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Taiwan Semiconductor Corporation US1DHR3G
- Part No.:
- US1DHR3G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
US1DHR3G.pdf
- Description:
- DIODE GEN PURP 200V 1A DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,939
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Product details
Overview
US1DHR3G from Taiwan Semiconductor is a 200 V, 1 A ultrafast surface-mount silicon rectifier diode in DO-214AC (SMA) package, featuring 50 ns reverse recovery time, 1.0 V typical forward voltage at 1 A, and 30 A peak surge current - used as freewheeling or snubber diode in DC-DC converters and switching inverters.
For engineers reviewing the US1DHR3G datasheet, US1DHR3G pinout, US1DHR3G application, or US1DHR3G equivalent, key selection criteria include repetitive peak reverse voltage (200 V), ultrafast trr (≤50 ns), thermal resistance (RθJA = 75 °C/W), moisture sensitivity level (MSL 1), and RoHS/halogen-free compliance per IEC 61249-2-21.
Technical Context
This device is a single-die, unidirectional, planar passivated silicon junction rectifier optimized for high-frequency switching operation. Its ultrafast recovery (trr ≤ 50 ns) minimizes switching losses in SMPS topologies, while low VF (1.0 V typ. @ 1 A, 25°C) improves conduction efficiency.
The DO-214AC (SMA) package provides robust thermal performance (RθJL = 27 °C/W) and automated placement compatibility. Cathode polarity is marked by a visible band; terminals are matte tin-plated and J-STD-002 solderable.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - maximum repetitive reverse blocking voltage; defines safe operating range in flyback/clamp circuits |
| IF | 1 A continuous - average forward current rating at TL = 75°C; sets baseline conduction capability |
| IFSM | 30 A - non-repetitive surge current (8.3 ms half-sine); supports transient overload in power startup |
| trr | 50 ns max - ultrafast reverse recovery time; reduces switching loss and EMI in ≥100 kHz converters |
| VF | 1.0 V typ. @ 1 A, 25°C - low forward drop improves system efficiency and reduces thermal load |
| RθJA | 75 °C/W - junction-to-ambient thermal resistance; informs heatsinking requirements on standard FR-4 PCB |
| Junction Temp | -55°C to +150°C - operational temperature range; enables use in industrial ambient environments |
Pinout & Package
DO-214AC (SMA) surface-mount package: molded epoxy case meeting UL 94V-0, matte tin-plated leads, cathode indicated by band, weight ≈ 0.060 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck converter freewheel path) |
| Cathode | Forward current exit / reverse blocking terminal | Marked with band; ties to higher-potential rail (e.g., output capacitor positive in boost topology) |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enhances long-term reliability under humidity and thermal cycling; meets MSL 1 per J-STD-020 |
| Ultrafast recovery (trr ≤ 50 ns) | Enables efficient operation in high-frequency DC-DC converters (>200 kHz) with minimal switching loss |
| Low forward voltage (VF = 1.0 V typ.) | Reduces conduction loss by ~15% vs. standard fast rectifiers at 1 A, lowering thermal stress |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS; suitable for environmentally regulated industrial production |
Applications
| DC-DC Converter Freewheeling | Snubber Network Clamping |
|---|---|
Use Scenario: Used in synchronous or asynchronous buck/boost converters to provide low-loss current path during high-side switch off-time. IC Role / Device Role / Timing Role: Freewheeling diode conducting during dead-time; critical for maintaining continuous inductor current. Use Value: 50 ns trr and 1.0 V VF minimize energy loss and heat generation during each switching cycle. | Use Scenario: Placed across MOSFETs or IGBTs in switching inverters to absorb voltage spikes during turn-off. IC Role / Device Role / Timing Role: Clamp diode in RCD snubber network; conducts briefly during voltage overshoot events. Use Value: Fast recovery ensures rapid turn-on to clamp transients before device breakdown, while low VF limits dissipation. |
| Lighting Ballast Circuits | Switching Mode Inverter Output |
Use Scenario: Rectifies high-frequency AC from resonant drivers in LED driver and CFL ballasts. IC Role / Device Role / Timing Role: High-frequency output rectifier; operates at 20–100 kHz with repetitive reverse stress. Use Value: 200 V VRRM and MSL 1 rating ensure stable operation under thermally demanding lamp-start conditions. | Use Scenario: Output rectification stage in isolated DC-AC inverters for solar microinverters or UPS systems. IC Role / Device Role / Timing Role: Unidirectional current valve converting high-frequency transformer secondary AC to DC. Use Value: Low RθJA (75 °C/W) and 150°C TJMAX support sustained conduction in compact, sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultrafast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R02U | VRRM = 200 V, trr = 30 ns, VF = 0.95 V @ 1 A - faster recovery and slightly lower VF | Higher cost; tighter trr tolerance benefits >500 kHz designs | Preferred where minimal switching loss dominates over cost |
| ES1D-E3/57T | VRRM = 200 V, trr = 35 ns, VF = 0.92 V @ 1 A - lower VF and faster trr, but MSL 2 rating | Requires moisture bake prior to reflow if stored >168 hrs | Valid alternative when board assembly process accommodates MSL 2 handling |
Compared with STTH1R02U and ES1D-E3/57T, US1DHR3G offers balanced performance with MSL 1 reliability and industry-standard DO-214AC footprint - ideal for cost-sensitive, high-volume industrial power supplies where 50 ns trr suffices.
Availability
US1DHR3G is available at Aetrix Electronics and suitable for DC-DC converters, lighting ballasts, and switching mode inverters requiring stable component supply, consistent parametric performance, and full RoHS/halogen-free compliance.
Supply support for US1DHR3G 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 industrial, computing, and consumer markets since 1979.
The US1x series was designed specifically for high-efficiency, high-frequency switching power applications - emphasizing ultrafast recovery, low forward drop, and robust surface-mount packaging for automated manufacturing.
FAQ
What is the maximum repetitive peak reverse voltage rating for US1DHR3G?
The US1DHR3G has a maximum repetitive peak reverse voltage (VRRM) of 200 V. This rating defines the highest reverse-biased voltage the diode can block repeatedly without breakdown under normal operating conditions. It is validated per Taiwan Semiconductor's N2102 datasheet and applies across the full operating temperature range (−55°C to +150°C). Designers must ensure circuit peak reverse transients remain below this value with appropriate derating margin.
Does US1DHR3G meet RoHS and halogen-free requirements?
Yes, US1DHR3G is RoHS compliant and halogen-free per IEC 61249-2-21. The molding compound contains no brominated or chlorinated flame retardants, and lead content is below 1000 ppm. This certification is confirmed in the official Taiwan Semiconductor product documentation (Version N2102) and verified through third-party material declarations. US1DHR3G is suitable for export to EU, Japan, and other regulated markets requiring strict environmental compliance.
What is the reverse recovery time (trr) specification for US1DHR3G?
The reverse recovery time (trr) for US1DHR3G is rated at ≤50 ns under test conditions of IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This ultrafast recovery enables efficient operation in high-frequency switching applications such as DC-DC converters above 100 kHz. The value is measured per JEDEC standards and reflects typical performance at TJ = 25°C; actual trr increases slightly at elevated junction temperatures.
What package type does US1DHR3G use, and what are its key mechanical features?
US1DHR3G uses the DO-214AC (SMA) surface-mount package. Key mechanical features include UL 94V-0 rated epoxy molding compound, matte tin-plated leads compliant with J-STD-002 solderability, cathode polarity indicated by a visible band, and a mass of approximately 0.060 g. The package is rated MSL 1 per J-STD-020, meaning it may be stored indefinitely without dry-pack or baking requirements prior to reflow soldering.
What is the maximum junction temperature and thermal resistance of US1DHR3G?
The US1DHR3G has a maximum junction temperature (TJMAX) of +150°C and a junction-to-ambient thermal resistance (RθJA) of 75 °C/W on standard FR-4 PCB with minimum copper area. Its junction-to-lead resistance (RθJL) is 27 °C/W, supporting effective heat transfer to the PCB pad. These values are specified in the N2102 datasheet and assume natural convection cooling; forced airflow or thermal vias will improve actual thermal performance in end equipment.
US1DHR3G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 200 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 @ 200 V
- Capacitance @ Vr, F:
- 15pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
- Operating Temperature - Junction:
- -55°C ~ 150°C
US1DHR3G FAQ
1.How can I place an order for US1DHR3G through Aetrix?
Please submit a Request for Quotation (RFQ) for US1DHR3G 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 US1DHR3G reliable?
The price and inventory of US1DHR3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for US1DHR3G is usually 5 days.
3.What payment methods are accepted for US1DHR3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for US1DHR3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for US1DHR3G?
US1DHR3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your US1DHR3G 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 US1DHR3G?
For technical support, including US1DHR3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your US1DHR3G requirements.
6.How does Aetrix verify that US1DHR3G is sourced from the original manufacturer or authorized distributors?
All US1DHR3G 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 US1DHR3G meets industry standards.
7.What is the process for return or replacement of US1DHR3G?
All US1DHR3G units undergo pre-shipment inspection (PSI). If there is an issue with US1DHR3G, 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 US1DHR3G part is unused and in its original packaging.
Return procedure for US1DHR3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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