Taiwan Semiconductor Corporation SK515C V7G

Overview

SK515C V7G 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 at 5A, 25°C) and high surge capability (120A IFSM). It features guard ring overvoltage protection, moisture sensitivity level 1, and RoHS/halogen-free compliance.

For engineers reviewing the SK515C V7G datasheet, SK515C V7G pinout, SK515C V7G application, or SK515C V7G equivalent, key selection criteria include its 150V reverse voltage rating, thermal resistance (RθJL = 13°C/W), junction temperature range (–55°C to +150°C), and suitability for high-frequency SMPS output rectification where low conduction loss is critical.

Technical Context

The SK515C V7G implements a single-die Schottky structure with metal-semiconductor junction, enabling fast recovery (no minority carrier storage) and zero reverse recovery charge (Qrr ≈ 0). Its 150V VRRM rating targets mid-voltage DC/DC converters and AC/DC secondary-side rectification where higher blocking than 100V devices is required without switching to slower PN diodes.

Thermal performance is defined for PCB-mounted operation on a 16mm × 16mm copper pad: RθJA = 53°C/W, RθJC = 16°C/W, and RθJL = 13°C/W - confirming lead-to-heatsink path efficiency critical for sustained 5A conduction in compact adapters and lighting drivers.

Key Specifications

Pinout & Package

Package: DO-214AB (SMC), surface-mount, cathode indicated by molded band. Case meets UL 94V-0; matte tin-plated leads comply with J-STD-002 solderability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-50SQ030NTR-M3 and SB5150-E3/54, the SK515C V7G provides optimal balance of 150V blocking, 0.95V VF, and 13°C/W RθJL - making it preferred for thermally constrained 48V-output SMPS where both voltage margin and thermal efficiency are simultaneously critical.

Availability

SK515C V7G is available at Aetrix Electronics and suitable for switching mode power supplies, LED lighting drivers, and USB-C PD adapters requiring stable component supply and consistent parametric performance across production batches.

Supply support for SK515C 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, specializing in power rectifiers, TVS diodes, and MOSFETs for industrial and consumer markets.

The SK5xC series was developed specifically for high-efficiency, surface-mount secondary-side rectification in compact AC/DC and DC/DC converters, emphasizing low VF, robust surge capability, and J-STD-020 Level 1 manufacturability.

FAQ

What is the maximum junction temperature rating for the SK515C V7G?

The SK515C V7G has a maximum junction temperature (TJ MAX) of +150°C, with a full operational range from –55°C to +150°C. This rating allows reliable use in high-ambient environments such as enclosed LED luminaires or industrial power modules. Derating curves in the datasheet define safe current limits above 25°C ambient, and the device's RθJL of 13°C/W supports effective heat transfer to PCB copper. Always verify actual TJ in final layout using thermal simulation or measurement.

Does the SK515C V7G have a specified reverse recovery time (trr)?

No - the SK515C V7G is a Schottky barrier diode and exhibits no minority carrier storage, so reverse recovery time (trr) is effectively zero. Unlike PN junction rectifiers, it does not generate reverse recovery current or associated switching losses. This characteristic makes the SK515C V7G ideal for high-frequency SMPS designs (>100 kHz) where trr-related EMI and efficiency penalties must be avoided. The datasheet confirms zero Qrr behavior implicitly through absence of trr specification and inclusion of dV/dt = 10,000 V/µs rating.

What is the cathode marking convention for the SK515C V7G in DO-214AB package?

The cathode of the SK515C V7G is identified by a molded black band located near one end of the DO-214AB (SMC) plastic body. This band aligns with the cathode terminal, which must be connected to the higher-potential node (e.g., output rail) in forward-biased operation. The marking diagram in the TSC datasheet (Version S2311, Page 6) confirms this orientation, and the band is visible under standard AOI inspection. Incorrect orientation results in open-circuit behavior or reverse conduction failure.

Is the SK515C V7G compliant with JEDEC moisture sensitivity level standards?

Yes - the SK515C V7G is rated at Moisture Sensitivity Level (MSL) 1 per J-STD-020, meaning it has unlimited floor life at ≤30°C/85% RH and requires no baking prior to reflow soldering. This simplifies SMT line integration and eliminates dry-pack storage costs. The qualification is confirmed in the "FEATURES" section of the official TSC datasheet (S2311), and the device uses molding compound and lead finish meeting all MSL-1 process requirements.

How does the forward voltage of SK515C V7G compare to lower-voltage SK5xC variants?

The SK515C V7G has a typical forward voltage of 0.95V at 5A and 25°C, which is higher than lower-voltage variants (e.g., SK55C: 0.75V, SK52C: 0.55V) due to increased barrier height needed for 150V blocking. This trade-off reflects Schottky physics: higher VRRM requires higher work-function metal or modified doping, raising VF. Designers selecting SK515C V7G accept this ~0.2–0.4V penalty to achieve necessary voltage margin in 48V systems, avoiding risk of avalanche failure during line transients.