Taiwan Semiconductor Corporation S8MC V7G

Overview

S8MC V7G from Taiwan Semiconductor is an 8A, 1000V surface-mount silicon rectifier diode in DO-214AB (SMC) package, featuring glass-passivated junction, low forward voltage drop (max 0.985 V at 8 A), high surge capability (200 A @ 8.3 ms), and RoHS/halogen-free compliance. It serves as the primary output rectifier in high-voltage SMPS and AC-DC adapters.

For engineers reviewing the S8MC V7G datasheet, S8MC V7G pinout, S8MC V7G application, or S8MC V7G equivalent, key selection criteria include peak reverse voltage rating (1000 V), thermal resistance (R_θJL = 12.5 °C/W), moisture sensitivity level (MSL 1), cathode-band polarity marking, and tape-and-reel packaging (3000 pcs/reel).

Technical Context

The S8MC V7G is a single-die, standard recovery rectifier optimized for high-efficiency, high-voltage DC output stages. Its 1000 V V_RRM, 200 A I_FSM (8.3 ms), and 150 °C maximum junction temperature support robust operation in industrial and universal-input power supplies.

Thermal performance is defined by R_θJL = 12.5 °C/W and R_θJA = 44.0 °C/W, with junction capacitance of 48 pF at 1 MHz and 4.0 V reverse bias. Reverse leakage remains ≤10 µA at 25 °C and ≤250 µA at 125 °C under rated V_R.

Key Specifications

Pinout & Package

DO-214AB (SMC) package: molded plastic body, matte tin-plated leads, cathode indicated by band, weight ≈ 0.270 g. Meets UL 94V-0 and JESD201 Class 2 whisker requirements.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH8L06W and VS-8EWH10FN-M3, the S8MC V7G uniquely combines 1000 V rating, MSL Level 1, low V_F, and DO-214AB SMT compatibility-making it optimal for cost-sensitive, high-volume, high-voltage adapter and SMPS designs requiring zero process overhead.

Availability

S8MC V7G is available at Aetrix Electronics and suitable for switching mode power supplies, AC-DC adapters, and LED driver converters requiring stable component supply, full traceability, and consistent lead-time performance.

Supply support for S8MC 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 electronics and industrial markets since 1979.

The S8MC V7G belongs to TSC's S8x series of high-voltage surface-mount rectifiers, engineered specifically for reliable, high-efficiency AC-DC conversion in cost-sensitive, high-volume power supply applications.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) of the S8MC V7G?

The S8MC V7G has a maximum repetitive peak reverse voltage (V_RRM) of 1000 V, as confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version G2210). This rating applies across the full operating temperature range and defines the highest reverse voltage the device can block continuously without breakdown. The S8MC V7G is the 1000 V variant in the S8GC–S8MC family, distinguished by its "MC" marking code.

Does the S8MC V7G have a specified forward voltage (V_F) at rated current?

Yes, the S8MC V7G has a maximum forward voltage (V_F) of 0.985 V at 8 A forward current and 25 °C junction temperature, per the Electrical Specifications table. This value is measured under pulsed conditions (PW = 0.3 ms) to avoid self-heating effects. At 125 °C, V_F decreases slightly due to semiconductor physics, but the datasheet specifies only the 25 °C limit for design margining. The S8MC V7G's low V_F directly contributes to reduced conduction losses in high-current power stages.

What is the package type and moisture sensitivity level (MSL) of the S8MC V7G?

The S8MC V7G is packaged in DO-214AB (SMC), a standard surface-mount outline with 7.75 mm × 6.25 mm body dimensions and cathode band polarity indication. Its moisture sensitivity level is MSL Level 1 per J-STD-020, meaning it has unlimited floor life and may be processed using standard reflow profiles without pre-baking. This MSL rating is explicitly stated in the Features section of the Taiwan Semiconductor documentation for the S8MC V7G.

Can the S8MC V7G replace the S8KC or S8JC in an existing design?

The S8MC V7G is not a direct drop-in replacement for S8KC (800 V) or S8JC (600 V) due to its higher 1000 V V_RRM rating and associated electrical characteristics. While physically identical in DO-214AB package and pinout, substituting S8MC V7G may alter thermal behavior and reverse leakage (e.g., IR ≤10 µA at 25 °C for S8MC vs. same test condition for others). Use S8MC V7G only where 1000 V blocking is required; for lower-voltage designs, S8KC or S8JC remain appropriate and more cost-optimized choices.

What are the thermal resistance values for the S8MC V7G?

The S8MC V7G has a junction-to-lead thermal resistance (R_θJL) of 12.5 °C/W and a junction-to-ambient thermal resistance (R_θJA) of 44.0 °C/W, both measured under standard test conditions per the Thermal Performance section. R_θJL reflects heat transfer from die to PCB copper via the leads-critical for estimating temperature rise under high-current operation with copper pour heatsinking. R_θJA assumes no added heatsink and is used for worst-case ambient-limited derating analysis. These values are specific to the S8MC V7G and validated in the official Taiwan Semiconductor datasheet.