Taiwan Semiconductor Corporation SK53C M6G

Overview

SK53C M6G from Taiwan Semiconductor is a 5A, 30V Schottky barrier surface-mount rectifier in DO-214AB (SMC) package, optimized for high-efficiency switching power supplies with low forward voltage (0.55 V at 5 A, 25°C) and high surge capability (120 A IFSM). It features guard ring overvoltage protection, J-STD-020 Level 1 moisture sensitivity, and RoHS/halogen-free compliance.

For engineers reviewing the SK53C M6G datasheet, SK53C M6G pinout, SK53C M6G application, or SK53C M6G equivalent, key selection criteria include its 30 V repetitive peak reverse voltage, 0.55 V forward drop at rated current, 13 °C/W junction-to-lead thermal resistance, and suitability for compact, thermally constrained SMPS and adapter designs.

Technical Context

The SK53C M6G is a single-die, unidirectional Schottky rectifier designed for high-frequency DC/DC conversion where low conduction loss and fast recovery are critical. Its 30 V VRRM rating targets low-voltage secondary-side rectification in AC/DC adapters and isolated DC/DC converters.

Thermal performance is defined by RθJL = 13 °C/W on a 16 mm × 16 mm Cu pad PCB, enabling reliable 5 A continuous operation up to 150 °C junction temperature. The device exhibits 0.5 mA max reverse leakage at 25°C and 20 mA at 100°C under rated VR.

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 SS53HE3/5BT and SB530-TB, the SK53C M6G offers balanced thermal performance (RθJL = 13 °C/W), industry-standard DO-214AB mechanical compatibility, and guaranteed 0.55 V VF at 5 A - making it optimal for cost-sensitive, thermally demanding 5 A SMPS designs where layout flexibility and proven reliability are prioritized.

Availability

SK53C M6G is available at Aetrix Electronics and suitable for AC/DC adapters, USB-PD power supplies, and industrial DC/DC converters requiring stable component supply, consistent parametric performance, and long-term production continuity.

Supply support for SK53C 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 devices, and MOSFETs since 1979.

The SK52C–SK520C series was developed specifically for high-efficiency, surface-mount secondary-side rectification in compact switching power supplies - emphasizing low VF, robust surge tolerance, and JEDEC-compliant packaging for automated assembly.

FAQ

What is the maximum junction temperature rating for SK53C M6G?

The SK53C M6G has a maximum junction temperature (TJ max) of +150 °C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet revision S2311. This rating enables reliable operation in sealed enclosures or high-ambient environments when mounted on a 16 mm × 16 mm copper pad. Thermal derating begins above 125 °C ambient, and the device must not exceed 150 °C junction temperature under any operating condition. The SK53C M6G's RθJL of 13 °C/W supports this rating with appropriate PCB copper area.

Does SK53C M6G have a specified reverse recovery time (trr)?

No - the SK53C M6G is a Schottky barrier rectifier and does not have a reverse recovery time (trr) specification. Schottky diodes operate via majority-carrier conduction and exhibit negligible stored charge, resulting in effectively zero trr. This characteristic eliminates switching losses associated with minority-carrier recombination and makes the SK53C M6G ideal for high-frequency SMPS designs. The datasheet confirms this behavior through its absence of trr parameter and emphasis on fast switching capability.

What is the cathode marking method used on SK53C M6G?

The cathode of the SK53C M6G is indicated by a distinct band printed on the molded plastic body of the DO-214AB (SMC) package, consistent with JEDEC standard polarity marking. This band aligns with the cathode terminal and is visible on the top surface of the device. The marking diagram in the Taiwan Semiconductor datasheet (S2311, page 6) confirms the band position and orientation. No additional silkscreen or laser marking is used - the single band is the sole polarity indicator for SK53C M6G.

Is SK53C M6G compatible with lead-free reflow soldering processes?

Yes - the SK53C M6G is fully compatible with lead-free reflow soldering per J-STD-020. Its moisture sensitivity level is rated Class 1 (unlimited floor life), meaning it can be stored indefinitely before assembly without baking. The matte tin-plated leads meet J-STD-002 solderability requirements, and the package withstands peak reflow temperatures up to 260 °C. The device's thermal performance data (RθJA = 53 °C/W) is measured using a lead-free reflow profile on a standard test board, confirming robust process compatibility for SK53C M6G.

What is the typical forward voltage of SK53C M6G at 100°C junction temperature?

The datasheet does not specify VF at 100°C for SK53C M6G; only the 25°C value (0.55 V typ at 5 A) is provided. However, Schottky diodes exhibit a negative temperature coefficient for VF, so VF decreases as junction temperature rises - typically by ~1.8 mV/°C. At 100°C, VF is estimated to be approximately 0.42 V, based on extrapolation from adjacent SK52C–SK54C curves in Figure 4 of the S2311 datasheet. This reduction improves conduction efficiency at elevated temperatures, and the SK53C M6G maintains stable operation across its full -55 °C to +150 °C range.