Taiwan Semiconductor Corporation DBLS209G C1G

Overview

DBLS209G from Taiwan Semiconductor is a 2 A, 1400 V repetitive peak reverse voltage (V_RRM) standard quad bridge rectifier in DBLS surface-mount package, featuring 50 A peak forward surge current (I_FSM), 1.30 V max forward voltage at 2 A/25°C, and AEC-Q101 qualification option (DBLS209GH). It serves as the AC-to-DC front-end rectification stage in high-voltage offline power supplies.

For engineers reviewing the DBLS209G datasheet, DBLS209G pinout, DBLS209G application, or DBLS209G equivalent, key selection criteria include V_RRM margin for 1000 VAC input designs, thermal resistance (R_θJA = 40 °C/W), surge robustness (I₂t = 10.3 A²s), and RoHS/halogen-free compliance for automotive and industrial end equipment.

Technical Context

The DBLS209G integrates four silicon diodes in a single-phase full-wave bridge configuration with common-cathode and common-anode terminals externally accessible. Its DBLS package uses matte tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance.

Rated for junction temperatures from –55°C to +150°C and moisture sensitivity level 1 (J-STD-020), it supports reflow soldering without baking. The device exhibits 2 µA max reverse leakage at 25°C and 500 µA at 125°C under rated V_R, enabling stable operation in thermally demanding environments.

Key Specifications

Pinout & Package

DBLS209G is housed in a molded plastic DBLS surface-mount package (UL 94V-0 rated), measuring 10.5 mm × 8.0 mm × 2.7 mm (L × W × H), with gull-wing leads spaced 2.54 mm apart. Polarity is marked on top surface per device marking diagram.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar bridge rectifier applications.

Compared with VS-GBPC3514W and GBPC3514, DBLS209G offers optimal balance of 2 A rating, ultra-compact DBLS SMT footprint, and AEC-Q101 availability-making it uniquely suited for space-constrained, automotive-qualified, or high-volume consumer power supplies where thermal management is handled via PCB copper area rather than heatsinking.

Availability

DBLS209G is available at Aetrix Electronics and suitable for switching mode power supplies, LED lighting drivers, and universal-input adapters requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for DBLS209G 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, MOSFETs, and bipolar transistors since 1979.

The DBLS201G–DBLS209G series was developed to deliver high-voltage, surface-mount bridge rectifiers with automotive-grade reliability, tight parameter distribution, and optimized thermal performance for next-generation compact power conversion systems.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) specified for DBLS209G?

The DBLS209G has a V_RRM rating of 1400 V, as confirmed in the Absolute Maximum Ratings table on page 1 of the official Taiwan Semiconductor datasheet (Version J2103). This value applies specifically to DBLS209G and distinguishes it from lower-voltage variants like DBLS201G (50 V) or DBLS205G (600 V). The 1400 V rating enables use in 1000 VAC systems with adequate safety margin.

Is DBLS209G suitable for automotive applications?

Yes-while the base DBLS209G is not AEC-Q101 qualified, the pin-identical DBLS209GH variant is explicitly qualified per AEC-Q101. Both share identical electrical parameters and DBLS package dimensions. For automotive designs requiring stress-tested reliability, DBLS209GH must be specified; the 'H' suffix denotes qualification, and its test reports are available from Taiwan Semiconductor upon request.

What is the forward voltage (V_F) of DBLS209G at rated current?

Per the Electrical Specifications table (page 2), DBLS209G has a maximum forward voltage of 1.30 V at I_F = 2 A and T_J = 25°C. This value is measured per diode under pulse conditions (PW = 0.3 ms), and represents worst-case conduction loss across the bridge's two-series diode path, resulting in ≤2.6 V total drop at full load.

Does DBLS209G require moisture baking before reflow soldering?

No-DBLS209G is rated at Moisture Sensitivity Level 1 per J-STD-020, meaning it may be stored indefinitely in ambient conditions and placed directly into reflow without pre-baking. This eliminates process steps and reduces risk of lead oxidation or delamination, supporting high-yield SMT assembly in standard production lines.

What is the thermal resistance from junction to ambient (R_θJA) for DBLS209G?

The datasheet specifies R_θJA = 40 °C/W for DBLS209G under standard JEDEC test conditions (single-layer 1 in² copper pad). This value assumes minimal PCB copper; actual thermal performance improves significantly with added thermal vias and internal copper planes. For 2 A continuous operation at 70°C ambient, ≥1.5 cm² of 2-oz external copper is recommended to maintain T_J ≤125°C.