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Taiwan Semiconductor Corporation HS1KLW
- Part No.:
- HS1KLW
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-123W
- Datasheet:
-
HS1KLW.pdf
- Description:
- 75NS, 1A, 800V, HIGH EFFICIENT R
- Quantity:
- Payment:
- Shipping:
Inventory:4,496
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Product details
Overview
HS1KLW from Taiwan Semiconductor is a 1 A, 800 V repetitive peak reverse voltage surface-mount silicon rectifier diode in SOD-123W package, featuring 1.7 V max forward voltage at 1 A and 75 ns reverse recovery time, used in DC-DC converters and switching-mode inverters.
For engineers reviewing the HS1KLW datasheet, HS1KLW pinout, HS1KLW application, or HS1KLW equivalent, key selection criteria include its 800 V VRRM, 30 A IFSM, 175 °C maximum junction temperature, low-profile SOD-123W package, and 7 pF junction capacitance at 1 MHz and 4.0 V reverse bias.
Technical Context
The HS1KLW is a single-die, glass-passivated, standard recovery rectifier optimized for high-efficiency switching power supplies. Its 800 V VRRM rating and 75 ns trr support operation in medium-voltage flyback and forward converter topologies where fast but cost-effective recovery is required.
Thermally, it delivers RθJL = 25 °C/W and RθJA = 80 °C/W, enabling 1 A continuous conduction in compact PCB layouts. The SOD-123W package features matte tin-plated leads compliant with J-STD-002 and JESD 201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - supports input rectification up to 560 VRMS in offline SMPS designs |
| IF | 1 A continuous - suitable for low-to-medium power DC-DC stages (e.g., 12–24 W output) |
| VF max | 1.7 V @ 1 A, 25°C - limits conduction loss to ≤1.7 W per device at full load |
| trr | 75 ns - enables stable operation in 100–500 kHz switching converters without excessive ringing |
| CJ | 7 pF @ 1 MHz, 4 V - reduces capacitive coupling noise in high dv/dt gate-drive or snubber circuits |
| TJ max | 175 °C - allows reliable operation in thermally constrained industrial enclosures |
| IFSM | 30 A @ 8.3 ms - withstands typical inrush currents in AC-input front-end rectification |
Pinout & Package
Package: SOD-123W - low-profile surface-mount plastic case (2.7 × 1.6 × 1.0 mm), UL 94V-0 rated, cathode indicated by band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to lower-potential node (e.g., transformer secondary center-tap or switch node) |
| Cathode | Current exit terminal during forward conduction; marked with band | Connected to output rail or filter capacitor positive; defines polarity in layout placement |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures long-term reliability under humidity and thermal cycling per J-STD-020 Level 1 MSL |
| Low profile SOD-123W | Enables ultra-thin power supply designs (<1.1 mm height) and compatibility with automated pick-and-place |
| 175 °C max junction temperature | Supports operation in sealed industrial enclosures without forced air cooling |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green manufacturing |
Applications
| AC-DC Adapter Front-End | Isolated DC-DC Converter Output |
|---|---|
Use Scenario: Rectifying 100–240 VAC input in compact wall adapters and USB-PD power bricks. IC Role / Device Role / Timing Role: Primary-side bridge rectifier replacing discrete diodes in full-wave configuration. Use Value: 800 V VRRM provides 2× safety margin over 375 VDC peak line voltage, minimizing risk of avalanche failure. | Use Scenario: Secondary-side synchronous rectification replacement in 12–48 V isolated flyback or forward converters. IC Role / Device Role / Timing Role: Freewheeling diode clamping transformer leakage energy and conducting output current during switch-off phase. Use Value: 75 ns trr prevents reverse conduction overlap with synchronous MOSFET, reducing cross-conduction losses. |
| Industrial Motor Drive Snubber | Telecom Power Shelf Input Stage |
Use Scenario: RC snubber network across IGBT collector-emitter in 3-phase inverter modules. IC Role / Device Role / Timing Role: Fast-recovery clamp diode absorbing inductive kickback during IGBT turn-off. Use Value: 30 A IFSM handles transient surge currents from motor back-EMF without degradation. | Use Scenario: Input rectification stage in -48 V telecom shelf power supplies with high line transients. IC Role / Device Role / Timing Role: High-voltage input rectifier handling 300 VDC surges and 100 kHz ripple. Use Value: 7 pF CJ minimizes high-frequency noise injection into control circuitry and improves EMI compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MUR108 | 800 V VRRM, 1 A IF, 75 ns trr, DO-214AC package (larger footprint, higher RθJA) | Requires PCB pad redesign; better surge robustness but lower power density | Select when legacy DO-214AC layout exists and thermal margin >30 °C is available |
| Vishay ES1J | 600 V VRRM, 1 A IF, 35 ns trr, same SOD-123W package | Limited to ≤420 VRMS inputs; faster recovery but lower voltage margin | Select only for 230 VAC-only systems where <50 ns trr is critical for EMI reduction |
Compared with MUR108 and ES1J, the HS1KLW uniquely balances 800 V rating, SOD-123W footprint, and 75 ns recovery in a moisture-insensitive, halogen-free construction-making it optimal for space-constrained, globally deployed industrial power supplies requiring long-term reliability without layout change.
Availability
HS1KLW is available at Aetrix Electronics and suitable for DC-DC converters, switching-mode inverters, and freewheeling applications requiring stable component supply, consistent parametric performance, and RoHS-compliant sourcing.
Supply support for HS1KLW 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 and protection markets since 1979.
The HS1KLW belongs to TSC's HS1xLW high-efficiency rectifier family, designed specifically for cost-sensitive, high-volume AC-DC and DC-DC power conversion where reliability, thermal performance, and surface-mount automation compatibility are essential.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) of the HS1KLW?
The HS1KLW has a maximum repetitive peak reverse voltage (VRRM) of 800 V, as specified in the official Taiwan Semiconductor datasheet Version C2103. This rating ensures safe operation under transient overvoltage conditions common in 230 VAC mains-fed power supplies. The HS1KLW maintains this rating across its full operating temperature range of −55 °C to +175 °C without derating.
Does the HS1KLW have a defined forward voltage (VF) specification?
Yes, the HS1KLW has a maximum forward voltage (VF) of 1.7 V at 1 A forward current and 25 °C junction temperature, per the Electrical Specifications table in the Taiwan Semiconductor datasheet. This value is confirmed for HS1JLW, HS1KLW, and HS1MLW variants. At 125 °C, VF decreases slightly due to semiconductor physics, but the 1.7 V max remains the design limit for thermal and loss calculations.
What is the reverse recovery time (trr) of the HS1KLW and how is it measured?
The HS1KLW has a reverse recovery time (trr) of 75 ns, measured under conditions of IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A, as stated in the Electrical Specifications section of the Taiwan Semiconductor datasheet. This parameter reflects the diode's ability to transition from conduction to blocking state and directly impacts switching losses in high-frequency converters.
Which package does the HS1KLW use and what are its mechanical highlights?
The HS1KLW uses the SOD-123W surface-mount package: dimensions 2.7 mm × 1.6 mm × 1.0 mm, UL 94V-0 molding compound, matte tin-plated leads solderable per J-STD-002, and JESD 201 Class 2 whisker resistance. Polarity is marked by a cathode band, and the device weighs approximately 0.016 g. This package supports automated placement and offers superior thermal performance versus standard SOD-123.
Is the HS1KLW compliant with environmental and reliability standards?
Yes, the HS1KLW is RoHS compliant and halogen-free per IEC 61249-2-21. It meets moisture sensitivity level (MSL) 1 per J-STD-020, requires no dry-pack handling, and passes JESD 201 Class 2 whisker testing. These certifications confirm suitability for lead-free reflow assembly and long-term deployment in industrial environments without corrosion or outgassing concerns.
HS1KLW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- SOD-123W
- 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:
- 1 µA @ 800 V
- Capacitance @ Vr, F:
- 7pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123W
- Operating Temperature - Junction:
- -55°C ~ 175°C
HS1KLW FAQ
1.How can I place an order for HS1KLW through Aetrix?
Please submit a Request for Quotation (RFQ) for HS1KLW 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 HS1KLW reliable?
The price and inventory of HS1KLW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HS1KLW is usually 5 days.
3.What payment methods are accepted for HS1KLW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HS1KLW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HS1KLW?
HS1KLW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HS1KLW 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 HS1KLW?
For technical support, including HS1KLW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HS1KLW requirements.
6.How does Aetrix verify that HS1KLW is sourced from the original manufacturer or authorized distributors?
All HS1KLW 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 HS1KLW meets industry standards.
7.What is the process for return or replacement of HS1KLW?
All HS1KLW units undergo pre-shipment inspection (PSI). If there is an issue with HS1KLW, 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 HS1KLW part is unused and in its original packaging.
Return procedure for HS1KLW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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