Taiwan Semiconductor Corporation S2DH

Overview

S2DH from Taiwan Semiconductor is a 2 A, 200 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 S2DH datasheet, S2DH pinout, S2DH application, or S2DH equivalent, key selection criteria include repetitive peak reverse voltage (200 V), junction temperature range (–55 °C to +150 °C), thermal resistance (R_θJL = 16 °C/W), moisture sensitivity level (MSL 1), and RoHS/halogen-free compliance.

Technical Context

The S2DH is a single-die, standard recovery rectifier with 1500 ns reverse recovery time (trr) under IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A conditions. Its glass-passivated junction ensures stable performance in harsh environments including automotive power systems and DC-DC converters.

Thermal design is supported by R_θJL = 16 °C/W and R_θJA = 53 °C/W, enabling reliable operation up to 150 °C junction temperature. The device exhibits low leakage (IR ≤ 1 µA at 25 °C, ≤125 µA at 125 °C) and junction capacitance of 30 pF at 4 V reverse bias.

Key Specifications

Pinout & Package

Package: DO-214AA (SMB), surface-mount, single-anode/single-cathode configuration. Cathode indicated by band on body. Matte tin-plated leads, J-STD-002 solderable, MSL Level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH2R02 and ES2D, the S2DH provides superior surge robustness (50 A IFSM) and automotive qualification at the expense of slower recovery-making it optimal for cost-constrained, thermally demanding, and safety-critical 12–48 V automotive power stages.

Availability

S2DH is available at Aetrix Electronics and suitable for DC–DC converter design, automotive lighting systems, and freewheeling applications requiring stable component supply, AEC-Q101 compliance, and consistent thermal performance.

Supply support for S2DH 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 automotive, industrial, and consumer markets since 1979.

The S2DH belongs to TSC's AEC-Q101-qualified S2xH series of surface-mount rectifiers, engineered specifically for automotive power conversion, lighting, and snubber circuits where reliability under thermal and mechanical stress is mandatory.

FAQ

What is the maximum junction temperature rating for the S2DH?

The S2DH has a maximum junction temperature (T_J) rating of +150 °C, verified per absolute maximum ratings table. This allows sustained operation in under-hood automotive environments and high-power-density DC–DC converters. Derating curves confirm usable current capacity down to 0 A at 150 °C case temperature. Thermal design must account for R_θJL = 16 °C/W to avoid exceeding this limit in the S2DH application.

Is the S2DH pin-compatible with other devices in the S2xH family?

Yes-the S2DH shares identical DO-214AA (SMB) package dimensions, lead spacing, and polarity marking (cathode band) with all S2xH variants (e.g., S2AH, S2BH, S2GH). Mechanical compatibility is confirmed in the Package Outline Dimensions section. However, electrical parameters-including V_RRM, I_FSM, and trr-vary across the family; S2DH specifically offers 200 V V_RRM and 1500 ns t_rr.

Does the S2DH meet automotive reliability standards?

Yes-the S2DH is explicitly AEC-Q101 qualified, as stated in the FEATURES section. This certification covers stress tests including temperature cycling, high-temperature reverse bias (HTRB), and unbiased highly accelerated stress test (UHAST). The device is intended for automotive applications such as lighting, body control modules, and powertrain subsystems where long-term reliability under thermal and vibration stress is required.

What is the reverse leakage current specification for the S2DH at elevated temperature?

At 125 °C junction temperature and rated reverse voltage (200 V), the S2DH exhibits a maximum reverse leakage current (I_R) of 125 µA, per ELECTRICAL SPECIFICATIONS table. At 25 °C, I_R is ≤1 µA. This temperature-dependent leakage behavior is typical for silicon rectifiers and must be considered in high-impedance bias networks or precision sensing paths near the S2DH application.

Can the S2DH be used in snubber circuits, and what design considerations apply?

Yes-the S2DH is recommended for snubber applications per the APPLICATIONS list. Its 200 V V_RRM, 50 A I_FSM, and 1500 ns t_rr enable effective clamping of inductive switching spikes. Designers should verify that snubber capacitor value and resistor power rating accommodate the S2DH's recovery characteristics and surge capability, especially in repetitive 60 Hz or PWM-driven loads.