Taiwan Semiconductor Corporation SK520C M6G

Overview

SK520C M6G from Taiwan Semiconductor is a 5A, 200V Schottky barrier surface-mount rectifier in DO-214AB (SMC) package, optimized for high-efficiency switching power supplies with low forward voltage (0.95V at 5A, 25°C), high surge capability (120A IFSM), and junction temperature up to 150°C. It serves as the output rectifier in AC/DC adapters and DC/DC converters where low conduction loss and fast recovery are critical.

For engineers reviewing the SK520C M6G datasheet, SK520C M6G pinout, SK520C M6G application, or SK520C M6G equivalent, key selection criteria include its 200V VRRM rating, 0.95V VF at full rated current, 0.3mA IR at 25°C, thermal resistance RθJA of 53°C/W on standard PCB, and DO-214AB mechanical compatibility with automated SMT placement.

Technical Context

The SK520C M6G implements a single-die Schottky structure with guard ring overvoltage protection, enabling robust operation under transient voltage stress. Its low forward voltage drop and absence of minority-carrier storage minimize switching losses in high-frequency SMPS topologies operating up to several hundred kHz.

Thermal performance is defined by RθJL = 13°C/W and RθJC = 16°C/W, indicating efficient heat transfer from junction to lead or case-critical for sustained 5A DC operation on standard 16mm × 16mm copper pads. Moisture sensitivity level is J-STD-020 Level 1, eliminating bake requirements prior to reflow.

Key Specifications

Pinout & Package

Package: DO-214AB (SMC), surface-mount plastic case with matte tin-plated leads, cathode indicated by 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 SK520C M6G, VS-50WQ03FNTR-M3 offers lower conduction loss but fails at 200V systems, while SB5200-E3/54 matches voltage and current ratings closely but requires tighter thermal management due to higher RθJA.

Availability

SK520C M6G is available at Aetrix Electronics and suitable for switching mode power supplies, LED lighting drivers, and industrial DC/DC converters requiring stable component supply, RoHS/halogen-free compliance, and J-STD-020 Level 1 manufacturability.

Supply support for SK520C 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in power rectifiers, TVS diodes, MOSFETs, and bipolar transistors since 1979.

The SK520C M6G belongs to TSC's SK5xC Schottky rectifier family, engineered specifically for high-efficiency, high-reliability AC/DC and DC/DC power conversion in consumer, industrial, and lighting applications.

FAQ

What is the maximum junction temperature rating for SK520C M6G?

The SK520C M6G has a maximum junction temperature (TJ max) of 150°C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet Version S2311. This rating enables reliable operation in thermally demanding environments such as enclosed LED drivers or industrial power modules, provided thermal design maintains actual TJ below this limit under worst-case load and ambient conditions. The SK520C M6G must not be operated beyond 150°C junction temperature to avoid permanent degradation.

Does SK520C M6G have a specified moisture sensitivity level (MSL)?

Yes, the SK520C M6G is rated MSL Level 1 per J-STD-020, meaning it can be stored indefinitely at ≤30°C/85% RH and placed directly into reflow soldering without baking. This eliminates pre-conditioning steps in high-volume SMT assembly, reducing process time and cost. The MSL Level 1 classification is confirmed in the Mechanical Data section of the Taiwan Semiconductor SK52C–SK520C datasheet (Version S2311), and applies specifically to the DO-214AB (SMC) packaged SK520C M6G.

What is the forward voltage drop of SK520C M6G at rated current?

The SK520C M6G exhibits a maximum forward voltage (VF) of 0.95 V at 5 A forward current and 25°C junction temperature, as specified in the Electrical Specifications table for the SK515C/SK520C group. This value is measured under pulsed conditions (PW = 0.3 ms) and represents the upper bound for conduction loss calculation. At elevated temperatures (e.g., 125°C), VF decreases slightly, but system-level thermal design must still account for worst-case 0.95 V at room temperature for initial loss estimation. The SK520C M6G data sheet confirms this parameter applies to the exact part number.

Is SK520C M6G compatible with lead-free reflow profiles?

Yes, the SK520C M6G features matte tin-plated leads compliant with J-STD-002 for solderability and is qualified for standard lead-free reflow profiles, including JEDEC J-STD-020 peak temperatures up to 260°C. Its DO-214AB (SMC) package uses UL 94V-0 molding compound and meets JESD201 Class 2 whisker resistance requirements. These qualifications are explicitly stated in the Mechanical Data section of the Taiwan Semiconductor SK52C–SK520C datasheet (Version S2311), confirming suitability for modern RoHS-compliant manufacturing using SK520C M6G.

What packaging option is available for SK520C M6G?

The SK520C M6G is supplied in tape-and-reel packaging with 3,000 units per reel, as specified in the Ordering Information section of the Taiwan Semiconductor SK52C–SK520C datasheet (Version S2311). This format is optimized for automated SMT placement equipment and aligns with industry-standard EIA-481 specifications. No other packaging variants (e.g., bulk, ammo pack, or tray) are listed for SK520C M6G in official documentation, and the DO-214AB (SMC) package is the sole mechanical configuration offered for this voltage variant.