Taiwan Semiconductor Corporation S15GC

Overview

S15GC from Taiwan Semiconductor is a 15A, 400V surface-mount silicon rectifier diode in DO-214AB (SMC) package, featuring glass-passivated junction, 1.1V max forward voltage at 15A/25°C, 350A peak surge capability, and J-STD-020 Level 1 moisture sensitivity - used in freewheeling paths of switching-mode power supplies for telecom and computing systems.

For engineers reviewing the S15GC datasheet, S15GC pinout, S15GC application, or S15GC equivalent, key selection criteria include repetitive peak reverse voltage (400V), thermal resistance (R_θJL = 8°C/W), junction temperature range (–55°C to +150°C), RoHS/halogen-free compliance, and SMC package compatibility with automated placement.

Technical Context

The S15GC is a single-die, standard recovery rectifier optimized for high-current freewheeling and output rectification in 60Hz–100kHz SMPS topologies. Its glass-passivated junction ensures stable reverse leakage (<1µA @ 25°C, <250µA @ 125°C) and robust surge tolerance under 8.3ms half-sine stress.

Thermally, it delivers R_θJL = 8°C/W and R_θJA = 44°C/W in standard PCB mounting, enabling reliable 15A continuous conduction without forced air when ambient stays ≤75°C. Polarity is marked by cathode band per JEDEC DO-214AB outline.

Key Specifications

Pinout & Package

DO-214AB (SMC) surface-mount package: molded epoxy case meeting UL 94V-0, matte tin-plated leads compliant with J-STD-002 solderability, cathode polarity indicated by visible band.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MUR1540 and VS-15EWH04-M3, the S15GC offers lower thermal resistance than the former and broader commercial qualification than the latter - making it optimal for cost-sensitive, high-volume telecom and server power supplies where J-STD-020 Level 1 handling and halogen-free compliance are mandatory.

Availability

S15GC is available at Aetrix Electronics and suitable for telecom power rectification, server PSU freewheeling, and industrial SMPS input stages requiring stable component supply, RoHS/halogen-free compliance, and J-STD-020 Level 1 moisture handling.

Supply support for S15GC 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 rectifiers, TVS diodes, MOSFETs, and bipolar transistors since 1979.

The S15GC belongs to TSC's S15x series of surface-mount rectifiers designed specifically for high-current, high-reliability power conversion in computing, communications, and industrial equipment - emphasizing thermal performance, automated assembly readiness, and environmental compliance.

FAQ

What is the maximum junction temperature rating for the S15GC?

The S15GC has a maximum junction temperature (T_J) rating of +150°C, with an operational range from –55°C to +150°C. This allows reliable use in sealed enclosures or high-ambient environments such as telecom rectifier modules and industrial power supplies. The S15GC's R_θJL of 8°C/W supports effective heat transfer to PCB copper, helping maintain safe junction temperatures under 15A continuous load.

Does the S15GC have a defined pinout or terminal configuration?

Yes - the S15GC uses a two-terminal DO-214AB (SMC) package with clearly defined anode and cathode terminals. The cathode is marked by a visible band on the device body. In circuit implementation, the anode connects to the switch node or transformer secondary, and the cathode connects to the output rail or filter capacitor. This polarity must be observed during PCB layout and automated placement to ensure correct rectification function.

Is the S15GC suitable for automated SMT assembly?

Yes - the S15GC is explicitly designed for automated placement, with J-STD-020 Level 1 moisture sensitivity (no bake required), matte tin-plated leads compliant with J-STD-002 solderability, and a standardized DO-214AB (SMC) footprint. Its 0.270g weight and symmetrical lead geometry support high-yield pick-and-place operations in high-volume manufacturing lines producing telecom and server power supplies using the S15GC.

What is the forward voltage specification of the S15GC at rated current?

The S15GC has a maximum forward voltage (V_F) of 1.1 V at 15 A and 25°C junction temperature, measured under pulse conditions (PW = 0.3 ms). This low V_F reduces conduction losses to ≤16.5 W at full rated current, directly improving system efficiency and easing thermal management in space-constrained applications like 48V telecom rectifiers and server VRMs where the S15GC is commonly deployed.

How does the S15GC compare to other members of the S15x family?

The S15GC is the 400V variant in the S15x family (S15GC/S15JC/S15KC/S15MC), sharing identical 15A current rating, DO-214AB package, thermal specs (R_θJL = 8°C/W), and construction - only V_RRM differs (400V/600V/800V/1000V). All variants use the same marking code structure and tape-and-reel packaging (3,000 pcs/reel), allowing flexible BOM management across voltage grades while maintaining layout and assembly compatibility for the S15GC and its siblings.