty and +0.15V VF are tolerable |
Compared with STTH1R08 and SB180, the HS1K-K delivers identical 800V/1A/75ns performance at industrial-grade reliability and halogen-free compliance, making it optimal for commercial and industrial SMPS where automotive qualification is unnecessary and cost sensitivity is moderate.
Availability
HS1K-K is available at Aetrix Electronics and suitable for DC/DC converters, switching-mode inverters, and freewheeling applications requiring stable component supply across industrial automation, telecom power systems, and embedded power modules.
Supply support for HS1K-K 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 HS1K-K belongs to TSC's HS1x-K high-efficiency rectifier family, designed specifically for high-frequency switching power supplies where low VF, fast trr, and robust thermal performance are critical in compact DO-214AC layouts.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) rating for HS1K-K?
The HS1K-K has a VRRM rating of 800 V, verified per Taiwan Semiconductor's F2111 datasheet revision. This value defines the maximum instantaneous reverse voltage the diode can block repeatedly without breakdown. It is critical for selecting appropriate derating margins in flyback transformers and snubber networks. The HS1K-K must not be operated beyond this rating under any condition, including transient surges.
What is the forward voltage drop (VF) of HS1K-K at 1A and 25°C?
The HS1K-K exhibits a maximum forward voltage drop of 1.7 V at IF = 1 A and TJ = 25°C, as specified in the Electrical Specifications table. This parameter directly impacts conduction loss and thermal design - at full load, it results in ≤1.7 W dissipation. The actual VF decreases slightly at elevated junction temperatures, but design should use the 1.7 V max value for worst-case thermal analysis.
Does HS1K-K have a defined reverse recovery time (trr), and what is its value?
Yes, the HS1K-K has a specified reverse recovery time of 75 ns under test conditions of IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This value is confirmed in the Electrical Specifications section of the F2111 datasheet. The 75 ns trr enables reliable operation in switching power supplies operating up to 500 kHz, reducing switching losses and EMI generation compared to slower rectifiers.
What package type does HS1K-K use, and is it compatible with automated assembly?
The HS1K-K uses the DO-214AC (SMA) surface-mount package, with matte tin-plated leads compliant with J-STD-002 solderability standards. It is explicitly designed for automated placement per the "Ideal for automated placement" feature statement. The package meets moisture sensitivity level 1 (J-STD-020), eliminating bake requirements prior to reflow, and supports standard SMA pick-and-place nozzle tooling and stencil-defined solder paste volumes.
Is HS1K-K RoHS and halogen-free compliant?
Yes, the HS1K-K is RoHS compliant and halogen-free per IEC 61249-2-21, as stated in the FEATURES section of the F2111 datasheet. The molding compound is UL 94V-0 rated, and all materials meet EU Directive 2011/65/EU and JEDEC JS709C requirements. This compliance applies to both the die and package construction, ensuring suitability for environmentally regulated industrial and telecom end equipment.
HS1K-K 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):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.7 V @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 75 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 800 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
- Operating Temperature - Junction:
- -55°C ~ 150°C
HS1K-K FAQ
1.How can I place an order for HS1K-K through Aetrix?
Please submit a Request for Quotation (RFQ) for HS1K-K 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 HS1K-K reliable?
The price and inventory of HS1K-K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HS1K-K is usually 5 days.
3.What payment methods are accepted for HS1K-K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HS1K-K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HS1K-K?
HS1K-K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HS1K-K 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 HS1K-K?
For technical support, including HS1K-K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HS1K-K requirements.
6.How does Aetrix verify that HS1K-K is sourced from the original manufacturer or authorized distributors?
All HS1K-K 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 HS1K-K meets industry standards.
7.What is the process for return or replacement of HS1K-K?
All HS1K-K units undergo pre-shipment inspection (PSI). If there is an issue with HS1K-K, 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 HS1K-K part is unused and in its original packaging.
Return procedure for HS1K-K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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