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Diodes Incorporated UG3003-T
- Part No.:
- UG3003-T
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
UG3003-T.pdf
- Description:
- DIODE GEN PURP 200V 3A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:6,019
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Product details
Overview
UG3003-T from Diodes Incorporated is a 3.0A ultra-fast glass passivated rectifier diode rated for 200V peak repetitive reverse voltage, 0.95V forward voltage at 3.0A, and 50ns reverse recovery time, used in high-frequency AC/DC conversion stages of switch-mode power supplies and DC-DC converters.
For engineers reviewing the UG3003-T datasheet, UG3003-T pinout, UG3003-T application, or UG3003-T equivalent, key selection criteria include its DO-201AD package thermal resistance (RθJA = 60°C/W), 125A non-repetitive surge rating, low 5.0μA reverse leakage at 25°C, and compatibility with automated tape-and-reel SMT placement (1.2K/reel, 13-inch).
Technical Context
This ultra-fast rectifier employs glass passivated die construction to achieve tight control of junction capacitance (60pF typical at 1.0MHz/4V) and rapid carrier recombination, enabling efficient operation in 50–500kHz SMPS topologies. Its cathode-band polarity marking and tin-plated leads comply with MIL-STD-202 solderability requirements.
The device operates across –65°C to +150°C junction temperature range and requires lead-to-ambient thermal management per Figure 1 derating curve - maintaining 3.0A average current only up to 55°C ambient when leads are held at ambient at 9.5mm from case.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Repetitive Reverse Voltage | 200 V - defines maximum AC input or transient voltage the diode blocks without breakdown in continuous operation |
| Average Forward Current @ TA=55°C | 3.0 A - maximum sustained DC output current deliverable with proper PCB copper area and ambient cooling |
| Forward Voltage @ IF=3.0A | 0.95 V - determines conduction loss (2.85W at 3A), directly impacting thermal design and efficiency |
| Reverse Recovery Time | 50 ns - enables use in high-frequency switching circuits without excessive switching loss or EMI generation |
| Surge Current (8.3ms) | 125 A - withstands inrush and fault transients in offline power supplies without failure |
| Reverse Leakage @ 25°C | 5.0 μA - ensures minimal standby power loss and stable biasing in high-impedance circuits |
| Thermal Resistance RθJA | 60 °C/W - specifies junction-to-ambient temperature rise per watt under standard JEDEC test conditions |
Pinout & Package
UG3003-T is housed in a DO-201AD molded plastic package (UL 94V-0 rated), with axial leads, cathode band marking, and tin-plated terminals. The device has two terminals: anode and cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Positive input terminal for forward conduction | Connected to AC source or switching node; must handle full surge current and thermal stress |
| Cathode | Negative output terminal; marked with band | Routes rectified DC to filter capacitor; polarity-sensitive for correct circuit operation |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die | Enables stable electrical parameters over temperature and humidity; eliminates need for hermetic sealing |
| Ultra-fast switching (50ns trr) | Reduces switching losses in 100–500kHz converters, improving efficiency vs. standard recovery diodes |
| 125A surge rating | Supports robust inrush handling in universal-input AC/DC adapters without external fusing |
| Low 5.0μA IR at 25°C | Minimizes no-load power draw in energy-efficient standby modes (e.g., Energy Star Level VI) |
| DO-201AD package with tin leads | Enables automated tape-and-reel assembly and complies with RoHS while maintaining legacy footprint compatibility |
Applications
| AC/DC Adapter Input Stage | DC-DC Converter Output Rectification |
|---|---|
Use Scenario: Universal-input (90–264VAC) offline flyback adapter supplying 5–12V/2–3A to consumer electronics. IC Role / Device Role / Timing Role: Primary-side ultra-fast rectifier converting high-frequency transformer secondary AC to DC. Use Value: 50ns trr and 0.95V VF reduce switching loss and heat generation, allowing compact heatsink-free designs. |
Use Scenario: Secondary-side synchronous or diode-rectified 48V-to-12V isolated buck-derived converter in telecom power modules. IC Role / Device Role / Timing Role: High-efficiency freewheeling rectifier in discontinuous conduction mode (DCM) operation. Use Value: Low IR (5.0μA) prevents output voltage drift during light-load regulation; DO-201AD fits standard through-hole footprints. |
| Industrial Motor Drive Snubber | LED Driver Bridge Configuration |
Use Scenario: RC snubber network across IGBTs in 3-phase 400VAC motor inverters operating at 8–16kHz PWM frequency. IC Role / Device Role / Timing Role: Fast-recovery clamp diode absorbing inductive kickback energy during IGBT turn-off. Use Value: 125A IFSM withstands repeated commutation surges; 50ns trr ensures clean voltage clamping without oscillation. |
Use Scenario: Single-phase bridge rectifier feeding constant-current LED driver ICs in outdoor streetlight systems. IC Role / Device Role / Timing Role: One leg of full-wave bridge converting 120/230VAC line to unregulated DC bus. Use Value: Glass passivation ensures long-term reliability under outdoor thermal cycling (-40°C to +85°C ambient). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH3L02 | Same 200V VRRM and 3A IO, but TO-220AC package (RθJC = 10°C/W vs. DO-201AD's 15°C/W); VF = 0.97V | Requires heatsink mounting; unsuitable for space-constrained SMT or axial layouts | Prefer when board-level thermal management allows discrete heatsinking and higher surge margin is needed |
| ES3D | DO-204AL (SMA) package, lower 3.0A rating at 100°C, VF = 0.87V, trr = 35ns, IR = 10μA at 25°C | Smaller footprint but higher leakage and lower surge rating (60A IFSM) | Choose for cost-sensitive, low-power (<2A avg) applications where 35ns speed justifies trade-off in ruggedness |
Compared with STTH3L02 and ES3D, UG3003-T uniquely balances DO-201AD mechanical compatibility, 125A surge resilience, and 50ns recovery in a RoHS-compliant, tape-and-reel ready format - making it optimal for mid-power industrial and adapter designs requiring field-proven reliability without heatsinks.
Availability
UG3003-T is available at Aetrix Electronics and suitable for AC/DC adapters, industrial motor drive snubbers, LED driver bridges, and DC-DC converter output rectification requiring stable component supply and long-lifecycle support.
Supply support for UG3003-T 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.
UG3003-T belongs to the UG300x ultra-fast rectifier product line, engineered specifically for high-frequency, high-efficiency AC/DC and DC/DC power conversion where fast recovery, low VF, and surge robustness are critical.
FAQ
Is UG3003-T recommended for new designs?
No - Diodes Incorporated explicitly marks UG3003-T as "NOT RECOMMENDED FOR NEW DESIGN" in its official datasheet (DS27010 Rev. 6). It remains available for legacy production and repair, but newer alternatives like the DFLS3200Q or SB3200 are preferred for design-in due to improved efficiency and packaging.
What is the maximum allowable junction temperature for UG3003-T?
The absolute maximum junction temperature is +150°C, and the storage temperature range is identical (–65°C to +150°C). Operation above this limit risks permanent parametric shift or catastrophic failure; thermal design must ensure Tj stays within this bound under worst-case load and ambient conditions.
Can UG3003-T be used in surface-mount applications?
No - UG3003-T uses the axial-leaded DO-201AD package and is not designed for SMT reflow. While tape-and-reel packaging (UG3003-T) supports automated pick-and-place, the leads require through-hole mounting or manual axial insertion followed by wave or selective soldering.
How does UG3003-T's 50ns reverse recovery time compare to standard recovery diodes?
Standard recovery rectifiers typically exhibit trr > 500ns, causing significant switching loss and EMI in high-frequency converters. At 50ns, UG3003-T reduces turn-off energy loss by ~90% versus standard types, enabling cleaner waveforms and higher efficiency in 100kHz+ SMPS designs.
UG3003-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-201AD, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 200 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 950 mV @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 200 V
- Capacitance @ Vr, F:
- 60pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -65°C ~ 150°C
UG3003-T FAQ
1.How can I place an order for UG3003-T through Aetrix?
Please submit a Request for Quotation (RFQ) for UG3003-T 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 UG3003-T reliable?
The price and inventory of UG3003-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UG3003-T is usually 5 days.
3.What payment methods are accepted for UG3003-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UG3003-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UG3003-T?
UG3003-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UG3003-T 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 UG3003-T?
For technical support, including UG3003-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UG3003-T requirements.
6.How does Aetrix verify that UG3003-T is sourced from the original manufacturer or authorized distributors?
All UG3003-T 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 UG3003-T meets industry standards.
7.What is the process for return or replacement of UG3003-T?
All UG3003-T units undergo pre-shipment inspection (PSI). If there is an issue with UG3003-T, 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 UG3003-T part is unused and in its original packaging.
Return procedure for UG3003-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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