Taiwan Semiconductor Corporation S2KHR5G

Overview

S2KHR5G from Taiwan Semiconductor is a 2 A, 800 V standard surface-mount silicon rectifier diode in DO-214AA (SMB) package, featuring 1.15 V max forward voltage at 2 A, 50 A surge capability, and 150 °C max junction temperature-used in AC/DC front-end rectification for industrial SMPS and LED drivers.

For engineers reviewing the S2KHR5G datasheet, S2KHR5G pinout, S2KHR5G application, or S2KHR5G equivalent, key selection criteria include repetitive peak reverse voltage (800 V), thermal resistance (16 °C/W junction-to-lead), reverse recovery time (1500 ns), moisture sensitivity level (J-STD-020 Level 1), and RoHS/halogen-free compliance.

Technical Context

This standard recovery rectifier uses a glass-passivated single-die PN junction optimized for cost-sensitive, medium-voltage power conversion. It operates with a 150 °C maximum junction temperature and supports 8.3 ms half-sine surge currents up to 50 A without degradation.

Its 1500 ns reverse recovery time and 30 pF junction capacitance at 4 V bias indicate suitability for line-frequency and low-frequency switching applications-not high-frequency PFC or synchronous rectification. The device exhibits 1 µA max reverse leakage at 25 °C and 125 µA at 125 °C under rated VR.

Key Specifications

Pinout & Package

DO-214AA (SMB) surface-mount package with cathode-indicated band; matte tin-plated leads, UL 94V-0 molding compound, JESD201 Class 2 whisker resistance, and 0.090 g typical weight.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH2R08 and MUR280, the S2KHR5G delivers lower conduction loss and simpler thermal management at line-frequency operation, while trading off reverse recovery speed-making it optimal for cost-driven, thermally tolerant 50/60 Hz rectification.

Availability

S2KHR5G is available at Aetrix Electronics and suitable for industrial SMPS, LED drivers, AC/DC adapters, and DC-DC converter input protection requiring stable component supply across production lifecycles.

Supply support for S2KHR5G 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 power, automotive, and industrial markets since 1979.

The S2A–S2V series targets cost-optimized, general-purpose rectification in consumer and industrial power supplies-designed for robustness, manufacturability, and compliance with global environmental standards.

FAQ

What is the maximum junction temperature rating for S2KHR5G?

The S2KHR5G has a maximum junction temperature (TJ MAX) of +150 °C, as specified in its absolute maximum ratings table. This rating enables operation in high-ambient environments such as enclosed LED drivers or industrial power supplies. Derating begins at 25 °C ambient, with average forward current decreasing linearly to zero at 150 °C case temperature-designers must ensure thermal path resistance (RθJA = 53 °C/W) is managed via PCB copper area or heatsinking to maintain S2KHR5G within this limit.

Is S2KHR5G suitable for high-frequency switching applications like PFC circuits?

No, the S2KHR5G is not suitable for high-frequency switching applications such as active PFC stages. Its 1500 ns reverse recovery time (trr) and standard recovery characteristics cause excessive switching loss and EMI above ~20 kHz. The S2KHR5G is engineered for line-frequency (50/60 Hz) and low-frequency (<10 kHz) rectification-applications like SMPS front-ends, adapters, and LED drivers where conduction loss dominates. For PFC, fast or ultrafast alternatives like MUR280 or STTH2R08 are recommended.

Does S2KHR5G have RoHS and halogen-free compliance documentation?

Yes, the S2KHR5G is RoHS compliant per EU Directive 2011/65/EU and halogen-free per IEC 61249-2-21. These certifications are confirmed in Taiwan Semiconductor's official product documentation (Version N2102), and the device carries appropriate marking per regulatory requirements. No exemptions apply, and material declarations are available upon request through Aetrix Electronics' technical support for S2KHR5G.

What is the moisture sensitivity level (MSL) of S2KHR5G and how does it affect assembly?

The S2KHR5G is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life at ≤30 °C/60% RH and requires no baking prior to reflow soldering. This simplifies SMT line logistics, eliminates pre-bake steps, and reduces risk of popcorning or delamination during reflow-critical for high-volume manufacturing of power supplies and lighting products using S2KHR5G.

Can S2KHR5G be used in a full-wave bridge configuration?

Yes, the S2KHR5G can be used in discrete full-wave bridge configurations-four S2KHR5G devices may be assembled into a bridge rectifier for 230 VAC inputs, leveraging its 800 V VRRM and 50 A surge rating. Each device handles one quadrant, with cathode/anode orientation following standard bridge layout. However, dedicated bridge packages (e.g., GBU8K) offer smaller footprint and better thermal coupling; S2KHR5G is preferred when board-level flexibility, repairability, or mixed-voltage designs are required.