Taiwan Semiconductor Corporation S2GH

Overview

S2GH from Taiwan Semiconductor is a 2 A, 400 V surface-mount silicon rectifier diode in DO-214AA (SMB) package, featuring glass-passivated junction, low forward voltage drop (max 1.15 V at 2 A), high surge capability (50 A IFSM), and AEC-Q101 qualification for automotive use.

For engineers reviewing the S2GH datasheet, S2GH pinout, S2GH application, or S2GH equivalent, key selection criteria include repetitive peak reverse voltage (400 V), junction-to-lead thermal resistance (16 °C/W), reverse recovery time (1500 ns), moisture sensitivity level (MSL 1), and compliance with JESD201 Class 2 whisker testing.

Technical Context

The S2GH operates as a single-die standard recovery rectifier optimized for freewheeling and snubber circuits where moderate switching speed and robust surge handling are required. Its 150 °C maximum junction temperature and 16 °C/W R_θJL support thermally constrained PCB layouts in automotive lighting and DC-DC converters.

Electrical behavior is defined by a typical junction capacitance of 30 pF at 4 V reverse bias and reverse leakage of ≤1 µA at 25 °C - enabling stable operation in high-impedance sensing paths and low-power hold-up applications.

Key Specifications

Pinout & Package

Package: DO-214AA (SMB), surface-mount, cathode-indicated by band, matte tin-plated leads, UL 94V-0 molding compound, weight ≈ 0.090 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-2EYH04-M3/45 and MUR240RLG, the S2GH uniquely balances AEC-Q101 qualification, SMB surface-mount compatibility, and 1500 ns trr - making it optimal for automotive SMT power stages where reliability, manufacturability, and moderate switching coexist.

Availability

S2GH is available at Aetrix Electronics and suitable for automotive LED lighting, DC-DC converter freewheeling, and snubber network clamping requiring stable component supply across production lifecycles.

Supply support for S2GH 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, specializing in power devices, rectifiers, TVS diodes, and MOSFETs.

The S2GH belongs to TSC's AEC-Q101-qualified S2xH rectifier family, engineered specifically for automotive power conversion and protection - emphasizing thermal robustness, process consistency, and high-volume SMT manufacturability.

FAQ

What is the maximum junction temperature rating for the S2GH?

The S2GH has a maximum junction temperature (T_J) rating of +150 °C, verified per absolute maximum ratings table in the official Taiwan Semiconductor datasheet (Version A2102). This rating enables reliable operation in under-hood automotive environments and high-ambient industrial power supplies. Thermal design must ensure that power dissipation - calculated using V_F × I_F and R_θJL - does not exceed this limit. The S2GH's 16 °C/W R_θJL supports direct thermal coupling to PCB copper for effective heat extraction.

Is the S2GH suitable for automotive applications?

Yes, the S2GH is explicitly AEC-Q101 qualified per its datasheet (Version A2102), confirming compliance with stress tests including temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge. It is deployed in automotive LED lighting, DC-DC converters, and snubber circuits. Its DO-214AA (SMB) package, MSL Level 1 rating, and halogen-free construction further align with automotive manufacturing and environmental requirements. The S2GH meets ISO 16750-4 for electrical loads in road vehicles.

What is the reverse recovery time (t_rr) of the S2GH and how does it affect circuit performance?

The S2GH has a reverse recovery time (t_rr) of 1500 ns, measured at I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A. This value indicates moderate switching speed - suitable for flyback and forward converters operating below ~100 kHz, and ideal for snubber and freewheeling roles where fast recovery is unnecessary. In contrast to ultrafast rectifiers (e.g., <100 ns), the S2GH trades speed for lower cost and higher surge robustness, making it well-matched to automotive power stages where EMI and ruggedness are prioritized over MHz-range switching.

Does the S2GH have a glass-passivated junction and why does it matter?

Yes, the S2GH features a glass-passivated chip junction, as confirmed in the "Features" section of the Taiwan Semiconductor datasheet (Version A2102). This passivation layer protects the silicon die from moisture, ionic contamination, and mechanical stress - significantly improving long-term reliability in humid or thermally cycled environments such as automotive lighting modules. Unlike epoxy-passivated alternatives, glass passivation maintains stable electrical parameters over time and supports AEC-Q101 qualification by resisting delamination and corrosion under accelerated stress testing.

What packaging and tape-and-reel configuration is used for the S2GH?

The S2GH is supplied in DO-214AA (SMB) surface-mount package and shipped in tape-and-reel format with 3,000 units per reel, as specified in the "Ordering Information" section of the Taiwan Semiconductor datasheet (Version A2102). The matte tin-plated leads comply with J-STD-002 for solderability, and the marking code "S2G" is laser-etched on the cathode-banded surface. This configuration supports high-speed pick-and-place assembly and is compatible with standard reflow profiles for lead-free soldering.