Taiwan Semiconductor Corporation RS2D

Overview

RS2D from Taiwan Semiconductor is a 2 A, 200 V fast recovery surface-mount rectifier in DO-214AA (SMB) package, featuring 250 ns reverse recovery time, 1.3 V max forward voltage at 2 A, and 5 µA max reverse leakage at 25°C. It serves as a primary-side output rectifier in compact AC/DC adapters and offline SMPS.

For engineers reviewing the RS2D datasheet, RS2D pinout, RS2D application, or RS2D equivalent, key selection criteria include its 200 V repetitive peak reverse voltage, 50 A surge rating, 175°C maximum junction temperature, thermal resistance of 55°C/W (junction-to-ambient), and compatibility with automated SMT placement per J-STD-020 Level 1 moisture sensitivity.

Technical Context

The RS2D operates as a single-die, unidirectional silicon rectifier with glass-passivated junction for reliability under thermal cycling. Its fast recovery characteristic (trr ≤ 250 ns) enables high-frequency switching up to 100 kHz in flyback and forward converters without excessive switching loss.

Designed for surface-mount assembly, the DO-214AA (SMB) package provides robust thermal performance (R_θJL = 18°C/W) and meets UL 94V-0 flammability requirements. Cathode polarity is marked by a visible band, and terminals are matte tin-plated for J-STD-002 solderability.

Key Specifications

Pinout & Package

DO-214AA (SMB) surface-mount package with cathode-indicated band; dual-leaded, single-diode configuration; body dimensions 4.60 × 3.30 × 2.20 mm (L × W × H); matte tin-plated leads compliant with J-STD-002.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH2R02 and SB220, the RS2D offers balanced trade-offs: sufficient speed for 65–100 kHz operation, proven thermal robustness in SMB footprint, and 200 V rating validated for universal-input AC/DC front ends-making it optimal for cost-sensitive, thermally constrained adapter designs.

Availability

RS2D is available at Aetrix Electronics and suitable for AC/DC adapters, LED drivers, and industrial SMPS requiring stable component supply, consistent parametric performance across production lots, and long-term manufacturing continuity.

Supply support for RS2D 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 Taiwanese semiconductor manufacturer specializing in discrete power devices, including rectifiers, TVS diodes, and MOSFETs, with ISO 9001 and IATF 16949 certification.

The RS2D belongs to TSC's RS2x fast recovery rectifier family, engineered specifically for high-efficiency, surface-mount AC/DC conversion in cost-sensitive consumer and industrial power supplies.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for RS2D?

The RS2D has a maximum repetitive peak reverse voltage (V_RRM) of 200 V, verified per Taiwan Semiconductor's L2304 datasheet revision. This rating ensures reliable blocking capability in 115/230 VAC input circuits after bridge rectification and filtering. The RS2D must not be used in applications where reverse voltage exceeds 200 V under any steady-state or transient condition.

Does RS2D support automated SMT placement?

Yes, RS2D supports automated surface-mount placement per J-STD-020 Level 1 moisture sensitivity classification. Its DO-214AA (SMB) package features matte tin-plated leads compliant with J-STD-002 solderability standards, and no pre-bake is required prior to reflow. The RS2D's standardized footprint and polarity marking simplify vision-based pick-and-place alignment in high-volume manufacturing.

What is the reverse recovery time (t_rr) specification for RS2D?

The RS2D has a reverse recovery time (t_rr) of ≤250 ns, measured at I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A per the official Taiwan Semiconductor datasheet. This value applies across the full operating temperature range and enables efficient operation in 65–100 kHz switching power supplies. The RS2D's t_rr is identical to RS2B and RS2G but slower than RS2A (150 ns).

Is RS2D halogen-free and RoHS compliant?

Yes, RS2D is both halogen-free and RoHS compliant, as confirmed in the "Features" section of Taiwan Semiconductor's L2304 datasheet. The molding compound contains no brominated or chlorinated flame retardants, and lead content is below 1000 ppm. These compliance attributes make RS2D suitable for export to EU, China, and other regulated markets where environmental directives apply to the final product containing RS2D.

What thermal resistance values are specified for RS2D?

RS2D specifies R_θJA = 55°C/W (junction-to-ambient) and R_θJL = 18°C/W (junction-to-lead) under standard JEDEC test conditions. These values are measured on a 1-inch² copper pad with 2 oz. copper weight. For thermal design, the RS2D's R_θJA allows direct PCB copper pour heatsinking without additional heatsinks in applications dissipating ≤0.8 W at 25°C ambient. The RS2D's thermal performance is validated across its full -55°C to +175°C junction temperature range.