Taiwan Semiconductor Corporation S3A V6G

Overview

S3A V6G from Taiwan Semiconductor is a 3 A, 50 V surface-mount silicon rectifier diode in DO-214AB (SMC) package, featuring 1.15 V max forward voltage at 3 A and 100 A non-repetitive surge capability, used in AC/DC front-end stages of switching mode power supplies.

For engineers reviewing the S3A V6G datasheet, S3A V6G pinout, S3A V6G application, or S3A V6G equivalent, key selection criteria include repetitive peak reverse voltage (50 V), thermal resistance (R_θJL = 13 °C/W), junction temperature range (–55 to +150 °C), and RoHS/halogen-free compliance for industrial adapter and lighting converter designs.

Technical Context

This single-die standard recovery rectifier uses glass-passivated junction technology to ensure stable reverse leakage (<10 µA at 25 °C) and robust surge handling (100 A, 8.3 ms). Its DO-214AB (SMC) package supports automated placement and meets JESD201 Class 2 whisker resistance.

Thermal performance is defined by R_θJL = 13 °C/W and R_θJA = 47 °C/W, enabling reliable operation up to 150 °C junction temperature. Reverse recovery time is 1500 ns under IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A conditions.

Key Specifications

Pinout & Package

DO-214AB (SMC) surface-mount package with cathode-indicated band; molded plastic body per JEDEC DO-214AB, UL 94V-0 rated, matte tin-plated leads solderable per J-STD-002.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MUR350 and VS-3A50, the S3A V6G delivers identical 3 A/50 V ratings and thermal resistance but adds moisture sensitivity level 1 and halogen-free compliance-reducing process overhead while maintaining compatibility in legacy DO-214AB layouts.

Availability

S3A V6G is available at Aetrix Electronics and suitable for switching mode power supplies, AC/DC adapters, and LED lighting converters requiring stable component supply, full traceability, and long-term production continuity.

Supply support for S3A V6G 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 industrial, computing, and consumer markets since 1979.

The S3A V6G belongs to TSC's S3x series of surface-mount rectifiers, engineered for cost-effective, high-reliability AC/DC conversion in space-constrained power supplies where thermal robustness and process simplicity are prioritized.

FAQ

What is the maximum junction temperature rating for the S3A V6G?

The S3A V6G has a maximum junction temperature (T_J) of +150 °C and a minimum of –55 °C. This wide operating range allows deployment in enclosed industrial power supplies and outdoor LED drivers without active cooling. The device's R_θJL of 13 °C/W enables effective heat transfer to the PCB, making the S3A V6G suitable for thermally demanding applications where the S3A V6G operates near its thermal limits.

Does the S3A V6G meet RoHS and halogen-free requirements?

Yes, the S3A V6G is RoHS compliant and halogen-free per IEC 61249-2-21. These certifications are confirmed in TSC's official product documentation and verified through material declarations. The S3A V6G satisfies environmental compliance for export to EU, Japan, and China markets, and its halogen-free status eliminates corrosive gas emission risks during reflow or field failure-critical for the S3A V6G's use in sealed lighting fixtures and industrial controls.

What is the reverse recovery time (trr) specification for the S3A V6G?

The S3A V6G has a reverse recovery time (trr) of 1500 ns under test conditions of IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This value is typical for standard recovery rectifiers and aligns with its intended use in 50–100 kHz SMPS topologies. Designers should account for this trr when sizing snubbers or selecting synchronous rectification alternatives. The S3A V6G's trr is fully characterized in TSC's O2301 datasheet revision.

Is the S3A V6G suitable for automated SMT assembly?

Yes, the S3A V6G is optimized for automated placement with DO-214AB (SMC) packaging, moisture sensitivity level 1 (no bake required), and J-STD-002-compliant matte tin leads. Its standardized footprint and marking (S3A laser etch) support vision-based pick-and-place alignment. The S3A V6G is supplied in 3,000-piece tape-and-reel format compatible with industry-standard feeders, making it ideal for high-volume SMT lines producing adapters and lighting drivers.

How does the S3A V6G compare to other S3x family members like S3G or S3M?

The S3A V6G is the 50 V variant in the S3x family; S3G is rated for 400 V and S3M for 1000 V. All share identical package (DO-214AB), thermal specs (R_θJL = 13 °C/W), and electrical characteristics except VRRM, VR(RMS), and IR (which increases with voltage rating). The S3A V6G is selected specifically for low-voltage AC inputs (e.g., 120 VAC systems), whereas S3G/S3M serve 277 VAC or three-phase rectification. Pinout and layout are identical across the S3x series, including the S3A V6G.