Taiwan Semiconductor Corporation S8GC V7G

Overview

S8GC V7G from Taiwan Semiconductor is a surface-mount silicon rectifier diode rated for 8A average forward current and 400V repetitive peak reverse voltage in a DO-214AB (SMC) package. It features glass-passivated junction, low 0.985V forward voltage at 8A/25°C, and 200A surge capability - deployed in AC/DC front-end stages of compact switching power supplies.

For engineers reviewing the S8GC V7G datasheet, S8GC V7G pinout, S8GC V7G application, or S8GC V7G equivalent, key selection criteria include its 12.5°C/W junction-to-lead thermal resistance, J-STD-020 Level 1 moisture sensitivity, RoHS/halogen-free compliance, and cathode-band polarity marking for automated assembly verification.

Technical Context

This single-die standard recovery rectifier operates with a maximum junction temperature of 150°C and exhibits 10µA reverse leakage at 25°C and rated VR. Its 48pF junction capacitance at 1MHz/4V enables stable high-frequency rectification in flyback and boost converters without excessive ringing.

The device uses matte tin-plated leads compliant with J-STD-002 solderability and passes JESD201 Class 2 whisker testing. Thermal performance is defined by R_θJL = 12.5°C/W and R_θJA = 44.0°C/W, supporting conduction-cooled PCB layouts in space-constrained adapters and LED drivers.

Key Specifications

Pinout & Package

Package: DO-214AB (SMC), molded plastic case meeting UL 94V-0; cathode indicated by band on body; weight ≈0.270g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH8R04DJF and MBR840CT, the S8GC V7G delivers optimal balance of thermal robustness (150°C TJ), manufacturability (Level 1 MSL), and footprint efficiency (DO-214AB), making it preferred for compact, high-reliability AC/DC conversion where long-term stability outweighs marginal VF reduction.

Availability

S8GC V7G is available at Aetrix Electronics and suitable for AC/DC adapters, LED drivers, and industrial SMPS requiring stable component supply across multi-year production cycles.

Supply support for S8GC 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 power and signal conditioning markets since 1979.

The S8GC V7G belongs to TSC's S8x series of surface-mount rectifiers engineered specifically for high-efficiency, high-reliability offline power conversion in space-constrained consumer and industrial applications.

FAQ

What is the maximum junction temperature rating for the S8GC V7G?

The S8GC V7G has a maximum junction temperature (T_J) of +150°C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet. This allows sustained operation in enclosed power supplies where internal board temperatures exceed 100°C. Derating curves confirm usable current capacity down to 4.5A at 125°C ambient, ensuring design margin in thermally demanding environments. The S8GC V7G must not be operated beyond this limit to maintain reliability and warranty coverage.

Does the S8GC V7G have RoHS and halogen-free compliance?

Yes, the S8GC V7G is RoHS compliant and halogen-free per IEC 61249-2-21, as explicitly stated in the Taiwan Semiconductor product documentation. Its molding compound contains no brominated flame retardants or chlorine-based additives, and lead content is below 1000 ppm. This compliance is certified for both the die and package materials, making the S8GC V7G suitable for export to EU, Japan, and other regulated markets requiring full substance-level declarations.

What does the 'V7G' suffix indicate in S8GC V7G?

The 'V7G' suffix in S8GC V7G denotes a specific tape-and-reel packaging variant: 'V7' indicates 3,000-unit reel quantity per JIS C 0806 standard, and 'G' signifies green (halogen-free) compound per TSC internal coding. This matches the ordering code S8GC in the DO-214AB (SMC) package with tape-and-reel packing noted in the official datasheet. The S8GC V7G is not a voltage or temperature grade variant - electrical specs remain identical to base S8GC.

Can the S8GC V7G replace the S8JC or S8MC in an existing design?

No - the S8GC V7G is rated for 400V V_RRM, whereas S8JC is 600V and S8MC is 1000V. Substituting S8GC V7G into a design originally using S8JC or S8MC risks catastrophic failure under transient overvoltage conditions exceeding 400V. The marking codes (S8GC/S8JC/S8MC) correspond to distinct voltage grades within the same package family; they are not interchangeable without circuit-level revalidation of voltage stress margins and safety isolation.

What is the reverse leakage current specification for the S8GC V7G at elevated temperature?

At 125°C junction temperature and rated reverse voltage (400V), the S8GC V7G exhibits a maximum reverse leakage current (I_R) of 250 µA, per the Electrical Specifications table in the Taiwan Semiconductor datasheet. This value is measured under pulse conditions (PW = 30ms) and reflects worst-case behavior in high-temperature operation. At 25°C, leakage is limited to 10 µA, confirming stable blocking performance across the full industrial temperature range.