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Taiwan Semiconductor Corporation DBL205G-T
- Part No.:
- DBL205G-T
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Bridge Rectifiers
- Package:
- 4-DIP (0.300", 7.62mm)
- Datasheet:
-
DBL205G-T.pdf
- Description:
- BRIDGE RECT 1PHASE 600V 2A DBL
- Quantity:
- Payment:
- Shipping:
Inventory:5,513
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Product details
Overview
DBL205G-T from Taiwan Semiconductor is a 2A, 600V standard bridge rectifier in DBL package, featuring 50A peak surge current handling, 1.15V max forward voltage per diode at 2A, and 2µA max reverse leakage at 25°C. It serves as the AC-to-DC front-end rectifier in compact off-line power supplies.
For engineers reviewing the DBL205G-T datasheet, DBL205G-T pinout, DBL205G-T application, or DBL205G-T equivalent, key selection criteria include VRRM = 600V, IFSM = 50A, thermal resistance RθJL = 15°C/W, RoHS/halogen-free compliance, and UL recognition under file E-326854.
Technical Context
The DBL205G-T integrates four silicon junction diodes in a single-phase full-wave bridge configuration with common-cathode and common-anode terminals. Its quad-diode layout enables direct AC input rectification without external interconnection, supporting continuous 2A average forward current at ≤150°C junction temperature.
Thermally optimized for PCB mounting, it delivers RθJA = 40°C/W (free air) and RθJL = 15°C/W (lead-to-junction), enabling reliable operation in space-constrained adapters and lighting drivers where lead-frame conduction dominates heat dissipation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - Maximum repetitive reverse voltage per diode; defines safe AC input voltage ceiling (e.g., 424V RMS sine wave) |
| IF(AV) | 2 A - Continuous average forward current rating; determines minimum heatsinking for sustained DC output load |
| IFSM | 50 A - Non-repetitive peak surge current (8.3ms half-sine); withstands inrush into capacitive inputs |
| VF (per diode) | ≤1.15 V @ 2A, 25°C - Forward drop across one conducting diode pair; impacts conduction loss and thermal design |
| IR (per diode) | ≤2 µA @ 600V, 25°C - Reverse leakage per diode; critical for low-power standby efficiency and high-impedance bias networks |
| RθJL | 15 °C/W - Junction-to-lead thermal resistance; enables direct thermal modeling from lead temperature to junction |
| Package | DBL - Molded plastic case with matte tin-plated leads; UL 94V-0 rated, J-STD-002 solderable, JESD201 Class 1A whisker compliant |
Pinout & Package
DBL205G-T uses the DBL surface-mount package: 4-pin, single-row, gull-wing leads with polarity marking ('+' and '–' symbols adjacent to AC input pins). The package measures 10.5 × 8.0 × 2.7 mm (L × W × H) with 2.54 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AC1 | AC Input Terminal 1 | One leg of AC input; connects to transformer secondary or line filter output |
| AC2 | AC Input Terminal 2 | Second leg of AC input; completes full-wave bridge input path |
| + | Positive DC Output | Anode of both upper diodes; supplies regulated DC bus or bulk capacitor positive rail |
| – | Negative DC Output | Cathode of both lower diodes; returns to bulk capacitor negative or ground reference |
Key Features
| Feature | Design Value |
|---|---|
| UL Recognized (E-326854) | Validates safety compliance for end-equipment certification in North America without additional component-level testing |
| RoHS & Halogen-Free (IEC 61249-2-21) | Meets global environmental regulations and enables use in consumer electronics with strict material declarations |
| 50A IFSM Rating | Supports robust startup behavior in SMPS with large bulk capacitors, reducing need for NTC inrush limiters |
| Junction Temp Range: –55°C to +150°C | Enables deployment in industrial environments and enclosed lighting fixtures with elevated ambient temperatures |
| Molded Plastic Construction (UL 94V-0) | Provides flame-retardant mechanical integrity and long-term reliability on FR-4 PCBs under thermal cycling |
Applications
| Switching Mode Power Supply (SMPS) | AC/DC Adapters |
|---|---|
Use Scenario: Off-line 2A DC output supply for networking equipment with universal AC input (90–264VAC). IC Role / Device Role / Timing Role: Primary AC-to-DC rectifier converting transformer secondary AC to pulsating DC before PFC and PWM stages. Use Value: 600V VRRM safely accommodates 264VAC input with margin; 50A IFSM handles cold-start surges into 1000µF bulk capacitance. | Use Scenario: Compact wall-mounted adapter for IoT sensors operating from 100–240VAC mains. IC Role / Device Role / Timing Role: Input-stage bridge rectifier delivering unregulated DC to linear or buck regulator ICs. Use Value: Low VF (≤1.15V) minimizes conduction loss in thermally constrained enclosures; DBL package fits tight board layouts. |
| LED Lighting Drivers | Industrial Control Power Supplies |
Use Scenario: Constant-current LED driver for commercial downlights with integrated EMI filtering. IC Role / Device Role / Timing Role: Front-end rectifier feeding passive or active PFC stage prior to DC-DC conversion. Use Value: 2µA IR at 25°C ensures minimal standby power loss; halogen-free construction satisfies lighting OEM material specs. | Use Scenario: Auxiliary 2A bias supply in PLC I/O modules exposed to –40°C to +70°C ambient. IC Role / Device Role / Timing Role: Isolated AC input rectifier powering control logic and isolated gate drivers. Use Value: –55°C to +150°C TJ range supports extended temperature operation; UL recognition simplifies system safety approval. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| GBU2K-E3/51 (Vishay) | Same 2A/600V rating, GBU package (larger footprint, higher RθJA = 50°C/W) | Better suited for through-hole prototyping or higher airflow environments | Select when manual assembly or legacy GBU footprint compatibility is required |
| GBU2J (ON Semiconductor) | Identical electrical specs; GBU package, slightly higher VF (1.2V typ) | Compatible in cost-sensitive designs where minor conduction loss increase is acceptable | Choose for second-source availability in GBU-based production lines |
Compared with GBU2K-E3/51 and GBU2J, the DBL205G-T offers superior thermal performance (RθJL = 15°C/W vs. ~25°C/W for GBU), smaller DBL footprint, and UL recognition-making it optimal for high-density, surface-mount, safety-certified power supplies.
Availability
DBL205G-T is available at Aetrix Electronics and suitable for switching mode power supplies, AC/DC adapters, LED lighting drivers, and industrial control power supplies requiring stable component supply, consistent parametric performance, and full regulatory documentation.
Supply support for DBL205G-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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global power, automotive, and industrial markets since 1979.
The DBL205G-T belongs to TSC's standard bridge rectifier product line, engineered for high-volume, cost-sensitive AC/DC conversion in consumer and industrial power systems where reliability, safety certification, and thermal efficiency are prioritized.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for DBL205G-T?
The DBL205G-T has a VRRM rating of 600 V, meaning it can block up to 600 V of repetitive reverse voltage across each internal diode. This value is specified in the Absolute Maximum Ratings table and defines the highest AC input voltage (e.g., 424 V RMS) the device can safely rectify without breakdown. Exceeding this rating risks permanent damage to the DBL205G-T.
Does DBL205G-T require a heatsink for 2A continuous operation?
At 2A continuous forward current and 25°C ambient, the DBL205G-T typically does not require an external heatsink if mounted on a standard FR-4 PCB with ≥1 cm² copper pour per lead. Its RθJA = 40°C/W and RθJL = 15°C/W allow junction temperature to remain within the 150°C limit under these conditions. However, DBL205G-T thermal performance must be verified using actual board layout and airflow in final design.
Is DBL205G-T compatible with lead-free reflow soldering processes?
Yes, DBL205G-T features matte tin-plated leads qualified to J-STD-002 for solderability and is rated for lead-free reflow profiles (peak temperature ≤260°C, 10-second dwell). Its DBL package meets JEDEC MSL Level 1, eliminating bake requirements prior to assembly. The device remains fully functional after standard Pb-free reflow cycles used for DBL205G-T production.
What does the 'G' suffix indicate in DBL205G-T?
The 'G' in DBL205G-T denotes halogen-free molding compound per IEC 61249-2-21, confirmed in the official Taiwan Semiconductor datasheet. It is not a grade or tolerance code. All DBL20xG-T variants-including DBL205G-T-share this environmentally compliant material specification, alongside RoHS compliance and UL recognition.
Can DBL205G-T replace DBL204G-T in an existing design?
Yes, DBL205G-T is a direct upgrade from DBL204G-T with identical package, pinout, and current ratings-but offers higher VRRM (600 V vs. 400 V). No PCB changes are needed. Designers should verify that the increased reverse voltage margin aligns with system safety requirements and does not introduce unintended stress on downstream components in the DBL205G-T circuit.
DBL205G-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- 4-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Diode Type:
- Single Phase
- Technology:
- Standard
- Voltage - Peak Reverse (Max):
- 600 V
- Current - Average Rectified (Io):
- 2 A
- Voltage - Forward (Vf) (Max) @ If:
- 1.15 V @ 2 A
- Current - Reverse Leakage @ Vr:
- 2 µA @ 600 V
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DBL
DBL205G-T FAQ
1.How can I place an order for DBL205G-T through Aetrix?
Please submit a Request for Quotation (RFQ) for DBL205G-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 DBL205G-T reliable?
The price and inventory of DBL205G-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DBL205G-T is usually 5 days.
3.What payment methods are accepted for DBL205G-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DBL205G-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DBL205G-T?
DBL205G-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DBL205G-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 DBL205G-T?
For technical support, including DBL205G-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DBL205G-T requirements.
6.How does Aetrix verify that DBL205G-T is sourced from the original manufacturer or authorized distributors?
All DBL205G-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 DBL205G-T meets industry standards.
7.What is the process for return or replacement of DBL205G-T?
All DBL205G-T units undergo pre-shipment inspection (PSI). If there is an issue with DBL205G-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 DBL205G-T part is unused and in its original packaging.
Return procedure for DBL205G-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DBL205G-T Tags
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