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Taiwan Semiconductor Corporation HS1FH
- Part No.:
- HS1FH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
HS1FH.pdf
- Description:
- 50NS, 1A, 300V, HIGH EFFICIENT R
- Quantity:
- Payment:
- Shipping:
Inventory:14,985
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Product details
Overview
HS1FH from Taiwan Semiconductor is a 300 V, 1 A fast recovery surface-mount rectifier diode in DO-214AC (SMA) package, featuring 50 ns reverse recovery time, 1.0 V forward voltage at 1 A, and AEC-Q101 qualification for automotive-grade reliability - used in DC/DC converters and snubber circuits.
For engineers reviewing the HS1FH datasheet, HS1FH pinout, HS1FH application, or HS1FH equivalent, key selection criteria include peak reverse voltage (300 V), forward surge current (30 A), junction-to-lead thermal resistance (15 °C/W), and moisture sensitivity level (J-STD-020 Level 1).
Technical Context
The HS1FH operates as a single-die, unidirectional silicon rectifier with glass-passivated junction for enhanced reliability and fast switching performance. Its 50 ns trr and low VF support high-frequency switching topologies in power conversion stages.
Thermal design is enabled by RθJL = 15 °C/W and RθJA = 70 °C/W on a 5 mm × 5 mm Cu pad PCB, while its DO-214AC (SMA) package supports automated placement and meets UL 94V-0 flammability rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 300 V - Maximum repetitive reverse voltage before breakdown; defines safe operating range in flyback or snubber applications. |
| IF | 1 A - Continuous forward current rating; determines steady-state conduction capability in DC/DC output stages. |
| IFSM | 30 A - Peak non-repetitive surge current (8.3 ms half-sine); supports inrush and transient overload handling. |
| trr | 50 ns - Reverse recovery time; enables efficient operation up to ~1 MHz switching frequencies in SMPS. |
| VF | 1.0 V @ 1 A, 25°C - Forward voltage drop; directly impacts conduction loss and thermal dissipation in high-duty-cycle designs. |
| RθJL | 15 °C/W - Junction-to-lead thermal resistance; enables accurate thermal modeling when mounted on standard PCB copper pads. |
| CJ | 20 pF @ 1 MHz, 4 V - Junction capacitance; influences high-frequency noise coupling and EMI filter design in switching nodes. |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, single-anode/single-cathode configuration with cathode band marking. Weight: 0.060 g. Moisture sensitivity level: J-STD-020 Level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry | Connected to lower-potential side of circuit (e.g., switch node in buck converter); polarity must match layout silkscreen. |
| Cathode | Forward current exit / reverse blocking terminal | Marked by visible band; connects to higher-potential rail (e.g., output capacitor positive); critical for correct freewheeling path. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood environments including temperature cycling, humidity, and mechanical shock per stress test requirements. |
| Glass passivated junction | Provides robust protection against environmental contamination and leakage current drift over lifetime in humid or contaminated PCB assemblies. |
| Fast recovery (50 ns) | Minimizes reverse recovery charge (Qrr) and associated switching losses in high-frequency converters (>100 kHz). |
| DO-214AC (SMA) package | Enables high-density automated placement and reflow compatibility; standardized footprint simplifies board layout and sourcing flexibility. |
| Halogen-free & RoHS compliant | Meets EU Directive 2011/65/EU and IPC-1752A material declaration requirements for environmentally restricted substances. |
Applications
| DC/DC Converter Output Rectification | Snubber Network Diode |
|---|---|
Use Scenario: Used in secondary-side synchronous or asynchronous rectification of isolated DC/DC converters (e.g., flyback, forward). IC Role / Device Role / Timing Role: Freewheeling diode providing low-loss current path during MOSFET off-time; handles 1 A continuous forward current. Use Value: 1.0 V VF reduces conduction loss vs. Schottky alternatives at >100°C junction temperature; 300 V VRRM supports 24 V–48 V input systems with safety margin. | Use Scenario: Placed across switching FETs or transformers to clamp voltage spikes during turn-off transitions. IC Role / Device Role / Timing Role: Transient voltage clamping diode absorbing inductive energy; relies on fast 50 ns trr to minimize ringback. Use Value: Low junction capacitance (20 pF) limits capacitive loading on snubber RC network; 30 A IFSM withstands repeated surge events without degradation. |
| Lighting Driver Freewheeling | Switching Inverter Auxiliary Rectification |
Use Scenario: Freewheeling path in constant-current LED drivers using buck or boost topology with PWM dimming. IC Role / Device Role / Timing Role: Provides return path for inductor current during switch-off phase; operates at 100–500 kHz switching frequencies. Use Value: AEC-Q101 qualification ensures long-term reliability in thermally stressed lighting enclosures; J-STD-020 Level 1 allows standard reflow without baking. | Use Scenario: Auxiliary rectification in three-phase inverter gate driver power supplies or auxiliary bias rails. IC Role / Device Role / Timing Role: Converts AC auxiliary winding output to stable DC bias voltage; subjected to intermittent load transients. Use Value: 150°C maximum junction temperature enables operation in high-ambient industrial inverter cabinets; matte tin plating ensures solder joint integrity after thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1L03S | 300 V VRRM, 1 A IF, 50 ns trr, but TO-277 package (SMD, 3-pin, anode-cathode-kathode) and higher VF (1.15 V). | Requires different PCB footprint and may increase conduction loss in thermally constrained layouts. | Prefer HS1FH where DO-214AC footprint and lower VF are critical for thermal management. |
| ES1D-E3/57T | 200 V VRRM, same DO-214AC package and 1 A rating, but 35 ns trr and 0.95 V VF. | Limited to ≤200 V systems; unsuitable for 300 V bus applications like 48 V telecom or industrial PSUs. | Select HS1FH when 300 V blocking is mandatory and 50 ns trr remains sufficient for target switching frequency. |
Compared with STTH1L03S and ES1D-E3/57T, the HS1FH delivers optimal balance of 300 V rating, 1.0 V forward drop, and DO-214AC compatibility - making it preferred for space-constrained, automotive-qualified 48 V system rectification where thermal and footprint constraints dominate.
Availability
HS1FH is available at Aetrix Electronics and suitable for DC/DC converters, snubber networks, lighting drivers, and switching inverters requiring stable component supply and automotive-grade reliability.
Supply support for HS1FH 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 automotive, industrial, and consumer markets since 1979.
The HS1FH belongs to TSC's HS1xH high-efficiency rectifier family, engineered specifically for fast-switching, surface-mount power conversion applications demanding AEC-Q101 compliance and robust thermal performance in compact packages.
FAQ
What is the maximum junction temperature rating for the HS1FH?
The HS1FH has a maximum junction temperature (TJ) of +150°C, validated across its full operating range from –55°C to +150°C. This rating supports reliable operation in under-hood automotive environments and high-ambient industrial power supplies. Thermal design must respect RθJL = 15 °C/W and RθJA = 70 °C/W on a 5 mm × 5 mm Cu pad to avoid exceeding this limit. The HS1FH datasheet specifies derating curves confirming sustained 1 A operation up to 125°C ambient with proper PCB copper area.
Is the HS1FH pin-compatible with other devices in the HS1xH series?
Yes, all HS1xH devices - including HS1AH through HS1MH - share identical DO-214AC (SMA) packaging, anode/cathode pinout, and mechanical dimensions. The HS1FH differs only in its 300 V VRRM rating and corresponding electrical parameters (e.g., VF, trr). This uniformity allows direct substitution within the same footprint when voltage rating adjustments are needed, provided thermal and surge margins remain adequate for the target application.
Does the HS1FH meet automotive qualification standards?
Yes, the HS1FH is explicitly AEC-Q101 qualified per the manufacturer's documentation, covering stress tests including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing. This qualification confirms suitability for automotive powertrain, body electronics, and ADAS subsystems where reliability under thermal and mechanical stress is mandatory. The HS1FH's glass-passivated junction and J-STD-020 Level 1 moisture sensitivity further reinforce its automotive readiness.
What is the reverse recovery time (trr) of the HS1FH and how is it measured?
The HS1FH has a typical reverse recovery time (trr) of 50 ns, measured under conditions of IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A per JEDEC standards. This value reflects the diode's ability to transition rapidly from conduction to blocking state, minimizing switching losses in high-frequency converters. The HS1FH's 50 ns trr is confirmed across the full temperature range and is consistent with its use in 100–500 kHz DC/DC topologies where fast recovery is essential for efficiency.
Can the HS1FH be used in place of a Schottky diode?
The HS1FH can replace Schottky diodes in applications requiring ≥300 V blocking voltage, where Schottky devices are unavailable or exhibit excessive leakage at elevated temperatures. Unlike Schottky diodes, the HS1FH uses a PN junction with lower reverse leakage at >100°C but higher VF (~1.0 V vs. ~0.5 V). Its 50 ns trr and AEC-Q101 qualification make it suitable for automotive and industrial environments where Schottky limitations in voltage rating or temperature stability are problematic. Always verify thermal and switching loss trade-offs in the final HS1FH design.
HS1FH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 300 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 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:
- DO-214AC (SMA)
- Operating Temperature - Junction:
- -55°C ~ 150°C
HS1FH FAQ
1.How can I place an order for HS1FH through Aetrix?
Please submit a Request for Quotation (RFQ) for HS1FH 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 HS1FH reliable?
The price and inventory of HS1FH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HS1FH is usually 5 days.
3.What payment methods are accepted for HS1FH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HS1FH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HS1FH?
HS1FH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HS1FH 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 HS1FH?
For technical support, including HS1FH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HS1FH requirements.
6.How does Aetrix verify that HS1FH is sourced from the original manufacturer or authorized distributors?
All HS1FH 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 HS1FH meets industry standards.
7.What is the process for return or replacement of HS1FH?
All HS1FH units undergo pre-shipment inspection (PSI). If there is an issue with HS1FH, 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 HS1FH part is unused and in its original packaging.
Return procedure for HS1FH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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