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Taiwan Semiconductor Corporation HS1GFS
- Part No.:
- HS1GFS
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-128
- Datasheet:
-
HS1GFS.pdf
- Description:
- DIODE GEN PURP 400V 1A SOD128
- Quantity:
- Payment:
- Shipping:
Inventory:7,000
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Product details
Overview
HS1GFS from Taiwan Semiconductor is a 1 A, 400 V repetitive peak reverse voltage (VRRM) surface-mount fast recovery rectifier in SOD-128 package, featuring 50 ns reverse recovery time (trr), 0.91 V typical forward voltage at 1.0 A/25°C, and 17 pF junction capacitance - optimized for DC-DC converters and switching-mode power supplies.
For engineers reviewing the HS1GFS datasheet, HS1GFS pinout, HS1GFS application, or HS1GFS equivalent, key selection criteria include its 400 V VRRM, low 0.91 V VF at rated current, fast 50 ns trr, thermal resistance of 29 °C/W (junction-to-lead), and SOD-128 footprint compatibility with high-density PCB layouts.
Technical Context
The HS1GFS employs a glass-passivated silicon die in a single-diode configuration, enabling stable operation up to 150 °C junction temperature. Its fast recovery (trr ≤ 50 ns) and low forward voltage support high-frequency switching efficiency in SMPS topologies.
Thermal performance is defined by RθJL = 29 °C/W on a 5 mm × 5 mm copper pad, with moisture sensitivity level 1 (J-STD-020) and matte tin-plated leads compliant with J-STD-002 solderability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - maximum non-repetitive reverse blocking voltage before breakdown; defines usable input voltage range in offline or boost converters |
| IF | 1 A continuous average forward current - supports output stages delivering up to ~12 W at 12 V with adequate heatsinking |
| trr | ≤ 50 ns - enables operation at ≥100 kHz switching frequencies with minimal switching loss and EMI generation |
| VF @ 1 A, 25°C | 0.91 V typical - reduces conduction loss to ~0.91 W per device, critical for thermal management in compact designs |
| CJ | 17 pF @ 1 MHz, 4 V - limits capacitive coupling noise and improves high-frequency rectification stability |
| RθJL | 29 °C/W - allows direct thermal path to PCB copper, supporting >0.8 W dissipation without external heatsink |
Pinout & Package
Package: SOD-128 - low-profile, surface-mount plastic package with cathode band marking; dimensions per Taiwan Semiconductor outline drawing; compatible with standard reflow profiles (MSL Level 1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., switch node in flyback secondary or buck sync rectifier) |
| Cathode | Forward current exit / reverse-blocking terminal | Marked by band; ties to output rail or positive bus; withstands up to 400 V reverse bias |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures long-term reliability under humidity and thermal cycling; eliminates need for conformal coating in industrial environments |
| Fast recovery (trr ≤ 50 ns) | Reduces reverse recovery charge (Qrr) to <15 nC, minimizing cross-conduction loss in synchronous rectification |
| Low profile SOD-128 package | 0.9 mm max height enables use in ultra-thin power modules and space-constrained consumer adapters |
| RoHS & halogen-free compliance | Meets IEC 61249-2-21; supports export to EU, Japan, and other regulated markets without material declaration overhead |
Applications
| DC-DC Converter Secondary Rectification | Switching Mode Inverter Freewheeling |
|---|---|
Use Scenario: High-efficiency 12 V → 5 V/3.3 V isolated DC-DC converter in telecom power supply. IC Role / Device Role / Timing Role: Output rectifier diode in forward or flyback topology, conducting during transformer reset phase. Use Value: 0.91 V VF and 50 ns trr reduce conduction + switching losses by ~18% vs. standard FR107, improving full-load efficiency to >89%. | Use Scenario: Bidirectional freewheeling path in half-bridge motor drive inverter stage. IC Role / Device Role / Timing Role: Clamp diode providing low-loss return path for inductive kickback during PWM dead-time. Use Value: 400 V VRRM and 35 A IFSM safely absorb 300 V bus transients while maintaining <1.3 V clamp voltage at 1 A. |
| AC-DC Adapter Output Stage | Industrial PLC Power Input Protection |
Use Scenario: Secondary-side rectification in universal-input 5 V/2.4 A wall adapter. IC Role / Device Role / Timing Role: Unidirectional current valve converting transformer AC output to regulated DC bus. Use Value: SOD-128 footprint enables automated placement; 17 pF CJ minimizes high-frequency noise coupling into feedback loop. | Use Scenario: Reverse-polarity and surge protection at 24 V DC input of programmable logic controller. IC Role / Device Role / Timing Role: Series blocking diode preventing damage from accidental reverse connection or back-fed voltage. Use Value: 150 °C TJMAX and 29 °C/W RθJL ensure reliable operation under 70 °C ambient with no derating up to 0.75 A. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R04 | Same 1 A / 400 V rating; trr = 45 ns; VF = 0.95 V @ 1 A; TO-220AC package (not SMD) | Requires through-hole assembly and larger board area; unsuitable for high-density layouts | Select when higher surge current (IFSM = 50 A) or legacy through-hole manufacturing is required |
| ES1D | 1 A / 200 V VRRM; trr = 35 ns; VF = 0.93 V @ 1 A; same SOD-128 package | Limited to ≤200 V circuits; insufficient for 375 V DC-link or universal AC input designs | Select only for cost-sensitive 100–200 V applications where 400 V margin is unnecessary |
Compared with STTH1R04 and ES1D, the HS1GFS uniquely balances 400 V blocking, SOD-128 surface-mount compatibility, and 50 ns recovery - making it optimal for space-constrained, medium-voltage DC-DC and inverter freewheeling where leaded alternatives add assembly cost and ES1D lacks voltage headroom.
Availability
HS1GFS is available at Aetrix Electronics and suitable for DC-DC converters, switching-mode inverters, and industrial PLC power inputs requiring stable component supply, consistent parametric performance, and RoHS-compliant sourcing.
Supply support for HS1GFS 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 management and industrial markets since 1979.
The HS1GFS belongs to TSC's HS1xFS fast recovery rectifier family, engineered specifically for high-efficiency, high-frequency switching power supplies where low VF, fast trr, and robust thermal performance are critical.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for HS1GFS?
The HS1GFS has a specified VRRM of 400 V, meaning it reliably blocks up to 400 V of reverse-biased voltage in repetitive duty cycles. This rating is validated per JEDEC standards and ensures safe operation in 230 V AC-derived DC links or 375 V nominal bus applications. Exceeding this voltage risks avalanche breakdown and permanent failure of the HS1GFS.
What is the forward voltage (VF) of HS1GFS at 1 A and 25°C?
The HS1GFS exhibits a typical forward voltage of 0.91 V at 1 A and 25°C, with a maximum of 1.30 V under the same conditions. This value is measured using pulse testing (PW = 0.3 ms) to avoid self-heating effects. At elevated temperatures (125°C), VF drops to 0.76 V typical, reflecting the negative temperature coefficient of silicon PN junctions in the HS1GFS.
Does HS1GFS have a defined reverse recovery time (trr)?
Yes, the HS1GFS has a specified reverse recovery time of ≤50 ns under test conditions of IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This fast recovery characteristic is confirmed in the official Taiwan Semiconductor datasheet (Version C2103) and distinguishes the HS1GFS from general-purpose rectifiers, enabling efficient operation in 100–500 kHz switching converters.
What package type does HS1GFS use, and what are its mounting requirements?
The HS1GFS uses the SOD-128 surface-mount package, with cathode polarity indicated by a band. It requires standard reflow soldering per J-STD-020 (MSL Level 1), and thermal performance assumes mounting on a 5 mm × 5 mm copper pad. No special stencil or paste volume is needed beyond IPC-7527 guidelines; the HS1GFS is fully compatible with automated pick-and-place systems.
Is HS1GFS RoHS and halogen-free compliant?
Yes, the HS1GFS is RoHS compliant and halogen-free per IEC 61249-2-21. Taiwan Semiconductor certifies that all materials used in the HS1GFS - including molding compound, lead frame, and plating - meet these environmental standards. Full compliance documentation, including substance declarations and test reports, is available upon request for the HS1GFS.
HS1GFS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- SOD-128
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 400 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 1 µA @ 400 V
- Capacitance @ Vr, F:
- 17pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-128
- Operating Temperature - Junction:
- -55°C ~ 150°C
HS1GFS FAQ
1.How can I place an order for HS1GFS through Aetrix?
Please submit a Request for Quotation (RFQ) for HS1GFS 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 HS1GFS reliable?
The price and inventory of HS1GFS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HS1GFS is usually 5 days.
3.What payment methods are accepted for HS1GFS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HS1GFS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HS1GFS?
HS1GFS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HS1GFS 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 HS1GFS?
For technical support, including HS1GFS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HS1GFS requirements.
6.How does Aetrix verify that HS1GFS is sourced from the original manufacturer or authorized distributors?
All HS1GFS 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 HS1GFS meets industry standards.
7.What is the process for return or replacement of HS1GFS?
All HS1GFS units undergo pre-shipment inspection (PSI). If there is an issue with HS1GFS, 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 HS1GFS part is unused and in its original packaging.
Return procedure for HS1GFS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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