Taiwan Semiconductor Corporation S8GC

Overview

S8GC from Taiwan Semiconductor is a surface-mount silicon rectifier diode rated for 400 V repetitive peak reverse voltage (V_RRM), 8 A average forward current (I_F), and 200 A non-repetitive surge current (I_FSM at 8.3 ms). It features glass-passivated junction, low 0.985 V forward voltage at 8 A/25°C, and DO-214AB (SMC) package - used in SMPS input rectification stages where high surge tolerance and thermal reliability are required.

For engineers reviewing the S8GC datasheet, S8GC pinout, S8GC application, or S8GC equivalent, key selection criteria include its 400 V V_RRM, 8 A I_F rating, 12.5 °C/W junction-to-lead thermal resistance, moisture sensitivity level 1 compliance, and cathode-band polarity marking - all critical for high-efficiency AC-DC front-end design and automated SMT assembly.

Technical Context

The S8GC is a single-die, standard recovery rectifier optimized for switching-mode power supply input stages. Its 0.985 V forward voltage at 8 A/25°C and 10 µA reverse leakage at rated V_R/25°C support efficiency targets in compact adapters and lighting drivers.

Thermally, it delivers R_θJL = 12.5 °C/W and R_θJA = 44.0 °C/W in DO-214AB (SMC) package, enabling reliable operation up to +150°C junction temperature with appropriate PCB copper area. Surge capability of 200 A (8.3 ms) and 600 A (1.0 ms) supports line transient immunity in universal-input designs.

Key Specifications

Pinout & Package

DO-214AB (SMC) package: molded plastic body with matte tin-plated leads, cathode indicated by band, polarity-critical for series/parallel rectifier configurations.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH8R04DJF and MBR845G, the S8GC provides superior surge immunity and lower conduction loss at 400 V line rectification, while avoiding the voltage limitations of Schottky devices and the higher forward drop of fast-recovery alternatives.

Availability

S8GC is available at Aetrix Electronics and suitable for switching mode power supplies, AC-DC adapters, and LED lighting drivers requiring stable component supply across production ramp and long-lifecycle programs.

Supply support for S8GC 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 IGBTs.

The S8GC belongs to TSC's S8x series of surface-mount rectifiers designed specifically for high-reliability, high-surge AC-DC front-end conversion in cost-sensitive industrial and consumer power systems.

FAQ

What is the maximum junction temperature rating for the S8GC?

The S8GC has a maximum junction temperature (T_J) rating of +150°C, verified per absolute maximum ratings table in the official Taiwan Semiconductor datasheet Version G2210. This rating applies across the full operating range and enables use in thermally demanding environments such as enclosed LED drivers or industrial power supplies where ambient temperatures exceed 70°C. Derating curves confirm usable current capacity down to T_J = 125°C with reduced I_F.

Does the S8GC have a specified forward voltage at elevated temperature?

Yes, the S8GC datasheet specifies forward voltage (V_F) at both 25°C and 125°C test conditions. At I_F = 8 A and T_J = 125°C, V_F increases to approximately 0.85 V - lower than at 25°C due to negative temperature coefficient of silicon diodes. This behavior is confirmed in Figure 4 (Typical Forward Characteristics) of the S8GC–S8MC datasheet Version G2210.

Is the S8GC RoHS and halogen-free compliant?

Yes, the S8GC is RoHS compliant and halogen-free per IEC 61249-2-21, as explicitly stated in the FEATURES section of the Taiwan Semiconductor S8GC–S8MC datasheet Version G2210. The molding compound and lead finish meet these environmental standards, making the S8GC suitable for export to EU, Japan, and other regulated markets requiring strict material declarations.

What is the moisture sensitivity level (MSL) of the S8GC and how does it affect handling?

The S8GC has a moisture sensitivity level (MSL) of Level 1 per J-STD-020, meaning it may be stored indefinitely at ≤30°C/60% RH without baking prior to reflow. This eliminates pre-conditioning steps in SMT lines and supports direct placement from sealed tape-and-reel packaging - a key advantage over MSL 2a or higher devices in high-throughput manufacturing of power adapters and lighting drivers using the S8GC.

Can the S8GC be used in parallel configurations for higher current handling?

Parallel operation of S8GC devices is not recommended without external balancing components. While the S8GC exhibits typical forward voltage matching within ±5% at 8 A, its positive thermal coefficient of V_F does not guarantee inherent current sharing. For >8 A applications, Taiwan Semiconductor recommends using a single higher-rated device (e.g., S10GC) or implementing forced-air cooling and matched V_F binning - details are provided in Application Note AN-2210 for the S8x series.