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Taiwan Semiconductor Corporation UF4001 R0G
- Part No.:
- UF4001 R0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
UF4001 R0G.pdf
- Description:
- DIODE GEN PURP 50V 1A DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:6,544
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Product details
Overview
UF4001 R0G from Taiwan Semiconductor is a 1A, 50V ultrafast recovery rectifier diode in DO-204AL (DO-41) package, featuring 50 ns reverse recovery time, 1.0 V forward voltage at 1 A, and 30 A surge current capability. It serves as a freewheeling or output rectifier in high-frequency switching power supplies.
For engineers reviewing the UF4001 R0G datasheet, UF4001 R0G pinout, UF4001 R0G application, or UF4001 R0G equivalent, key selection criteria include repetitive peak reverse voltage (50 V), thermal resistance (15 °C/W junction-to-lead), RoHS/halogen-free compliance, AEC-Q101 qualification availability, and DO-41 mechanical compatibility.
Technical Context
This single-die silicon rectifier uses glass passivated junction technology to ensure stable operation up to 150 °C junction temperature and robust high-temperature switching performance. Its ultrafast recovery (trr ≤ 50 ns) minimizes switching losses in DC–DC converters operating above 20 kHz.
The device exhibits low forward voltage (VF = 1.0 V @ IF = 1 A, TJ = 25 °C) and low reverse leakage (IR ≤ 5 µA @ VR = 50 V, TJ = 25 °C), enabling high efficiency in compact, thermally constrained power stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum repetitive reverse blocking voltage; defines safe DC/peak AC voltage limit across cathode–anode |
| IF | 1 A - Continuous average forward current rating at TA = 75 °C; determines steady-state power handling |
| trr | 50 ns - Measured under IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A; enables efficient operation in >100 kHz SMPS topologies |
| VF | 1.0 V @ 1 A, 25 °C - Forward conduction loss directly impacts conduction efficiency and thermal design margin |
| RθJL | 15 °C/W - Junction-to-lead thermal resistance; supports direct PCB copper pad heat sinking for 1 A continuous load |
| IR | 5 µA @ 50 V, 25 °C - Low leakage preserves efficiency in high-impedance bias or hold-up circuits |
Pinout & Package
Package: DO-204AL (DO-41), axial lead, glass-passivated silicon die, cathode indicated by band. Weight: 0.330 g. Leads are pure tin plated, J-STD-002 solderable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck converter); must handle 30 A surge peaks |
| Cathode | Forward current exit / reverse blocking terminal | Connected to output rail or ground return; marked with band; sustains 50 V reverse bias continuously |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables reliable operation at TJ = 150 °C and prevents moisture-induced degradation in humid environments |
| Ultrafast 50 ns recovery | Reduces switching loss and EMI generation in high-frequency flyback and forward converters |
| RoHS and halogen-free | Complies with IEC 61249-2-21; supports environmentally regulated industrial and automotive production |
| 15 °C/W RθJL | Allows direct thermal coupling to copper pour without heatsink for 1 A continuous operation at ambient ≤ 75 °C |
Applications
| DC–DC Converter Output Rectification | Switching Mode Inverter Freewheeling |
|---|---|
Use Scenario: Secondary-side rectification in isolated 12 V → 5 V/3.3 V flyback converters powering microcontrollers and sensors. IC Role / Device Role / Timing Role: Unidirectional current valve converting high-frequency AC from transformer secondary into regulated DC output. Use Value: 1.0 V VF and 50 ns trr minimize conduction + switching losses, improving full-load efficiency by ≥1.2% vs. standard fast recovery diodes. | Use Scenario: Freewheeling path for inductive loads (e.g., solenoids, relay coils) driven by MOSFETs in 24 V industrial control modules. IC Role / Device Role / Timing Role: Provides low-loss current recirculation path during MOSFET turn-off to suppress voltage spikes. Use Value: 30 A IFSM withstands inductive kick energy; 50 ns trr limits voltage overshoot to <120 V, reducing snubber component stress. |
| AC–DC Adapter Secondary Rectifier | Automotive Body Control Module Power Supply |
Use Scenario: Output rectification in 5 W–15 W wall adapters using quasi-resonant flyback controllers. IC Role / Device Role / Timing Role: Converts high-frequency transformer output to low-voltage DC for USB charging or logic rails. Use Value: DO-41 package fits standard through-hole footprints; 1.0 V VF maintains >82% efficiency at 1 A load with minimal heatsinking. | Use Scenario: Input rectification and reverse polarity protection in 12 V battery-fed BCM power supplies. IC Role / Device Role / Timing Role: Blocks reverse battery connection while conducting forward current during normal operation. Use Value: AEC-Q101 qualified variants available; 150 °C TJ max ensures reliability under hood temperatures up to 125 °C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultrafast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R04 (STMicroelectronics) | Same 1 A / 400 V rating but higher VF (1.3 V), longer trr (60 ns), TO-220AC package | Requires PCB footprint change and thermal pad layout; suited for higher-power, forced-air-cooled designs | Select when higher voltage margin (400 V) and higher surge tolerance (50 A) are required over UF4001 R0G's 50 V rating |
| 1N4933 (ON Semiconductor) | 1 A / 200 V, trr = 50 ns, VF = 1.2 V, same DO-41 package and cathode-band marking | Compatible footprint and assembly process; slightly higher conduction loss reduces efficiency by ~0.2 W at 1 A | Choose for legacy design continuity where 200 V VRRM suffices and UF4001 R0G's 50 V rating is excessive |
Compared with STTH1R04 and 1N4933, UF4001 R0G delivers lowest forward loss (1.0 V) in its voltage class and optimal thermal resistance (15 °C/W) for compact DO-41 layouts-making it preferred for space-constrained, high-efficiency 50 V systems.
Availability
UF4001 R0G is available at Aetrix Electronics and suitable for DC–DC converters, switching mode inverters, and freewheeling applications requiring stable component supply, consistent DO-41 packaging, and AEC-Q101-qualified variants.
Supply support for UF4001 R0G 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 industrial, computing, and automotive markets since 1979.
The UF4001 R0G belongs to TSC's ultrafast rectifier family designed specifically for high-frequency power conversion-emphasizing low VF, fast trr, and rugged thermal performance in standard axial packages.
FAQ
What is the maximum junction temperature rating for UF4001 R0G?
The UF4001 R0G has a maximum junction temperature (TJ MAX) of +150 °C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet P2104. This allows reliable operation in high-ambient environments such as enclosed power supplies or under-hood automotive locations when derated per the forward current derating curve. Thermal design must maintain TJ ≤ 150 °C using the specified RθJL = 15 °C/W.
Is UF4001 R0G RoHS and halogen-free compliant?
Yes, UF4001 R0G is RoHS compliant and halogen-free in accordance with IEC 61249-2-21, as confirmed in the "Features" section of the Taiwan Semiconductor datasheet P2104. The molding compound meets UL 94V-0 flammability rating, and the pure tin-plated leads satisfy J-STD-002 solderability requirements-ensuring environmental compliance for global industrial and consumer shipments.
What does the "R0G" suffix indicate in UF4001 R0G?
The "R0G" suffix in UF4001 R0G denotes Taiwan Semiconductor's standard green compound (halogen-free) variant in DO-204AL (DO-41) package, supplied in tape-and-reel format (5,000 pcs/reel). It is not AEC-Q101 qualified-unlike versions marked with "H" (e.g., UF4001H). The "G" confirms halogen-free compliance, and "R0" specifies reel packaging per ordering code conventions in datasheet P2104.
How does UF4001 R0G compare to UF4004 in terms of electrical performance?
UF4001 R0G and UF4004 share identical forward characteristics (VF ≤ 1.0 V @ 1 A, trr ≤ 50 ns) and thermal specs (RθJL = 15 °C/W), but differ in VRRM: UF4001 R0G is rated for 50 V, while UF4004 is rated for 400 V. Both use the same DO-41 package and glass passivation. Select UF4001 R0G only where 50 V reverse blocking suffices-avoid substituting into 400 V circuits due to catastrophic failure risk.
Can UF4001 R0G be used as a direct replacement for 1N4001 in existing designs?
No-UF4001 R0G is not a drop-in replacement for 1N4001. While both are DO-41 rectifiers rated at 1 A, UF4001 R0G is an ultrafast diode (trr ≤ 50 ns) versus 1N4001's standard recovery (>30 µs). Substituting UF4001 R0G may cause EMI or ringing in low-frequency linear supplies designed for slow recovery. Use only in high-frequency switching applications where fast recovery is required and layout parasitics are controlled.
UF4001 R0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 50 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 @ 50 V
- Capacitance @ Vr, F:
- 17pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
- Operating Temperature - Junction:
- -55°C ~ 150°C
UF4001 R0G FAQ
1.How can I place an order for UF4001 R0G through Aetrix?
Please submit a Request for Quotation (RFQ) for UF4001 R0G 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 UF4001 R0G reliable?
The price and inventory of UF4001 R0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UF4001 R0G is usually 5 days.
3.What payment methods are accepted for UF4001 R0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UF4001 R0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UF4001 R0G?
UF4001 R0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UF4001 R0G 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 UF4001 R0G?
For technical support, including UF4001 R0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UF4001 R0G requirements.
6.How does Aetrix verify that UF4001 R0G is sourced from the original manufacturer or authorized distributors?
All UF4001 R0G 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 UF4001 R0G meets industry standards.
7.What is the process for return or replacement of UF4001 R0G?
All UF4001 R0G units undergo pre-shipment inspection (PSI). If there is an issue with UF4001 R0G, 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 UF4001 R0G part is unused and in its original packaging.
Return procedure for UF4001 R0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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