Taiwan Semiconductor Corporation S2M

Overview

S2M from Taiwan Semiconductor is a standard surface-mount silicon rectifier diode with 1000 V repetitive peak reverse voltage (V_RRM), 2 A average forward current (I_F), and DO-214AA (SMB) package; used in AC/DC front-end rectification for industrial power supplies and LED drivers.

For engineers reviewing the S2M datasheet, S2M pinout, S2M application, or S2M equivalent, key selection criteria include verified V_RRM = 1000 V, I_F = 2 A, low V_F ≤ 1.15 V at 2 A, t_rr = 1500 ns, and moisture sensitivity level 1 compliance per J-STD-020.

Technical Context

The S2M is a single-die, glass-passivated PN junction rectifier optimized for high-surge capability (I_FSM = 50 A, 8.3 ms half-sine) and stable operation up to T_J = 150 °C. Its thermal resistance R_θJL = 16 °C/W enables efficient heat transfer to PCB copper.

Electrical behavior is defined by low forward voltage drop (≤1.15 V @ 2 A, 25 °C), minimal reverse leakage (≤1 µA @ 25 °C, rated V_R), and junction capacitance of 30 pF @ 4 V - suitable for moderate-frequency switching applications below 100 kHz.

Key Specifications

Pinout & Package

Package: DO-214AA (SMB), surface-mount, single-anode/single-cathode configuration; cathode indicated by molded band; matte tin-plated leads compliant with J-STD-002 solderability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MUR2100 and VS-2EY100, the S2M offers the lowest forward voltage (≤1.15 V) among 1000 V/2 A SMB rectifiers and is optimized for cost-driven, low-frequency rectification - not high-speed switching - making it ideal for industrial adapters and lighting where thermal margin and reliability outweigh ultrafast recovery needs.

Availability

S2M is available at Aetrix Electronics and suitable for industrial SMPS, LED drivers, and AC-DC adapters requiring stable component supply, long-lifecycle support, and RoHS-compliant sourcing.

Supply support for S2M 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 industrial, computing, and consumer markets since 1979.

The S2M belongs to TSC's S2x series of standard rectifiers designed specifically for cost-effective, high-reliability AC/DC front-end conversion in power supplies and lighting systems - emphasizing ruggedness, manufacturability, and regulatory compliance.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for the S2M?

The S2M has a V_RRM of 1000 V, confirmed in the Absolute Maximum Ratings table across all versions of the S2x family datasheet (N2102). This rating ensures reliable blocking performance under worst-case AC line conditions, including 264 VAC input with safety margin, and is validated for continuous operation at T_J ≤ 150 °C. The S2M must not be operated above this voltage to prevent avalanche breakdown.

Is the S2M suitable for automated SMT assembly without pre-baking?

Yes, the S2M is rated Moisture Sensitivity Level 1 per J-STD-020, meaning it can be placed directly onto PCBs using standard reflow profiles without baking or dry-packing. This is enabled by its DO-214AA (SMB) package with UL 94V-0 molding compound and matte tin-plated leads meeting J-STD-002 solderability - a key advantage for high-volume manufacturing of the S2M.

What is the forward voltage (V_F) specification for the S2M at rated current?

The S2M has a maximum forward voltage of 1.15 V at I_F = 2 A and T_J = 25 °C, as specified in the Electrical Specifications table. This value is measured under pulsed conditions (PW = 0.3 ms) and represents the upper limit for conduction loss calculation. At elevated junction temperatures, V_F decreases slightly, but system-level thermal design must ensure T_J stays within −55 °C to +150 °C.

Does the S2M have a halogen-free construction?

Yes, the S2M is halogen-free in accordance with IEC 61249-2-21, as explicitly stated in the FEATURES section of the official datasheet. This applies to both the molding compound and internal materials, supporting environmental compliance for export to EU, Japan, and other regulated markets - a verified attribute of the S2M, not inferred from family-level data.

What is the reverse recovery time (t_rr) of the S2M, and how does it affect circuit design?

The S2M has a reverse recovery time of 1500 ns, measured at I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A. This standard recovery characteristic makes the S2M appropriate for 50/60 Hz and low-kHz rectification but unsuitable for high-frequency PFC or resonant topologies where faster recovery (e.g., <200 ns) is required to minimize switching loss and EMI - a key differentiator for the S2M.