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Home > Products > Discrete Semiconductor Products > Diodes > Bridge Rectifiers

Taiwan Semiconductor Corporation DBLS205G-T

Name: DBLS205G-T
Brand: Taiwan Semiconductor Corporation
SKU: DBLS205G-T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DBLS205G-T

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Bridge Rectifiers

Package:: 4-SMD, Gull Wing

Datasheet:: DBLS205G-T.pdf

Description:: BRIDGE RECT 1PHASE 600V 2A DBLS

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Product details

Overview

DBLS205G-T from Taiwan Semiconductor is a 2 A, 600 V standard quad bridge rectifier in DBLS surface-mount package, featuring 50 A peak surge current, 1.15 V max forward voltage per diode at 2 A, and 2 µA max reverse leakage at 25°C - used in AC/DC front-end stages of compact switching power supplies.

For engineers reviewing the DBLS205G-T datasheet, DBLS205G-T pinout, DBLS205G-T application, or DBLS205G-T equivalent, key selection criteria include repetitive peak reverse voltage (600 V), thermal resistance (R_θJL = 15 °C/W), junction temperature range (–55 to +150 °C), and RoHS/halogen-free compliance for industrial-grade SMPS design.

Technical Context

The DBLS205G-T integrates four silicon PN-junction diodes in a single-phase full-wave bridge configuration with common-cathode and common-anode terminals externally accessible. Its molded DBLS package enables high-density PCB layout while maintaining 400 V to 1000 V V_RRM scalability across the family.

Thermal performance is defined by R_θJL = 15 °C/W and R_θJA = 40 °C/W, supporting continuous 2 A conduction at ambient temperatures up to 75°C without forced airflow. Reverse leakage remains ≤500 µA at 125°C, ensuring stable operation in thermally constrained lighting and adapter designs.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	600 V - maximum repetitive reverse voltage per diode; defines safe AC input voltage rating (e.g., 424 V_RMS sine wave).
I_F	2 A - average forward current; supports continuous DC output up to ~2 A after rectification and filtering.
I_FSM	50 A - non-repetitive surge current (8.3 ms half-sine); withstands inrush into capacitive loads in SMPS startup.
V_F (max)	1.15 V @ 2 A, 25°C - total forward drop across two series diodes in conduction path is ≤2.3 V, minimizing conduction loss.
R_θJL	15 °C/W - junction-to-lead thermal resistance; enables direct heat transfer to PCB copper, critical for thermal reliability in sealed adapters.
T_J Range	–55 to +150 °C - extended junction temperature range allows deployment in high-ambient environments like LED drivers and industrial power modules.

Pinout & Package

Package: DBLS - surface-mount, 4-terminal molded plastic case (UL 94V-0), 0.360 g weight, matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 1A whisker resistance.

Pin/Terminal	Circuit Role	Design Meaning
~AC1	AC input terminal 1	One AC input node of full-wave bridge; connects to live/phase side of transformer secondary or EMI filter output.
~AC2	AC input terminal 2	Second AC input node; completes AC input pair - polarity must match marking diagram to avoid reverse connection.
+DC	Positive DC output	Common cathode of two diodes; delivers rectified positive rail to bulk capacitor and downstream regulators.
–DC	Negative DC output / ground reference	Common anode of two diodes; serves as return path and system ground reference for isolated DC outputs.

Key Features

Feature	Design Value
Quad bridge integration	Single-package replacement for four discrete diodes - reduces PCB area by >60% vs. DO-41 layout and eliminates interconnect parasitics.
Moisture sensitivity level 1	No bake requirement before reflow; compatible with standard SMT assembly lines without special handling or dry pack.
UL Recognized (E-326854)	Meets UL/CSA safety standards for primary-side rectification - simplifies end-equipment certification for Class II adapters.
Halogen-free & RoHS	Complies with IEC 61249-2-21 and EU RoHS Directive - meets environmental requirements for global commercial and industrial shipments.

Applications

LED Driver Power Supply	USB-C Wall Adapter
Use Scenario: Rectifying 12–24 V_AC transformer output in constant-current LED drivers for streetlight or architectural lighting. IC Role / Device Role / Timing Role: Primary AC/DC conversion stage delivering low-ripple DC bus to buck controller and MOSFET switch. Use Value: 600 V V_RRM provides 2× margin over 24 V_AC RMS (34 V_PK), and 2 µA IR at 25°C ensures minimal standby loss in always-on fixtures.	Use Scenario: Input rectification in compact 30–65 W USB-C PD adapters with high-frequency flyback topology. IC Role / Device Role / Timing Role: Front-end bridge converting universal AC input (90–264 V_AC) to high-voltage DC bus for primary-side switching. Use Value: R_θJL = 15 °C/W enables thermal coupling to ground plane, sustaining 2 A load without derating in 20 mm × 20 mm board area.
Industrial Control Power Module	Smart Home Gateway Power Stage
Use Scenario: Providing auxiliary 5/12 V rails in PLC I/O modules operating in factory-floor environments (–25 to +70°C ambient). IC Role / Device Role / Timing Role: Isolated AC/DC converter input stage feeding offline controller IC and optocoupler feedback circuitry. Use Value: –55 to +150°C T_J range ensures reliable startup at cold ambient and sustained operation under enclosure heating.	Use Scenario: Rectifying AC input in space-constrained smart speaker or hub power supplies with dual-output flyback design. IC Role / Device Role / Timing Role: Compact bridge solution replacing discrete diode array to meet CE/UKCA conducted emission limits via reduced loop area. Use Value: DBLS footprint minimizes high-di/dt AC loop area, lowering EMI generation without added snubbers or shielding.

LED Driver Power Supply

USB-C Wall Adapter

Use Scenario: Rectifying 12–24 V_AC transformer output in constant-current LED drivers for streetlight or architectural lighting.

IC Role / Device Role / Timing Role: Primary AC/DC conversion stage delivering low-ripple DC bus to buck controller and MOSFET switch.

Use Value: 600 V V_RRM provides 2× margin over 24 V_AC RMS (34 V_PK), and 2 µA IR at 25°C ensures minimal standby loss in always-on fixtures.

Use Scenario: Input rectification in compact 30–65 W USB-C PD adapters with high-frequency flyback topology.

IC Role / Device Role / Timing Role: Front-end bridge converting universal AC input (90–264 V_AC) to high-voltage DC bus for primary-side switching.

Use Value: R_θJL = 15 °C/W enables thermal coupling to ground plane, sustaining 2 A load without derating in 20 mm × 20 mm board area.

Industrial Control Power Module

Smart Home Gateway Power Stage

Use Scenario: Providing auxiliary 5/12 V rails in PLC I/O modules operating in factory-floor environments (–25 to +70°C ambient).

IC Role / Device Role / Timing Role: Isolated AC/DC converter input stage feeding offline controller IC and optocoupler feedback circuitry.

Use Value: –55 to +150°C T_J range ensures reliable startup at cold ambient and sustained operation under enclosure heating.

Use Scenario: Rectifying AC input in space-constrained smart speaker or hub power supplies with dual-output flyback design.

IC Role / Device Role / Timing Role: Compact bridge solution replacing discrete diode array to meet CE/UKCA conducted emission limits via reduced loop area.

Use Value: DBLS footprint minimizes high-di/dt AC loop area, lowering EMI generation without added snubbers or shielding.

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 2 A / 600 V rating, but GBU through-hole package (10.5 × 14.2 mm) vs. DBLS SMT (8.5 × 6.5 mm); R_θJA = 50 °C/W vs. 40 °C/W.	Requires PCB through-hole mounting and larger board area; less suitable for ultra-thin adapters or double-sided layouts.	Select when legacy through-hole assembly is mandated or higher surge margin (I_FSM = 60 A) is required.
GBU6K (ON Semiconductor)	6 A rating, same 600 V V_RRM, but larger GBU package and higher VF (1.2 V typ); not pin-compatible - different terminal spacing and orientation.	Over-spec'd current capacity increases cost and board space; unsuitable where thermal or size constraints drive 2 A selection.	Choose only if future-proofing for higher load or multi-platform BOM consolidation justifies footprint and cost penalty.

Compared with GBU2K-E3/51 and GBU6K, the DBLS205G-T offers optimal balance of SMT compatibility, thermal efficiency (R_θJL = 15 °C/W), and footprint density for modern compact power supplies - without over-engineering current rating or sacrificing manufacturability.

Availability

DBLS205G-T is available at Aetrix Electronics and suitable for switching mode power supplies, USB-C wall adapters, and LED driver power stages requiring stable component supply, consistent parametric performance, and long-term industrial availability.

Supply support for DBLS205G-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 DBLS205G-T belongs to TSC's standard bridge rectifier product line, engineered specifically for high-efficiency, space-constrained AC/DC conversion in consumer and industrial power supplies - emphasizing thermal robustness, assembly compatibility, and regulatory compliance.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for DBLS205G-T?

The DBLS205G-T has a V_RRM of 600 V, as specified in the Absolute Maximum Ratings table. This value is fixed for the DBLS205G-T variant and distinguishes it from other members of the DBLS204G-T to DBLS207G-T family (400 V to 1000 V). It defines the highest instantaneous reverse voltage each diode can block repeatedly without breakdown.

Does DBLS205G-T require moisture preconditioning before reflow soldering?

No, DBLS205G-T is rated at Moisture Sensitivity Level 1 per J-STD-020, meaning it may be stored indefinitely at ≤30°C/60% RH and placed directly into reflow without baking or dry-pack handling. This simplifies SMT line integration and eliminates yield risk from moisture-induced popcorning during reflow.

What is the forward voltage drop specification for DBLS205G-T at rated current?

The DBLS205G-T specifies a maximum forward voltage (V_F) of 1.15 V per diode at I_F = 2 A and T_J = 25°C. Since the device operates as a full-wave bridge, the total conduction path includes two series diodes, resulting in up to 2.3 V total drop under worst-case conditions - critical for calculating conduction losses in thermal design.

Is DBLS205G-T certified for safety standards such as UL recognition?

Yes, DBLS205G-T is UL Recognized under File # E-326854, confirming compliance with UL/CSA 60747-1 and related safety requirements for semiconductor devices. This certification applies to the DBLS204G-T through DBLS207G-T family and supports end-product safety approvals for Class II power supplies and adapters.

What does the "G" suffix in DBLS205G-T indicate?

The "G" in DBLS205G-T denotes halogen-free molding compound per IEC 61249-2-21, and confirms RoHS compliance. It is part of the standardized ordering code where "DBLS2xG-T" maps x=04 to 07 for 400–1000 V ratings, and "-T" indicates tape-and-reel packaging (1500 units per reel).

DBLS205G-T Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: 4-SMD, Gull Wing

Packaging:: Tape & Reel (TR)

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:: Surface Mount

Supplier Device Package:: DBLS

DBLS205G-T FAQ

1.How can I place an order for DBLS205G-T through Aetrix?

Please submit a Request for Quotation (RFQ) for DBLS205G-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 DBLS205G-T reliable?

The price and inventory of DBLS205G-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DBLS205G-T is usually 5 days.

3.What payment methods are accepted for DBLS205G-T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DBLS205G-T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DBLS205G-T?

DBLS205G-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DBLS205G-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 DBLS205G-T?

For technical support, including DBLS205G-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DBLS205G-T requirements.

6.How does Aetrix verify that DBLS205G-T is sourced from the original manufacturer or authorized distributors?

All DBLS205G-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 DBLS205G-T meets industry standards.

7.What is the process for return or replacement of DBLS205G-T?

All DBLS205G-T units undergo pre-shipment inspection (PSI). If there is an issue with DBLS205G-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 DBLS205G-T part is unused and in its original packaging.

Return procedure for DBLS205G-T:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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