Taiwan Semiconductor Corporation S3K V7G

Overview

S3K V7G from Taiwan Semiconductor is a 800V, 3A surface-mount silicon rectifier diode in DO-214AB (SMC) package, featuring 100A surge current capability, 1.15V max forward voltage at 3A/25°C, and 1500ns reverse recovery time; used in high-efficiency AC/DC converters and industrial power adapters.

For engineers reviewing the S3K V7G datasheet, S3K V7G pinout, S3K V7G application, or S3K V7G equivalent, key selection criteria include repetitive peak reverse voltage (800V), thermal resistance (R_θJL = 13°C/W), junction temperature range (–55°C to +150°C), and RoHS/halogen-free compliance for automotive-grade power supply designs.

Technical Context

This device is a single-die, glass-passivated standard recovery rectifier optimized for switching-mode power supplies operating up to 100 kHz. Its 1500ns trr and 60pF junction capacitance support moderate-frequency rectification with low switching loss trade-offs.

The DO-214AB (SMC) package provides robust thermal performance (R_θJA = 47°C/W) and moisture sensitivity level 1 handling, enabling direct placement on high-density PCBs without baking. Cathode polarity is marked by a visible band on the molded body.

Key Specifications

Pinout & Package

DO-214AB (SMC) surface-mount package: molded plastic body with matte tin-plated leads, cathode indicated by band, JEDEC-compliant outline, 0.210g mass, UL 94V-0 rated compound.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH3L08S and MUR3080CT, the S3K V7G delivers optimal balance of cost, thermal performance, and manufacturability for mid-frequency SMT rectification-offering lower V_F than ultrafast alternatives and smaller footprint than through-hole equivalents.

Availability

S3K V7G is available at Aetrix Electronics and suitable for industrial power adapters, LED drivers, telecom wall adapters, and industrial SMPS requiring stable component supply with full traceability and lifecycle management.

Supply support for S3K V7G 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 S3A–S3M series was designed specifically for cost-effective, high-reliability AC/DC rectification in space-constrained SMT power supplies, emphasizing ruggedness, process consistency, and J-STD-020 compliance.

FAQ

What is the maximum junction temperature rating for the S3K V7G?

The S3K V7G has a maximum junction temperature (T_JMAX) of +150°C, verified per absolute maximum ratings table in the official Taiwan Semiconductor datasheet (Version O2301). This rating allows reliable operation in enclosed industrial environments where case temperatures may reach 100°C. Derating curves confirm usable current capacity down to –55°C ambient. The S3K V7G must be mounted on PCB copper sufficient to maintain junction temperature below this limit under worst-case load conditions.

Does the S3K V7G meet RoHS and halogen-free requirements?

Yes, the S3K V7G is certified RoHS compliant and halogen-free per IEC 61249-2-21 and Taiwan Semiconductor's material declarations. The molding compound contains no brominated flame retardants, chlorine, or fluorine above threshold limits. This compliance is confirmed in the "Features" section of the official datasheet (Version O2301) and supports use in environmentally regulated markets including EU, Japan, and China. The S3K V7G carries no substance-of-concern exemptions.

What is the reverse recovery time (t_rr) specification for the S3K V7G?

The S3K V7G has a reverse recovery time (t_rr) of 1500 ns, measured under IF = 0.5A, IR = 1.0A, and Irr = 0.25A per the electrical specifications table in the Taiwan Semiconductor datasheet (Version O2301). This value reflects its classification as a standard recovery rectifier-not an ultrafast or soft-recovery type. The S3K V7G is suited for 60–120 kHz SMPS applications where moderate t_rr balances conduction loss and switching loss.

Is the S3K V7G pin-compatible with other devices in the S3x family?

Yes, all S3x devices-including S3K V7G-share identical DO-214AB (SMC) package dimensions, pinout, and thermal pad layout per JEDEC DO-214AB Variation AB. Anode and cathode terminals are physically interchangeable across the series. Voltage rating differences (50V–1000V) do not affect mechanical fit or soldering profile. The S3K V7G can be substituted for S3J or S3M in existing footprints if voltage derating and thermal margins are verified.

What packaging format is available for the S3K V7G?

The S3K V7G is supplied in tape-and-reel format: 3,000 units per reel, compatible with standard SMT pick-and-place equipment. Reel dimensions and orientation follow EIA-481-D standards. Each reel includes full traceability data (lot code, date code YW, factory code F) printed on the label. No bulk or tube options are offered for the S3K V7G; all orders ship in this industry-standard SMT packaging configuration.