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Taiwan Semiconductor Corporation DBLS157G-T
- Part No.:
- DBLS157G-T
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Bridge Rectifiers
- Package:
- 4-SMD, Gull Wing
- Datasheet:
-
DBLS157G-T.pdf
- Description:
- BRIDGE RECT 1PHASE 1KV 1.5A DBLS
- Quantity:
- Payment:
- Shipping:
Inventory:8,425
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Product details
Overview
DBLS157G-T from Taiwan Semiconductor is a 1.5A, 1000V rated standard quad bridge rectifier in DBLS package, featuring 50A peak surge current capability, 1.1V max forward voltage per diode at 1.5A, and 2µA max reverse leakage at 25°C - deployed in AC/DC front-end stages of compact switching mode power supplies.
For engineers reviewing the DBLS157G-T datasheet, DBLS157G-T pinout, DBLS157G-T application, or DBLS157G-T equivalent, key selection criteria include repetitive peak reverse voltage (1000V), thermal resistance (RθJL = 15°C/W), junction temperature range (–55°C to +150°C), and RoHS/halogen-free compliance for industrial-grade power conversion designs.
Technical Context
The DBLS157G-T integrates four silicon diodes in a single-phase full-wave bridge configuration with common-cathode/common-anode topology, enabling direct AC-to-DC rectification without external interconnection. Its DBLS molded plastic package supports surface-mount assembly and meets UL 94V-0 flammability rating.
Thermally, it delivers RθJL = 15°C/W and RθJA = 40°C/W, allowing sustained 1.5A average forward current up to +125°C ambient when mounted on 1-inch² copper area. Reverse recovery is not specified; device operates as a standard (non-fast-recovery) rectifier.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - maximum repetitive reverse voltage per diode; defines safe AC input voltage ceiling (e.g., 700V RMS line) before breakdown |
| IF | 1.5 A - continuous average forward current rating; determines steady-state power handling in SMPS input stage |
| IFSM | 50 A - non-repetitive surge current (8.3 ms half-sine); withstands inrush during cold-start of adapters or lighting ballasts |
| VF (per diode) | ≤1.1 V @ 1.5A, 25°C - forward drop directly impacts conduction loss and thermal design margin in high-efficiency converters |
| RθJL | 15 °C/W - junction-to-lead thermal resistance; enables direct heatsinking via PCB copper pour or metal-core board |
| I2t | 10.37 A²s - fusing rating for short-duration overcurrent events; used in fuse coordination analysis |
Pinout & Package
Package: DBLS - surface-mount, 4-terminal molded plastic case with matte tin-plated leads, UL 94V-0 rated, 0.360g weight, polarity marked on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AC1 | Input AC terminal 1 | One leg of AC input; connects to live/line side of transformer secondary or EMI filter output |
| AC2 | Input AC terminal 2 | Second leg of AC input; completes full-wave bridge input path |
| + (Anode common) | Positive DC output | Full-wave rectified positive rail; feeds bulk capacitor or PFC stage input |
| – (Cathode common) | Negative DC output / return | DC common reference node; ties to bulk capacitor negative and system ground reference |
Key Features
| Feature | Design Value |
|---|---|
| UL Recognized (E326854) | Validates safety compliance for end-equipment certification in North America without additional component-level testing |
| Moisture Sensitivity Level 1 | Enables standard SMT reflow without baking; eliminates pre-conditioning step in high-volume manufacturing |
| Halogen-free (IEC 61249-2-21) | Meets environmental requirements for consumer electronics and industrial equipment sold in EU/Asia markets |
| J-STD-002 solderable terminals | Guarantees reliable wetting and joint integrity using standard lead-free or SnPb solder profiles |
Applications
| LED Driver Power Supply | USB-C Wall Adapter |
|---|---|
Use Scenario: Rectifying 100–277V AC mains into DC bus for constant-current LED driver ICs in commercial lighting fixtures. IC Role / Device Role / Timing Role: Primary-side bridge rectifier converting AC input to unregulated DC prior to buck or flyback regulation. Use Value: 1000V VRRM ensures margin against line surges and transients in universal-input LED drivers operating globally. | Use Scenario: Input-stage rectification in compact 20–65W USB-C PD adapters with high-density PCB layouts. IC Role / Device Role / Timing Role: Full-wave bridge providing low-profile, surface-mount AC/DC conversion ahead of active clamp flyback controller. Use Value: DBLS package footprint and 1.5A/1000V rating enable space-constrained designs while maintaining robustness against 300VAC brownouts and lightning-induced spikes. |
| Industrial Sensor Power Module | Smart Home Appliance Control Board |
Use Scenario: Providing isolated DC bias for analog signal conditioning circuits in factory-floor pressure/temperature sensors. IC Role / Device Role / Timing Role: Mains-fed bridge rectifier feeding linear regulator or low-noise LDO for precision analog front-ends. Use Value: Low 2µA reverse leakage at 25°C minimizes standby power draw and improves long-term reliability in always-on sensor nodes. | Use Scenario: AC/DC conversion in control boards of Wi-Fi-enabled refrigerators, washing machines, and HVAC controllers. IC Role / Device Role / Timing Role: Input rectifier in auxiliary power supply powering MCU, wireless SoC, and display backlight. Use Value: UL recognition and halogen-free construction support global regulatory approval and sustainability reporting for white-goods OEMs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| GBU6K-E3/51 (Vishay) | Same 1.5A/1000V rating, but GBU through-hole package (larger footprint, higher RθJA = 50°C/W) | Requires PCB redesign for through-hole mounting; less suitable for ultra-thin adapters | Select if legacy through-hole assembly is mandated or thermal budget allows higher ambient rise |
| MB10F (ON Semiconductor) | Lower VRRM = 1000V but only 1.0A IF; smaller MB package, RθJL = 20°C/W | Not recommended for continuous 1.5A loads; derating required above 85°C ambient | Choose only for cost-sensitive, low-power (<15W) applications where peak current remains below 1.0A |
Compared with GBU6K-E3/51 and MB10F, the DBLS157G-T uniquely balances surface-mount compatibility, 1.5A thermal capability, and 1000V surge margin in a low-profile DBLS package - making it optimal for next-generation compact, certified, and high-reliability AC/DC modules.
Availability
DBLS157G-T is available at Aetrix Electronics and suitable for switching mode power supplies, LED lighting drivers, and USB-C wall adapters requiring stable component supply across industrial and consumer production cycles.
Supply support for DBLS157G-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 Taiwanese manufacturer specializing in discrete semiconductors, including rectifiers, TVS diodes, and MOSFETs, with ISO/TS 16949 and AEC-Q200 qualified lines.
The DBLS157G-T belongs to TSC's standard bridge rectifier product line, engineered for cost-effective, high-yield AC/DC conversion in space-constrained, thermally demanding power supplies targeting global safety and environmental standards.
FAQ
What is the maximum junction temperature rating for DBLS157G-T?
The DBLS157G-T has a maximum junction temperature (TJ) of +150°C and a minimum of –55°C. This wide operating range supports deployment in environments such as enclosed LED luminaires or industrial control cabinets where ambient temperatures exceed 85°C. Derating curves in the datasheet confirm 1.5A IF is maintainable up to +125°C ambient with proper PCB copper area.
Does DBLS157G-T have a fast recovery characteristic?
No, the DBLS157G-T is a standard recovery bridge rectifier - its datasheet does not specify reverse recovery time (trr) or soft recovery behavior. It is optimized for general-purpose AC/DC conversion, not high-frequency switching applications. For PFC or high-frequency flyback designs, a dedicated fast- or ultrafast-recovery rectifier should be selected instead of DBLS157G-T.
Is DBLS157G-T compatible with lead-free reflow soldering processes?
Yes, the DBLS157G-T features matte tin-plated leads compliant with J-STD-002 for solderability, and its DBLS package is rated for moisture sensitivity level 1 (MSL-1), meaning it can undergo standard lead-free reflow profiles (peak ~260°C) without baking. The molding compound meets UL 94V-0, ensuring no delamination or popcorning during thermal cycling.
What does the "G" suffix signify in DBLS157G-T?
The "G" in DBLS157G-T indicates halogen-free green compound per IEC 61249-2-21, verified by Taiwan Semiconductor's material declarations. It is not a grade or tolerance code. The "-T" denotes tape-and-reel packaging (1500 units per reel), and "157" specifies the 1000V VRRM rating within the DBLS15xG-T family.
Can DBLS157G-T replace DBLS156G-T in an existing design?
Yes, DBLS157G-T is a direct upgrade from DBLS156G-T (800V) with identical package, pinout, thermal specs, and electrical characteristics except for higher VRRM (1000V vs. 800V) and VR(RMS) (700V vs. 560V). No PCB or firmware changes are needed - it provides enhanced surge immunity while maintaining full functional and mechanical compatibility with DBLS156G-T.
DBLS157G-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):
- 1 kV
- Current - Average Rectified (Io):
- 1.5 A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 1.5 A
- Current - Reverse Leakage @ Vr:
- 2 µA @ 1000 V
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DBLS
DBLS157G-T FAQ
1.How can I place an order for DBLS157G-T through Aetrix?
Please submit a Request for Quotation (RFQ) for DBLS157G-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 DBLS157G-T reliable?
The price and inventory of DBLS157G-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DBLS157G-T is usually 5 days.
3.What payment methods are accepted for DBLS157G-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DBLS157G-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DBLS157G-T?
DBLS157G-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DBLS157G-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 DBLS157G-T?
For technical support, including DBLS157G-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DBLS157G-T requirements.
6.How does Aetrix verify that DBLS157G-T is sourced from the original manufacturer or authorized distributors?
All DBLS157G-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 DBLS157G-T meets industry standards.
7.What is the process for return or replacement of DBLS157G-T?
All DBLS157G-T units undergo pre-shipment inspection (PSI). If there is an issue with DBLS157G-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 DBLS157G-T part is unused and in its original packaging.
Return procedure for DBLS157G-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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