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Taiwan Semiconductor Corporation HS1FLH
- Part No.:
- HS1FLH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-123
- Datasheet:
-
HS1FLH.pdf
- Description:
- 50NS, 1A, 300V, HIGH EFFICIENT R
- Quantity:
- Payment:
- Shipping:
Inventory:4,383
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Product details
Overview
HS1FLH from Taiwan Semiconductor is a 1A, 300V repetitive peak reverse voltage (VRRM) surface-mount silicon rectifier diode in Sub SMA package, featuring 0.95V max forward voltage at 1A and 50ns reverse recovery time, designed for automotive DC-DC converters and freewheeling paths.
For engineers reviewing the HS1FLH datasheet, HS1FLH pinout, HS1FLH application, or HS1FLH equivalent, key selection criteria include VRRM = 300V, IF = 1A, trr = 50ns, VF ≤ 0.95V, and Sub SMA package compatibility with automated placement and AEC-Q101 qualified reliability.
Technical Context
The HS1FLH is a single-die, glass-passivated, standard recovery rectifier optimized for high-efficiency power conversion in constrained space. Its 300V VRRM, 30A IFSM, and 100°C/W RθJA support robust operation under transient surge and thermal stress in automotive-grade environments.
With junction temperature range of –55°C to +150°C, moisture sensitivity level 1 (J-STD-020), and matte tin-plated leads compliant with J-STD-002, the HS1FLH meets stringent requirements for under-hood automotive electronics and industrial power supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 300 V - Maximum non-repetitive reverse blocking voltage; defines safe operating limit in snubber and freewheeling circuits |
| IF | 1 A continuous - Rated average forward current; determines steady-state power handling capability |
| trr | 50 ns - Reverse recovery time at IF = 0.5A, IR = 1.0A, Irr = 0.25A; impacts switching loss in medium-frequency DC-DC stages |
| VF | ≤ 0.95 V at IF = 1A, TJ = 25°C - Low conduction loss enables higher efficiency in 12V/24V automotive systems |
| CJ | 20 pF at 1 MHz, VR = 4.0V - Junction capacitance affects high-frequency noise coupling and EMI filter design |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient; requires PCB copper area planning for 1A continuous operation |
Pinout & Package
Package: Sub SMA - Low-profile, surface-mount package with cathode band polarity marking, UL 94V-0 molding compound, and matte tin-plated leads solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry | Connected to lower-potential side (e.g., switch node in buck converter freewheel path) |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; connects to output rail or energy storage node; blocks up to 300V reverse bias |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronic modules requiring extended temperature cycling and mechanical shock resistance |
| Glass passivated junction | Enhances long-term reliability and leakage stability under humidity and thermal stress |
| Moisture sensitivity level 1 | Enables direct use without baking; supports standard SMT reflow without popcorning risk |
| Low profile Sub SMA package | Height ≤ 2.3 mm; fits tight clearance designs in LED drivers and engine control units |
Applications
| Automotive DC-DC Converter | LED Headlamp Driver |
|---|---|
Use Scenario: Step-down conversion from 12V/48V battery to regulated 5V/3.3V for microcontrollers and sensors. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous or asynchronous buck topology. Use Value: 0.95V VF minimizes conduction loss; 50ns trr reduces switching transition losses at 200–500 kHz. | Use Scenario: Constant-current regulation for high-brightness automotive LED arrays with PWM dimming. IC Role / Device Role / Timing Role: Snubber diode across MOSFET switch to clamp inductive kickback during turn-off. Use Value: 300V VRRM safely absorbs transients up to 250V; glass passivation ensures stable IR < 5 µA at 125°C. |
| Industrial Power Supply | On-Board Charger Auxiliary Rail |
Use Scenario: Output rectification in isolated flyback or forward converters for PLC I/O modules. IC Role / Device Role / Timing Role: Secondary-side output rectifier delivering 1A load current. Use Value: Sub SMA footprint allows dense layout; RθJA = 100°C/W enables natural convection cooling on 1 oz copper. | Use Scenario: Auxiliary 12V rail generation from high-voltage battery in EV onboard chargers. IC Role / Device Role / Timing Role: Input-stage rectifier feeding offline controller ICs and gate drivers. Use Value: AEC-Q101 qualification ensures reliability across vehicle lifetime; 30A IFSM withstands inrush surges during cold start. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1L03U | VRRM = 300V, IF = 1A, trr = 45ns, DO-214AC package | Same VRRM/IF; slightly faster recovery but larger DO-214AC footprint | Preferred where tighter trr is critical and board space permits larger package |
| ES1D-E3/57T | VRRM = 200V, IF = 1A, trr = 35ns, SMA package | Lower VRRM limits use to ≤150V systems; faster recovery but insufficient for 300V-rated designs | Only suitable for 24V/48V low-voltage auxiliary rails where 300V margin is not required |
Compared with STTH1L03U and ES1D-E3/57T, the HS1FLH offers AEC-Q101 qualification and Sub SMA's lower profile-critical for automotive under-hood modules-while maintaining balanced trr and VF for cost-sensitive, thermally constrained 300V rectification.
Availability
HS1FLH is available at Aetrix Electronics and suitable for automotive DC-DC converters, LED headlamp drivers, and industrial flyback power supplies requiring stable component supply, AEC-Q101 compliance, and consistent Sub SMA packaging.
Supply support for HS1FLH 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, specializing in high-reliability rectifiers, TVS devices, and power MOSFETs.
The HS1FLH belongs to TSC's AEC-Q101-qualified HS1xLH rectifier family, engineered specifically for automotive and industrial power conversion where compact size, thermal robustness, and long-term parametric stability are essential.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) rating for HS1FLH?
The HS1FLH has a VRRM rating of 300 V, meaning it can block up to 300 volts of reverse voltage repeatedly without breakdown. This value is confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version A2103) and defines its suitability for 24V/48V automotive bus-derived circuits with safety margin.
Is HS1FLH qualified for automotive applications?
Yes, HS1FLH is AEC-Q101 qualified, verified through standardized stress tests including temperature cycling, highly accelerated life testing, and mechanical shock. This qualification makes HS1FLH appropriate for under-hood and cabin electronics where reliability across –40°C to +125°C ambient is mandatory.
What is the forward voltage drop (VF) of HS1FLH at rated current?
At IF = 1 A and TJ = 25°C, the HS1FLH exhibits a maximum forward voltage of 0.95 V, measured under pulsed conditions (PW = 0.3 ms). This low VF directly reduces conduction loss and improves efficiency in high-duty-cycle rectification paths.
Does HS1FLH have a defined reverse recovery time (trr)?
Yes, HS1FLH has a specified trr of 50 ns, tested at IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This parameter is critical for estimating switching losses in medium-frequency DC-DC converters and confirms its classification as a standard recovery rectifier.
What package type does HS1FLH use, and is it compatible with automated assembly?
HS1FLH uses the Sub SMA package-a low-profile variant of SMA with reduced height and optimized pad layout. It is explicitly designed for automated placement and reflow soldering, with moisture sensitivity level 1 (J-STD-020) and matte tin-plated leads compliant with J-STD-002.
HS1FLH 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Sub SMA
- Operating Temperature - Junction:
- -55°C ~ 150°C
HS1FLH FAQ
1.How can I place an order for HS1FLH through Aetrix?
Please submit a Request for Quotation (RFQ) for HS1FLH 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 HS1FLH reliable?
The price and inventory of HS1FLH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HS1FLH is usually 5 days.
3.What payment methods are accepted for HS1FLH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HS1FLH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HS1FLH?
HS1FLH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HS1FLH 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 HS1FLH?
For technical support, including HS1FLH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HS1FLH requirements.
6.How does Aetrix verify that HS1FLH is sourced from the original manufacturer or authorized distributors?
All HS1FLH 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 HS1FLH meets industry standards.
7.What is the process for return or replacement of HS1FLH?
All HS1FLH units undergo pre-shipment inspection (PSI). If there is an issue with HS1FLH, 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 HS1FLH part is unused and in its original packaging.
Return procedure for HS1FLH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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