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Diodes Incorporated UG2003-T
- Part No.:
- UG2003-T
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
UG2003-T.pdf
- Description:
- DIODE GEN PURP 200V 2A DO15
- Quantity:
- Payment:
- Shipping:
Inventory:9,510
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Product details
Overview
UG2003-T from Diodes Incorporated is a 2.0A ultra-fast glass passivated rectifier diode with 200V peak repetitive reverse voltage, 50°C/W thermal resistance, and 50ns reverse recovery time, used in AC/DC input stage rectification for switch-mode power supplies and offline adapters.
For engineers reviewing the UG2003-T datasheet, UG2003-T pinout, UG2003-T application, or UG2003-T equivalent, key selection criteria include forward voltage at 2.0A (1.7V), peak surge current rating (60A), reverse leakage at 100°C (100μA), DO-15 package thermal performance, and compatibility with 60Hz half-wave rectification under inductive loads.
Technical Context
This device operates as a single-phase, half-wave rectifier with glass passivated junction construction enabling ultra-fast switching and low reverse recovery charge. Its 200V VRRM rating supports universal-input SMPS front-end designs up to 265VAC line voltage.
The DO-15 package provides standardized leaded mounting with 94V-0 flammability rating and 0.4g mass, while the cathode band polarity marking and tin-plated leads ensure reliable soldering per MIL-STD-202 Method 208.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Maximum repetitive reverse voltage before breakdown; sets safe operating margin for 265VAC input rectification. |
| IO @ TA=55°C | 2.0 A - Average forward current derated for ambient temperature; defines continuous output capability in enclosed power supplies. |
| VF @ IF=2.0A | 1.7 V - Forward voltage drop at rated current; directly impacts conduction loss and thermal design in high-efficiency converters. |
| trr | 50 ns - Reverse recovery time measured at IF=0.5A, IR=1.0A; enables operation in 100kHz+ switching topologies with low switching loss. |
| IFSM | 60 A - Non-repetitive surge current rating for 8.3ms half-sine; ensures robustness against line transients and cold-start inrush. |
| RθJA | 50 °C/W - Junction-to-ambient thermal resistance; determines heatsinking requirements when mounted on PCB without copper pour. |
| IR @ 100°C | 100 μA - Reverse leakage at elevated temperature; critical for standby power budget in energy-efficient adapters. |
Pinout & Package
UG2003-T uses the industry-standard DO-15 axial-leaded package with cathode band marking. Leads are tin-plated and solderable per MIL-STD-202 Method 208. Polarity is unambiguous: banded end is cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | AC Input Connection | Accepts incoming AC waveform; must withstand full RMS voltage swing and surge currents during conduction. |
| Cathode | DC Output Node | Delivers rectified positive half-cycle to bulk capacitor; carries full average load current and ripple current. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die | Enables stable long-term reliability and moisture resistance in humid environments without hermetic sealing. |
| Ultra-fast switching (50ns trr) | Reduces reverse recovery loss in high-frequency SMPS, improving efficiency over standard rectifiers like 1N4007. |
| 60A IFSM surge rating | Withstands repeated line surges and cold-start inrush without degradation, eliminating need for external fusing in many designs. |
| RoHS-compliant lead finish | Tin-plated leads meet EU Directive 2002/95/EC and support lead-free reflow and wave soldering processes. |
Applications
| AC/DC Adapter Input Stage | Offline LED Driver Rectification |
|---|---|
Use Scenario: Universal-input (90–265VAC) wall adapter converting AC to DC for USB charging or low-voltage logic rails. IC Role / Device Role / Timing Role: Primary-side rectifier converting AC line to pulsating DC prior to bulk capacitor filtering and DC/DC regulation. Use Value: 200V VRRM provides 2× safety margin over 265VAC peak (375V), while 50ns trr minimizes switching loss at 65kHz PWM frequency. | Use Scenario: Constant-current LED driver for commercial lighting, operating directly from mains with passive PFC. IC Role / Device Role / Timing Role: Bridge or half-wave rectifier delivering unidirectional current to LED string and smoothing capacitor. Use Value: 2.0A IO rating supports >15W output; low 100μA IR at 100°C prevents thermal runaway in enclosed luminaires. |
| Industrial Control Power Supply | Appliance Mainboard Auxiliary Supply |
Use Scenario: 24V auxiliary supply in PLC I/O modules, powered from 120/240VAC control bus. IC Role / Device Role / Timing Role: Input rectifier feeding linear regulator or buck converter generating isolated logic supply. Use Value: DO-15 package allows through-hole mounting on industrial PCBs; 50°C/W RθJA enables natural convection cooling without heatsink. | Use Scenario: Standby power rail generation in washing machines, refrigerators, or HVAC controllers. IC Role / Device Role / Timing Role: Mains-fed rectifier supplying 5V/3.3V logic rail via transformerless capacitive dropper or flyback. Use Value: 1.7V VF at 2.0A balances conduction loss vs. cost; RoHS compliance meets global appliance regulatory requirements. |
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 200V VRRM, 2A IO, but TO-220AC package; higher RθJA (35°C/W case-to-ambient, but requires heatsink mounting). | Designed for higher-power applications requiring forced-air or heatsink cooling; not direct drop-in for DO-15 footprint. | Select when thermal load exceeds 1.5W and PCB space allows TO-220 mounting with heatsink. |
| ES2D | DO-214AA (SMA) surface-mount package; same 200V/2A rating, but VF = 1.7V and trr = 35ns - faster but lower surge rating (30A IFSM). | Suitable for compact SMT designs where board area is constrained and surge immunity is secondary to speed. | Select for space-constrained consumer electronics where 35ns trr improves light-load efficiency and SMT assembly is preferred. |
Compared with STTH2R02 and ES2D, UG2003-T offers optimal balance of axial-leaded manufacturability, 60A surge robustness, and thermal performance in open-frame or vented enclosures - making it preferred for cost-sensitive, medium-power AC/DC conversion where through-hole assembly remains standard.
Availability
UG2003-T is available at Aetrix Electronics and suitable for AC/DC adapters, offline LED drivers, industrial control power supplies, and appliance auxiliary supplies requiring stable component supply and long-lifecycle support.
Supply support for UG2003-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 and manufacturing operations across Asia and the Americas.
The UG200x series belongs to Diodes' ultra-fast rectifier product line, engineered specifically for high-efficiency, cost-optimized AC/DC front-end rectification in consumer and industrial power supplies.
FAQ
Is UG2003-T suitable for use in bridge rectifier configurations?
Yes - UG2003-T can be used in single-phase full-wave bridge rectifiers. Four devices provide 200V PIV per diode, supporting up to 141VAC RMS input. Its 60A IFSM rating handles surge currents typical in bridge applications, and the DO-15 package allows standard axial mounting on power supply PCBs.
What is the maximum ambient temperature for continuous 2.0A operation?
UG2003-T delivers 2.0A average forward current only at TA = 55°C, as specified in the datasheet. At 25°C ambient, derating curves permit ~2.5A, but sustained 2.0A operation above 55°C requires forced air or PCB copper thermal relief to maintain junction temperature below 150°C.
Does UG2003-T have a qualified AEC-Q101 automotive grade variant?
No - UG2003-T is not AEC-Q101 qualified. Diodes Incorporated does not list any automotive-grade version of the UG200x family. For automotive applications, consider the SB220 or SB320 series, which are explicitly qualified to AEC-Q101 and offer comparable 200V/2A ratings in DO-15.
Can UG2003-T replace a 1N4007 in high-frequency power supplies?
Yes - UG2003-T is a functional upgrade over 1N4007 in high-frequency designs due to its 50ns trr versus 30μs, reducing switching loss and EMI. However, its 200V VRRM is lower than 1N4007's 1000V, so replacement is only valid where circuit reverse voltage remains ≤200V, such as post-transformer rectification.
UG2003-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):
- 200 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 @ 200 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
UG2003-T FAQ
1.How can I place an order for UG2003-T through Aetrix?
Please submit a Request for Quotation (RFQ) for UG2003-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 UG2003-T reliable?
The price and inventory of UG2003-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UG2003-T is usually 5 days.
3.What payment methods are accepted for UG2003-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UG2003-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UG2003-T?
UG2003-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UG2003-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 UG2003-T?
For technical support, including UG2003-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UG2003-T requirements.
6.How does Aetrix verify that UG2003-T is sourced from the original manufacturer or authorized distributors?
All UG2003-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 UG2003-T meets industry standards.
7.What is the process for return or replacement of UG2003-T?
All UG2003-T units undergo pre-shipment inspection (PSI). If there is an issue with UG2003-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 UG2003-T part is unused and in its original packaging.
Return procedure for UG2003-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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