Taiwan Semiconductor Corporation SGLW

Overview

SGLW from Taiwan Semiconductor is a 400 V, 0.8 A standard surface-mount silicon rectifier diode in SOD-123W package, featuring glass-passivated junction, 20 A peak surge rating, and 150 °C max junction temperature - used in DC-DC converters and switching-mode power supplies.

For engineers reviewing the SGLW datasheet, SGLW pinout, SGLW application, or SGLW equivalent, key selection criteria include repetitive peak reverse voltage (400 V), forward voltage at 0.8 A (≤1.10 V @ 25°C), thermal resistance (R_θJA = 84 °C/W), moisture sensitivity level (MSL 1), and RoHS/halogen-free compliance.

Technical Context

The SGLW operates as a single-die, unidirectional standard recovery rectifier with cathode-band polarity marking. Its glass-passivated junction ensures stable reverse leakage (<1 µA @ 25°C, <150 µA @ 125°C) and robust surge tolerance (20 A, 8.3 ms half-sine).

Thermal performance is characterized on a 5 mm × 5 mm copper pad PCB: R_θJL = 30 °C/W and R_θJC = 31 °C/W confirm efficient heat transfer from junction to lead and case - critical for high-density power stage layouts.

Key Specifications

Pinout & Package

Package: SOD-123W - surface-mount plastic case with matte tin-plated leads, UL 94V-0 rated molding compound, and cathode band polarity indicator. Weight: 0.016 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH1L04S and ES1D, the SGLW offers optimal balance of 400 V blocking, 0.8 A rating, and industry-standard thermal performance in SOD-123W - making it ideal for space-constrained 24–48 V industrial power supplies requiring MSL 1 handling and halogen-free compliance.

Availability

SGLW is available at Aetrix Electronics and suitable for DC-DC converters, switching-mode inverters, and industrial sensor power supplies requiring stable component supply, long-term lifecycle support, and full RoHS/halogen-free compliance.

Supply support for SGLW 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 rectifiers, TVS diodes, and MOSFETs for industrial and consumer markets.

The SGLW belongs to TSC's SxLW standard rectifier family, engineered for high-reliability, automated SMT assembly in compact power conversion stages where thermal stability, surge immunity, and regulatory compliance are essential.

FAQ

What is the maximum repetitive peak reverse voltage rating for the SGLW?

The SGLW has a maximum repetitive peak reverse voltage (V_RRM) rating of 400 V. This value is confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version C2103). It defines the highest reverse voltage the SGLW can block repeatedly without entering avalanche breakdown under normal operating conditions. Designers must ensure system-level reverse transients remain below this limit with appropriate safety margin.

Does the SGLW meet RoHS and halogen-free requirements?

Yes, the SGLW is RoHS compliant and halogen-free per IEC 61249-2-21. This is explicitly stated in the FEATURES section of the Taiwan Semiconductor datasheet (Version C2103). The halogen-free status applies to the molding compound and plating materials, and RoHS compliance covers all six restricted substances. These certifications are verified through TSC's material declarations and third-party test reports.

What is the forward voltage drop of the SGLW at 0.8 A and 25°C?

The forward voltage drop (V_F) of the SGLW is guaranteed ≤1.10 V at I_F = 0.8 A and T_J = 25°C, per the Electrical Specifications table. The typical value is 0.94 V under those conditions. This parameter directly impacts conduction loss and thermal design - for example, at 0.8 A, worst-case power dissipation is 0.88 W, requiring attention to PCB copper area and ambient temperature.

What is the moisture sensitivity level (MSL) of the SGLW?

The SGLW has a moisture sensitivity level (MSL) of Level 1 per J-STD-020. This means it can be stored indefinitely at ≤30°C/85% RH without baking prior to reflow soldering. The Level 1 rating results from its glass-passivated die construction and robust SOD-123W packaging, eliminating floor-life constraints and simplifying SMT line logistics for high-volume manufacturing of the SGLW.

Is the SGLW suitable for automotive applications?

The SGLW is rated for junction and storage temperatures from –55°C to +150°C and meets JESD 201 Class 2 whisker resistance, making it technically viable for non-safety-critical automotive body electronics such as BCM auxiliary rails. However, Taiwan Semiconductor does not qualify the SGLW to AEC-Q101, and the datasheet explicitly states these products are "not designed for use in medical, life-saving, or life-sustaining applications" - including ASIL-B/C safety domains.