My Inquiry
My Account
Taiwan Semiconductor Corporation DBL103G
- Part No.:
- DBL103G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Bridge Rectifiers
- Package:
- 4-DIP (0.300", 7.62mm)
- Datasheet:
-
DBL103G.pdf
- Description:
- BRIDGE RECT 1PHASE 200V 1A DBL
- Quantity:
- Payment:
- Shipping:
Inventory:3,598
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
DBL103G from Taiwan Semiconductor is a 1A, 200V repetitive peak reverse voltage (VRRM) standard bridge rectifier in DBL package, featuring quad diode configuration, 40A peak forward surge current (IFSM), 1.1V max forward voltage at 1A, and AEC-Q101 qualification option. It serves as AC-to-DC conversion core in compact off-line power supplies.
For engineers reviewing the DBL103G datasheet, DBL103G pinout, DBL103G application, or DBL103G equivalent, key selection criteria include VRRM margin for 115/230VAC input stages, IFSM headroom for cold-start surges, thermal resistance (RθJA = 40°C/W), and RoHS/halogen-free compliance for industrial and automotive-grade designs.
Technical Context
The DBL103G integrates four silicon junction diodes in a single-phase full-wave bridge configuration with common-cathode and common-anode terminals. Its 200V VRRM rating targets universal-input SMPS front-ends where derated operation ensures reliability under line transients.
Thermally, it uses molded plastic DBL package with matte tin-plated leads (J-STD-002 compliant) and achieves RθJL = 15°C/W to lead, enabling 1A continuous conduction at ≤70°C ambient without heatsinking. Junction temperature range is −55°C to +150°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - supports 115VAC nominal input with ≥2× safety margin against line spikes |
| IF(AV) | 1 A - rated average forward current for continuous DC output up to ~12W at 12V |
| IFSM | 40 A - withstands single 8.3ms half-sine surge, critical for inrush limiting in adapters |
| VF(max) | 1.1 V @ 1A, 25°C - total bridge drop ≤2.2V, minimizing conduction loss in low-voltage outputs |
| RθJA | 40 °C/W - allows 1A operation at 70°C ambient on 1-in² FR-4 PCB with 2oz copper |
| IR(max) | 2 µA @ 25°C, 500 µA @ 125°C - low leakage preserves efficiency in standby mode |
| Package | DBL - surface-mountable molded plastic case, UL 94V-0 rated, 0.36g weight |
Pinout & Package
DBL package is a compact, surface-mountable molded plastic housing with 4 external terminals: two AC inputs (±) and two DC outputs (+/−). Leads are matte tin-plated per J-STD-002 and pass JESD201 Class 2 whisker test.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ~ (AC1) | AC Input Terminal 1 | One leg of AC input; connected internally to anode of D1 and cathode of D2 |
| ~ (AC2) | AC Input Terminal 2 | Second leg of AC input; connected internally to anode of D3 and cathode of D4 |
| + (DC+) | Positive DC Output | Common cathode node of D1 and D3; delivers rectified positive rail |
| – (DC–) | Negative DC Output | Common anode node of D2 and D4; serves as return/reference ground path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified version available | Enables use in automotive body electronics and infotainment power rails without additional qualification effort |
| UL Recognized (E-326854) | Meets end-equipment safety certification requirements for Class II isolated power supplies |
| Halogen-free (IEC 61249-2-21) | Complies with environmental regulations for consumer and industrial products sold in EU/Asia |
| High IFSM (40A) | Supports robust startup in capacitor-input filter designs without fuse coordination issues |
| Low VF and IR over temperature | Maintains efficiency in thermally constrained enclosures such as LED drivers and wall adapters |
Applications
| LED Lighting Driver | USB Wall Adapter |
|---|---|
Use Scenario: AC mains-fed constant-current LED driver for commercial downlights. IC Role / Device Role / Timing Role: Primary-side bridge rectifier converting 230VAC to pulsating DC before bulk capacitor and flyback controller. Use Value: 200V VRRM provides 2.3× margin over 230VAC peak (325V), ensuring long-term reliability under brownouts and surges. | Use Scenario: Compact 5V/2A USB charging adapter with minimal footprint. IC Role / Device Role / Timing Role: Input rectification stage feeding a 65kHz flyback converter with capacitor-input filter. Use Value: 40A IFSM handles 10× inrush current during cold start into 220µF bulk cap, eliminating need for NTC thermistor. |
| Industrial PLC Power Module | Smart Home Gateway Power Supply |
Use Scenario: 24VDC auxiliary supply inside DIN-rail mounted programmable logic controller. IC Role / Device Role / Timing Role: Mains rectification for isolated 24V output using dual-output flyback transformer. Use Value: RθJA = 40°C/W enables full 1A load at 70°C ambient on standard 4-layer PCB-no heatsink required. | Use Scenario: Multi-rail power supply (3.3V/5V/12V) in Wi-Fi/Zigbee gateway with space-constrained layout. IC Role / Device Role / Timing Role: First-stage AC/DC conversion feeding PFC-less quasi-resonant flyback. Use Value: Halogen-free and RoHS-compliant DBL package meets CE/UKCA marking requirements for residential IoT devices. |
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 1A/200V rating, GBU package (larger, through-hole), RθJA ≈ 50°C/W | Requires PCB hole drilling; less suitable for high-density SMT layouts | Preferred where legacy through-hole assembly or higher surge margin (60A IFSM) is prioritized over size |
| GBU6K | 6A rating, same 200V VRRM, GBU package, IFSM = 175A | Over-spec'd current capacity increases cost and board area without benefit in 1A designs | Only justified if future-proofing for higher-power variants or shared BOM across multiple SKUs |
Compared with GBU2K and GBU6K, the DBL103G delivers optimal size-efficiency balance for 1A-class SMT power supplies-its DBL package saves >40% board area versus GBU, while maintaining AEC-Q101 availability and halogen-free compliance not offered by most GBU alternatives.
Availability
DBL103G is available at Aetrix Electronics and suitable for switching mode power supplies, LED lighting drivers, and USB wall adapters requiring stable component supply, consistent parametric performance, and long-term lifecycle support.
Supply support for DBL103G 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 DBL103G belongs to TSC's standard bridge rectifier product line, engineered for cost-sensitive, high-volume AC/DC front-end applications where reliability, regulatory compliance, and thermal performance are prioritized over ultra-low VF or ultra-high surge ratings.
FAQ
What is the peak repetitive reverse voltage (VRRM) rating of DBL103G?
The DBL103G has a VRRM rating of 200 V, verified per Taiwan Semiconductor's DBL101G–DBL107G datasheet Revision R2103. This value is fixed for the "103" variant and reflects the maximum allowable reverse voltage across the bridge under repetitive conditions. It is designed to safely handle 230VAC input with sufficient margin against line transients and surges.
Is DBL103G suitable for automotive applications?
Yes - the DBL103G is available in an AEC-Q101 qualified version (marked as DBL103GH), which undergoes stress testing per the AEC-Q101 standard for discrete semiconductors. The base DBL103G is not AEC-Q101 certified; only the "H" suffix variant meets automotive reliability requirements for under-hood and cabin electronics.
What is the forward voltage drop of DBL103G at rated current?
The DBL103G exhibits a maximum forward voltage (VF) of 1.1 V per diode at IF = 1 A and TJ = 25°C, resulting in a total bridge drop of ≤2.2 V under full-load DC conduction. This value is measured under pulsed conditions (PW = 0.3 ms) and remains stable across its operating junction temperature range.
Does DBL103G have halogen-free and RoHS-compliant construction?
Yes - the DBL103G uses halogen-free molding compound per IEC 61249-2-21 and is fully RoHS compliant. These attributes are confirmed in the official Taiwan Semiconductor DBL101G–DBL107G datasheet (R2103), and the "G" suffix explicitly denotes green (halogen-free/RoHS) material content.
What is the thermal resistance from junction to ambient (RθJA) for DBL103G?
The DBL103G has a typical junction-to-ambient thermal resistance (RθJA) of 40°C/W when mounted on a standard FR-4 PCB with 1-inch² copper pad. This value assumes natural convection cooling and is specified in the Thermal Performance section of the DBL101G–DBL107G datasheet (R2103), enabling 1A continuous operation at up to 70°C ambient temperature.
DBL103G 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):
- 200 V
- Current - Average Rectified (Io):
- 1 A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 1 A
- Current - Reverse Leakage @ Vr:
- 2 µA @ 200 V
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DBL
DBL103G FAQ
1.How can I place an order for DBL103G through Aetrix?
Please submit a Request for Quotation (RFQ) for DBL103G 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 DBL103G reliable?
The price and inventory of DBL103G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DBL103G is usually 5 days.
3.What payment methods are accepted for DBL103G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DBL103G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DBL103G?
DBL103G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DBL103G 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 DBL103G?
For technical support, including DBL103G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DBL103G requirements.
6.How does Aetrix verify that DBL103G is sourced from the original manufacturer or authorized distributors?
All DBL103G 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 DBL103G meets industry standards.
7.What is the process for return or replacement of DBL103G?
All DBL103G units undergo pre-shipment inspection (PSI). If there is an issue with DBL103G, 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 DBL103G part is unused and in its original packaging.
Return procedure for DBL103G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DBL103G Tags
-
HDS10M-13
Diodes Incorporated
-
CD-MBL106S
Bourns Inc.
-
MB10S-13
Diodes Incorporated
-
CD-MBL206SL
Bourns Inc.
-
MB4S-TP
Micro Commercial Co
-
MB6S-TP
Micro Commercial Co
-
CD-MBL210S
Bourns Inc.
-
BAS3007ARPPE6327HTSA1
Infineon Technologies
-
DF02M
Diodes Incorporated
-
CD-MBL210SL
Bourns Inc.
-
DF04M
Diodes Incorporated
-
DF01M
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
