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Diodes Incorporated UG1005-T
- Part No.:
- UG1005-T
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
UG1005-T.pdf
- Description:
- DIODE GEN PURP 600V 1A DO41
- Quantity:
- Payment:
- Shipping:
Inventory:9,967
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Product details
Overview
UG1005-T from Diodes Incorporated is a 1.0A ultra-fast glass passivated rectifier diode in DO-41 package, rated for 600V peak repetitive reverse voltage, 1.7V forward voltage at 1.0A, and 50ns reverse recovery time, used in AC/DC input stage rectification of offline switch-mode power supplies.
For engineers reviewing the UG1005-T datasheet, UG1005-T pinout, UG1005-T application, or UG1005-T equivalent, key selection criteria include VRRM=600V, trr=50ns, IFSM=30A surge rating, low IRM=5.0μA at 25°C, and DO-41 thermal resistance RθJA=95°C/W for board-level thermal design.
Technical Context
This device operates as a single-phase, half-wave rectifier under 60Hz resistive or inductive loads, with derating required for capacitive loads (−20% current). Its glass passivated die construction ensures stable junction integrity and low leakage across −65°C to +150°C operating range.
The ultra-fast switching performance stems from controlled carrier lifetime, enabling efficient high-frequency operation up to ~100kHz in flyback and forward converters. Reverse recovery is characterized at IF=0.5A, IR=1.0A, Irr=0.25A per Figure 5 in DS27008 Rev. 4.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - Maximum non-repetitive reverse voltage before breakdown; defines safe AC input voltage ceiling (e.g., 400VAC RMS line). |
| IO @ TA=55°C | 1.0 A - Continuous average forward current at 55°C ambient; requires heatsinking or airflow above this temperature. |
| VFM @ IF=1.0A | 1.7 V - Forward conduction loss at rated DC load; contributes ~1.7W dissipation at full current. |
| trr | 50 ns - Reverse recovery time; limits usable switching frequency and reduces turn-off losses in SMPS. |
| IFSM (8.3ms) | 30 A - Non-repetitive surge capability; withstands inrush currents during cold-start of power supplies. |
| IRM @ 25°C | 5.0 μA - Reverse leakage at rated blocking voltage; critical for low-power standby and high-impedance bias networks. |
| RθJA | 95 °C/W - Junction-to-ambient thermal resistance in standard DO-41 mounting; determines temperature rise under given power dissipation. |
Pinout & Package
Package: DO-41 molded plastic case (UL 94V-0), cathode indicated by band, lead finish tin-plated, weight ≈0.35 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to AC source or transformer secondary; must handle full surge and steady-state current. |
| Cathode | Forward current exit / output node | Feeds bulk capacitor or downstream converter; polarity marking (band) prevents reverse installation. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die | Ensures long-term reliability and stable IRM over temperature and life; eliminates silicon surface degradation. |
| Ultra-fast switching (trr = 50 ns) | Reduces switching losses and EMI generation compared to standard rectifiers in 50–100 kHz SMPS designs. |
| 30A surge rating (8.3ms) | Supports repeated cold-start events without degradation; exceeds typical IEC 61000-4-5 line surge requirements. |
| Low IRM = 5.0 μA @ 25°C | Minimizes standby power loss in no-load or light-load conditions, aiding Energy Star compliance. |
| RoHS-compliant tin-plated leads | Enables lead-free reflow soldering per JEDEC J-STD-020C Level 1 moisture sensitivity classification. |
Applications
| AC/DC Adapter Input Rectification | Industrial Power Supply Front-End |
|---|---|
Use Scenario: 100–240VAC input rectification feeding 100–300μF bulk capacitor in 10–30W wall adapters. IC Role / Device Role / Timing Role: Discrete ultra-fast rectifier handling 50/60Hz line frequency and high dv/dt during zero-crossing. Use Value: 50ns trr minimizes reverse recovery ringing and EMI; 600V VRRM supports universal input with margin. | Use Scenario: Rectifying 230VAC ±10% mains in DIN-rail mounted 60W industrial PSUs with active PFC pre-stage. IC Role / Device Role / Timing Role: Secondary rectifier in auxiliary or control supply winding, delivering isolated +12V/24V bias rails. Use Value: 30A IFSM tolerates transformer inrush; low IRM prevents bias rail drift during high-temperature operation. |
| LED Driver Bulk Rectification | UPS Charger Input Stage |
Use Scenario: Off-line LED driver with passive PFC, converting 230VAC to 30–40VDC for constant-current LED strings. IC Role / Device Role / Timing Role: Primary-side rectifier conducting continuous 1.0A average current with high peak-to-average ratio. Use Value: 1.7V VFM balances conduction loss vs. thermal rise in compact enclosed housings. | Use Scenario: Input rectification in 1kVA line-interactive UPS battery charger, operating continuously at elevated ambient. IC Role / Device Role / Timing Role: Half-wave rectifier in transformer-coupled charging circuit with thermal cycling stress. Use Value: −65°C to +150°C Tj range and glass passivation ensure longevity under thermal cycling and humidity exposure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R06U | VRRM=600V, trr=55ns, VFM=1.7V @ 1A, DO-41, but higher IRM=10μA @ 25°C. | Slightly higher leakage may affect low-power standby; otherwise interchangeable in most 600V rectifier roles. | Prefer UG1005-T where <5μA IRM is required for energy-sensitive designs. |
| ES1J | VRRM=600V, trr=35ns, VFM=1.7V @ 1A, SMA package (smaller footprint, lower RθJA=70°C/W). | SMA enables higher power density but requires re-layout; not drop-in due to different package and thermal path. | Select ES1J only when board space is constrained and thermal management allows SMA mounting. |
Compared with STTH1R06U and ES1J, UG1005-T offers the lowest IRM among DO-41 600V ultra-fast rectifiers and maintains legacy through-hole compatibility without sacrificing surge robustness or thermal margin.
Availability
UG1005-T is available at Aetrix Electronics and suitable for AC/DC adapter input rectification, industrial power supply front-end designs, LED driver bulk rectification, and UPS charger input stages requiring stable component supply and long-term manufacturability.
Supply support for UG1005-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 UG1001–UG1005 series belongs to Diodes' ultra-fast rectifier product line, engineered specifically for high-efficiency, cost-sensitive offline power conversion where fast recovery, low leakage, and surge robustness are prioritized over ultra-low VF.
FAQ
Is UG1005-T suitable for use in new designs?
No - Diodes Incorporated explicitly marks UG1005-T as "NOT RECOMMENDED FOR NEW DESIGN" in DS27008 Rev. 4. It remains available for legacy production and repair, but newer alternatives like ES1J or STTH1R06U offer improved parameters or packaging. Customers initiating new designs should consult Diodes' latest ultra-fast rectifier portfolio.
What is the maximum allowable junction temperature for UG1005-T?
The absolute maximum junction temperature is +150°C, and the storage temperature range is identical (−65°C to +150°C). Derating begins at TA > 55°C per Figure 1; at 75°C ambient, IO drops to ~0.75A. Thermal design must ensure TJ ≤ 150°C under worst-case conduction and surge conditions.
Does UG1005-T meet RoHS requirements?
Yes - UG1005-T has a lead-free finish and is RoHS compliant per EU Directive 2011/65/EU (RoHS 2), with exemptions applied for glass and high-temperature solder per Annexes V and VI. The tin-plated leads are solderable per MIL-STD-202, Method 208.
How does the DO-41 package affect thermal performance in PCB layout?
DO-41's RθJA of 95°C/W assumes standard JEDEC 2S2P copper pad layout (20mm² each side, 1oz Cu). Increasing copper area or adding thermal vias reduces RθJA significantly - e.g., 40mm² pads with 4×0.3mm vias can achieve ~65°C/W. Lead length beyond 9.5mm from case degrades thermal performance per Note 1.
UG1005-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 600 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.7 V @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 75 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 600 V
- Capacitance @ Vr, F:
- 10pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-41
- Operating Temperature - Junction:
- -65°C ~ 150°C
UG1005-T FAQ
1.How can I place an order for UG1005-T through Aetrix?
Please submit a Request for Quotation (RFQ) for UG1005-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 UG1005-T reliable?
The price and inventory of UG1005-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UG1005-T is usually 5 days.
3.What payment methods are accepted for UG1005-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UG1005-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UG1005-T?
UG1005-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UG1005-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 UG1005-T?
For technical support, including UG1005-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UG1005-T requirements.
6.How does Aetrix verify that UG1005-T is sourced from the original manufacturer or authorized distributors?
All UG1005-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 UG1005-T meets industry standards.
7.What is the process for return or replacement of UG1005-T?
All UG1005-T units undergo pre-shipment inspection (PSI). If there is an issue with UG1005-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 UG1005-T part is unused and in its original packaging.
Return procedure for UG1005-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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