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Diodes Incorporated UG2002-T
- Part No.:
- UG2002-T
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
UG2002-T.pdf
- Description:
- DIODE GEN PURP 100V 2A DO15
- Quantity:
- Payment:
- Shipping:
Inventory:8,899
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Product details
Overview
UG2002-T from Diodes Incorporated is a 100 V, 2.0 A ultra-fast glass passivated rectifier diode in DO-15 package, optimized for high-efficiency AC/DC conversion in offline power supplies and switch-mode power adapters. It delivers 50 ns reverse recovery time, 1.3 V forward voltage at 2.0 A, and 60 A non-repetitive surge capability.
For engineers reviewing the UG2002-T datasheet, UG2002-T pinout, UG2002-T application, or UG2002-T equivalent, key selection criteria include peak repetitive reverse voltage (100 V), average rectified current rating at 55°C (2.0 A), thermal resistance (50 °C/W), reverse recovery time (50 ns), and DO-15 mechanical compatibility.
Technical Context
This ultra-fast rectifier uses glass passivated die construction to achieve low reverse leakage (5.0 μA at 25°C) and stable switching performance across temperature. Its 50 ns trr and 1.3 V VF at 2.0 A support high-frequency operation in flyback and forward converters up to several hundred kHz.
The device is rated for 60 A single-half-sine surge (8.3 ms) and exhibits 15 pF typical junction capacitance at 4.0 V reverse bias and 1.0 MHz - enabling low EMI in compact power stages. Polarity is marked by cathode band; leads are tin-plated and solderable per MIL-STD-202, Method 208.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Maximum peak repetitive reverse voltage; defines safe blocking capability in 120 VAC input circuits. |
| IO @ TA = 55°C | 2.0 A - Continuous DC output current rating under derated ambient; requires heatsinking above 55°C. |
| VF @ IF = 2.0A | 1.3 V - Forward voltage drop determining conduction loss and thermal dissipation in rectification path. |
| trr | 50 ns - Reverse recovery time; enables efficient operation in 100–500 kHz SMPS without excessive switching loss. |
| IFSM | 60 A - Non-repetitive surge rating; withstands inrush currents during cold-start of AC/DC power supplies. |
| RθJA | 50 °C/W - Junction-to-ambient thermal resistance; used to calculate junction temperature rise with PCB pad area and airflow. |
| IR @ 25°C | 5.0 μA - Reverse leakage current at rated DC blocking voltage; impacts standby power in no-load conditions. |
Pinout & Package
UG2002-T is housed in a DO-15 molded plastic case (UL 94V-0), with axial leads and cathode polarity indicated by a band. The package weighs approximately 0.4 g and complies with moisture sensitivity level 1 per J-STD-020D.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input terminal for forward conduction | Connected to AC source or transformer secondary; carries full load current during positive half-cycle. |
| Cathode | Output terminal for forward conduction | Connected to output capacitor or filter stage; polarity marking ensures correct orientation in bridge or half-wave layout. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die | Enables stable reverse characteristics and long-term reliability under humidity and thermal cycling stress. |
| Ultra-fast switching (50 ns trr) | Reduces switching losses in high-frequency SMPS, improving efficiency over standard rectifiers (e.g., 1N400x). |
| 60 A surge rating | Supports robust inrush handling in universal-input offline adapters without external fusing or current limiting. |
| RoHS-compliant tin-plated leads | Ensures lead-free solder compatibility and meets environmental compliance requirements for industrial and consumer products. |
Applications
| Offline AC/DC Adapters | Switch-Mode Power Supplies |
|---|---|
Use Scenario: Universal-input (90–264 VAC) wall adapters for consumer electronics. IC Role / Device Role / Timing Role: Output rectifier in flyback topology, converting high-frequency transformer secondary voltage to regulated DC. Use Value: 50 ns trr minimizes switching loss at 65–130 kHz, while 2.0 A IO supports 10–24 W output power levels. | Use Scenario: Industrial 24 V DC power modules with wide input range and high reliability demand. IC Role / Device Role / Timing Role: Primary-side rectifier in forward converter, handling continuous 2.0 A load with minimal thermal rise. Use Value: 50 °C/W RθJA allows operation at full current with minimal heatsink, reducing BOM cost and footprint. |
| LED Driver Circuits | Uninterruptible Power Supplies |
Use Scenario: Constant-current LED drivers for commercial lighting with AC mains input. IC Role / Device Role / Timing Role: Bridge rectifier leg in isolated driver front-end, delivering ripple-suppressed DC bus. Use Value: Low 5.0 μA IR at 25°C reduces no-load power consumption, aiding Energy Star compliance. | Use Scenario: Line-interactive UPS systems requiring fast-response rectification during battery backup transitions. IC Role / Device Role / Timing Role: Input rectifier in dual-conversion topology, handling transient surges and harmonic-rich utility waveforms. Use Value: 60 A IFSM withstands generator start-up spikes and lightning-induced line transients without failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH2R02 | Same 100 V VRRM, 2.0 A IO, but TO-220AC package; higher thermal mass and lower RθJA (30 °C/W). | Preferred where board space permits and higher surge margin or heatsink integration is needed. | Select STTH2R02 for higher-power designs (>30 W) requiring better thermal management. |
| ES2D | DO-214AA (SMA) package; identical 100 V/2.0 A rating, 50 ns trr, but 0.85 V VF (lower conduction loss). | Better suited for surface-mount layouts and automated assembly; not axial-leaded. | Choose ES2D when SMT process flow, smaller footprint, or lower VF-driven efficiency is prioritized. |
Compared with STTH2R02 and ES2D, UG2002-T offers axial DO-15 compatibility for through-hole prototyping and legacy designs, balanced VF/trr trade-off, and lowest unit cost in tape-and-reel volume, though it lacks the thermal headroom of TO-220 or SMT density of SMA.
Availability
UG2002-T is available at Aetrix Electronics and suitable for offline AC/DC adapters, switch-mode power supplies, LED driver circuits, and uninterruptible power supplies requiring stable component supply and long-lifecycle support.
Supply support for UG2002-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The UG200x series belongs to Diodes' ultra-fast rectifier product line, engineered specifically for high-efficiency, cost-sensitive AC/DC power conversion in consumer, industrial, and lighting applications.
FAQ
Is UG2002-T recommended for new designs?
No. Diodes Incorporated explicitly marks UG2002-T as "NOT RECOMMENDED FOR NEW DESIGN" in its official datasheet (DS27009 Rev. 5-3). While fully functional and supported for existing production, designers should evaluate modern alternatives such as ES2D or STTH2R02 for new projects due to improved efficiency, packaging, or thermal performance.
What is the maximum operating temperature for UG2002-T?
The UG2002-T has an operating junction temperature range of –55°C to +150°C. Its average rectified current rating is specified at TA = 55°C; derating is required above that ambient, per Figure 1 in DS27009. At 100°C ambient, IO drops to ~1.2 A based on the published derating curve.
Does UG2002-T meet RoHS requirements?
Yes. UG2002-T features lead-free finish and is RoHS compliant per EU Directive 2002/95/EC, with all applicable exemptions applied. Its tin-plated leads are solderable per MIL-STD-202, Method 208, and the device carries no hazardous substance restrictions beyond those permitted under RoHS Annex III.
Can UG2002-T replace UG2001-T or UG2003-T in a circuit?
Only with electrical verification. UG2002-T has 100 V VRRM, while UG2001-T is rated for 50 V and UG2003-T for 200 V. Substitution may cause overvoltage failure (UG2001-T) or excessive conduction loss (UG2003-T). Pinout and package are identical, but voltage rating must match system requirements.
UG2002-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-204AC, DO-15, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 100 V
- Capacitance @ Vr, F:
- 30pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-15
- Operating Temperature - Junction:
- -55°C ~ 150°C
UG2002-T FAQ
1.How can I place an order for UG2002-T through Aetrix?
Please submit a Request for Quotation (RFQ) for UG2002-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 UG2002-T reliable?
The price and inventory of UG2002-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UG2002-T is usually 5 days.
3.What payment methods are accepted for UG2002-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UG2002-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UG2002-T?
UG2002-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UG2002-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 UG2002-T?
For technical support, including UG2002-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UG2002-T requirements.
6.How does Aetrix verify that UG2002-T is sourced from the original manufacturer or authorized distributors?
All UG2002-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 UG2002-T meets industry standards.
7.What is the process for return or replacement of UG2002-T?
All UG2002-T units undergo pre-shipment inspection (PSI). If there is an issue with UG2002-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 UG2002-T part is unused and in its original packaging.
Return procedure for UG2002-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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