Taiwan Semiconductor Corporation RS2KA R3G

Overview

RS2KA R3G from Taiwan Semiconductor is a 1.5A, 800V fast recovery surface-mount rectifier in DO-214AC (SMA) package, featuring 500 ns reverse recovery time, 1.3 V max forward voltage at 1.5 A, and 5 µA max reverse leakage at 25°C. It serves as a primary output rectifier in high-frequency switching power supplies.

For engineers reviewing the RS2KA R3G datasheet, RS2KA R3G pinout, RS2KA R3G application, or RS2KA R3G equivalent, key selection criteria include repetitive peak reverse voltage (800 V), thermal resistance (18 °C/W junction-to-lead), moisture sensitivity level (J-STD-020 Level 1), and RoHS/halogen-free compliance for industrial and lighting power conversion designs.

Technical Context

This discrete rectifier uses a glass-passivated silicon junction optimized for fast switching in DC-DC converters and snubber circuits. Its single-die configuration supports unidirectional conduction with cathode-band polarity marking and operates across -55°C to +175°C junction temperature range.

Thermal performance is defined by 18 °C/W junction-to-lead and 55 °C/W junction-to-ambient resistance. Electrical behavior includes 50 A non-repetitive surge capability (8.3 ms half-sine) and 50 pF junction capacitance at 1 MHz/4 V, enabling stable operation in high-frequency inverters and LED drivers.

Key Specifications

Pinout & Package

Package: DO-214AC (SMA), molded plastic case meeting UL 94V-0, matte tin-plated leads solderable per J-STD-002, cathode indicated by band.

Key Features

Applications

Equivalent & Alternatives

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

Compared with RS2KA R3G, STTH1L08U offers faster switching but lower current capacity and different thermal interface, while ES1J-E3/5AT shares the DO-214AC package but sacrifices 200 V reverse voltage margin and increases conduction loss-making RS2KA R3G optimal for 800 V, 1.5 A industrial power stages requiring robustness and thermal simplicity.

Availability

RS2KA R3G is available at Aetrix Electronics and suitable for LED driver power stages, industrial DC-DC converters, and snubber network implementations requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.

Supply support for RS2KA R3G 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 industrial, computing, and consumer markets since 1979.

The RS2x series was designed specifically for high-efficiency, surface-mount power rectification in cost-sensitive yet thermally demanding applications such as LED lighting, AC-DC adapters, and industrial power supplies.

FAQ

What is the maximum junction temperature rating for RS2KA R3G?

The RS2KA R3G has a maximum junction temperature (TJ MAX) of +175°C, allowing reliable operation in sealed or high-ambient-temperature environments such as enclosed LED luminaires and industrial control cabinets. This rating is validated per JEDEC test conditions and supports extended lifetime when operated within thermal limits defined by its 18 °C/W junction-to-lead resistance. The RS2KA R3G must be mounted on adequate copper area to maintain TJ ≤ 175°C under full load.

Does RS2KA R3G meet RoHS and halogen-free requirements?

Yes, RS2KA R3G is RoHS compliant and halogen-free per Taiwan Semiconductor's product specifications and material declarations. The device uses lead-free matte tin plating on terminals and UL 94V-0 compliant molding compound without brominated flame retardants. These attributes are verified through third-party testing and documented in TSC's environmental compliance reports, making RS2KA R3G suitable for export to EU, Japan, and other regulated markets.

What is the reverse recovery time (trr) specification for RS2KA R3G?

The RS2KA R3G has a maximum reverse recovery time (trr) of 500 ns, measured under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A per the official Taiwan Semiconductor datasheet. This value reflects its classification within the RS2JA–RS2MA subgroup and is critical for minimizing switching losses in high-frequency power converters. The RS2KA R3G's trr is confirmed across production lots and is not subject to derating at elevated temperatures.

Is RS2KA R3G compatible with standard DO-214AC (SMA) footprint and reflow profiles?

Yes, RS2KA R3G uses the industry-standard DO-214AC (SMA) package with mechanical dimensions matching JEDEC DO-214 Variation AC. Its moisture sensitivity level is J-STD-020 Level 1, permitting unlimited floor life and compatibility with standard Pb-free reflow profiles (peak 260°C). The RS2KA R3G's matte tin-plated leads meet J-STD-002 solderability requirements, ensuring robust joint formation without special process adjustments.

How does RS2KA R3G differ from RS2JA and RS2MA in voltage rating?

RS2KA R3G is rated for 800 V repetitive peak reverse voltage (VRRM), positioned between RS2JA (600 V) and RS2MA (1000 V) in the RS2x family. All share identical current rating (1.5 A), package (DO-214AC), and thermal specs, but differ only in VRRM and corresponding reverse recovery time: RS2JA has 250 ns trr, RS2KA R3G has 500 ns trr, and RS2MA has 500 ns trr. This progression reflects trade-offs between voltage capability and switching speed within the same die process.