Taiwan Semiconductor Corporation RS2K-T

Overview

RS2K-T from Taiwan Semiconductor is a 2 A, 800 V fast recovery surface-mount rectifier in DO-214AA (SMB) package, featuring 500 ns reverse recovery time, 1.03 V forward voltage at 2 A / 25°C, and 5 µA max reverse leakage at 25°C. It serves as a primary AC/DC input stage rectifier in compact switching power supplies.

For engineers reviewing the RS2K-T datasheet, RS2K-T pinout, RS2K-T application, or RS2K-T equivalent, key selection criteria include peak reverse voltage margin, thermal resistance (R_θJL = 20°C/W), surge current rating (IFSM = 50 A), and low VF at elevated junction temperature (0.90 V @ 2 A / 125°C).

Technical Context

This discrete diode employs a glass-passivated silicon junction optimized for high-speed switching in offline SMPS and DC/DC converters. Its 800 V V_RRM supports universal-input (85–265 VAC) designs with safety margin, while the 500 ns trr enables operation up to ~100 kHz without excessive switching loss.

The DO-214AA (SMB) package provides robust thermal performance (R_θJA = 78°C/W on 10 mm × 10 mm Cu pad) and meets J-STD-020 Level 1 moisture sensitivity, enabling standard reflow assembly. Polarity is marked by a cathode band, and terminals are matte tin-plated per J-STD-002.

Key Specifications

Pinout & Package

DO-214AA (SMB) surface-mount package with axial lead configuration: cathode indicated by molded band; leads are matte tin-plated, solderable per J-STD-002; weight ≈ 0.090 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH2R08 and ES2J, RS2K-T delivers optimal balance of 800 V ruggedness, 1.03 V low forward drop, and 500 ns recovery for cost-sensitive 50–100 kHz offline SMPS, with superior thermal coupling via SMB package.

Availability

RS2K-T is available at Aetrix Electronics and suitable for AC/DC adapters, industrial DC/DC converters, and LED driver power stages requiring stable component supply, long-term lifecycle support, and J-STD-020 Level 1 assembly compatibility.

Supply support for RS2K-T 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 electronics markets since 1979.

The RS2x-T series was developed specifically for high-efficiency, surface-mount rectification in compact switching power supplies, emphasizing thermal robustness, low leakage, and automated assembly readiness.

FAQ

What is the maximum junction temperature rating for RS2K-T?

The RS2K-T has a maximum junction temperature (T_J) rating of +150°C, verified per absolute maximum ratings table in the C2102 datasheet. This allows operation in sealed enclosures or high-ambient environments when combined with its 20°C/W junction-to-lead thermal resistance. Derating begins above 75°C ambient, and the device must not exceed 150°C junction temperature under any steady-state or transient condition.

Does RS2K-T have a specified reverse recovery time (t_rr)?

Yes, RS2K-T has a specified reverse recovery time of 500 ns, measured at I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A, per the electrical specifications section of the C2102 datasheet. This value applies to both RS2K-T and RS2M-T variants and is confirmed across temperature ranges from −55°C to +125°C.

Is RS2K-T compliant with RoHS and halogen-free standards?

Yes, RS2K-T is RoHS compliant and halogen-free per IEC 61249-2-21, as explicitly stated in the FEATURES section of the C2102 datasheet. The molding compound meets UL 94V-0 flammability rating, and all materials are qualified to meet environmental compliance requirements for global market deployment.

What is the marking code printed on the RS2K-T device body?

The RS2K-T device is marked with "RS2K" on its body, as confirmed in the ABSOLUTE MAXIMUM RATINGS table of the C2102 datasheet. This marking distinguishes it from other family members (e.g., RS2D, RS2G) and aligns with the ordering code convention where "K" denotes the 800 V rating.

Can RS2K-T be used in place of RS2J-T in an existing design?

RS2K-T can replace RS2J-T only if the circuit requires ≥800 V V_RRM and accommodates its 500 ns t_rr (vs. RS2J-T's 250 ns). Both share DO-214AA package and pinout, but RS2K-T's higher voltage rating increases safety margin while slightly increasing switching loss. Verify layout clearance and thermal design before substitution.