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Taiwan Semiconductor Corporation HS1KF-T
- Part No.:
- HS1KF-T
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
HS1KF-T.pdf
- Description:
- 75NS, 1A, 800V, HIGH EFFICIENT R
- Quantity:
- Payment:
- Shipping:
Inventory:7,500
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Product details
Overview
HS1KF-T from Taiwan Semiconductor is a 1A, 800V high-efficiency surface-mount silicon rectifier diode in SMAF package, featuring low reverse leakage (≤5 µA at 25°C), fast recovery time (75 ns), and 1.23 V forward voltage at 1.0 A/25°C. It serves as a freewheeling or output rectifier in switching-mode power supplies.
For engineers reviewing the HS1KF-T datasheet, HS1KF-T pinout, HS1KF-T application, or HS1KF-T equivalent, key selection criteria include peak reverse voltage rating, thermal resistance (RθJL = 15 °C/W), junction temperature limit (+150°C), and compatibility with automated SMT placement on standard PCB pads.
Technical Context
The HS1KF-T is a single-die, glass-passivated PN-junction rectifier optimized for high-voltage DC-DC conversion. Its 800 V VRRM, 30 A IFSM (8.3 ms), and 1.23 V typical VF at 1.0 A/25°C support robust operation under transient surge and continuous conduction mode.
Thermal performance is defined by RθJL = 15 °C/W and RθJA = 89 °C/W on a 5 mm × 5 mm Cu pad. Reverse recovery time of 75 ns and junction capacitance of 8 pF (1 MHz, 4 V) enable efficient high-frequency switching in SMPS topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - supports input rectification up to 565 V AC RMS or 800 V DC bus applications |
| IF | 1 A continuous - rated for sustained output current in compact SMT power stages |
| VF @ 1.0 A, 25°C | 1.23 V typ / 1.70 V max - determines conduction loss and thermal load in high-duty-cycle operation |
| trr | 75 ns max - enables use in 100–500 kHz switching converters with low switching loss |
| RθJL | 15 °C/W - allows direct thermal coupling to PCB copper for passive heatsinking without external heatsink |
| IR @ VRRM, 25°C | ≤5 µA - ensures minimal standby power loss in high-impedance bias networks |
| Junction temp. range | −55°C to +150°C - qualified for industrial and automotive under-hood ambient conditions |
Pinout & Package
Package: SMAF (Surface-Mount Axial Flat) - molded plastic case with matte tin-plated leads, UL 94V-0 rated, polarity indicated by cathode band, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry | Connected to lower-potential side (e.g., switch node or transformer secondary center-tap) |
| Cathode | Forward current exit / reverse blocking terminal | Connected to output rail or filter capacitor; cathode band marks this terminal physically |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enhances long-term reliability and humidity resistance in unsealed industrial environments |
| Low IR (≤5 µA @ 25°C) | Reduces standby power loss in energy-sensitive battery-backed or IoT power rails |
| Moisture sensitivity level 1 | Enables direct placement without baking-reduces manufacturing overhead and floor-life risk |
| RoHS & halogen-free compliance | Meets IPC-JEDEC J-STD-020 and IEC 61249-2-21 for green electronics manufacturing |
| 1.0 ms IFSM = 90 A | Withstands severe inrush or fault currents during startup or short-circuit events |
Applications
| DC-DC Converter Output Rectification | Switching Inverter Freewheeling |
|---|---|
Use Scenario: Secondary-side synchronous or diode rectification in isolated flyback or forward converters delivering 5–24 V at ≤1 A. IC Role / Device Role / Timing Role: Unidirectional current path enabling energy transfer from transformer to output capacitor while blocking reverse voltage. Use Value: 800 V VRRM provides margin against reflected transients; 75 ns trr minimizes switching loss at 200–300 kHz operation. | Use Scenario: Freewheeling path across inductive loads (e.g., motor windings or relay coils) in half-bridge inverters. IC Role / Device Role / Timing Role: Provides low-loss recirculation path during high-side switch off-time to clamp inductive kickback. Use Value: 1.23 V VF limits conduction loss during extended freewheeling intervals; 150°C TJMAX supports sustained duty in thermally constrained enclosures. |
| AC-DC Adapter Input Bridge Leg | Industrial Sensor Power Supply Rectification |
Use Scenario: Single-leg replacement in compact 20–40 W universal-input (90–264 V AC) adapters using discrete bridge configuration. IC Role / Device Role / Timing Role: High-voltage leg in full-wave rectifier stage converting AC line to bulk DC before PFC or buck converter. Use Value: 800 V rating accommodates 264 V AC × √2 ≈ 373 V peak plus safety margin; SMAF footprint saves board space vs. DO-41. | Use Scenario: Low-power auxiliary supply (e.g., 12 V @ 100 mA) for analog sensor signal conditioning in factory automation nodes. IC Role / Device Role / Timing Role: Input rectifier feeding linear regulator or low-noise LDO from transformer-derived AC. Use Value: ≤5 µA IR prevents loading of high-impedance transformer secondaries; RoHS/halogen-free compliance meets industrial certification requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R08U | 800 V VRRM, 1 A IF, 75 ns trr, but TO-277 package (higher RθJA = 110 °C/W) | Requires larger PCB pad area; less suitable for ultra-thin or dense layouts | Prefer HS1KF-T when board space or thermal coupling to copper is constrained |
| MBR160H | 60 V VRRM, Schottky architecture, 0.55 V VF - not voltage-compatible | Only usable in low-voltage (<100 V) DC-DC outputs; cannot replace HS1KF-T in 800 V applications | Select only if system voltage is ≤60 V and ultra-low VF is critical; not a drop-in alternative |
Compared with STTH1R08U, HS1KF-T offers superior thermal coupling via SMAF package (RθJL = 15 °C/W vs. 25 °C/W), while MB R160H lacks voltage rating for HS1KF-T's intended 800 V use cases-making HS1KF-T the sole viable choice for compact, high-voltage, SMT rectification.
Availability
HS1KF-T is available at Aetrix Electronics and suitable for DC-DC converter output rectification, switching inverter freewheeling, and AC-DC adapter input bridge legs requiring stable component supply, consistent parametric performance, and RoHS-compliant sourcing.
Supply support for HS1KF-T 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 Taiwanese manufacturer specializing in discrete power semiconductors, including rectifiers, TVS diodes, and MOSFETs, with ISO/TS 16949 and AEC-Q101 qualified lines.
The HS1KF-T belongs to TSC's HS1x-F series of high-efficiency surface-mount rectifiers, designed specifically for space-constrained, high-reliability industrial and consumer power conversion where voltage rating, thermal performance, and automated assembly compatibility are critical.
FAQ
What is the maximum repetitive peak reverse voltage rating for HS1KF-T?
The HS1KF-T has a maximum repetitive peak reverse voltage (VRRM) of 800 V, as confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet Version B2103. This rating defines the highest reverse voltage the device can block repeatedly without breakdown under normal operating conditions and is the defining parameter distinguishing HS1KF-T from other variants like HS1JF-T (600 V) or HS1MF-T (1000 V).
Does HS1KF-T have a specified reverse recovery time, and how is it measured?
Yes, HS1KF-T 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 section of the datasheet. This value applies to HS1JF-T through HS1MF-T variants and reflects the diode's speed in transitioning from conduction to blocking state-critical for minimizing switching losses in high-frequency SMPS designs.
What is the forward voltage drop of HS1KF-T at rated current and room temperature?
The HS1KF-T exhibits a typical forward voltage (VF) of 1.23 V at 1.0 A and 25°C, with a maximum of 1.70 V under the same conditions. These values are specified in the Electrical Specifications table and directly impact conduction loss and thermal design-e.g., at 1 A, average power dissipation ranges from 1.23 W to 1.70 W depending on unit variation and thermal environment.
Is HS1KF-T compatible with lead-free reflow soldering processes?
Yes, HS1KF-T features matte tin-plated leads compliant with J-STD-002 for solderability and is rated for moisture sensitivity level 1 per J-STD-020, meaning it can be placed directly onto PCBs without pre-baking. Its SMAF package is qualified for standard lead-free reflow profiles (peak ~260°C), supporting high-yield automated assembly in modern electronics manufacturing.
What thermal resistance values are specified for HS1KF-T, and how are they measured?
HS1KF-T specifies RθJL = 15 °C/W (junction-to-lead), RθJC = 22 °C/W (junction-to-case), and RθJA = 89 °C/W (junction-to-ambient), all measured on a standardized 5 mm × 5 mm copper pad test board. These values define thermal pathways for system-level thermal design-RθJL is especially relevant for PCB copper thermal spreading, while RθJA guides worst-case ambient derating.
HS1KF-T 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):
- 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:
- 8pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMAF
- Operating Temperature - Junction:
- -55°C ~ 150°C
HS1KF-T FAQ
1.How can I place an order for HS1KF-T through Aetrix?
Please submit a Request for Quotation (RFQ) for HS1KF-T 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 HS1KF-T reliable?
The price and inventory of HS1KF-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HS1KF-T is usually 5 days.
3.What payment methods are accepted for HS1KF-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HS1KF-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HS1KF-T?
HS1KF-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HS1KF-T 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 HS1KF-T?
For technical support, including HS1KF-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HS1KF-T requirements.
6.How does Aetrix verify that HS1KF-T is sourced from the original manufacturer or authorized distributors?
All HS1KF-T 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 HS1KF-T meets industry standards.
7.What is the process for return or replacement of HS1KF-T?
All HS1KF-T units undergo pre-shipment inspection (PSI). If there is an issue with HS1KF-T, 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 HS1KF-T part is unused and in its original packaging.
Return procedure for HS1KF-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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