Taiwan Semiconductor Corporation S3KHM6G

Overview

S3KHM6G from Taiwan Semiconductor is a surface-mount silicon rectifier diode with 800 V repetitive peak reverse voltage (V_RRM), 3 A average forward current (I_F), and 100 A non-repetitive surge capability (I_FSM), designed for high-efficiency AC/DC conversion in compact power adapters and LED lighting drivers.

For engineers reviewing the S3KHM6G datasheet, S3KHM6G pinout, S3KHM6G application, or S3KHM6G equivalent, key selection criteria include its DO-214AB (SMC) package thermal performance (R_θJL = 13 °C/W), low 1.15 V forward voltage at 3 A, and 1500 ns reverse recovery time - critical for EMI-sensitive SMPS designs.

Technical Context

This device is a single-die, glass-passivated standard recovery rectifier optimized for cost-sensitive, medium-voltage switching power supplies. Its 800 V V_RRM rating supports universal-input offline converters, while the 150 °C maximum junction temperature enables operation in thermally constrained enclosures.

The DO-214AB (SMC) package provides robust thermal conduction to PCB copper and meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements. Cathode polarity is marked by a visible band on the molded body.

Key Specifications

Pinout & Package

DO-214AB (SMC) surface-mount package: cathode-indicated molded plastic case with matte tin-plated leads; polarity marked by a distinct cathode band; weight ≈ 0.210 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH3L06S and MUR360, the S3KHM6G offers superior voltage margin (800 V) and SMT-compatible DO-214AB packaging but trades off speed (1500 ns t_rr) - making it optimal for cost-driven, medium-frequency (<100 kHz), high-reliability AC/DC front-ends.

Availability

S3KHM6G is available at Aetrix Electronics and suitable for LED lighting drivers, USB-C power adapters, and industrial AC/DC modules requiring stable component supply, consistent parametric performance, and RoHS-compliant sourcing.

Supply support for S3KHM6G 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 S3A–S3M series was developed to deliver high-surge, low-V_F standard recovery rectifiers in industry-standard SMC packages - targeting cost-sensitive, high-volume AC/DC power conversion applications where reliability and manufacturability are paramount.

FAQ

What is the maximum junction temperature rating for the S3KHM6G?

The S3KHM6G has a maximum junction temperature (T_J) of +150 °C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet. This rating allows the S3KHM6G to operate reliably in enclosed LED driver housings and industrial power supplies where ambient temperatures reach 85 °C, provided thermal design maintains junction temperature below this limit. Derating curves confirm usable current capacity down to 1.5 A at 125 °C ambient.

Does the S3KHM6G have a halogen-free and RoHS-compliant construction?

Yes, the S3KHM6G is both halogen-free and RoHS-compliant, as explicitly stated in the "Features" section of the Taiwan Semiconductor datasheet. The molding compound contains no brominated flame retardants, and lead content complies with EU Directive 2011/65/EU. This makes the S3KHM6G suitable for export to EU, Japan, and other regions enforcing strict environmental regulations.

What is the reverse recovery time (t_rr) of the S3KHM6G and how does it affect circuit design?

The S3KHM6G has a reverse recovery time (t_rr) of 1500 ns, measured under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This relatively slow recovery limits use to flyback and forward converters operating below 100 kHz. Designers must account for associated switching losses and potential EMI; it is not recommended for ZVS or high-frequency resonant topologies where <100 ns t_rr is required.

Is the S3KHM6G suitable for use in a bridge rectifier configuration?

Yes, the S3KHM6G can be used in discrete bridge rectifier configurations due to its 800 V V_RRM, 100 A I_FSM, and thermal robustness. Each S3KHM6G handles one quadrant; four units form a full-wave bridge capable of 3 A average output current. Ensure symmetrical PCB layout and equal thermal coupling to maintain balanced current sharing and avoid localized overheating.

What is the marking code and package type indicated on the S3KHM6G physical device?

The S3KHM6G is marked "S3K" on the device body and packaged in DO-214AB (SMC), as confirmed in the "Ordering Information" and "Package Outline Dimensions" sections of the Taiwan Semiconductor datasheet. The cathode is identified by a distinct band, and the package conforms to JEDEC DO-214AB, Variation AB, Issue D - with standardized pad layout dimensions for automated assembly.