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Taiwan Semiconductor Corporation DBLS208G
- Part No.:
- DBLS208G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Bridge Rectifiers
- Package:
- 4-SMD, Gull Wing
- Datasheet:
-
DBLS208G.pdf
- Description:
- BRIDGE RECT 1PHASE 1.2KV 2A DBLS
- Quantity:
- Payment:
- Shipping:
Inventory:2,925
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Product details
Overview
DBLS208G from Taiwan Semiconductor is a 2 A, 1200 V repetitive peak reverse voltage (VRRM) standard quad bridge rectifier in DBLS surface-mount package, featuring 1.30 V max forward voltage at 2 A and 50 A peak surge current, used in high-voltage AC/DC conversion for industrial power adapters.
For engineers reviewing the DBLS208G datasheet, DBLS208G pinout, DBLS208G application, or DBLS208G equivalent, key selection criteria include VRRM rating, thermal resistance (RθJL = 15 °C/W), moisture sensitivity level (MSL 1), UL recognition (E-326854), and AEC-Q101 qualification status.
Technical Context
The DBLS208G integrates four silicon diodes in a single-phase bridge configuration with common-cathode and common-anode terminals, enabling full-wave rectification without external interconnects. Its DBLS molded plastic package supports automated SMT assembly and meets UL 94V-0 flammability requirements.
Thermal performance is defined by junction-to-lead resistance of 15 °C/W and junction-to-ambient resistance of 40 °C/W, allowing sustained 2 A average forward current at ≤75 °C ambient when mounted on recommended PCB pad layout. Reverse leakage remains ≤2 µA at 25 °C and ≤500 µA at 125 °C under rated 1200 V reverse bias.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1200 V - Maximum non-repetitive reverse voltage the device blocks without breakdown |
| IF | 2 A - Continuous average forward current capability per bridge leg at TA = 25°C |
| VF (max) | 1.30 V @ 2 A, TJ = 25°C - Forward voltage drop per diode, directly impacting conduction loss in SMPS output stage |
| IFSM | 50 A - Peak non-repetitive surge current tolerance for 8.3 ms half-sine wave, critical for inrush handling |
| RθJL | 15 °C/W - Junction-to-lead thermal resistance, determines temperature rise above lead temperature under load |
| MSL | Level 1 - No floor life limitation; safe for reflow without dry pack or baking |
| UL File | E-326854 - Recognized component for end-equipment safety compliance |
Pinout & Package
Package: DBLS - Surface-mount molded plastic case with matte tin-plated leads, 0.360 g weight, UL 94V-0 rated compound, polarity marked on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AC1 | AC input terminal 1 | One of two alternating-current input pins; connects to transformer secondary or line input |
| AC2 | AC input terminal 2 | Second AC input pin; completes full-wave bridge input path with AC1 |
| + (Anode) | Positive DC output | Common anode node of internal diodes; delivers rectified positive rail |
| – (Cathode) | Negative DC output | Common cathode node of internal diodes; serves as return path for DC load |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified option available | DBLS208GH variant meets automotive-grade reliability testing for under-hood power modules |
| High surge current capability | 50 A IFSM enables robust operation during cold-start or capacitor charging transients |
| Moisture sensitivity level 1 | Eliminates pre-reflow baking requirement, reducing manufacturing cost and cycle time |
| RoHS & halogen-free compliance | Meets IEC 61249-2-21 and EU RoHS Directive for environmentally constrained applications |
Applications
| Industrial Power Adapters | LED Driver Power Supplies |
|---|---|
Use Scenario: Off-line AC/DC conversion for 24–48 V output in DIN-rail mounted industrial adapters. IC Role / Device Role / Timing Role: Quad bridge rectifier providing full-wave DC bus generation prior to bulk capacitor and PWM controller stage. Use Value: 1200 V VRRM rating ensures margin against line surges in unregulated 230 VAC mains environments. | Use Scenario: Constant-voltage LED drivers for street lighting and high-bay fixtures operating from 220–240 VAC input. IC Role / Device Role / Timing Role: Primary-side bridge rectifier delivering stable DC link for flyback or buck-boost LED controller ICs. Use Value: Low RθJL (15 °C/W) maintains junction temperature within 150 °C limit even at 70 °C ambient with minimal heatsinking. |
| Switching Mode Power Supplies | AC Motor Control Interface |
Use Scenario: Input rectification stage in 50–100 W open-frame SMPS for factory automation controllers. IC Role / Device Role / Timing Role: Standard bridge rectifier converting AC line to DC bus feeding PFC and main DC/DC converter stages. Use Value: 50 A IFSM withstands repeated inrush currents from large input capacitors without degradation. | Use Scenario: Auxiliary power supply rectification in three-phase motor drive gate driver boards. IC Role / Device Role / Timing Role: Isolated auxiliary bridge supplying logic-level DC for isolated gate drivers and MCU peripherals. Use Value: MSL Level 1 and JESD201 Class 2 whisker resistance ensure long-term reliability in vibration-prone industrial enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| GBU2K | Same 2 A / 1200 V rating but GBPC package (larger footprint, through-hole); RθJA = 50 °C/W vs. 40 °C/W | Requires PCB redesign for through-hole mounting; less suitable for high-density SMT layouts | Select GBU2K only if legacy through-hole assembly infrastructure is fixed and thermal margin permits higher ambient rise |
| GBU6K | Higher 6 A rating, same 1200 V VRRM; larger DBLS-4 package variant with RθJL = 12 °C/W | Over-spec'd current capacity increases cost and board area; justified only for future-proofing or derated 3–4 A designs | Choose GBU6K when system-level surge testing requires >50 A IFSM or long-life field deployment demands extra conduction margin |
Compared with GBU2K and GBU6K, the DBLS208G offers optimal balance of SMT compatibility, thermal efficiency (RθJL = 15 °C/W), and cost for 2 A industrial adapter designs-without over-engineering footprint or current rating.
Availability
DBLS208G is available at Aetrix Electronics and suitable for industrial power adapters, LED driver power supplies, and switching mode power supplies requiring stable component supply, RoHS/halogen-free compliance, and MSL Level 1 manufacturability.
Supply support for DBLS208G 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 industrial, computing, and consumer markets since 1979.
The DBLS201G–DBLS209G series was developed to deliver high-voltage, surface-mount bridge rectifiers with AEC-Q101 qualification options, optimized for compact, high-efficiency AC/DC front-end designs in harsh-environment applications.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for DBLS208G?
The DBLS208G has a VRRM rating of 1200 V, as confirmed in the Absolute Maximum Ratings table across all DBLS201G–DBLS209G variants. This value is fixed for the DBLS208G part number and defines its blocking capability under reverse bias conditions in AC/DC rectifier circuits.
Is DBLS208G RoHS and halogen-free compliant?
Yes, DBLS208G is RoHS compliant and halogen-free per IEC 61249-2-21, as explicitly stated in the FEATURES section of the official Taiwan Semiconductor datasheet revision J2103. These compliance attributes apply to the standard DBLS208G variant, not only the AEC-Q101-qualified DBLS208GH version.
Does DBLS208G have AEC-Q101 qualification?
The DBLS208G itself is not AEC-Q101 qualified; however, the AEC-Q101-qualified variant is designated DBLS208GH. The "H" suffix indicates automotive-grade qualification, while the base DBLS208G is intended for industrial and commercial applications per the Ordering Information table.
What is the forward voltage (VF) specification for DBLS208G at rated current?
At IF = 2 A and TJ = 25°C, DBLS208G has a maximum forward voltage of 1.30 V per diode, as specified in the Electrical Specifications table. This value applies specifically to DBLS208G and DBLS209G, distinguishing them from lower-voltage variants (e.g., DBLS201G–DBLS207G) which specify 1.15 V max.
What is the moisture sensitivity level (MSL) of DBLS208G?
DBLS208G has a moisture sensitivity level of MSL 1, per J-STD-020, meaning it may be stored indefinitely at ambient conditions and does not require dry packing or baking before surface-mount reflow. This is confirmed in the FEATURES section and applies to all DBLS201G–DBLS209G devices.
DBLS208G 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):
- 1.2 kV
- Current - Average Rectified (Io):
- 2 A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 2 A
- Current - Reverse Leakage @ Vr:
- 2 µA @ 1200 V
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DBLS
DBLS208G FAQ
1.How can I place an order for DBLS208G through Aetrix?
Please submit a Request for Quotation (RFQ) for DBLS208G 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 DBLS208G reliable?
The price and inventory of DBLS208G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DBLS208G is usually 5 days.
3.What payment methods are accepted for DBLS208G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DBLS208G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DBLS208G?
DBLS208G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DBLS208G 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 DBLS208G?
For technical support, including DBLS208G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DBLS208G requirements.
6.How does Aetrix verify that DBLS208G is sourced from the original manufacturer or authorized distributors?
All DBLS208G 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 DBLS208G meets industry standards.
7.What is the process for return or replacement of DBLS208G?
All DBLS208G units undergo pre-shipment inspection (PSI). If there is an issue with DBLS208G, 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 DBLS208G part is unused and in its original packaging.
Return procedure for DBLS208G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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