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Taiwan Semiconductor Corporation HS1FL
- Part No.:
- HS1FL
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-123
- Datasheet:
-
HS1FL.pdf
- Description:
- 50NS, 1A, 300V, HIGH EFFICIENT R
- Quantity:
- Payment:
- Shipping:
Inventory:6,821
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Product details
Overview
HS1FL from Taiwan Semiconductor is a 1A, 300V repetitive peak reverse voltage surface-mount silicon rectifier diode in Sub SMA package, featuring 0.95V max forward voltage at 1A and 50ns max reverse recovery time. It serves as a high-efficiency freewheeling or output rectifier in DC-DC converters and switching inverters operating up to 150°C junction temperature.
For engineers reviewing the HS1FL datasheet, HS1FL pinout, HS1FL application, or HS1FL equivalent, key selection criteria include its 300V VRRM rating, 30A IFSM surge capability, J-STD-020 Level 1 moisture sensitivity, UL 94V-0 molding compound, and compatibility with automated SMT placement in power conversion stages.
Technical Context
The HS1FL is a single-die, glass-passivated PN-junction rectifier optimized for high-frequency switching applications. Its 50ns trr and low 0.95V VF at 1A enable reduced conduction and switching losses in SMPS topologies.
Thermally, it exhibits 100°C/W junction-to-ambient resistance in standard PCB mounting, with rated operation from –55°C to +150°C and polarity indicated by cathode band. The Sub SMA package supports reflow soldering per J-STD-002.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 300 V - Maximum repetitive reverse blocking voltage; defines safe DC/peak AC voltage handling in rectification paths |
| IF | 1 A - Continuous average forward current; sets steady-state power delivery capacity in converter outputs |
| IFSM | 30 A - Non-repetitive surge current (8.3ms half-sine); supports inrush and fault-current tolerance |
| VF @ 1A, 25°C | ≤0.95 V - Forward voltage drop; directly determines conduction loss and thermal load at rated current |
| trr | ≤50 ns - Reverse recovery time; critical for minimizing switching losses in >100 kHz SMPS designs |
| TJ max | +150 °C - Maximum junction temperature; enables operation in thermally constrained industrial environments |
| CJ @ 1MHz, 4V | 20 pF - Junction capacitance; influences high-frequency noise and snubber design in fast-switching circuits |
Pinout & Package
Package: Sub SMA - Low-profile, surface-mount plastic package with matte tin-plated leads, UL 94V-0 rated molding compound, and cathode polarity marked by band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry | Connected to lower-potential side of rectification path (e.g., transformer secondary center-tap or switch node) |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; connects to output filter capacitor or load return; blocks up to 300V reverse bias |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enhances long-term reliability and humidity resistance in unsealed industrial assemblies |
| Level 1 moisture sensitivity | Enables use without dry-pack or baking prior to SMT reflow, reducing manufacturing overhead |
| Low-profile Sub SMA footprint | Minimizes board space and height in compact power modules and embedded converters |
| Halogen-free construction | Complies with IEC 61249-2-21 for environmentally regulated end equipment |
| JESD 201 Class 1A whisker resistance | Prevents tin whisker growth under thermal cycling, ensuring long-term solder joint integrity |
Applications
| DC-DC Converter Output Rectification | Switching Inverter Freewheeling |
|---|---|
Use Scenario: Secondary-side synchronous or diode rectification in isolated 12V–48V input DC-DC converters delivering up to 1A continuous load. IC Role / Device Role / Timing Role: Power rectifier converting high-frequency AC from transformer secondary into regulated DC output. Use Value: 0.95V VF and 50ns trr minimize conduction and switching losses, improving efficiency over 90% at full load. | Use Scenario: Freewheeling path across inductive loads (e.g., motor windings or relay coils) in 300V-rated H-bridge inverters. IC Role / Device Role / Timing Role: Clamp diode providing low-impedance recirculation path during switch-off transitions. Use Value: 300V VRRM rating and 30A IFSM withstand transient voltage spikes and inductive kickback without avalanche failure. |
| AC-DC Adapter Secondary Side | Industrial SMPS Input Stage |
Use Scenario: Output rectification in universal-input (90–264V AC), 12V/1A wall adapters using flyback topology. IC Role / Device Role / Timing Role: Unidirectional current valve shaping transformer output into stable DC bus for linear/LDO post-regulation. Use Value: Sub SMA package allows dense layout; 150°C TJ max supports sealed enclosures with limited airflow. | Use Scenario: Input bridge rectification or PFC boost diode in 24V/48V industrial power supplies with wide ambient temperature range. IC Role / Device Role / Timing Role: High-reliability rectifier handling continuous 1A and repetitive surges in harsh factory environments. Use Value: Glass passivation and JESD 201 Class 1A qualification ensure stable performance under thermal cycling and humidity exposure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1L03S | Same 300V VRRM, 1A IF, but TO-277 package (larger footprint, higher RθJA ≈ 120°C/W) | Less suitable for ultra-compact layouts; requires larger pad area and thermal relief | Choose when higher surge margin (40A IFSM) justifies larger size and thermal derating |
| MBR130LSFT1G | Schottky structure (30V VRRM only); 0.45V VF but cannot block 300V reverse voltage | Only viable in low-voltage (<40V) DC-DC outputs where reverse stress is limited | Select only for sub-40V systems prioritizing ultra-low VF over high-voltage blocking |
Compared with STTH1L03S and MBR130LSFT1G, the HS1FL uniquely balances 300V blocking, 1A current, Sub SMA compactness, and 50ns trr-making it optimal for space-constrained, medium-voltage switching rectifiers where thermal and EMI performance are co-critical.
Availability
HS1FL is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and freewheeling applications requiring stable component supply, consistent parametric performance, and RoHS/halogen-free compliance.
Supply support for HS1FL 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 industrial, computing, and consumer markets since 1979.
The HS1FL belongs to TSC's HS1xL high-efficiency rectifier family, engineered specifically for cost-sensitive, high-volume SMT power conversion applications demanding reliability, tight parameter distribution, and J-STD-compliant manufacturability.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) rating for HS1FL?
The HS1FL has a VRRM rating of 300 V, meaning it can reliably block up to 300 volts of repetitive reverse voltage in rectifier or freewheeling configurations. This value is confirmed in the Absolute Maximum Ratings table on page 1 of the official Taiwan Semiconductor HS1AL–HS1ML datasheet (Version C2103). Exceeding this voltage risks avalanche breakdown or permanent damage to the HS1FL junction.
Does HS1FL support lead-free reflow soldering processes?
Yes, the HS1FL supports lead-free reflow soldering. Its matte tin-plated leads comply with J-STD-002 for solderability, and the Sub SMA package is rated for standard Pb-free reflow profiles. The device is also classified as Moisture Sensitivity Level 1 per J-STD-020, eliminating the need for pre-baking before assembly-critical for high-yield manufacturing of the HS1FL.
What is the typical forward voltage drop (VF) of HS1FL at 1A and 25°C?
The HS1FL exhibits a maximum forward voltage drop of 0.95 V at 1 A and 25°C junction temperature, as specified in the Electrical Specifications table. This VF value is measured under pulsed conditions (PW = 0.3 ms) and directly impacts conduction loss and thermal design-lower VF reduces power dissipation and improves efficiency in the HS1FL's target applications.
Can HS1FL be used as a direct replacement for HS1DL or HS1GL in existing designs?
No-HS1FL is not a direct replacement for HS1DL (200V) or HS1GL (400V), as each variant has distinct VRRM, VF, and trr values. HS1FL's 300V rating sits between them, and its 0.95V VF and 50ns trr differ from HS1GL's 1.30V VF and same 50ns trr. Board-level validation is required before substituting HS1FL in a design originally qualified with HS1DL or HS1GL.
Is HS1FL halogen-free and RoHS compliant?
Yes, the HS1FL is both halogen-free per IEC 61249-2-21 and RoHS compliant, as explicitly stated in the FEATURES section of the Taiwan Semiconductor datasheet. These environmental qualifications make the HS1FL suitable for export-controlled and eco-regulated end equipment, including industrial automation and energy-efficient consumer power supplies.
HS1FL 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):
- 300 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 950 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 300 V
- Capacitance @ Vr, F:
- 20pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Sub SMA
- Operating Temperature - Junction:
- -55°C ~ 150°C
HS1FL FAQ
1.How can I place an order for HS1FL through Aetrix?
Please submit a Request for Quotation (RFQ) for HS1FL 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 HS1FL reliable?
The price and inventory of HS1FL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HS1FL is usually 5 days.
3.What payment methods are accepted for HS1FL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HS1FL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HS1FL?
HS1FL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HS1FL 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 HS1FL?
For technical support, including HS1FL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HS1FL requirements.
6.How does Aetrix verify that HS1FL is sourced from the original manufacturer or authorized distributors?
All HS1FL 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 HS1FL meets industry standards.
7.What is the process for return or replacement of HS1FL?
All HS1FL units undergo pre-shipment inspection (PSI). If there is an issue with HS1FL, 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 HS1FL part is unused and in its original packaging.
Return procedure for HS1FL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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