Taiwan Semiconductor Corporation SK515C M6G

Overview

SK515C M6G from Taiwan Semiconductor is a 5A, 150V Schottky barrier surface-mount rectifier in DO-214AB (SMC) package, optimized for high-efficiency switching power supplies with low forward voltage (0.95V @ 5A, 25°C) and high surge capability (120A IFSM). It serves as the output rectifier in AC/DC adapters and DC/DC converters where low conduction loss and thermal robustness are critical.

For engineers reviewing the SK515C M6G datasheet, SK515C M6G pinout, SK515C M6G application, or SK515C M6G equivalent, key selection factors include its 150V VRRM rating, 0.95V forward drop at full rated current, 13°C/W junction-to-lead thermal resistance, moisture sensitivity level 1 compliance, and cathode-band polarity marking - all verified per Taiwan Semiconductor S2311 specification.

Technical Context

The SK515C M6G employs a single-die Schottky structure with guard ring overvoltage protection, enabling stable operation up to 150V reverse blocking while maintaining fast recovery (no stored charge, inherently soft recovery). Its 120A non-repetitive surge rating supports transient load demands in SMPS secondary-side rectification without derating.

Thermally, it achieves 13°C/W junction-to-lead resistance when mounted on a 16mm × 16mm Cu pad, allowing 5A continuous conduction at ≤105°C ambient without forced cooling. The device operates across –55°C to +150°C junction temperature range and exhibits only 0.3mA reverse leakage at 25°C and 5mA at 125°C under rated VR.

Key Specifications

Pinout & Package

Package: DO-214AB (SMC), surface-mount, matte tin-plated leads, cathode indicated by molded band. Weight: 0.210 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-50SQ150 and SB5150, the SK515C M6G delivers balanced performance: its 0.95V VF and 0.3mA IR optimize efficiency across full load range, while DO-214AB mechanical compatibility and 13°C/W RθJL support robust thermal management in industrial and adapter applications without layout redesign.

Availability

SK515C M6G is available at Aetrix Electronics and suitable for switching mode power supplies, LED drivers, and USB PD power delivery modules requiring stable component supply, J-STD-020 Level 1 moisture handling, and RoHS-compliant sourcing.

Supply support for SK515C M6G 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 semiconductor manufacturer specializing in discrete power devices, including Schottky rectifiers, MOSFETs, and TVS diodes, with ISO 9001 and IATF 16949 certification.

The SK515C M6G belongs to TSC's SK5xC family of high-current Schottky rectifiers designed specifically for high-efficiency, high-reliability secondary-side rectification in compact AC/DC and DC/DC power converters.

FAQ

What is the maximum junction temperature rating for SK515C M6G?

The SK515C M6G has a maximum junction temperature (TJ MAX) of +150°C, verified per Taiwan Semiconductor S2311 specification. This rating allows continuous 5A operation in industrial environments up to 105°C ambient when mounted on a 16mm × 16mm copper pad, leveraging its 13°C/W junction-to-lead thermal resistance. Derating begins above 105°C ambient per the forward current derating curve in Figure 1 of the SK52C–SK520C datasheet.

Does SK515C M6G support lead-free reflow soldering?

Yes, SK515C M6G supports lead-free reflow soldering per J-STD-002. Its matte tin-plated leads are qualified for peak temperatures up to 260°C with 10-second dwell time, and the UL 94V-0 molding compound remains stable under standard JEDEC J-STD-020 profile conditions. Moisture sensitivity level 1 eliminates pre-bake requirements, streamlining SMT line integration.

What is the reverse leakage current of SK515C M6G at elevated temperature?

At 150V reverse bias and 125°C junction temperature, the SK515C M6G exhibits ≤5mA reverse leakage current (IR), per Table "ELECTRICAL SPECIFICATIONS" in the S2311 datasheet. At 25°C, IR is ≤0.3mA - a value critical for meeting USB PD 3.0 no-load power budgets. This temperature-dependent leakage is confirmed across the SK515C–SK520C group and validated via pulse testing (PW = 30ms).

Is SK515C M6G pin-compatible with other DO-214AB Schottky rectifiers?

Yes, SK515C M6G uses the industry-standard DO-214AB (SMC) package with identical mechanical dimensions and cathode-band polarity marking as other DO-214AB rectifiers, including Vishay VS-50SQ150 and ON Semiconductor SB5150. Its anode and cathode terminals align directly with those parts, enabling drop-in replacement in existing layouts without PCB modification.

How does the guard ring feature improve reliability in SK515C M6G?

The guard ring in SK515C M6G prevents premature edge breakdown under high-voltage stress by controlling electric field distribution at the die periphery. This structural enhancement enables stable 150V VRRM operation across temperature and lifetime, particularly in applications with voltage transients such as AC/DC adapters subjected to line surges. It is explicitly cited as a feature in the S2311 datasheet and contributes to TSC's AEC-Q101 qualification pathway for power discretes.