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Taiwan Semiconductor Corporation HS1KL
- Part No.:
- HS1KL
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-123
- Datasheet:
-
HS1KL.pdf
- Description:
- 75NS, 1A, 800V, HIGH EFFICIENT R
- Quantity:
- Payment:
- Shipping:
Inventory:8,962
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Product details
Overview
HS1KL from Taiwan Semiconductor is a 1A, 800V high-efficiency surface-mount silicon rectifier diode in Sub SMA package, featuring 1.70V max forward voltage at 1A/25°C, 75ns reverse recovery time, and 15pF junction capacitance - deployed in DC-DC converters and freewheeling paths where fast switching and thermal robustness are required.
For engineers reviewing the HS1KL datasheet, HS1KL pinout, HS1KL application, or HS1KL equivalent, key selection criteria include its 800V repetitive peak reverse voltage, 30A surge rating, JESD201 Class 1A whisker resistance, moisture sensitivity level 1 compliance, and Sub SMA low-profile footprint for automated SMT assembly.
Technical Context
The HS1KL is a single-die, glass-passivated PN-junction rectifier optimized for high-frequency switching applications. Its 75ns reverse recovery time and 15pF junction capacitance support operation in SMPS topologies up to several hundred kHz, while its 100°C/W junction-to-ambient thermal resistance requires careful PCB copper area design for 1A continuous conduction.
Rated for -55°C to +150°C junction temperature, the device uses matte tin-plated leads compliant with J-STD-002 solderability and UL 94V-0 molding compound. Polarity is marked by a cathode band; no internal guard ring or soft-recovery enhancement is specified.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - maximum repetitive reverse blocking voltage; defines safe operating range in flyback/freewheeling clamping circuits |
| IF | 1 A - average forward current rating at TA = 25°C; derates linearly above 25°C per Fig.1 curve |
| VF (max) | 1.70 V @ 1A, 25°C - directly impacts conduction loss and thermal rise in high-duty-cycle converters |
| trr | 75 ns - determines switching loss contribution and EMI generation during turn-off transitions |
| CJ | 15 pF @ 1MHz, VR = 4V - affects high-frequency noise coupling and snubber design in resonant topologies |
| IFSM | 30 A - non-repetitive surge capability for startup/inrush protection without bond wire fusing |
| RθJA | 100 °C/W - requires ≥25 mm² of 1oz copper pad for safe 1A operation at 70°C ambient |
Pinout & Package
Package: Sub SMA - low-profile surface-mount package with gull-wing leads, 0.019g mass, UL 94V-0 molded compound, and cathode polarity 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); must withstand full IF and IFSM |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; ties to output rail or ground return; sustains full VRRM during off-state |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable leakage performance and long-term reliability under humid conditions without hermetic sealing |
| Moisture sensitivity level 1 | Eliminates bake requirement prior to reflow; supports standard J-STD-020 handling and storage |
| JESD201 Class 1A whisker resistance | Prevents tin whisker growth under thermal cycling, critical for automotive and industrial field life |
| Halogen-free per IEC 61249-2-21 | Meets RoHS and environmental compliance mandates for end-of-life recycling and combustion safety |
| Low profile Sub SMA footprint | Reduces board height in space-constrained power modules and enables high-density automated placement |
Applications
| DC-DC Converter Output Rectification | Switching Inverter Freewheeling Diode |
|---|---|
Use Scenario: Secondary-side rectification in isolated 48V–12V buck-derived DC-DC converters operating at 200–500kHz. IC Role / Device Role / Timing Role: Unidirectional current steering during synchronous rectifier dead-time; blocks reverse voltage during high-side switch conduction. Use Value: 75ns trr minimizes reverse recovery charge loss; 1.70V VF limits conduction loss at 1A load, improving efficiency over slower 1N400x alternatives. | Use Scenario: Freewheeling path across inductive loads in 3-phase motor inverters and UPS H-bridge outputs. IC Role / Device Role / Timing Role: Provides low-loss current recirculation path when PWM switches turn off; clamps inductive kickback within VRRM limit. Use Value: 800V VRRM safely handles reflected transients in 400V bus systems; 30A IFSM absorbs motor startup surges without failure. |
| AC-DC Adapter Secondary Rectifier | Industrial Power Supply Snubber Clamp |
Use Scenario: Output rectification in compact 12V/1A wall adapters using flyback topology with 65kHz–100kHz switching. IC Role / Device Role / Timing Role: Converts transformer secondary AC to regulated DC; conducts only during positive half-cycles. Use Value: Sub SMA package fits tight PCB layouts; 15pF CJ reduces high-frequency ringing and EMI filter burden vs. higher-capacitance diodes. | Use Scenario: RC snubber clamp across MOSFETs or IGBTs in industrial 24V–48V DC bus supplies. IC Role / Device Role / Timing Role: Absorbs turn-off energy spikes and suppresses voltage overshoot during switching transitions. Use Value: Fast 75ns trr ensures rapid turn-on during transient events; 100°C/W RθJA allows direct mounting on heatsink pads for sustained pulse handling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R08 | Same 1A/800V rating; 1.85V VF max @ 1A, 25°C; 50ns trr; DO-214AC package | Higher VF increases conduction loss; faster trr reduces switching loss but raises EMI risk | Preferred where ultra-fast recovery outweighs VF penalty; requires layout review for EMI mitigation |
| ON Semi MUR108 | 1A/800V; 1.75V VF max; 75ns trr; same Sub SMA package; halogen-free not specified | Identical electrical timing and thermal specs; differs in RoHS/halogen compliance documentation | Drop-in replacement if halogen-free certification is not mandated; verify JESD201 whisker test status |
Compared with STTH1R08 and MUR108, the HS1KL offers identical trr and superior halogen-free compliance, but slightly lower VF than STTH1R08 and tighter environmental certification than MUR108 - making it optimal for cost-sensitive, high-volume industrial power supplies requiring full regulatory alignment.
Availability
HS1KL is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and freewheeling applications requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.
Supply support for HS1KL 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 power, automotive, and industrial markets since 1979.
The HS1KL belongs to TSC's HS1xL high-efficiency rectifier family, engineered specifically for high-frequency switching power supplies where low VF, fast trr, and robust thermal performance are prioritized over ultra-low-cost legacy designs.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for HS1KL?
The HS1KL has a VRRM rating of 800 V, meaning it can reliably block up to 800 volts of reverse voltage in repetitive applications such as DC-DC converter output stages or inverter freewheeling paths. This value is confirmed in the Absolute Maximum Ratings table on page 1 of the official Taiwan Semiconductor datasheet revision C2103. Exceeding this voltage risks avalanche breakdown and permanent damage to the HS1KL.
What is the forward voltage drop (VF) specification for HS1KL at rated current?
The HS1KL exhibits a maximum forward voltage of 1.70 V at 1 A forward current and 25°C junction temperature, as specified in the Electrical Specifications table. This VF value directly determines conduction losses - for example, at 1 A, the HS1KL dissipates up to 1.70 W continuously under worst-case thermal conditions. The actual VF decreases at lower currents and increases with rising junction temperature.
Does HS1KL have a defined reverse recovery time (trr), and how is it measured?
Yes, the HS1KL has a maximum 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 reflects the time required for the diode to transition from conduction to full blocking state, directly influencing switching losses and EMI in high-frequency power circuits using the HS1KL.
What package type does HS1KL use, and what are its mechanical highlights?
The HS1KL uses the Sub SMA package - a low-profile surface-mount variant of SMA with gull-wing leads, 0.019g mass, and UL 94V-0 flammability-rated epoxy molding compound. Its cathode is marked by a visible band, terminals are matte tin-plated per J-STD-002, and it meets JESD201 Class 1A whisker resistance - all critical for reliable automated assembly and long-term field operation of the HS1KL.
Is HS1KL compliant with RoHS and halogen-free standards?
Yes, the HS1KL is RoHS compliant and halogen-free per IEC 61249-2-21, as explicitly stated in the FEATURES section of the Taiwan Semiconductor datasheet. This dual compliance ensures suitability for environmentally regulated markets including EU, Japan, and China, and supports safer end-of-life recycling - a verified attribute of the HS1KL, not inferred from family-level claims.
HS1KL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- 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:
- 15pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Sub SMA
- Operating Temperature - Junction:
- -55°C ~ 150°C
HS1KL FAQ
1.How can I place an order for HS1KL through Aetrix?
Please submit a Request for Quotation (RFQ) for HS1KL 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 HS1KL reliable?
The price and inventory of HS1KL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HS1KL is usually 5 days.
3.What payment methods are accepted for HS1KL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HS1KL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HS1KL?
HS1KL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HS1KL 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 HS1KL?
For technical support, including HS1KL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HS1KL requirements.
6.How does Aetrix verify that HS1KL is sourced from the original manufacturer or authorized distributors?
All HS1KL 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 HS1KL meets industry standards.
7.What is the process for return or replacement of HS1KL?
All HS1KL units undergo pre-shipment inspection (PSI). If there is an issue with HS1KL, 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 HS1KL part is unused and in its original packaging.
Return procedure for HS1KL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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