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Taiwan Semiconductor Corporation DBLS156G
- Part No.:
- DBLS156G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Bridge Rectifiers
- Package:
- 4-SMD, Gull Wing
- Datasheet:
-
DBLS156G.pdf
- Description:
- BRIDGE RECT 1P 800V 1.5A DBLS
- Quantity:
- Payment:
- Shipping:
Inventory:2,665
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Product details
Overview
DBLS156G from Taiwan Semiconductor is a 1.5A, 800V repetitive peak reverse voltage (VRRM) standard quad bridge rectifier in DBLS surface-mount package, featuring 50A peak surge current (IFSM), 1.10V forward voltage at 1.5A/25°C, and AEC-Q101 qualification option (DBLS156GH). It serves as AC-to-DC conversion core in compact offline power supplies.
For engineers reviewing the DBLS156G datasheet, DBLS156G pinout, DBLS156G application, or DBLS156G equivalent, key selection criteria include VRRM rating for input voltage derating, thermal resistance (RθJL = 15°C/W) for board-level thermal design, IFSM margin for cold-start surges, and RoHS/halogen-free compliance for automotive and lighting end markets.
Technical Context
The DBLS156G integrates four silicon diodes in a single-phase bridge configuration with common-cathode and common-anode terminals externally accessible. Its 800V VRRM rating targets universal-input (85–265VAC) SMPS front-ends where DC bus peaks reach ~1130V under 265VAC + 10% line tolerance.
Thermal performance is defined by RθJL = 15°C/W (junction-to-lead) and RθJA = 40°C/W (junction-to-ambient), requiring minimum 25 mm² copper pad area per lead for rated 1.5A continuous operation at TA = 75°C. Moisture sensitivity level is J-STD-020 Level 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - supports 265VAC input with ≥2× safety margin against peak line transients |
| IF | 1.5 A continuous - delivers up to 18W output in 12V/1.5A SMPS with <1.1V conduction loss per diode |
| IFSM | 50 A (8.3ms half-sine) - withstands inrush surges from bulk capacitor charging without degradation |
| VF @ 1.5A/25°C | 1.10 V - enables <1.65W total conduction loss across all four diodes at full load |
| RθJL | 15 °C/W - allows direct thermal coupling to PCB copper for passive cooling in space-constrained adapters |
| IR @ 800V/25°C | ≤2 µA - ensures minimal leakage-induced standby power loss in energy-efficient lighting drivers |
Pinout & Package
Package: DBLS - surface-mount molded plastic case (UL 94V-0), 4.2mm × 4.2mm × 2.5mm body, matte tin-plated leads, JESD201 Class 2 whisker compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ~AC1 | AC input terminal 1 | One of two AC inputs; connects to live/neutral side of transformer secondary or EMI filter output |
| ~AC2 | AC input terminal 2 | Second AC input; completes bridge input pair; polarity non-critical for AC waveform |
| +DC | Positive DC output | Full-wave rectified positive rail; routed to bulk capacitor anode and primary-side controller VDD |
| –DC | Negative DC output / ground reference | Common return path; ties to bulk capacitor cathode and system GND plane |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified variant available | DBLS156GH meets stress test requirements for automotive cabin electronics (e.g., LED headlamp drivers) |
| High surge current capability (IFSM = 50A) | Eliminates need for external NTC thermistors in cost-sensitive adapter designs |
| Moisture sensitivity level 1 | Enables standard SMT reflow without baking, reducing manufacturing overhead |
| Halogen-free & RoHS compliant | Fulfills EU Directive 2011/65/EU and IEC 61249-2-21 for green electronics certification |
Applications
| LED Lighting Driver | USB-C Wall Adapter |
|---|---|
Use Scenario: Constant-current LED driver for commercial downlights operating from 100–240VAC input. IC Role / Device Role / Timing Role: Primary-side bridge rectifier converting AC line to unregulated DC bus feeding PFC controller and flyback IC. Use Value: 800V VRRM provides 2.5× margin over 240VAC peak (339V), ensuring reliability during brownouts and lightning-induced surges. | Use Scenario: 30W USB-C PD adapter with dual-output (5V/3A, 9V/3A) using quasi-resonant flyback topology. IC Role / Device Role / Timing Role: Input-stage full-wave rectifier delivering 12V/1.5A DC bus to primary-side controller and gate driver. Use Value: 1.10V VF minimizes conduction loss at 1.5A, improving efficiency by ~0.4% versus 1.25V alternatives in 30W class. |
| Industrial Control Power Supply | Smart Home Gateway AC/DC Module |
Use Scenario: DIN-rail mounted PLC power module accepting 85–265VAC input for 24VDC logic supply. IC Role / Device Role / Timing Role: Bridge rectifier in isolated flyback converter powering microcontroller, I/O isolators, and RS-485 transceivers. Use Value: RθJL = 15°C/W enables thermal coupling to metal chassis, sustaining 1.5A output at 70°C ambient without forced air. | Use Scenario: Compact AC/DC module inside Wi-Fi/Zigbee smart hub with space-limited PCB layout. IC Role / Device Role / Timing Role: Surface-mount bridge replacing discrete diode quad to reduce footprint by 45% and assembly steps. Use Value: DBLS package (4.2×4.2mm) fits within 12mm² area, freeing space for RF shielding and thermal pads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| GBU4K (ON Semiconductor) | Same 1.5A/800V rating but GBU through-hole package (10.1×14.2mm); VF = 1.1V; RθJA = 50°C/W | Requires PCB through-hole mounting and larger board area; less suitable for automated SMT lines | Select when legacy through-hole assembly is mandated or thermal mass from large copper pour is unavailable |
| MB10F (Fairchild/ON) | 1.0A/1000V; smaller MB package (4.0×4.0mm); VF = 1.05V; IFSM = 30A | Lower current rating limits use to ≤12W outputs; higher VRRM suits 305VAC industrial mains | Select for 1000V-rated systems with <1.0A load, or where lower VF offsets reduced surge margin |
Compared with GBU4K and MB10F, the DBLS156G uniquely balances SMT compatibility, 800V rating for universal-input SMPS, and 50A surge robustness-making it optimal for new 15–30W adapter and lighting designs prioritizing automated assembly and thermal efficiency.
Availability
DBLS156G is available at Aetrix Electronics and suitable for switching mode power supplies, LED lighting drivers, and USB-C wall adapters requiring stable component supply, RoHS compliance, and AEC-Q101-qualified variants for automotive-adjacent applications.
Supply support for DBLS156G 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, specializing in power rectifiers, TVS diodes, and MOSFETs since 1979.
The DBLS series was developed to deliver high-reliability, low-cost bridge rectifiers for cost-sensitive consumer and industrial power conversion, emphasizing SMT manufacturability, thermal performance, and global regulatory compliance.
FAQ
What is the maximum junction temperature rating for DBLS156G?
The DBLS156G has a maximum junction temperature (TJ MAX) of +150°C, verified per absolute maximum ratings table. This allows operation in high-ambient environments such as enclosed LED drivers or industrial control enclosures. Derating curves in the datasheet confirm 1.5A continuous current is sustainable up to 75°C ambient when mounted on ≥25 mm² copper pads. Exceeding TJ MAX risks irreversible parametric shift and premature failure.
Does DBLS156G support automotive applications?
Yes-the DBLS156GH variant is AEC-Q101 qualified and listed in TSC's automotive-grade product portfolio. The standard DBLS156G is not AEC-Q101 certified, but shares identical electrical and thermal specifications. For automotive cabin modules (e.g., interior lighting, infotainment power rails), DBLS156GH must be specified to meet stress-test requirements including temperature cycling, humidity bias, and mechanical shock.
What is the forward voltage drop of DBLS156G at full rated current?
The DBLS156G exhibits a typical forward voltage (VF) of 1.10 V per diode at IF = 1.5 A and TJ = 25°C, measured under pulsed conditions (PW = 0.3 ms). At elevated junction temperatures (e.g., 125°C), VF decreases slightly to ~1.02 V due to negative temperature coefficient. Total bridge conduction loss is approximately 1.65 W at full load and room temperature.
How does the DBLS156G package compare to traditional GBU bridges in PCB area?
The DBLS package measures 4.2 mm × 4.2 mm × 2.5 mm, occupying only 17.6 mm² footprint-less than 25% of the 10.1 mm × 14.2 mm (143 mm²) area required by through-hole GBU4K. This enables dense layout in slim-profile adapters and IoT gateways. The DBLS lead pitch (2.54 mm) and coplanarity comply with IPC-7351B for reliable reflow soldering.
Is DBLS156G halogen-free and RoHS compliant?
Yes-DBLS156G is fully RoHS compliant per Directive 2011/65/EU and halogen-free per IEC 61249-2-21, confirmed in the "Features" section of the official datasheet (Version M2103). The molding compound contains no brominated flame retardants, and terminal plating uses matte tin without lead or antimony. Certificate of Compliance is available upon request from Aetrix Electronics.
DBLS156G 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):
- 800 V
- Current - Average Rectified (Io):
- 1.5 A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 1.5 A
- Current - Reverse Leakage @ Vr:
- 2 µA @ 800 V
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DBLS
DBLS156G FAQ
1.How can I place an order for DBLS156G through Aetrix?
Please submit a Request for Quotation (RFQ) for DBLS156G 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 DBLS156G reliable?
The price and inventory of DBLS156G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DBLS156G is usually 5 days.
3.What payment methods are accepted for DBLS156G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DBLS156G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DBLS156G?
DBLS156G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DBLS156G 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 DBLS156G?
For technical support, including DBLS156G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DBLS156G requirements.
6.How does Aetrix verify that DBLS156G is sourced from the original manufacturer or authorized distributors?
All DBLS156G 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 DBLS156G meets industry standards.
7.What is the process for return or replacement of DBLS156G?
All DBLS156G units undergo pre-shipment inspection (PSI). If there is an issue with DBLS156G, 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 DBLS156G part is unused and in its original packaging.
Return procedure for DBLS156G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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