Taiwan Semiconductor Corporation SK515CHM6G

Overview

SK515CHM6G from Taiwan Semiconductor is a 5A, 150V Schottky barrier surface-mount rectifier in DO-214AB (SMC) package, qualified to AEC-Q101 for automotive use. It delivers low forward voltage (0.95 V at 5 A, 25°C), high surge capability (120 A), and operates up to 150°C junction temperature - ideal for reverse battery protection and DC/DC converter freewheeling paths.

For engineers reviewing the SK515CHM6G datasheet, SK515CHM6G pinout, SK515CHM6G application, or SK515CHM6G equivalent, key selection criteria include its 150 V repetitive peak reverse voltage, 0.95 V forward drop at rated current, AEC-Q101 qualification, moisture sensitivity level 1 rating, and DO-214AB thermal performance (R_θJL = 13°C/W).

Technical Context

This Schottky rectifier uses a single-die construction with guard ring for overvoltage protection and matte tin-plated leads compliant with J-STD-002 solderability. Its 150 V V_RRM, 5 A continuous forward current, and 120 A non-repetitive surge rating support high-efficiency power conversion in constrained automotive and industrial layouts.

Thermal design is enabled by R_θJL = 13°C/W and R_θJA = 53°C/W (measured on 16 mm × 16 mm Cu pad), while its 0.3 mA reverse leakage at 25°C and 5 mA at 125°C ensures stable blocking under elevated ambient conditions.

Key Specifications

Pinout & Package

Package: DO-214AB (SMC) - surface-mount plastic package with 6.80 mm × 8.15 mm footprint, 2.45 mm height, and cathode band polarity indicator. Weight: 0.210 g. Meets UL 94V-0 flammability and JESD201 Class 2 whisker resistance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-50SQ150 and SB5150, SK515CHM6G uniquely combines AEC-Q101 qualification, MSL1 handling, and guaranteed 0.95 V V_F in DO-214AB - making it the only drop-in solution for automotive reverse protection and lighting where process compliance and zero bake logistics are mandatory.

Availability

SK515CHM6G is available at Aetrix Electronics and suitable for reverse battery protection, automotive LED lighting, and DC/DC converter output stages requiring stable component supply, long-term lifecycle assurance, and automotive-grade traceability.

Supply support for SK515CHM6G 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 automotive, industrial, and consumer markets since 1979.

SK515CHM6G belongs to TSC's AEC-Q101-qualified Schottky rectifier family designed specifically for high-reliability automotive power management - emphasizing low V_F, surge robustness, and seamless SMT integration.

FAQ

What is the maximum junction temperature rating for SK515CHM6G?

The SK515CHM6G has a maximum junction temperature (T_J) of +150°C, validated per JEDEC standards. This rating allows uninterrupted operation in under-hood automotive environments and sealed industrial enclosures. Thermal design must ensure that actual junction temperature - calculated using R_θJL = 13°C/W and measured lead temperature - remains below this limit under worst-case load and ambient conditions. The SK515CHM6G datasheet specifies derating curves confirming full 5 A current capability up to 150°C case temperature.

Is SK515CHM6G pin-compatible with other SK5xCH variants?

Yes - all SK5xCH devices, including SK515CHM6G, share identical DO-214AB (SMC) package dimensions, pinout, and thermal pad layout. Anode and cathode terminals are fixed per JEDEC outline, enabling direct substitution across the 20 V–200 V family without PCB changes. However, electrical parameters such as V_RRM, V_F, and I_R differ significantly between variants, so functional validation is required when swapping SK515CHM6G for SK510CH or SK520CH in circuit design.

Does SK515CHM6G require baking before reflow soldering?

No - SK515CHM6G is rated Moisture Sensitivity Level 1 (MSL1) per J-STD-020, meaning it may be stored indefinitely at ≤30°C/60% RH and placed directly into reflow without preconditioning or baking. This eliminates production delays and moisture-related popcorning risk. The SK515CHM6G's MSL1 status is confirmed in the official Taiwan Semiconductor datasheet Version C2311 and applies to both tape-and-reel and bulk packaging formats.

What is the forward voltage specification for SK515CHM6G at elevated temperature?

The SK515CHM6G forward voltage increases with junction temperature: typical V_F is 0.95 V at 25°C and rises to approximately 1.05 V at 125°C (measured at I_F = 5 A). This positive temperature coefficient improves current sharing in parallel configurations. The SK515CHM6G datasheet provides Fig.10 and Fig.12 showing V_F vs. I_F curves across -55°C to +150°C, confirming stable conduction behavior even near T_J max.

How does the guard ring feature improve reliability in SK515CHM6G?

The guard ring in SK515CHM6G enhances edge termination robustness by distributing electric field stress away from the active junction periphery. This design prevents premature avalanche breakdown during voltage transients - such as load dump pulses in 12 V automotive systems - without reducing the rated 150 V V_RRM. The SK515CHM6G's guard ring is verified in TSC's AEC-Q101 stress testing, contributing to its ability to withstand 120 A surge peaks and maintain stable IR performance over lifetime.