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Taiwan Semiconductor Corporation HS1G
- Part No.:
- HS1G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
HS1G.pdf
- Description:
- DIODE GEN PURP 400V 1A DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:10,882
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Product details
Overview
HS1G from Taiwan Semiconductor is a 400 V repetitive peak reverse voltage, 1 A average forward current, surface-mount fast recovery rectifier in DO-214AC (SMA) package, featuring 1.3 V max forward voltage at 1 A and 50 ns max reverse recovery time-used in DC-DC converters and snubber circuits.
For engineers reviewing the HS1G datasheet, HS1G pinout, HS1G application, or HS1G equivalent, key selection criteria include its 400 V VRRM, 30 A IFSM, 15 °C/W junction-to-lead thermal resistance, and DO-214AC mechanical compatibility with automated SMT assembly.
Technical Context
The HS1G is a single-die, glass-passivated silicon junction rectifier optimized for high-efficiency switching applications. Its 50 ns reverse recovery time and low 1.3 V forward voltage drop at 1 A support reduced conduction and switching losses in high-frequency power supplies.
Thermally, it delivers 15 °C/W junction-to-lead resistance when mounted on a 5 mm × 5 mm copper pad, enabling reliable operation up to 150 °C junction temperature. The device meets JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - maximum repetitive reverse blocking voltage, defines usable input voltage range in flyback or boost topologies |
| IF | 1 A - continuous average forward current rating at 75 °C case temperature, sets steady-state power handling capability |
| VF (max) | 1.3 V @ 1 A, 25 °C - directly determines conduction loss and thermal rise in high-duty-cycle operation |
| trr (max) | 50 ns - enables efficient operation up to ~2 MHz switching frequencies with minimal reverse recovery loss |
| IFSM | 30 A - peak non-repetitive surge current tolerance, supports inrush and transient overload resilience |
| RθJL | 15 °C/W - quantifies thermal path efficiency from junction to PCB pad, critical for thermal design margining |
| CJ | 20 pF @ 1 MHz, 4 V - influences high-frequency noise coupling and EMI filter design in snubber networks |
Pinout & Package
Package: DO-214AC (SMA), surface-mount plastic case with cathode band polarity marking; matte tin-plated leads, UL 94V-0 rated molding compound, 0.060 g typical weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck converter); requires thermal relief pad for solderability |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; ties to output rail or ground return; must maintain clearance per 400 V working voltage |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable leakage performance (<5 µA @ 25 °C) and long-term reliability under humidity and bias stress |
| Fast recovery (50 ns) | Reduces switching loss and EMI generation in 100 kHz–1 MHz SMPS designs compared to standard rectifiers |
| DO-214AC (SMA) package | Supports automated pick-and-place and reflow soldering; compatible with IPC-7351B footprint standards |
| J-STD-020 Level 1 moisture sensitivity | Eliminates bake requirement prior to reflow, reducing manufacturing cost and process complexity |
| RoHS & halogen-free compliance | Meets EU Directive 2011/65/EU and IEC 61249-2-21, supporting green electronics certification |
Applications
| DC-DC Converter | Snubber Circuit |
|---|---|
Use Scenario: Secondary-side rectification in isolated flyback or forward converters operating at 100–500 kHz. IC Role / Device Role / Timing Role: Unidirectional current steering and energy transfer during transformer reset phase. Use Value: 50 ns trr minimizes voltage overshoot and reduces clamp capacitor size versus slower rectifiers. | Use Scenario: RCD snubber across MOSFET drain-source in hard-switched PFC or LLC stages. IC Role / Device Role / Timing Role: Fast clamping of inductive voltage spikes during turn-off transitions. Use Value: Low CJ (20 pF) limits capacitive loading on gate driver while maintaining 400 V blocking margin. |
| Lighting Application | Freewheeling Diode |
Use Scenario: Output rectification in LED driver IC-based constant-current supplies for commercial lighting. IC Role / Device Role / Timing Role: Maintains LED current continuity during PWM dimming intervals. Use Value: 1.3 V VF ensures <1.3 W conduction loss at 1 A, easing thermal management in enclosed fixtures. | Use Scenario: Inductor freewheeling path in buck regulators powering microcontrollers or sensors. IC Role / Device Role / Timing Role: Provides low-impedance return path during high-side switch off-time. Use Value: 30 A IFSM withstands inductor current surges during startup or load transients without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R04 | 400 V VRRM, 1.05 V VF (typ), 50 ns trr, same DO-214AC package | Slightly lower forward drop improves efficiency at light loads; identical thermal specs | Preferred where <100 mV VF reduction justifies sourcing from STMicroelectronics |
| MBR140 | 40 V VRRM, Schottky structure, 0.55 V VF, no reverse recovery | Not suitable for 400 V blocking; only viable in low-voltage secondary-side or synchronous rectification | Select only if system reverse voltage ≤40 V and ultra-low VF is prioritized over blocking capability |
Compared with STTH1R04 and MBR140, the HS1G provides optimal balance of 400 V blocking, 1.3 V forward drop, and 50 ns recovery for mid-voltage SMPS-whereas STTH1R04 offers marginal VF advantage and MBR140 fails to meet required reverse voltage rating.
Availability
HS1G is available at Aetrix Electronics and suitable for DC-DC converters, snubber circuits, lighting applications, and freewheeling diode roles requiring stable component supply and consistent DO-214AC packaging.
Supply support for HS1G 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 electronics markets since 1979.
The HS1G belongs to TSC's HS1x fast recovery rectifier family, engineered specifically for high-efficiency, surface-mount switching power supplies where thermal robustness and repeatable SMT yield are critical.
FAQ
What is the maximum junction temperature rating for the HS1G?
The HS1G has a maximum junction temperature (TJ) rating of +150 °C, verified per absolute maximum ratings table. This allows operation in high-ambient environments such as enclosed LED drivers or industrial power supplies. Derating curves confirm 1 A average forward current is sustainable up to 75 °C case temperature. Thermal design must account for RθJL = 15 °C/W to ensure the HS1G junction stays within limit under full load.
Does the HS1G have a specified reverse recovery time, and how is it measured?
Yes, the HS1G has a maximum 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 the electrical specifications table. This parameter is critical for minimizing switching loss in high-frequency converters. The test circuit and waveform definitions are detailed in Figure 10 of the HS1G datasheet, confirming measurement validity for design simulation inputs.
Is the HS1G RoHS and halogen-free compliant?
Yes, the HS1G is fully RoHS compliant per EU Directive 2011/65/EU and halogen-free per IEC 61249-2-21. These attributes are explicitly stated in the FEATURES section of the official datasheet. The device uses matte tin-plated leads and UL 94V-0 compliant molding compound, making it suitable for environmentally regulated end equipment including commercial lighting and industrial controls.
What is the marking code printed on the HS1G device body?
The HS1G is marked with "HS1G" on its molded plastic body, as confirmed in the ABSOLUTE MAXIMUM RATINGS table under "Marking code on the device." This laser-marked identifier is located adjacent to the cathode band and is legible under 20× magnification. No date code, factory code, or green compound indicator (e.g., "G") is part of the primary device marking for HS1G.
Can the HS1G be used as a direct replacement for the HS1F in an existing design?
No-the HS1G is not a direct replacement for HS1F due to differing VRRM (400 V vs. 300 V) and forward voltage (1.3 V vs. 1.0 V max). While both share DO-214AC packaging and pinout, substituting HS1G for HS1F increases reverse voltage margin but raises conduction loss. Design validation-including thermal and voltage stress analysis-is required before interchange, especially in safety-critical or tightly derated layouts.
HS1G 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):
- 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:
- 5 µA @ 400 V
- Capacitance @ Vr, F:
- 15pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
- Operating Temperature - Junction:
- -55°C ~ 150°C
HS1G FAQ
1.How can I place an order for HS1G through Aetrix?
Please submit a Request for Quotation (RFQ) for HS1G 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 HS1G reliable?
The price and inventory of HS1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HS1G is usually 5 days.
3.What payment methods are accepted for HS1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HS1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HS1G?
HS1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HS1G 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 HS1G?
For technical support, including HS1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HS1G requirements.
6.How does Aetrix verify that HS1G is sourced from the original manufacturer or authorized distributors?
All HS1G 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 HS1G meets industry standards.
7.What is the process for return or replacement of HS1G?
All HS1G units undergo pre-shipment inspection (PSI). If there is an issue with HS1G, 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 HS1G part is unused and in its original packaging.
Return procedure for HS1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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